新增从文档中心选择源文档功能及删除功能

智能填表模块新增"从文档中心选择"模式，支持选择已上传的文档作为数据源，
同时支持从列表中删除文档。两种模式通过Tab切换。

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend/app/core/document_parser/xlsx_parser.py

@@ -317,24 +317,70 @@ class XlsxParser(BaseParser):
         import zipfile
         from xml.etree import ElementTree as ET
 
+        # 常见的命名空间
+        COMMON_NAMESPACES = [
+            'http://schemas.openxmlformats.org/spreadsheetml/2006/main',
+            'http://schemas.openxmlformats.org/spreadsheetml/2005/main',
+            'http://schemas.openxmlformats.org/spreadsheetml/2004/main',
+            'http://schemas.openxmlformats.org/spreadsheetml/2003/main',
+        ]
+
         try:
             with zipfile.ZipFile(file_path, 'r') as z:
-                if 'xl/workbook.xml' not in z.namelist():
+                # 尝试多种可能的 workbook.xml 路径
+                possible_paths = ['xl/workbook.xml', 'xl\\workbook.xml', 'workbook.xml']
+                content = None
+                for path in possible_paths:
+                    if path in z.namelist():
+                        content = z.read(path)
+                        logger.info(f"找到 workbook.xml at: {path}")
+                        break
+
+                if content is None:
+                    logger.warning(f"未找到 workbook.xml，文件列表: {z.namelist()[:10]}")
                     return []
-                content = z.read('xl/workbook.xml')
+
                 root = ET.fromstring(content)
 
-                # 命名空间
-                ns = {'main': 'http://schemas.openxmlformats.org/spreadsheetml/2006/main'}
-
                 sheet_names = []
-                for sheet in root.findall('.//main:sheet', ns):
-                    name = sheet.get('name')
-                    if name:
-                        sheet_names.append(name)
+
+                # 方法1：尝试带命名空间的查找
+                for ns in COMMON_NAMESPACES:
+                    sheet_elements = root.findall(f'.//{{{ns}}}sheet')
+                    if sheet_elements:
+                        for sheet in sheet_elements:
+                            name = sheet.get('name')
+                            if name:
+                                sheet_names.append(name)
+                        if sheet_names:
+                            logger.info(f"使用命名空间 {ns} 提取工作表: {sheet_names}")
+                            return sheet_names
+
+                # 方法2：不使用命名空间，直接查找所有 sheet 元素
+                if not sheet_names:
+                    for elem in root.iter():
+                        if elem.tag.endswith('sheet') and elem.tag != 'sheets':
+                            name = elem.get('name')
+                            if name:
+                                sheet_names.append(name)
+                            for child in elem:
+                                if child.tag.endswith('sheet') or child.tag == 'sheet':
+                                    name = child.get('name')
+                                    if name and name not in sheet_names:
+                                        sheet_names.append(name)
+
+                # 方法3：直接从 XML 文本中正则匹配 sheet name
+                if not sheet_names:
+                    import re
+                    xml_str = content.decode('utf-8', errors='ignore')
+                    matches = re.findall(r'<sheet\s+[^>]*name=["\']([^"\']+)["\']', xml_str, re.IGNORECASE)
+                    if matches:
+                        sheet_names = matches
+                        logger.info(f"使用正则提取工作表: {sheet_names}")
 
                 logger.info(f"从 XML 提取工作表: {sheet_names}")
                 return sheet_names
+
         except Exception as e:
             logger.error(f"从 XML 提取工作表名称失败: {e}")
             return []
@@ -356,6 +402,32 @@ class XlsxParser(BaseParser):
         import zipfile
         from xml.etree import ElementTree as ET
 
+        # 常见的命名空间
+        COMMON_NAMESPACES = [
+            'http://schemas.openxmlformats.org/spreadsheetml/2006/main',
+            'http://schemas.openxmlformats.org/spreadsheetml/2005/main',
+            'http://schemas.openxmlformats.org/spreadsheetml/2004/main',
+            'http://schemas.openxmlformats.org/spreadsheetml/2003/main',
+        ]
+
+        def find_elements_with_ns(root, tag_name):
+            """灵活查找元素，支持任意命名空间"""
+            results = []
+            # 方法1：用固定命名空间
+            for ns in COMMON_NAMESPACES:
+                try:
+                    elems = root.findall(f'.//{{{ns}}}{tag_name}')
+                    if elems:
+                        results.extend(elems)
+                except:
+                    pass
+            # 方法2：不带命名空间查找
+            if not results:
+                for elem in root.iter():
+                    if elem.tag.endswith('}' + tag_name):
+                        results.append(elem)
+            return results
+
         with zipfile.ZipFile(file_path, 'r') as z:
             # 获取工作表名称
             sheet_names = self._extract_sheet_names_from_xml(file_path)
@@ -366,57 +438,68 @@ class XlsxParser(BaseParser):
             target_sheet = sheet_name if sheet_name and sheet_name in sheet_names else sheet_names[0]
             sheet_index = sheet_names.index(target_sheet) + 1  # sheet1.xml, sheet2.xml, ...
 
