feat: 添加文档转PDF转换功能
- 后端添加 PDF 转换服务，支持 Word(docx)、Excel(xlsx)、文本(txt)、Markdown(md) 格式转换为 PDF - 使用 reportlab 库，支持中文字体（simhei.ttf） - 添加 FastAPI 接口：POST /api/v1/pdf/convert 单文件转换，POST /api/v1/pdf/convert/batch 批量转换 - 前端添加 PdfConverter 页面，支持拖拽上传、转换进度显示、批量下载 - 转换流程：所有格式先转为 Markdown，再通过 Markdown 转 PDF，保证输出一致性 - DOCX 解析使用 zipfile 直接读取 XML，避免 python-docx 的兼容性问题的
This commit is contained in:
7
.claude/settings.local.json
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7
.claude/settings.local.json
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{
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"permissions": {
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"allow": [
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"WebSearch"
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]
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}
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}
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backend/=4.0.0
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backend/=4.0.0
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Collecting reportlab
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Using cached reportlab-4.4.10-py3-none-any.whl.metadata (1.7 kB)
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Requirement already satisfied: pillow>=9.0.0 in d:\code\filesreadsystem\backend\venv\lib\site-packages (from reportlab) (12.1.1)
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Requirement already satisfied: charset-normalizer in d:\code\filesreadsystem\backend\venv\lib\site-packages (from reportlab) (3.4.6)
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Using cached reportlab-4.4.10-py3-none-any.whl (2.0 MB)
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Installing collected packages: reportlab
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Successfully installed reportlab-4.4.10
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@@ -15,6 +15,7 @@ from app.api.endpoints import (
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health,
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instruction, # 智能指令
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conversation, # 对话历史
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pdf_converter, # PDF转换
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)
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# 创建主路由
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@@ -33,3 +34,4 @@ api_router.include_router(visualization.router) # 可视化
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api_router.include_router(analysis_charts.router) # 分析图表
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api_router.include_router(instruction.router) # 智能指令
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api_router.include_router(conversation.router) # 对话历史
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api_router.include_router(pdf_converter.router) # PDF转换
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208
backend/app/api/endpoints/pdf_converter.py
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208
backend/app/api/endpoints/pdf_converter.py
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"""
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PDF 转换 API 接口
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提供将 Word、Excel、Txt、Markdown 转换为 PDF 的功能
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"""
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import logging
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import uuid
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from typing import Optional
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from fastapi import APIRouter, UploadFile, File, Form, HTTPException
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from fastapi.responses import StreamingResponse
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from app.services.pdf_converter_service import pdf_converter_service
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from app.services.file_service import file_service
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logger = logging.getLogger(__name__)
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router = APIRouter(prefix="/pdf", tags=["PDF转换"])
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# 临时存储转换后的 PDF（key: download_id, value: (pdf_content, original_filename)）
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_pdf_cache: dict = {}
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# ==================== 请求/响应模型 ====================
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class ConvertResponse:
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"""转换响应"""
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def __init__(self, success: bool, message: str = "", filename: str = ""):
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self.success = success
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self.message = message
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self.filename = filename
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# ==================== 接口 ====================
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@router.post("/convert")
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async def convert_to_pdf(
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file: UploadFile = File(...),
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):
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"""
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将上传的文件转换为 PDF
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支持格式: docx, xlsx, txt, md
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Args:
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file: 上传的文件
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Returns:
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PDF 文件流
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"""
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try:
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# 检查文件格式
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filename = file.filename or "document"
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file_ext = filename.rsplit('.', 1)[-1].lower() if '.' in filename else ''
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if file_ext not in pdf_converter_service.supported_formats:
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raise HTTPException(
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status_code=400,
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detail=f"不支持的格式: {file_ext}，支持的格式: {', '.join(pdf_converter_service.supported_formats)}"
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)
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# 读取文件内容
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content = await file.read()
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if not content:
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raise HTTPException(status_code=400, detail="文件内容为空")
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logger.info(f"开始转换文件: {filename} ({file_ext})")
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# 转换为 PDF
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pdf_content, error = await pdf_converter_service.convert_to_pdf(
