dj
e5d4724e82
- 新增对话历史管理：MongoDB新增conversations集合，存储用户与AI的对话上下文，支持多轮对话意图延续
- 新增对话历史API（conversation.py）：GET/DELETE conversation历史、列出所有会话
- 意图解析增强：支持基于对话历史的意图识别，上下文理解更准确
- 字段提取优化：支持"提取文档中的医院数量"等自然语言模式，智能去除"文档中的"前缀
- 文档对比优化：从指令中提取文件名并精确匹配source_docs，支持"对比A和B两个文档"
- 文档摘要优化：使用LLM生成真实AI摘要而非返回原始文档预览
【Word模板填表核心功能】
- Word模板字段生成：空白Word上传后，自动从源文档（Excel/Word/TXT/MD）内容AI生成字段名
- Word模板填表（_fill_docx）：将提取数据写入Word模板表格，支持精确匹配、模糊匹配、追加新行
- 数据润色（_polish_word_filled_data）：LLM对多行Excel数据进行统计归纳（合计/平均/极值），转化为专业自然语言描述
- 段落格式输出：使用📌字段名+值段落+分隔线（灰色横线）格式，提升可读性
- 导出链打通：fill_template返回filled_file_path，export直接返回已填好的Word文件
【其他修复】
- 修复Word导出Windows文件锁问题：NamedTemporaryFile改为mkstemp+close
- 修复Word方框非法字符：扩展clean_text移除\uFFFD、□等Unicode替代符和零宽字符
- 修复文档对比"需要至少2个文档"：从指令提取具体文件名优先匹配而非取前2个
- 修复导出format硬编码：自动识别docx/xlsx格式
- Docx解析器增加备用解析方法和更完整的段落/表格/标题提取
- RAG服务新增MySQL数据源支持
490 lines
17 KiB
Python
490 lines
17 KiB
Python
"""
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文档管理 API 接口
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支持多格式文档(docx/xlsx/md/txt)上传、解析、存储和RAG索引
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集成 Excel 存储和 AI 生成字段描述
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"""
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import asyncio
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import logging
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import uuid
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from typing import List, Optional
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from fastapi import APIRouter, UploadFile, File, HTTPException, Query, BackgroundTasks
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from pydantic import BaseModel
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from app.services.file_service import file_service
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from app.core.database import mongodb, redis_db
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from app.services.rag_service import rag_service
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from app.services.table_rag_service import table_rag_service
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from app.services.excel_storage_service import excel_storage_service
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from app.core.document_parser import ParserFactory, ParseResult
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logger = logging.getLogger(__name__)
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router = APIRouter(prefix="/upload", tags=["文档上传"])
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# ==================== 辅助函数 ====================
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async def update_task_status(
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task_id: str,
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status: str,
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progress: int = 0,
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message: str = "",
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result: dict = None,
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error: str = None
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):
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"""
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更新任务状态，同时写入 Redis 和 MongoDB
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Args:
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task_id: 任务ID
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status: 状态
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progress: 进度
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message: 消息
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result: 结果
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error: 错误信息
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"""
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meta = {"progress": progress, "message": message}
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if result:
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meta["result"] = result
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if error:
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meta["error"] = error
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# 尝试写入 Redis
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try:
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await redis_db.set_task_status(task_id, status, meta)
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except Exception as e:
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logger.warning(f"Redis 任务状态更新失败: {e}")
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# 尝试写入 MongoDB（作为备用）
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try:
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await mongodb.update_task(
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task_id=task_id,
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status=status,
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message=message,
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result=result,
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error=error
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)
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except Exception as e:
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logger.warning(f"MongoDB 任务状态更新失败: {e}")
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# ==================== 请求/响应模型 ====================
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class UploadResponse(BaseModel):
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task_id: str
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file_count: int
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message: str
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status_url: str
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class TaskStatusResponse(BaseModel):
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task_id: str
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status: str
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progress: int = 0
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message: Optional[str] = None
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result: Optional[dict] = None
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error: Optional[str] = None
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# ==================== 文档上传接口 ====================
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@router.post("/document", response_model=UploadResponse)
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async def upload_document(
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background_tasks: BackgroundTasks,
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file: UploadFile = File(...),
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parse_all_sheets: bool = Query(False, description="是否解析所有工作表(仅Excel)"),
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sheet_name: Optional[str] = Query(None, description="指定工作表(仅Excel)"),
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header_row: int = Query(0, description="表头行号(仅Excel)")
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):
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"""
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上传单个文档并异步处理
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文档会：
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1. 保存到本地存储
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2. 解析内容
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3. 存入 MongoDB (原始内容)
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4. 如果是 Excel：
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- 存入 MySQL (结构化数据)
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- AI 生成字段描述
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- 建立 RAG 索引
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5. 建立 RAG 索引 (非结构化文档)
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"""