-            # 读取 shared strings
+            # 读取 shared strings - 尝试多种路径
             shared_strings = []
-            if 'xl/sharedStrings.xml' in z.namelist():
-                ss_content = z.read('xl/sharedStrings.xml')
-                ss_root = ET.fromstring(ss_content)
-                ns = {'main': 'http://schemas.openxmlformats.org/spreadsheetml/2006/main'}
-                for si in ss_root.findall('.//main:si', ns):
-                    t = si.find('.//main:t', ns)
-                    if t is not None:
-                        shared_strings.append(t.text or '')
-                    else:
-                        shared_strings.append('')
+            ss_paths = ['xl/sharedStrings.xml', 'xl\\sharedStrings.xml', 'sharedStrings.xml']
+            for ss_path in ss_paths:
+                if ss_path in z.namelist():
+                    try:
+                        ss_content = z.read(ss_path)
+                        ss_root = ET.fromstring(ss_content)
+                        for si in find_elements_with_ns(ss_root, 'si'):
+                            t_elements = [c for c in si if c.tag.endswith('}t') or c.tag == 't']
+                            if t_elements:
+                                shared_strings.append(t_elements[0].text or '')
+                            else:
+                                shared_strings.append('')
+                        break
+                    except Exception as e:
+                        logger.warning(f"读取 sharedStrings 失败: {e}")
 
-            # 读取工作表
-            sheet_file = f'xl/worksheets/sheet{sheet_index}.xml'
-            if sheet_file not in z.namelist():
-                raise ValueError(f"工作表文件 {sheet_file} 不存在")
+            # 读取工作表 - 尝试多种可能的路径
+            sheet_content = None
+            sheet_paths = [
+                f'xl/worksheets/sheet{sheet_index}.xml',
+                f'xl\\worksheets\\sheet{sheet_index}.xml',
+                f'worksheets/sheet{sheet_index}.xml',
+            ]
+            for sp in sheet_paths:
+                if sp in z.namelist():
+                    sheet_content = z.read(sp)
+                    break
+
+            if sheet_content is None:
+                raise ValueError(f"工作表文件 sheet{sheet_index}.xml 不存在")
 
-            sheet_content = z.read(sheet_file)
             root = ET.fromstring(sheet_content)
-            ns = {'main': 'http://schemas.openxmlformats.org/spreadsheetml/2006/main'}
 
             # 收集所有行数据
             all_rows = []
             headers = {}
 
-            for row in root.findall('.//main:row', ns):
+            for row in find_elements_with_ns(root, 'row'):
                 row_idx = int(row.get('r', 0))
                 row_cells = {}
-                for cell in row.findall('main:c', ns):
+                for cell in find_elements_with_ns(row, 'c'):
                     cell_ref = cell.get('r', '')
                     col_letters = ''.join(filter(str.isalpha, cell_ref))
                     cell_type = cell.get('t', 'n')
-                    v = cell.find('main:v', ns)
+                    v_elements = find_elements_with_ns(cell, 'v')
+                    v = v_elements[0] if v_elements else None
 
                     if v is not None and v.text:
                         if cell_type == 's':
-                            # shared string
                             try:
                                 row_cells[col_letters] = shared_strings[int(v.text)]
                             except (ValueError, IndexError):
                                 row_cells[col_letters] = v.text
                         elif cell_type == 'b':
-                            # boolean
                             row_cells[col_letters] = v.text == '1'
                         else:
                             row_cells[col_letters] = v.text
                     else:
                         row_cells[col_letters] = None
 
-                # 处理表头行
                 if row_idx == header_row + 1:
                     headers = {**row_cells}
                 elif row_idx > header_row + 1:
@@ -424,7 +507,6 @@ class XlsxParser(BaseParser):
 