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file_content=content,
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source_format=file_ext,
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filename=filename.rsplit('.', 1)[0] if '.' in filename else filename
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)
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if error:
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raise HTTPException(status_code=500, detail=error)
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# 直接返回 PDF 文件流
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return StreamingResponse(
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iter([pdf_content]),
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media_type="application/pdf",
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headers={
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"Content-Disposition": f"attachment; filename*=UTF-8''converted.pdf"
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}
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)
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except HTTPException:
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raise
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except Exception as e:
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logger.error(f"PDF转换失败: {e}")
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raise HTTPException(status_code=500, detail=f"转换失败: {str(e)}")
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@router.get("/download/{download_id}")
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async def download_pdf(download_id: str):
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"""
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通过下载 ID 下载 PDF（支持 IDM 拦截）
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"""
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if download_id not in _pdf_cache:
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raise HTTPException(status_code=404, detail="下载链接已过期或不存在")
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pdf_content, filename = _pdf_cache.pop(download_id) # 下载后删除
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# 使用 RFC 5987 编码支持中文文件名
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from starlette.responses import StreamingResponse
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import urllib.parse
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# URL 编码中文文件名
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encoded_filename = urllib.parse.quote(f"{filename}.pdf")
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return StreamingResponse(
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iter([pdf_content]),
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media_type="application/pdf",
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headers={
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"Content-Disposition": f"attachment; filename*=UTF-8''{encoded_filename}"
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}
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)
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@router.get("/formats")
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async def get_supported_formats():
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"""
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获取支持的源文件格式
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Returns:
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支持的格式列表
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"""
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return {
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"success": True,
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"formats": pdf_converter_service.get_supported_formats()
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}
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@router.post("/convert/batch")
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async def batch_convert_to_pdf(
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files: list[UploadFile] = File(...),
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):
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"""
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批量将多个文件转换为 PDF
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注意: 批量转换会返回多个 PDF 文件打包的 zip
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Args:
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files: 上传的文件列表
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Returns:
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ZIP 压缩包（包含所有PDF）
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"""
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try:
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import io
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import zipfile
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results = []
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errors = []
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for file in files:
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try:
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filename = file.filename or "document"
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file_ext = filename.rsplit('.', 1)[-1].lower() if '.' in filename else ''
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if file_ext not in pdf_converter_service.supported_formats:
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errors.append(f"{filename}: 不支持的格式")
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continue
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content = await file.read()
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pdf_content, error = await pdf_converter_service.convert_to_pdf(
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file_content=content,
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source_format=file_ext,
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filename=filename.rsplit('.', 1)[0] if '.' in filename else filename
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)
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if error:
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errors.append(f"{filename}: {error}")
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else:
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results.append((filename, pdf_content))
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except Exception as e:
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errors.append(f"{file.filename}: {str(e)}")
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if not results:
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raise HTTPException(
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status_code=400,
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detail=f"没有可转换的文件。错误: {'; '.join(errors)}"
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)
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# 创建 ZIP 包
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zip_buffer = io.BytesIO()
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with zipfile.ZipFile(zip_buffer, 'w', zipfile.ZIP_DEFLATED) as zip_file:
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for original_name, pdf_content in results:
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pdf_name = f"{original_name.rsplit('.', 1)[0] if '.' in original_name else original_name}.pdf"
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zip_file.writestr(pdf_name, pdf_content)
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zip_buffer.seek(0)
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return StreamingResponse(
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iter([zip_buffer.getvalue()]),
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media_type="application/zip",
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headers={
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"Content-Disposition": "attachment; filename*=UTF-8''converted_pdfs.zip"
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}
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)
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except HTTPException:
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raise
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except Exception as e:
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logger.error(f"批量PDF转换失败: {e}")
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raise HTTPException(status_code=500, detail=f"批量转换失败: {str(e)}")
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403
backend/app/services/pdf_converter_service.py
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403
backend/app/services/pdf_converter_service.py
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"""
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PDF 转换服务
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支持将 Word(docx)、Excel(xlsx)、Txt、Markdown(md) 格式转换为 PDF
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策略：所有格式先转为 Markdown，再通过 Markdown 转 PDF
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"""
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import io
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import logging
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import platform
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from pathlib import Path
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from typing import List, Tuple
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from reportlab.lib.pagesizes import A4
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from reportlab.lib.styles import getSampleStyleSheet, ParagraphStyle
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from reportlab.lib.enums import TA_LEFT, TA_CENTER, TA_JUSTIFY
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from reportlab.platypus import SimpleDocTemplate, Paragraph, Spacer, Table, TableStyle
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from reportlab.pdfbase import pdfmetrics
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from reportlab.pdfbase.ttfonts import TTFont
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logger = logging.getLogger(__name__)
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class PDFConverterService:
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"""PDF 转换服务"""
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def __init__(self):
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self.supported_formats = ["docx", "xlsx", "txt", "md"]
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self._font_name = None
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self._styles = None
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self._page_width = None
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self._page_height = None
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self._setup_fonts()
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def _setup_fonts(self):
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"""设置字体"""
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try:
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self._page_width, self._page_height = A4
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# 查找中文字体
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font_path = self._find_chinese_font()
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if font_path:
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try:
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font = TTFont('ChineseFont', font_path)
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pdfmetrics.registerFont(font)
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from reportlab.pdfbase.pdfmetrics import registerFontFamily
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registerFontFamily('ChineseFont', normal='ChineseFont')
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self._font_name = 'ChineseFont'
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logger.info(f"成功注册中文字体: {font_path}")
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except Exception as e:
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logger.warning(f"字体注册失败: {e}, 使用Helvetica")
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self._font_name = 'Helvetica'
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else:
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self._font_name = 'Helvetica'
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logger.warning("未找到中文字体，使用 Helvetica（不支持中文）")
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# 创建样式
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styles = getSampleStyleSheet()
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styles.add(ParagraphStyle(
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name='ChineseTitle',
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fontName=self._font_name,
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fontSize=16,
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leading=22,
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alignment=TA_CENTER,
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spaceAfter=12,
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))
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styles.add(ParagraphStyle(
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name='ChineseHeading',
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fontName=self._font_name,
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fontSize=14,
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leading=20,
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spaceBefore=10,
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spaceAfter=8,
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))
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styles.add(ParagraphStyle(
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name='ChineseBody',
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fontName=self._font_name,
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fontSize=10,
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leading=14,
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alignment=TA_JUSTIFY,
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spaceAfter=6,
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))
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styles.add(ParagraphStyle(
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name='ChineseCode',