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if not file.filename:
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raise HTTPException(status_code=400, detail="文件名为空")
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file_ext = file.filename.split('.')[-1].lower()
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if file_ext not in ['docx', 'xlsx', 'xls', 'md', 'txt']:
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raise HTTPException(
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status_code=400,
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detail=f"不支持的文件类型: {file_ext}，仅支持 docx/xlsx/xls/md/txt"
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)
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task_id = str(uuid.uuid4())
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try:
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# 保存任务记录到 MongoDB（如果 Redis 不可用时仍能查询）
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try:
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await mongodb.insert_task(
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task_id=task_id,
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task_type="document_parse",
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status="pending",
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message=f"文档 {file.filename} 已提交处理"
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)
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except Exception as mongo_err:
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logger.warning(f"MongoDB 保存任务记录失败: {mongo_err}")
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content = await file.read()
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saved_path = file_service.save_uploaded_file(
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content,
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file.filename,
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subfolder=file_ext
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)
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background_tasks.add_task(
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process_document,
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task_id=task_id,
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file_path=saved_path,
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original_filename=file.filename,
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doc_type=file_ext,
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parse_options={
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"parse_all_sheets": parse_all_sheets,
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"sheet_name": sheet_name,
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"header_row": header_row
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}
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)
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return UploadResponse(
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task_id=task_id,
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file_count=1,
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message=f"文档 {file.filename} 已提交处理",
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status_url=f"/api/v1/tasks/{task_id}"
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)
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except Exception as e:
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logger.error(f"上传文档失败: {str(e)}")
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raise HTTPException(status_code=500, detail=f"上传失败: {str(e)}")
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@router.post("/documents", response_model=UploadResponse)
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async def upload_documents(
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background_tasks: BackgroundTasks,
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files: List[UploadFile] = File(...),
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):
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"""批量上传文档"""
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if not files:
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raise HTTPException(status_code=400, detail="没有上传文件")
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task_id = str(uuid.uuid4())
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saved_paths = []
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try:
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# 保存任务记录到 MongoDB
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try:
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await mongodb.insert_task(
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task_id=task_id,
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task_type="batch_parse",
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status="pending",
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message=f"已提交 {len(files)} 个文档处理"
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)
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except Exception as mongo_err:
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logger.warning(f"MongoDB 保存批量任务记录失败: {mongo_err}")
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for file in files:
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if not file.filename:
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continue
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content = await file.read()
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saved_path = file_service.save_uploaded_file(content, file.filename, subfolder="batch")
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saved_paths.append({
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"path": saved_path,
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"filename": file.filename,
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"ext": file.filename.split('.')[-1].lower()
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})
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background_tasks.add_task(process_documents_batch, task_id=task_id, files=saved_paths)
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return UploadResponse(
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task_id=task_id,
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file_count=len(saved_paths),
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message=f"已提交 {len(saved_paths)} 个文档处理",
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status_url=f"/api/v1/tasks/{task_id}"
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)
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except Exception as e:
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logger.error(f"批量上传失败: {str(e)}")
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raise HTTPException(status_code=500, detail=f"批量上传失败: {str(e)}")
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# ==================== 任务处理函数 ====================
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async def process_document(
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task_id: str,
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file_path: str,
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original_filename: str,
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doc_type: str,
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parse_options: dict
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):
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"""处理单个文档"""
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try:
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# 状态: 解析中
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await update_task_status(
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task_id, status="processing",
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progress=10, message="正在解析文档"
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)