             # 构建 DataFrame
             if headers:
-                # 按原始列顺序排列
                 col_order = list(headers.keys())
                 df = pd.DataFrame(all_rows)
                 if not df.empty:

backend/app/services/template_fill_service.py

@@ -78,12 +78,19 @@ class TemplateFillService:
         fill_details = []
 
         logger.info(f"开始填表: {len(template_fields)} 个字段, {len(source_doc_ids or [])} 个源文档")
+        logger.info(f"source_doc_ids: {source_doc_ids}")
+        logger.info(f"source_file_paths: {source_file_paths}")
 
         # 1. 加载源文档内容
         source_docs = await self._load_source_documents(source_doc_ids, source_file_paths)
 
         logger.info(f"加载了 {len(source_docs)} 个源文档")
 
+        # 打印每个加载的文档的详细信息
+        for i, doc in enumerate(source_docs):
+            logger.info(f"  文档[{i}]: id={doc.doc_id}, filename={doc.filename}, doc_type={doc.doc_type}")
+            logger.info(f"    content长度: {len(doc.content)}, structured_data keys: {list(doc.structured_data.keys()) if doc.structured_data else 'None'}")
+
         if not source_docs:
             logger.warning("没有找到源文档，填表结果将全部为空")
 
@@ -158,14 +165,49 @@ class TemplateFillService:
                 try:
                     doc = await mongodb.get_document(doc_id)
                     if doc:
+                        sd = doc.get("structured_data", {})
+                        sd_keys = list(sd.keys()) if sd else []
+                        logger.info(f"从MongoDB加载文档: {doc_id}, doc_type={doc.get('doc_type')}, structured_data keys={sd_keys}")
+
+                        # 如果 structured_data 为空，但有 file_path，尝试重新解析文件
+                        doc_content = doc.get("content", "")
+                        if not sd or (not sd.get("tables") and not sd.get("headers") and not sd.get("rows")):
+                            file_path = doc.get("metadata", {}).get("file_path")
+                            if file_path:
+                                logger.info(f"  structured_data 为空，尝试重新解析文件: {file_path}")
+                                try:
+                                    parser = ParserFactory.get_parser(file_path)
+                                    result = parser.parse(file_path)
+                                    if result.success and result.data:
+                                        if result.data.get("structured_data"):
+                                            sd = result.data.get("structured_data")
+                                            logger.info(f"  重新解析成功，structured_data keys: {list(sd.keys())}")
+                                        elif result.data.get("tables"):
+                                            sd = {"tables": result.data.get("tables", [])}
+                                            logger.info(f"  使用 data.tables，tables数量: {len(sd.get('tables', []))}")
+                                        elif result.data.get("rows"):
+                                            sd = result.data
+                                            logger.info(f"  使用 data.rows 格式")
+                                        if result.data.get("content"):
+                                            doc_content = result.data.get("content", "")
+                                    else:
+                                        logger.warning(f"  重新解析失败: {result.error if result else 'unknown'}")
+                                except Exception as parse_err:
+                                    logger.error(f"  重新解析文件异常: {str(parse_err)}")
+
+                        if sd.get("tables"):
+                            logger.info(f"  tables数量: {len(sd.get('tables', []))}")
+                            if sd["tables"]:
+                                first_table = sd["tables"][0]
+                                logger.info(f"  第一表格: headers={first_table.get('headers', [])[:3]}..., rows数量={len(first_table.get('rows', []))}")
+
                         source_docs.append(SourceDocument(
                             doc_id=doc_id,
                             filename=doc.get("metadata", {}).get("original_filename", "unknown"),
                             doc_type=doc.get("doc_type", "unknown"),
-                            content=doc.get("content", ""),
-                            structured_data=doc.get("structured_data", {})
+                            content=doc_content,
+                            structured_data=sd
                         ))
-                        logger.info(f"从MongoDB加载文档: {doc_id}")
                 except Exception as e:
                     logger.error(f"从MongoDB加载文档失败 {doc_id}: {str(e)}")
 