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fontName='Courier',
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fontSize=9,
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leading=12,
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))
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self._styles = styles
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logger.info("PDF服务初始化完成")
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except Exception as e:
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logger.error(f"PDF服务初始化失败: {e}")
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raise
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def _find_chinese_font(self) -> str:
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"""查找中文字体"""
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system = platform.system()
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if system == "Windows":
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fonts = [
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"C:/Windows/Fonts/simhei.ttf",
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"C:/Windows/Fonts/simsun.ttc",
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"C:/Windows/Fonts/msyh.ttc",
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"C:/Windows/Fonts/simsun.ttf",
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]
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elif system == "Darwin":
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fonts = [
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"/System/Library/Fonts/STHeiti Light.ttc",
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"/System/Library/Fonts/PingFang.ttc",
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"/Library/Fonts/Arial Unicode.ttf",
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]
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else:
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fonts = [
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"/usr/share/fonts/truetype/wqy/wqy-microhei.ttc",
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"/usr/share/fonts/opentype/noto/NotoSansCJK-Regular.ttc",
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]
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for font in fonts:
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if Path(font).exists():
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return font
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return None
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def _sanitize_text(self, text: str) -> str:
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"""清理文本"""
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if not text:
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return ""
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return text.replace('\x00', '')
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async def convert_to_pdf(
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self,
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file_content: bytes,
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source_format: str,
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filename: str = "document"
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) -> Tuple[bytes, str]:
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"""将文档转换为 PDF"""
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try:
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if source_format.lower() not in self.supported_formats:
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return b"", f"不支持的格式: {source_format}"
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# 第一步：转换为 Markdown
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markdown_content, error = await self._convert_to_markdown(file_content, source_format, filename)
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if error:
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return b"", error
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# 第二步：Markdown 转 PDF
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return await self._convert_markdown_to_pdf(markdown_content, filename)
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except Exception as e:
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logger.error(f"PDF转换失败: {e}")
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import traceback
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logger.error(f"详细错误: {traceback.format_exc()}")
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return b"", f"转换失败: {str(e)}"
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async def _convert_to_markdown(
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self,
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file_content: bytes,
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source_format: str,
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filename: str
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) -> Tuple[str, str]:
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"""将各种格式转换为 Markdown"""
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converters = {
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"docx": self._convert_docx_to_markdown,
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"xlsx": self._convert_xlsx_to_markdown,
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"txt": self._convert_txt_to_markdown,
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"md": self._convert_md_to_markdown,
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}
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return await converters[source_format.lower()](file_content, filename)
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async def _convert_txt_to_markdown(self, file_content: bytes, filename: str) -> Tuple[str, str]:
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"""Txt 转 Markdown"""
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try:
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text = self._decode_content(file_content)
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text = self._sanitize_text(text)
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return f"# {filename}\n\n{text}", ""
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except Exception as e:
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logger.error(f"Txt转Markdown失败: {e}")
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return "", f"文本文件处理失败: {str(e)}"
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async def _convert_md_to_markdown(self, file_content: bytes, filename: str) -> Tuple[str, str]:
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"""Markdown 原样返回"""
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try:
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content = self._decode_content(file_content)
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content = self._sanitize_text(content)
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return f"# {filename}\n\n{content}", ""
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except Exception as e:
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logger.error(f"Markdown处理失败: {e}")
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return "", f"Markdown处理失败: {str(e)}"