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# 解析文档
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parser = ParserFactory.get_parser(file_path)
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result = parser.parse(file_path)
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if not result.success:
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raise Exception(result.error or "解析失败")
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# 状态: 存储中
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await update_task_status(
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task_id, status="processing",
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progress=30, message="正在存储数据"
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)
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# 存储到 MongoDB
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doc_id = await mongodb.insert_document(
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doc_type=doc_type,
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content=result.data.get("content", ""),
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metadata={
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**result.metadata,
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"original_filename": original_filename,
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"file_path": file_path
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},
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structured_data=result.data.get("structured_data")
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)
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# 如果是 Excel，存储到 MySQL + AI生成描述 + RAG索引
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mysql_table_name = None
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if doc_type in ["xlsx", "xls"]:
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await update_task_status(
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task_id, status="processing",
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progress=50, message="正在存储到MySQL并生成字段描述"
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)
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try:
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# 使用 TableRAG 服务存储到 MySQL（跳过 RAG 索引以提升速度）
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logger.info(f"开始存储Excel到MySQL: {original_filename}, file_path: {file_path}")
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rag_result = await table_rag_service.build_table_rag_index(
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file_path=file_path,
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filename=original_filename,
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sheet_name=parse_options.get("sheet_name"),
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header_row=parse_options.get("header_row", 0),
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skip_rag_index=True # 跳过 AI 字段描述生成和索引
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)
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if rag_result.get("success"):
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mysql_table_name = rag_result.get('table_name')
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logger.info(f"Excel存储到MySQL成功: {original_filename}, table: {mysql_table_name}")
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# 更新 MongoDB 中的 metadata，记录 MySQL 表名
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try:
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doc = await mongodb.get_document(doc_id)
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if doc:
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metadata = doc.get("metadata", {})
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metadata["mysql_table_name"] = mysql_table_name
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await mongodb.update_document_metadata(doc_id, metadata)
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logger.info(f"已更新 MongoDB 文档的 mysql_table_name: {mysql_table_name}")
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except Exception as update_err:
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logger.warning(f"更新 MongoDB mysql_table_name 失败: {update_err}")
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else:
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logger.error(f"RAG索引构建失败: {rag_result.get('error')}")
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except Exception as e:
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logger.error(f"Excel存储到MySQL异常: {str(e)}", exc_info=True)
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else:
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# 非结构化文档
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structured_data = result.data.get("structured_data", {})
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tables = structured_data.get("tables", [])
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# 如果文档中有表格数据，提取并存储到 MySQL（不需要 RAG 索引）
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if tables:
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await update_task_status(
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task_id, status="processing",
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progress=60, message="正在存储表格数据"
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)
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# 对每个表格建立 MySQL 表（跳过 RAG 索引，速度更快）
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for table_info in tables:
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await table_rag_service.index_document_table(
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doc_id=doc_id,
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filename=original_filename,
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table_data=table_info,
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source_doc_type=doc_type
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)
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# 对文档内容建立 RAG 索引（非结构化文本需要语义搜索）
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content = result.data.get("content", "")
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if content and len(content) > 50: # 只有内容足够长才建立索引
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await update_task_status(
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task_id, status="processing",
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progress=80, message="正在建立语义索引"
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)
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await index_document_to_rag(doc_id, original_filename, result, doc_type)
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# 完成
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await update_task_status(
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task_id, status="success",
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progress=100, message="处理完成",
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result={
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"doc_id": doc_id,
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"doc_type": doc_type,
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"filename": original_filename
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}
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)
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logger.info(f"文档处理完成: {original_filename}, doc_id: {doc_id}")
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except Exception as e:
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logger.error(f"文档处理失败: {str(e)}")
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await update_task_status(
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task_id, status="failure",
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progress=0, message="处理失败",
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error=str(e)