@@ -179,10 +221,48 @@ class TemplateFillService:
                         # result.data 的结构取决于解析器类型:
                         # - Excel 单 sheet: {columns: [...], rows: [...], row_count, column_count}
                         # - Excel 多 sheet: {sheets: {sheet_name: {columns, rows, ...}}}
+                        # - Markdown: {content: "...", tables: [...], structured_data: {tables: [...]}}
                         # - Word/TXT: {content: "...", structured_data: {...}}
                         doc_data = result.data if result.data else {}
                         doc_content = doc_data.get("content", "") if isinstance(doc_data, dict) else ""
-                        doc_structured = doc_data if isinstance(doc_data, dict) and "rows" in doc_data or isinstance(doc_data, dict) and "sheets" in doc_data else {}
+
+                        # 检查并提取 structured_data
+                        doc_structured = {}
+                        if isinstance(doc_data, dict):
+                            logger.info(f"文档 {file_path} doc_data keys: {list(doc_data.keys())}")
+
+                            # Excel 多 sheet
+                            if "sheets" in doc_data:
+                                doc_structured = doc_data
+                                logger.info(f"  -> 使用 Excel 多 sheet 格式")
+                            # Excel 单 sheet 或有 rows 的格式
+                            elif "rows" in doc_data:
+                                doc_structured = doc_data
+                                logger.info(f"  -> 使用 rows 格式，列数: {len(doc_data.get('columns', []))}")
+                            # Markdown 格式：tables 可能直接在 doc_data.tables 或在 structured_data.tables 中
+                            elif "tables" in doc_data and doc_data["tables"]:
+                                # Markdown: tables 直接在 doc_data 中
+                                tables = doc_data["tables"]
+                                first_table = tables[0]
+                                doc_structured = {
+                                    "headers": first_table.get("headers", []),
+                                    "rows": first_table.get("rows", [])
+                                }
+                                logger.info(f"  -> 使用 doc_data.tables 格式，表头: {doc_structured.get('headers', [])[:5]}")
+                            elif "structured_data" in doc_data and isinstance(doc_data["structured_data"], dict):
+                                # Markdown: tables 在 structured_data 中
+                                tables = doc_data["structured_data"].get("tables", [])
+                                if tables:
+                                    first_table = tables[0]
+                                    doc_structured = {
+                                        "headers": first_table.get("headers", []),
+                                        "rows": first_table.get("rows", [])
+                                    }
+                                    logger.info(f"  -> 使用 structured_data.tables 格式，表头: {doc_structured.get('headers', [])[:5]}")
+                                else:
+                                    logger.warning(f"  -> structured_data.tables 为空")
+                            else:
+                                logger.warning(f"  -> 未识别的文档格式，无 structured_data")
 
                         source_docs.append(SourceDocument(
                             doc_id=file_path,
@@ -279,7 +359,7 @@ class TemplateFillService:
             response = await self.llm.chat(
                 messages=messages,
                 temperature=0.1,
-                max_tokens=50000
+                max_tokens=4000
             )
 
             content = self.llm.extract_message_content(response)
@@ -738,7 +818,7 @@ class TemplateFillService:
 
     def _extract_values_from_structured_data(self, source_docs: List[SourceDocument], field_name: str) -> List[str]:
         """
-        从结构化数据（Excel rows）中直接提取指定列的值
+        从结构化数据（Excel rows 或 Markdown tables）中直接提取指定列的值
 
         适用于有 rows 结构的文档数据，无需 LLM 即可提取
 
@@ -750,10 +830,15 @@ class TemplateFillService:
             值列表，如果无法提取则返回空列表
         """
         all_values = []
+        logger.info(f"[_extract_values_from_structured_data] 开始提取字段: {field_name}")
+        logger.info(f"  source_docs 数量: {len(source_docs)}")
 
-        for doc in source_docs:
+        for doc_idx, doc in enumerate(source_docs):
             # 尝试从 structured_data 中提取
             structured = doc.structured_data
+            logger.info(f"  文档[{doc_idx}]: {doc.filename}, structured类型: {type(structured)}, 是否为空: {not bool(structured)}")
+            if structured:
+                logger.info(f"    structured_data keys: {list(structured.keys())}")
 
             if not structured:
                 continue
@@ -773,6 +858,33 @@ class TemplateFillService:
                 if all_values:
                     break
 