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async def _convert_docx_to_markdown(self, file_content: bytes, filename: str) -> Tuple[str, str]:
|
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"""Word 转 Markdown - 使用 zipfile 直接解析，更加健壮"""
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try:
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import zipfile
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import re
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lines = [f"# {filename}", ""]
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# 直接使用 zipfile 解析 DOCX，避免 python-docx 的严格验证
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||||
try:
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with zipfile.ZipFile(io.BytesIO(file_content), 'r') as zf:
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||||
# 读取主文档内容
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xml_content = zf.read('word/document.xml').decode('utf-8')
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except zipfile.BadZipFile:
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return "", "文件不是有效的 DOCX 格式"
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except KeyError:
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return "", "DOCX 文件损坏：找不到 document.xml"
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# 简单的 XML 解析 - 提取文本段落
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# 移除 XML 标签，提取纯文本
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xml_content = re.sub(r'<w:br[^>]*>', '\n', xml_content)
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||||
xml_content = re.sub(r'</w:p>', '\n', xml_content)
|
||||
xml_content = re.sub(r'<[^>]+>', '', xml_content)
|
||||
xml_content = re.sub(r'\n\s*\n', '\n\n', xml_content)
|
||||
|
||||
# 解码 HTML 实体
|
||||
xml_content = xml_content.replace('&', '&')
|
||||
xml_content = xml_content.replace('<', '<')
|
||||
xml_content = xml_content.replace('>', '>')
|
||||
xml_content = xml_content.replace('"', '"')
|
||||
xml_content = xml_content.replace(''', "'")
|
||||
|
||||
# 清理空白
|
||||
lines_text = [line.strip() for line in xml_content.split('\n') if line.strip()]
|
||||
|
||||
# 生成 Markdown
|
||||
for text in lines_text[:500]: # 限制最多500行
|
||||
if text:
|
||||
lines.append(text)
|
||||
|
||||
return '\n'.join(lines), ""
|
||||
|
||||
except Exception as e:
|
||||
logger.error(f"Word转Markdown失败: {e}")
|
||||
import traceback
|
||||
logger.error(traceback.format_exc())
|
||||
return "", f"Word文档处理失败: {str(e)}"
|
||||
for table in doc.tables:
|
||||
lines.append("")
|
||||
for row in table.rows:
|
||||
row_data = [cell.text.strip() for cell in row.cells]
|
||||
lines.append("| " + " | ".join(row_data) + " |")
|
||||
# 表头分隔符
|
||||
if table.rows:
|
||||
lines.append("| " + " | ".join(["---"] * len(table.rows[0].cells)) + " |")
|
||||
|
||||
return "\n".join(lines), ""
|
||||
|
||||
except Exception as e:
|
||||
logger.error(f"Word转Markdown失败: {e}")
|
||||
return "", f"Word文档处理失败: {str(e)}"
|
||||
|
||||
async def _convert_xlsx_to_markdown(self, file_content: bytes, filename: str) -> Tuple[str, str]:
|
||||
"""Excel 转 Markdown"""
|
||||
try:
|
||||
import openpyxl
|
||||
|
||||
wb = openpyxl.load_workbook(io.BytesIO(file_content))
|
||||
lines = [f"# {filename} - Excel数据", ""]
|
||||
|
||||
for sheet_name in wb.sheetnames[:10]:
|
||||
ws = wb[sheet_name]
|
||||
lines.append(f"## 工作表: {sheet_name}")
|
||||
lines.append("")
|
||||
|
||||
for row_idx, row in enumerate(ws.iter_rows(max_row=50, values_only=True)):
|
||||
row_data = [str(cell) if cell is not None else "" for cell in row]
|
||||
if not any(row_data):
|
||||
continue
|
||||
lines.append("| " + " | ".join(row_data) + " |")
|
||||
if row_idx == 0:
|
||||
lines.append("| " + " | ".join(["---"] * len(row_data)) + " |")
|
||||
|
||||
lines.append("")
|
||||
|
||||
return "\n".join(lines), ""
|
||||
|
||||
except Exception as e:
|
||||
logger.error(f"Excel转Markdown失败: {e}")
|
||||
return "", f"Excel处理失败: {str(e)}"
|
||||
|
||||
async def _convert_markdown_to_pdf(self, markdown_content: str, filename: str) -> Tuple[bytes, str]:
|
||||
"""Markdown 转 PDF"""
|
||||
try:
|
||||
logger.info(f"Markdown转PDF开始 - filename={filename}, 字体={self._font_name}")
|
||||
logger.info(f"styles['ChineseTitle'].fontName={self._styles['ChineseTitle'].fontName}")
|
||||
|
||||
buffer = io.BytesIO()
|
||||
story = []
|
||||
|
||||
safe_filename = self._sanitize_text(filename)
|
||||
logger.info(f"safe_filename={repr(safe_filename[:50])}")
|
||||
|
||||
story.append(Paragraph(text=safe_filename, style=self._styles['ChineseTitle']))
|
||||
story.append(Spacer(1, 12))
|
||||
|
||||
in_code = False
|
||||
for line in markdown_content.split('\n'):
|
||||
line = line.strip()
|
||||
|
||||
if line.startswith('```'):
|
||||
in_code = not in_code
|
||||
story.append(Spacer(1, 6))
|
||||
continue
|
||||
|
||||
if in_code:
|
||||
story.append(Paragraph(text=self._sanitize_text(line), style=self._styles['ChineseCode']))
|
||||
continue
|
||||
|
||||
if not line:
|
||||
story.append(Spacer(1, 6))
|
||||
continue
|
||||
|
||||
# 标题处理
|
||||
if line.startswith('# '):
|
||||
story.append(Paragraph(text=self._sanitize_text(line[2:]), style=self._styles['ChineseHeading']))
|
||||
elif line.startswith('## '):
|
||||
story.append(Paragraph(text=self._sanitize_text(line[3:]), style=self._styles['ChineseHeading']))
|
||||
elif line.startswith('### '):
|
||||
story.append(Paragraph(text=self._sanitize_text(line[4:]), style=self._styles['ChineseHeading']))
|
||||
elif line.startswith('#### '):
|
||||
story.append(Paragraph(text=self._sanitize_text(line[5:]), style=self._styles['ChineseHeading']))
|
||||
elif line.startswith('- ') or line.startswith('* '):
|
||||
story.append(Paragraph(text="• " + self._sanitize_text(line[2:]), style=self._styles['ChineseBody']))
|
||||
# 表格处理
|
||||
elif line.startswith('|'):
|
||||
# 跳过 markdown 表格分隔符
|
||||
if set(line.replace('|', '').replace('-', '').replace(':', '').replace(' ', '')) == set():
|
||||
continue
|
||||
# 解析并创建表格
|
||||
table_lines = []
|
||||
for _ in range(50): # 最多50行
|
||||
if line.startswith('|'):
|
||||
row = [cell.strip() for cell in line.split('|')[1:-1]]
|
||||
if not any(row) or set(''.join(row).replace('-', '').replace(':', '').replace(' ', '')) == set():
|
||||
break
|
||||
table_lines.append(row)
|
||||
try:
|
||||
line = next(markdown_content.split('\n').__iter__()).strip()
|
||||
except StopIteration:
|
||||
break
|
||||
else:
|
||||
break
|
||||
|
||||
if table_lines:
|
||||
# 创建表格
|
||||
t = Table(table_lines, colWidths=[100] * len(table_lines[0]))
|
||||
t.setStyle(TableStyle([
|
||||
('FONTNAME', (0, 0), (-1, -1), self._font_name),
|
||||
('FONTSIZE', (0, 0), (-1, -1), 9),
|
||||
('GRID', (0, 0), (-1, -1), 0.5, '#999999'),
|
||||
('BACKGROUND', (0, 0), (-1, 0), '#4472C4'),
|
||||
('TEXTCOLOR', (0, 0), (-1, 0), '#FFFFFF'),
|
||||
]))
|
||||
story.append(t)
|
||||
story.append(Spacer(1, 6))
|
||||
else:
|
||||
story.append(Paragraph(text=self._sanitize_text(line), style=self._styles['ChineseBody']))
|
||||
|
||||
logger.info(f"准备构建PDF，story长度={len(story)}")
|
||||
|
||||
pdf_doc = SimpleDocTemplate(
|
||||
buffer,
|
||||
pagesize=(self._page_width, self._page_height),
|
||||
rightMargin=72,
|
||||
leftMargin=72,
|
||||
topMargin=72,
|
||||
bottomMargin=72
|
||||
)
|
||||