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)
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async def process_documents_batch(task_id: str, files: List[dict]):
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"""批量并行处理文档"""
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try:
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await update_task_status(
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task_id, status="processing",
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progress=0, message=f"开始批量处理 {len(files)} 个文档",
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result={"total": len(files), "files": []}
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)
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async def process_single_file(file_info: dict, index: int) -> dict:
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"""处理单个文件"""
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filename = file_info["filename"]
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try:
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# 解析文档
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parser = ParserFactory.get_parser(file_info["path"])
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result = parser.parse(file_info["path"])
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if not result.success:
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return {"index": index, "filename": filename, "success": False, "error": result.error or "解析失败"}
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# 存储到 MongoDB
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doc_id = await mongodb.insert_document(
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doc_type=file_info["ext"],
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content=result.data.get("content", ""),
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metadata={
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**result.metadata,
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"original_filename": filename,
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"file_path": file_info["path"]
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},
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structured_data=result.data.get("structured_data")
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)
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# Excel 处理
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if file_info["ext"] in ["xlsx", "xls"]:
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await table_rag_service.build_table_rag_index(
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file_path=file_info["path"],
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filename=filename,
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skip_rag_index=True # 跳过 AI 字段描述生成和索引
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)
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else:
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# 非结构化文档
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structured_data = result.data.get("structured_data", {})
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tables = structured_data.get("tables", [])
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# 表格数据直接存 MySQL（跳过 RAG 索引）
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if tables:
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for table_info in tables:
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await table_rag_service.index_document_table(
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doc_id=doc_id,
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filename=filename,
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table_data=table_info,
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source_doc_type=file_info["ext"]
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)
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# 只有内容足够长才建立语义索引
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content = result.data.get("content", "")
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if content and len(content) > 50:
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await index_document_to_rag(doc_id, filename, result, file_info["ext"])
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return {"index": index, "filename": filename, "doc_id": doc_id, "success": True}
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except Exception as e:
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logger.error(f"处理文件 {filename} 失败: {e}")
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return {"index": index, "filename": filename, "success": False, "error": str(e)}
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# 并行处理所有文档
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tasks = [process_single_file(f, i) for i, f in enumerate(files)]
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results = await asyncio.gather(*tasks)
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# 按原始顺序排序
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results.sort(key=lambda x: x["index"])
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# 统计成功/失败数量
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success_count = sum(1 for r in results if r["success"])
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fail_count = len(results) - success_count
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# 更新最终状态
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await update_task_status(
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task_id, status="success",
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progress=100, message=f"批量处理完成: {success_count} 成功, {fail_count} 失败",
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result={
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"total": len(files),
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"success": success_count,
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"failure": fail_count,
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"results": results
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}
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)
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logger.info(f"批量处理完成: {success_count}/{len(files)} 成功")
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except Exception as e:
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logger.error(f"批量处理失败: {str(e)}")
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await update_task_status(
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task_id, status="failure",
|
||
progress=0, message="批量处理失败",
|
||
error=str(e)
|
||
)
|
||
|
||
|
||
async def index_document_to_rag(doc_id: str, filename: str, result: ParseResult, doc_type: str):
|
||
"""将非结构化文档索引到 RAG（使用分块索引，异步执行）"""
|
||
try:
|
||
content = result.data.get("content", "")
|
||
if content:
|
||
# 使用异步方法索引，避免阻塞事件循环
|
||
await rag_service.index_document_content_async(
|
||
doc_id=doc_id,
|
||
content=content,
|
||
metadata={
|
||
"filename": filename,
|
||
"doc_type": doc_type
|
||
},
|
||
chunk_size=1000, # 每块 1000 字符，提升速度
|
||
chunk_overlap=100 # 块之间 100 字符重叠
|
||
)
|
||
logger.info(f"RAG 索引完成: {filename}, doc_id={doc_id}")
|
||
except Exception as e:
|
||
logger.warning(f"RAG 索引失败: {str(e)}")
|
||
|
||
|
||
# ==================== 文档解析接口 ====================
|
||
|
||
@router.post("/document/parse")
|
||
async def parse_uploaded_document(
|
||
file_path: str = Query(..., description="文件路径")
|
||
):
|
||
"""解析已上传的文档"""
|
||
try:
|
||
parser = ParserFactory.get_parser(file_path)
|
||
result = parser.parse(file_path)
|
||
|
||
if result.success:
|
||
return result.to_dict()
|
||
else:
|
||
raise HTTPException(status_code=400, detail=result.error)
|
||
|
||
except ValueError as e:
|
||
raise HTTPException(status_code=400, detail=str(e))
|
||
except Exception as e:
|
||
logger.error(f"解析文档失败: {str(e)}")
|
||
raise HTTPException(status_code=500, detail=f"解析失败: {str(e)}")
|