+            # 处理 Markdown 表格格式: {headers: [...], rows: [...], ...}
+            elif structured.get("headers") and structured.get("rows"):
+                headers = structured.get("headers", [])
+                rows = structured.get("rows", [])
+                values = self._extract_values_from_markdown_table(headers, rows, field_name)
+                if values:
+                    all_values.extend(values)
+                    logger.info(f"从 Markdown 文档 {doc.filename} 提取到 {len(values)} 个值")
+                    break
+
+            # 处理 MongoDB 存储的 tables 格式: {tables: [{headers, rows, ...}, ...]}
+            elif structured.get("tables") and isinstance(structured.get("tables"), list):
+                tables = structured.get("tables", [])
+                logger.info(f"  检测到 tables 格式，共 {len(tables)} 个表")
+                for table_idx, table in enumerate(tables):
+                    if isinstance(table, dict):
+                        headers = table.get("headers", [])
+                        rows = table.get("rows", [])
+                        logger.info(f"  表格[{table_idx}]: headers={headers[:3]}..., rows数量={len(rows)}")
+                        values = self._extract_values_from_markdown_table(headers, rows, field_name)
+                        if values:
+                            all_values.extend(values)
+                            logger.info(f"从表格[{table_idx}] 提取到 {len(values)} 个值")
+                            break
+                if all_values:
+                    break
+
             # 处理单 sheet 格式: {columns: [...], rows: [...]}
             elif structured.get("rows"):
                 columns = structured.get("columns", [])
@@ -800,6 +912,100 @@ class TemplateFillService:
 
         return all_values
 
+    def _extract_values_from_markdown_table(self, headers: List, rows: List, field_name: str) -> List[str]:
+        """
+        从 Markdown 表格中提取指定列的值
+
+        Markdown 表格格式:
+        - headers: ["col1", "col2", ...]
+        - rows: [["val1", "val2", ...], ...]
+
+        Args:
+            headers: 表头列表
+            rows: 数据行列表
+            field_name: 要提取的字段名
+
+        Returns:
+            值列表
+        """
+        if not rows or not headers:
+            logger.warning(f"Markdown 表格为空: headers={headers}, rows={len(rows) if rows else 0}")
+            return []
+
+        # 查找匹配的列索引 - 使用增强的匹配算法
+        target_idx = self._find_best_matching_column(headers, field_name)
+
+        if target_idx is None:
+            logger.warning(f"未找到匹配列: {field_name}, 可用表头: {headers}")
+            return []
+
+        logger.info(f"列匹配成功: {field_name} -> {headers[target_idx]} (索引: {target_idx})")
+
+        values = []
+        for row in rows:
+            if isinstance(row, list) and target_idx < len(row):
+                val = row[target_idx]
+            else:
+                val = ""
+            values.append(self._format_value(val))
+
+        return values
+
+    def _find_best_matching_column(self, headers: List, field_name: str) -> Optional[int]:
+        """
+        查找最佳匹配的列索引
+
+        使用多层匹配策略:
+        1. 精确匹配（忽略大小写）
+        2. 子字符串匹配（字段名在表头中，或表头在字段名中）
+        3. 关键词重叠匹配（中文字符串分割后比对）
+
+        Args:
+            headers: 表头列表
+            field_name: 要匹配的字段名
+
+        Returns:
+            匹配的列索引，找不到返回 None
+        """
+        field_lower = field_name.lower().strip()
+        field_keywords = set(field_lower.replace(" ", "").split())
+
+        best_match_idx = None
+        best_match_score = 0
+
+        for idx, header in enumerate(headers):
+            header_str = str(header).strip()
+            header_lower = header_str.lower()
+
+            # 策略1: 精确匹配（忽略大小写）
+            if header_lower == field_lower:
+                return idx
+
+            # 策略2: 子字符串匹配
+            if field_lower in header_lower or header_lower in field_lower:
+                # 计算匹配分数（较长匹配更优先）
+                score = max(len(field_lower), len(header_lower)) / min(len(field_lower) + 1, len(header_lower) + 1)
+                if score > best_match_score:
+                    best_match_score = score
+                    best_match_idx = idx
+                continue
+
+            # 策略3: 关键词重叠匹配（适用于中文）
+            header_keywords = set(header_lower.replace(" ", "").split())
+            overlap = field_keywords & header_keywords
+            if overlap and len(overlap) > 0:
+                score = len(overlap) / max(len(field_keywords), len(header_keywords), 1)
+                if score > best_match_score:
+                    best_match_score = score
+                    best_match_idx = idx
+
+        # 只有当匹配分数超过阈值时才返回
+        if best_match_score >= 0.3:
+            logger.info(f"模糊匹配: {field_name} -> {headers[best_match_idx]} (分数: {best_match_score:.2f})")
+            return best_match_idx
+
+        return None
+
     def _extract_column_values(self, rows: List, columns: List, field_name: str) -> List[str]:
         """
         从 rows 和 columns 中提取指定列的值
@@ -815,30 +1021,70 @@ class TemplateFillService:
         if not rows or not columns:
             return []
 