logger.info("调用pdf_doc.build()")
|
||||
pdf_doc.build(story)
|
||||
logger.info("pdf_doc.build()完成")
|
||||
|
||||
result = buffer.getvalue()
|
||||
buffer.close()
|
||||
return result, ""
|
||||
|
||||
except Exception as e:
|
||||
logger.error(f"Markdown转PDF失败: {e}")
|
||||
import traceback
|
||||
logger.error(f"详细错误: {traceback.format_exc()}")
|
||||
return b"", f"Markdown转PDF失败: {str(e)}"
|
||||
|
||||
def _decode_content(self, file_content: bytes) -> str:
|
||||
"""解码文件内容"""
|
||||
encodings = ['utf-8', 'gbk', 'gb2312', 'gb18030', 'latin-1']
|
||||
for enc in encodings:
|
||||
try:
|
||||
return file_content.decode(enc)
|
||||
except (UnicodeDecodeError, LookupError):
|
||||
continue
|
||||
return file_content.decode('utf-8', errors='replace')
|
||||
|
||||
def get_supported_formats(self) -> List[str]:
|
||||
"""获取支持的格式"""
|
||||
return self.supported_formats
|
||||
|
||||
|
||||
# 全局单例
|
||||
pdf_converter_service = PDFConverterService()
|
||||
@@ -42,6 +42,9 @@ chardet==5.2.0
|
||||
Pillow>=10.0.0
|
||||
pytesseract>=0.3.10
|
||||
|
||||
# ==================== PDF 生成 ====================
|
||||
reportlab>=4.0.0
|
||||
|
||||
# ==================== AI / LLM ====================
|
||||
httpx==0.25.2
|
||||
|
||||
|
||||
@@ -8,7 +8,8 @@ import {
|
||||
Menu,
|
||||
ChevronRight,
|
||||
Sparkles,
|
||||
Clock
|
||||
Clock,
|
||||
FileDown
|
||||
} from 'lucide-react';
|
||||
import { Button } from '@/components/ui/button';
|
||||
import { cn } from '@/lib/utils';
|
||||
@@ -19,6 +20,7 @@ const navItems = [
|
||||
{ name: '文档中心', path: '/documents', icon: FileText },
|
||||
{ name: '智能填表', path: '/form-fill', icon: TableProperties },
|
||||
{ name: '智能助手', path: '/assistant', icon: MessageSquareCode },
|
||||
{ name: '文档转PDF', path: '/pdf-converter', icon: FileDown },
|
||||
{ name: '任务历史', path: '/task-history', icon: Clock },
|
||||
];
|
||||
|
||||
|
||||
@@ -1153,6 +1153,120 @@ export const backendApi = {
|
||||
}
|
||||
},
|
||||
|
||||
// ==================== PDF 转换 API ====================
|
||||
|
||||
/**
|
||||
* 将文件转换为 PDF
|
||||
*/
|
||||
/**
|
||||
* PDF转换并直接下载（使用XHR，支持IDM拦截）
|
||||
*/
|
||||
async convertAndDownloadPdf(file: File): Promise<void> {
|
||||
return new Promise((resolve, reject) => {
|
||||
const xhr = new XMLHttpRequest();
|
||||
xhr.open('POST', `${BACKEND_BASE_URL}/pdf/convert`);
|
||||
|
||||
xhr.onload = function() {
|
||||
if (xhr.status >= 200 && xhr.status < 300) {
|
||||
// 创建 blob 并触发下载
|
||||
const blob = xhr.response;
|
||||
const url = URL.createObjectURL(blob);
|
||||
const a = document.createElement('a');
|
||||
a.href = url;
|
||||
a.download = `${file.name.replace(/\.[^.]+$/, '')}.pdf`;
|
||||
document.body.appendChild(a);
|
||||
a.click();
|
||||
document.body.removeChild(a);
|
||||
URL.revokeObjectURL(url);
|
||||
resolve();
|
||||
} else {
|
||||
reject(new Error(`转换失败: ${xhr.status}`));
|
||||
}
|
||||
};
|
||||
|
||||
xhr.onerror = function() {
|
||||
reject(new Error('网络错误'));
|
||||
};
|
||||
|
||||
const formData = new FormData();
|
||||
formData.append('file', file);
|
||||
xhr.responseType = 'blob';
|
||||
xhr.send(formData);
|
||||
});
|
||||
},
|
||||
|
||||
/**
|
||||
* PDF转换（返回Blob）
|
||||
*/
|
||||
async convertToPdf(file: File): Promise<Blob> {
|
||||
return new Promise((resolve, reject) => {
|
||||
const xhr = new XMLHttpRequest();
|
||||
xhr.open('POST', `${BACKEND_BASE_URL}/pdf/convert`);
|
||||
|
||||
xhr.onload = function() {
|
||||
if (xhr.status >= 200 && xhr.status < 300) {
|
||||
resolve(xhr.response);
|
||||
} else {
|
||||
reject(new Error(`转换失败: ${xhr.status}`));
|
||||
}
|
||||
};
|
||||
|
||||
xhr.onerror = function() {
|
||||
reject(new Error('网络错误'));
|
||||
};
|
||||
|
||||
const formData = new FormData();
|
||||
formData.append('file', file);
|
||||
xhr.responseType = 'blob';
|
||||
xhr.send(formData);
|
||||
});
|
||||
},
|
||||
|
||||
/**
|
||||
* 批量将文件转换为 PDF
|
||||
*/
|
||||
async batchConvertToPdf(files: File[]): Promise<Blob> {
|
||||
const formData = new FormData();
|
||||
files.forEach(file => formData.append('files', file));
|
||||
|
||||
const url = `${BACKEND_BASE_URL}/pdf/convert/batch`;
|
||||
|
||||
try {
|
||||
const response = await fetch(url, {
|
||||
method: 'POST',
|
||||
body: formData,
|
||||
});
|
||||
|
||||
if (!response.ok) {
|
||||
const error = await response.json();
|
||||
throw new Error(error.detail || '批量PDF转换失败');
|
||||
}
|
||||
|
||||
return await response.blob();
|
||||
} catch (error) {
|
||||
console.error('批量PDF转换失败:', error);
|
||||
throw error;
|
||||
}
|
||||
},
|
||||
|
||||
/**
|
||||
* 获取支持的 PDF 转换格式
|
||||
*/
|
||||
async getPdfSupportedFormats(): Promise<{
|
||||
success: boolean;
|
||||
formats: string[];
|
||||
}> {
|
||||
const url = `${BACKEND_BASE_URL}/pdf/formats`;
|
||||
|
||||
try {
|
||||
const response = await fetch(url);
|
||||
if (!response.ok) throw new Error('获取支持的格式失败');
|
||||
return await response.json();
|
||||
} catch (error) {
|
||||
console.error('获取支持的格式失败:', error);
|
||||
return { success: false, formats: ['docx', 'xlsx', 'txt', 'md'] };
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
// ==================== AI 分析 API ====================
|
||||
@@ -1805,5 +1919,6 @@ export const aiApi = {
|
||||
console.error('获取会话列表失败:', error);
|
||||
return { success: false, conversations: [] };
|
||||
}
|
||||
}
|
||||
},
|
||||
|
||||
};
|
||||
|
||||
446
frontend/src/pages/PdfConverter.tsx
Normal file
446
frontend/src/pages/PdfConverter.tsx
Normal file
@@ -0,0 +1,446 @@
|
||||
/**
|
||||
* PDF 转换页面
|
||||
* 支持将 Word、Excel、Txt、Markdown 格式转换为 PDF
|
||||
*/
|
||||
import React, { useState, useCallback } from 'react';
|
||||
import { useDropzone } from 'react-dropzone';
|
||||
import {
|
||||
FileText,
|
||||
Upload,
|
||||
Download,
|
||||
FileSpreadsheet,
|
||||
File as FileIcon,
|
||||
Loader2,
|
||||
CheckCircle,
|
||||
AlertCircle,
|
||||
Trash2,
|
||||
FileDown,
|
||||
X,
|
||||
Copy
|
||||
} from 'lucide-react';
|
||||
import { Button } from '@/components/ui/button';
|
||||
import { Card, CardContent, CardHeader, CardTitle, CardDescription } from '@/components/ui/card';
|
||||
import { Badge } from '@/components/ui/badge';
|
||||
import { Label } from '@/components/ui/label';
|
||||
import { toast } from 'sonner';
|
||||
import { cn } from '@/lib/utils';
|
||||
import { backendApi } from '@/db/backend-api';
|
||||
|
||||
type FileState = {
|
||||
file: File;
|
||||
status: 'pending' | 'converting' | 'success' | 'failed';
|
||||
progress: number;
|
||||
pdfBlob?: Blob;
|
||||
error?: string;
|
||||
};
|
||||
|
||||
const SUPPORTED_FORMATS = [
|
||||
{ ext: 'docx', name: 'Word 文档', icon: FileText, color: 'blue' },
|
||||
{ ext: 'xlsx', name: 'Excel 表格', icon: FileSpreadsheet, color: 'emerald' },
|
||||
{ ext: 'txt', name: '文本文件', icon: FileIcon, color: 'gray' },
|
||||
{ ext: 'md', name: 'Markdown', icon: FileText, color: 'purple' },
|
||||
];
|
||||
|
||||
const PdfConverter: React.FC = () => {
|
||||
const [files, setFiles] = useState<FileState[]>([]);
|
||||
const [converting, setConverting] = useState(false);
|
||||
const [convertedCount, setConvertedCount] = useState(0);
|
||||
|
||||
const onDrop = useCallback((acceptedFiles: File[]) => {
|
||||
const newFiles: FileState[] = acceptedFiles.map(file => ({
|
||||
file,
|
||||
status: 'pending',
|
||||
progress: 0,
|
||||
}));
|
||||
setFiles(prev => [...prev, ...newFiles]);
|
||||
}, []);
|
||||
|
||||
const { getRootProps, getInputProps, isDragActive } = useDropzone({
|
||||
onDrop,
|
||||
accept: {
|
||||
'application/vnd.openxmlformats-officedocument.wordprocessingml.document': ['.docx'],
|
||||
'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet': ['.xlsx'],
|
||||
'application/vnd.ms-excel': ['.xls'],
|
||||
'text/markdown': ['.md'],
|
||||
'text/plain': ['.txt'],
|
||||
},
|
||||
multiple: true,
|
||||
});
|
||||
|
||||
const handleConvert = async () => {
|
||||
if (files.length === 0) {
|
||||
toast.error('请先上传文件');
|
||||
return;
|
||||
}
|
||||
|
||||
setConverting(true);
|
||||
setConvertedCount(0);
|
||||
|
||||
const pendingFiles = files.filter(f => f.status === 'pending' || f.status === 'failed');
|
||||
let successCount = 0;
|
||||
|
||||
for (let i = 0; i < pendingFiles.length; i++) {
|
||||
const fileState = pendingFiles[i];
|
||||
const fileIndex = files.findIndex(f => f.file === fileState.file);
|
||||
|
||||
// 更新状态为转换中
|
||||
setFiles(prev => prev.map((f, idx) =>
|
||||
idx === fileIndex ? { ...f, status: 'converting', progress: 10 } : f
|
||||
));
|
||||
|
||||
try {
|
||||
// 获取 PDF blob
|
||||
const pdfBlob = await backendApi.convertToPdf(fileState.file);
|
||||
|
||||
// 触发下载
|
||||
const url = URL.createObjectURL(pdfBlob);
|
||||
const a = document.createElement('a');
|
||||
a.href = url;
|
||||
a.download = `${fileState.file.name.replace(/\.[^.]+$/, '')}.pdf`;
|
||||
document.body.appendChild(a);
|
||||
a.click();
|
||||
document.body.removeChild(a);
|
||||
URL.revokeObjectURL(url);
|
||||
|
||||
// 保存 blob 以便批量下载
|
||||
setFiles(prev => prev.map((f, idx) =>
|
||||
idx === fileIndex ? { ...f, status: 'success', progress: 100, pdfBlob } : f
|
||||
));
|
||||
successCount++;
|
||||
setConvertedCount(successCount);
|
||||
toast.success(`${fileState.file.name} 下载已开始`);
|
||||
} catch (error: any) {
|
||||
setFiles(prev => prev.map((f, idx) =>
|
||||
idx === fileIndex ? { ...f, status: 'failed', error: error.message || '转换失败' } : f
|
||||
));
|
||||
}
|
||||
}
|
||||
|
||||
setConverting(false);
|
||||
toast.success(`转换完成：${successCount}/${pendingFiles.length} 个文件`);
|
||||
};
|
||||
|
||||
const handleDownload = (fileState: FileState) => {
|
||||
if (!fileState.pdfBlob) return;
|
||||
|
||||
const url = URL.createObjectURL(fileState.pdfBlob);
|
||||
const link = document.createElement('a');
|
||||
link.href = url;
|
||||
link.download = `${fileState.file.name.replace(/\.[^.]+$/, '')}.pdf`;
|
||||
document.body.appendChild(link);
|
||||
link.click();
|
||||
document.body.removeChild(link);
|
||||
URL.revokeObjectURL(url);
|
||||
};
|
||||
|
||||
const handleDownloadAll = async () => {
|
||||
const successFiles = files.filter(f => f.status === 'success' && f.pdfBlob);
|
||||
|
||||
if (successFiles.length === 0) {
|
||||
toast.error('没有可下载的文件');
|
||||
return;
|
||||
}
|
||||
|
||||
if (successFiles.length === 1) {
|
||||
handleDownload(successFiles[0]);
|
||||
return;
|
||||
}
|
||||
|
||||
// 多个文件，下载 ZIP
|
||||
try {
|
||||
const zipBlob = await backendApi.batchConvertToPdf(
|
||||
successFiles.map(f => f.file)
|
||||
);
|
||||
const url = URL.createObjectURL(zipBlob);
|
||||
const link = document.createElement('a');
|
||||
link.href = url;
|
||||
link.download = 'converted_pdfs.zip';
|
||||
document.body.appendChild(link);
|
||||
link.click();
|
||||
document.body.removeChild(link);
|
||||
URL.revokeObjectURL(url);
|
||||
toast.success('ZIP 下载开始');
|
||||
} catch (error: any) {
|
||||
toast.error(error.message || '下载失败');
|
||||
}
|
||||
};
|
||||
|
||||
const handleRemove = (index: number) => {
|
||||
setFiles(prev => prev.filter((_, i) => i !== index));
|
||||
};
|
||||
|
||||
const handleClear = () => {
|
||||
setFiles([]);
|
||||
setConvertedCount(0);
|
||||
};
|
||||
|
||||
const getFileIcon = (filename: string) => {
|
||||
const ext = filename.split('.').pop()?.toLowerCase();
|
||||
const format = SUPPORTED_FORMATS.find(f => f.ext === ext);
|
||||
if (!format) return FileIcon;
|
||||
return format.icon;
|
||||
};
|
||||
|
||||
const getFileColor = (filename: string) => {
|
||||
const ext = filename.split('.').pop()?.toLowerCase();
|
||||
const format = SUPPORTED_FORMATS.find(f => f.ext === ext);
|
||||
return format?.color || 'gray';
|
||||
};
|
||||
|
||||
const colorClasses: Record<string, string> = {
|
||||
blue: 'bg-blue-500/10 text-blue-500',
|
||||
emerald: 'bg-emerald-500/10 text-emerald-500',
|
||||
purple: 'bg-purple-500/10 text-purple-500',
|
||||
gray: 'bg-gray-500/10 text-gray-500',
|
||||
};
|
||||
|
||||
return (
|
||||
<div className="space-y-8 pb-10">
|
||||
<section className="flex flex-col md:flex-row md:items-center justify-between gap-4">
|
||||
<div className="space-y-1">
|
||||
<h1 className="text-3xl font-extrabold tracking-tight">文档转 PDF</h1>
|
||||
<p className="text-muted-foreground">将 Word、Excel、文本、Markdown 文件转换为 PDF 格式</p>
|
||||
</div>
|
||||
{files.length > 0 && (
|
||||
<div className="flex gap-2">
|
||||
<Button variant="outline" onClick={handleClear}>
|
||||
<Trash2 size={18} className="mr-2" />
|
||||
清空
|
||||
</Button>
|
||||
<Button onClick={handleDownloadAll} disabled={files.filter(f => f.status === 'success').length === 0}>
|
||||
<Download size={18} className="mr-2" />
|
||||
打包下载 ({files.filter(f => f.status === 'success').length})
|
||||
</Button>
|
||||
</div>
|
||||
)}
|
||||
</section>
|
||||
|
||||
<div className="grid grid-cols-1 lg:grid-cols-3 gap-6">
|
||||
{/* 左侧：上传区域 */}
|
||||
<div className="lg:col-span-1 space-y-6">
|
||||
{/* 上传卡片 */}
|
||||
<Card className="border-none shadow-md">
|
||||
<CardHeader className="pb-4">
|
||||
<CardTitle className="flex items-center gap-2">
|
||||
<Upload className="text-primary" size={20} />
|
||||
上传文件
|
||||
</CardTitle>
|
||||
<CardDescription>拖拽或点击上传要转换的文件</CardDescription>
|
||||
</CardHeader>
|
||||
<CardContent className="space-y-4">
|
||||
<div
|
||||
{...getRootProps()}
|
||||
className={cn(
|
||||
"border-2 border-dashed rounded-2xl p-8 transition-all duration-300 flex flex-col items-center justify-center text-center cursor-pointer group",
|
||||
isDragActive ? "border-primary bg-primary/5" : "border-muted-foreground/20 hover:border-primary/50 hover:bg-primary/5",
|
||||
converting && "opacity-50 pointer-events-none"
|
||||
)}
|
||||
>
|
||||
<input {...getInputProps()} />
|
||||
<div className="w-14 h-14 rounded-xl bg-primary/10 text-primary flex items-center justify-center mb-4 group-hover:scale-110 transition-transform">
|
||||
{converting ? <Loader2 className="animate-spin" size={28} /> : <Upload size={28} />}
|
||||
</div>
|
||||
<p className="font-semibold text-sm">
|
||||
{isDragActive ? '释放以开始上传' : '点击或拖拽文件到这里'}
|
||||
</p>
|
||||
<div className="mt-4 flex flex-wrap justify-center gap-2">
|
||||
{SUPPORTED_FORMATS.map(format => (
|
||||
<Badge key={format.ext} variant="outline" className={cn("text-xs", colorClasses[format.color])}>
|
||||
{format.name}
|
||||
</Badge>
|
||||
))}
|
||||
</div>
|
||||
</div>
|
||||
|
||||
{/* 转换按钮 */}
|
||||
{files.length > 0 && (
|
||||
<Button
|
||||
onClick={handleConvert}
|
||||
disabled={converting || files.filter(f => f.status === 'pending' || f.status === 'failed').length === 0}
|
||||
className="w-full bg-gradient-to-r from-primary to-purple-600 hover:from-primary/90 hover:to-purple-600/90"
|
||||