-        # 查找匹配的列（模糊匹配）
-        target_col = None
-        for col in columns:
-            col_str = str(col)
-            if field_name.lower() in col_str.lower() or col_str.lower() in field_name.lower():
-                target_col = col
-                break
+        # 使用增强的匹配算法查找最佳匹配的列索引
+        target_idx = self._find_best_matching_column(columns, field_name)
 
-        if not target_col:
+        if target_idx is None:
             logger.warning(f"未找到匹配列: {field_name}, 可用列: {columns}")
             return []
 
+        target_col = columns[target_idx]
+        logger.info(f"列匹配成功: {field_name} -> {target_col} (索引: {target_idx})")
+
         values = []
         for row in rows:
             if isinstance(row, dict):
                 val = row.get(target_col, "")
-            elif isinstance(row, list) and target_col in columns:
-                val = row[columns.index(target_col)]
+            elif isinstance(row, list) and target_idx < len(row):
+                val = row[target_idx]
             else:
                 val = ""
-            values.append(str(val) if val is not None else "")
+            values.append(self._format_value(val))
 
         return values
 
+    def _format_value(self, val: Any) -> str:
+        """
+        格式化值为字符串，保持原始格式
+
+        - 如果是浮点数但实际上等于整数，返回整数格式（如 3.0 -> "3"）
+        - 如果是浮点数且有小数部分，保留小数（如 3.5 -> "3.5"）
+        - 如果是整数，直接返回（如 3 -> "3"）
+        - 其他类型直接转为字符串
+
+        Args:
+            val: 原始值
+
+        Returns:
+            格式化后的字符串
+        """
+        if val is None:
+            return ""
+
+        # 如果已经是字符串
+        if isinstance(val, str):
+            return val.strip()
+
+        # 如果是布尔值
+        if isinstance(val, bool):
+            return "true" if val else "false"
+
+        # 如果是数字
+        if isinstance(val, (int, float)):
+            # 检查是否是浮点数但等于整数
+            if isinstance(val, float):
+                # 检查是否是小数部分为0
+                if val == int(val):
+                    return str(int(val))
+                else:
+                    # 去除尾部多余的0，但保留必要的小数位
+                    formatted = f"{val:.10f}".rstrip('0').rstrip('.')
+                    return formatted
+            else:
+                return str(val)
+
+        return str(val)
+
     def _extract_values_from_json(self, result) -> List[str]:
         """
         从解析后的 JSON 对象/数组中提取值数组
@@ -852,12 +1098,12 @@ class TemplateFillService:
         if isinstance(result, dict):
             # 优先找 values 数组
             if "values" in result and isinstance(result["values"], list):
-                vals = [str(v).strip() for v in result["values"] if v and str(v).strip()]
+                vals = [self._format_value(v).strip() for v in result["values"] if self._format_value(v).strip()]
                 if vals:
                     return vals
             # 尝试找 value 字段
             if "value" in result:
-                val = str(result["value"]).strip()
+                val = self._format_value(result["value"]).strip()
                 if val:
                     return [val]
             # 尝试找任何数组类型的键
@@ -865,13 +1111,13 @@ class TemplateFillService:
                 val = result[key]
                 if isinstance(val, list) and len(val) > 0:
                     if all(isinstance(v, (str, int, float, bool)) or v is None for v in val):
-                        vals = [str(v).strip() for v in val if v is not None and str(v).strip()]
+                        vals = [self._format_value(v).strip() for v in val if v is not None and self._format_value(v).strip()]
                         if vals:
                             return vals
                 elif isinstance(val, (str, int, float, bool)):
-                    return [str(val).strip()]
+                    return [self._format_value(val).strip()]
         elif isinstance(result, list):
-            vals = [str(v).strip() for v in result if v is not None and str(v).strip()]
+            vals = [self._format_value(v).strip() for v in result if v is not None and self._format_value(v).strip()]
             if vals:
                 return vals
         return []
@@ -1008,15 +1254,15 @@ class TemplateFillService:
             if isinstance(parsed, dict):
                 # 如果是 {"values": [...]} 格式，提取 values
                 if "values" in parsed and isinstance(parsed["values"], list):
-                    return [str(v).strip() for v in parsed["values"] if v and str(v).strip()]
+                    return [self._format_value(v).strip() for v in parsed["values"] if self._format_value(v).strip()]
                 # 如果是其他 dict 格式，尝试找 values 键
                 for key in ["values", "value", "data", "result"]:
                     if key in parsed and isinstance(parsed[key], list):
-                        return [str(v).strip() for v in parsed[key] if v and str(v).strip()]
+                        return [self._format_value(v).strip() for v in parsed[key] if self._format_value(v).strip()]
                     elif key in parsed:
-                        return [str(parsed[key]).strip()]
+                        return [self._format_value(parsed[key]).strip()]
             elif isinstance(parsed, list):
-                return [str(v).strip() for v in parsed if v and str(v).strip()]
+                return [self._format_value(v).strip() for v in parsed if self._format_value(v).strip()]
         except (json.JSONDecodeError, TypeError):
             pass
 