>
|
||||
{converting ? (
|
||||
<>
|
||||
<Loader2 className="mr-2 animate-spin" size={16} />
|
||||
转换中... ({convertedCount}/{files.filter(f => f.status === 'pending' || f.status === 'failed').length})
|
||||
</>
|
||||
) : (
|
||||
<>
|
||||
<FileDown className="mr-2" size={16} />
|
||||
开始转换 ({files.filter(f => f.status === 'pending' || f.status === 'failed').length})
|
||||
</>
|
||||
)}
|
||||
</Button>
|
||||
)}
|
||||
</CardContent>
|
||||
</Card>
|
||||
|
||||
{/* 格式说明 */}
|
||||
<Card className="border-none shadow-md">
|
||||
<CardHeader className="pb-4">
|
||||
<CardTitle className="flex items-center gap-2">
|
||||
<FileText className="text-primary" size={20} />
|
||||
支持的格式
|
||||
</CardTitle>
|
||||
</CardHeader>
|
||||
<CardContent>
|
||||
<div className="space-y-3">
|
||||
{SUPPORTED_FORMATS.map(format => {
|
||||
const Icon = format.icon;
|
||||
return (
|
||||
<div key={format.ext} className="flex items-center gap-3 p-2 rounded-lg hover:bg-muted/30 transition-colors">
|
||||
<div className={cn("w-8 h-8 rounded flex items-center justify-center", colorClasses[format.color])}>
|
||||
<Icon size={16} />
|
||||
</div>
|
||||
<div className="flex-1">
|
||||
<p className="text-sm font-medium">.{format.ext.toUpperCase()}</p>
|
||||
<p className="text-xs text-muted-foreground">{format.name}</p>
|
||||
</div>
|
||||
</div>
|
||||
);
|
||||
})}
|
||||
</div>
|
||||
</CardContent>
|
||||
</Card>
|
||||
</div>
|
||||
|
||||
{/* 右侧：文件列表 */}
|
||||
<div className="lg:col-span-2 space-y-6">
|
||||
<Card className="border-none shadow-md">
|
||||
<CardHeader>
|
||||
<div className="flex items-center justify-between">
|
||||
<div className="space-y-1">
|
||||
<CardTitle className="flex items-center gap-2">
|
||||
<FileIcon className="text-primary" size={20} />
|
||||
文件列表
|
||||
</CardTitle>
|
||||
<CardDescription>
|
||||
共 {files.length} 个文件，已转换 {files.filter(f => f.status === 'success').length} 个
|
||||
</CardDescription>
|
||||
</div>
|
||||
</div>
|
||||
</CardHeader>
|
||||
<CardContent>
|
||||
{files.length === 0 ? (
|
||||
<div className="text-center py-12 text-muted-foreground">
|
||||
<FileIcon size={48} className="mx-auto mb-4 opacity-30" />
|
||||
<p>暂无文件，上传文件开始转换</p>
|
||||
</div>
|
||||
) : (
|
||||
<div className="space-y-3">
|
||||
{files.map((fileState, index) => {
|
||||
const Icon = getFileIcon(fileState.file.name);
|
||||
const color = getFileColor(fileState.file.name);
|
||||
|
||||
return (
|
||||
<div
|
||||
key={index}
|
||||
className="flex items-center gap-4 p-4 rounded-xl border bg-card hover:bg-muted/30 transition-colors"
|
||||
>
|
||||
<div className={cn("w-10 h-10 rounded-lg flex items-center justify-center shrink-0", colorClasses[color])}>
|
||||
<Icon size={20} />
|
||||
</div>
|
||||
<div className="flex-1 min-w-0">
|
||||
<p className="font-semibold truncate">{fileState.file.name}</p>
|
||||
<div className="flex items-center gap-2">
|
||||
<span className="text-xs text-muted-foreground">
|
||||
{(fileState.file.size / 1024).toFixed(1)} KB
|
||||
</span>
|
||||
{fileState.status === 'pending' && (
|
||||
<Badge variant="secondary" className="text-xs">待转换</Badge>
|
||||
)}
|
||||
{fileState.status === 'converting' && (
|
||||
<Badge variant="default" className="text-xs bg-blue-500">转换中</Badge>
|
||||
)}
|
||||
{fileState.status === 'success' && (
|
||||
<Badge variant="default" className="text-xs bg-emerald-500">已转换</Badge>
|
||||
)}
|
||||
{fileState.status === 'failed' && (
|
||||
<Badge variant="destructive" className="text-xs">失败</Badge>
|
||||
)}
|
||||
</div>
|
||||
{fileState.status === 'converting' && (
|
||||
<div className="mt-1 h-1 bg-muted rounded-full overflow-hidden">
|
||||
<div
|
||||
className="h-full bg-primary transition-all duration-300"
|
||||
style={{ width: `${fileState.progress}%` }}
|
||||
/>
|
||||
</div>
|
||||
)}
|
||||
{fileState.error && (
|
||||
<p className="text-xs text-destructive mt-1">{fileState.error}</p>
|
||||
)}
|
||||
</div>
|
||||
<div className="flex items-center gap-2 shrink-0">
|
||||
{fileState.status === 'success' && (
|
||||
<>
|
||||
<Button variant="ghost" size="icon" onClick={() => handleDownload(fileState)}>
|
||||
<Download size={18} className="text-emerald-500" />
|
||||
</Button>
|
||||
<Button
|
||||
variant="ghost"
|
||||
size="icon"
|
||||
onClick={() => {
|
||||
// 复制下载链接到剪贴板
|
||||
if (fileState.pdfBlob) {
|
||||
const url = URL.createObjectURL(fileState.pdfBlob);
|
||||
navigator.clipboard.writeText(url);
|
||||
toast.success('链接已复制');
|
||||
}
|
||||
}}
|
||||
>
|
||||
<Copy size={18} />
|
||||
</Button>
|
||||
</>
|
||||
)}
|
||||
{(fileState.status === 'pending' || fileState.status === 'failed') && (
|
||||
<Button
|
||||
variant="ghost"
|
||||
size="icon"
|
||||
onClick={() => handleRemove(index)}
|
||||
className="text-destructive hover:bg-destructive/10"
|
||||
>
|
||||
<X size={18} />
|
||||
</Button>
|
||||
)}
|
||||
</div>
|
||||
</div>
|
||||
);
|
||||
})}
|
||||
</div>
|
||||
)}
|
||||
</CardContent>
|
||||
</Card>
|
||||
|
||||
{/* 使用说明 */}
|
||||
<Card className="border-none shadow-md bg-gradient-to-br from-primary/5 to-purple-500/5">
|
||||
<CardHeader className="pb-4">
|
||||
<CardTitle className="flex items-center gap-2">
|
||||
<FileText className="text-primary" size={20} />
|
||||
使用说明
|
||||
</CardTitle>
|
||||
</CardHeader>
|
||||
<CardContent>
|
||||
<div className="space-y-3 text-sm text-muted-foreground">
|
||||
<div className="flex gap-3">
|
||||
<div className="w-6 h-6 rounded-full bg-primary/10 text-primary flex items-center justify-center shrink-0 text-xs font-bold">1</div>
|
||||
<p>上传要转换的文件，支持 Word(.docx)、Excel(.xlsx)、文本(.txt)、Markdown(.md) 格式</p>
|
||||
</div>
|
||||
<div className="flex gap-3">
|
||||
<div className="w-6 h-6 rounded-full bg-primary/10 text-primary flex items-center justify-center shrink-0 text-xs font-bold">2</div>
|
||||
<p>点击「开始转换」按钮，系统将自动将文件转换为 PDF 格式</p>
|
||||
</div>
|
||||
<div className="flex gap-3">
|
||||
<div className="w-6 h-6 rounded-full bg-primary/10 text-primary flex items-center justify-center shrink-0 text-xs font-bold">3</div>
|
||||
<p>转换完成后，点击下载按钮获取 PDF 文件，或使用「打包下载」一次性下载所有文件</p>
|
||||
</div>
|
||||
</div>
|
||||
</CardContent>
|
||||
</Card>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
);
|
||||
};
|
||||
|
||||
export default PdfConverter;
|
||||
@@ -4,6 +4,7 @@ import Documents from '@/pages/Documents';
|
||||
import TemplateFill from '@/pages/TemplateFill';
|
||||
import InstructionChat from '@/pages/InstructionChat';
|
||||
import TaskHistory from '@/pages/TaskHistory';
|
||||
import PdfConverter from '@/pages/PdfConverter';
|
||||
import MainLayout from '@/components/layouts/MainLayout';
|
||||
|
||||
export const routes = [
|
||||
@@ -31,6 +32,10 @@ export const routes = [
|
||||
path: '/task-history',
|
||||
element: <TaskHistory />,
|
||||
},
|
||||
{
|
||||
path: '/pdf-converter',
|
||||
element: <PdfConverter />,
|
||||
},
|
||||
],
|
||||
},
|
||||
{
|
||||
|
||||
@@ -23,7 +23,6 @@
|
||||
"noUnusedParameters": true,
|
||||
"noFallthroughCasesInSwitch": true,
|
||||
"noUncheckedSideEffectImports": true,
|
||||
"baseUrl": ".",
|
||||
"paths": {
|
||||
"@/*": ["./src/*"]
|
||||
},
|
||||
|
||||
BIN
屏幕截图 2026-04-18 002609.png
Normal file
BIN
屏幕截图 2026-04-18 002609.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 552 KiB |
Reference in New Issue
Block a user