@@ -1032,14 +1278,14 @@ class TemplateFillService:
                         result = []
                         for item in arr:
                             if isinstance(item, dict) and "values" in item and isinstance(item["values"], list):
-                                result.extend([str(v).strip() for v in item["values"] if v and str(v).strip()])
+                                result.extend([self._format_value(v).strip() for v in item["values"] if self._format_value(v).strip()])
                             elif isinstance(item, dict):
                                 result.append(str(item))
                             else:
-                                result.append(str(item))
+                                result.append(self._format_value(item))
                         if result:
                             return result
-                    return [str(v).strip() for v in arr if v and str(v).strip()]
+                    return [self._format_value(v).strip() for v in arr if self._format_value(v).strip()]
             except:
                 pass
 
@@ -1130,27 +1376,37 @@ class TemplateFillService:
                     hint_text = f"{user_hint}。{hint_text}"
 
                 # 构建针对字段提取的提示词
-                prompt = f"""你是一个专业的数据提取专家。请从以下文档内容中提取与"{field.name}"相关的所有数据。
+                prompt = f"""你是一个专业的数据提取专家。请从以下文档内容中提取与"{field.name}"完全匹配的数据。
 
-字段提示: {hint_text}
+【重要】字段名: "{field.name}"
+【重要】字段提示: {hint_text}
+
+请严格按照以下步骤操作：
+1. 在文档中搜索与"{field.name}"完全相同或高度相关的关键词
+2. 找到后，提取该关键词后的数值（注意：只要数值，不要单位）
+3. 如果是表格中的数据，直接提取该单元格的数值
+4. 如果是段落描述，在关键词附近找数值
+
+【重要】返回值规则：
+- 只返回纯数值，不要单位（如 "4.9" 而不是 "4.9万亿元"）
+- 如果原文是"4.9万亿元"，返回 "4.9"
+- 如果原文是"144000万册"，返回 "144000"
+- 如果是百分比如"增长7.7%"，返回 "7.7"
+- 如果没有找到完全匹配的数据，返回空数组
 
 文档内容：
-{doc.content[:8000] if doc.content else ""}
-
-请完成以下任务：
-1. 仔细阅读文档，找出所有与"{field.name}"相关的数据
-2. 如果文档中有表格数据，提取表格中的对应列值
-3. 如果文档中是段落描述，提取其中的关键数值或结论
-4. 返回提取的所有值（可能多个，用数组存储）
+{doc.content[:10000] if doc.content else ""}
 
 请用严格的 JSON 格式返回：
 {{
-    "values": ["值1", "值2", ...],
+    "values": ["值1", "值2", ...],  // 只填数值，不要单位
     "source": "数据来源说明",
     "confidence": 0.0到1.0之间的置信度
 }}
 
-如果没有找到相关数据，返回空数组 values: []"""
+示例：
+- 如果字段是"图书馆总藏量（万册）"且文档说"图书总藏量14.4亿册"，返回 values: ["144000"]
+- 如果字段是"国内旅游收入（亿元）"且文档说"国内旅游收入4.9万亿元"，返回 values: ["49000"]"""
 
                 messages = [
                     {"role": "system", "content": "你是一个专业的数据提取助手，擅长从政府统计公报等文档中提取数据。请严格按JSON格式输出。"},
@@ -1160,7 +1416,7 @@ class TemplateFillService:
                 response = await self.llm.chat(
                     messages=messages,
                     temperature=0.1,
-                    max_tokens=5000
+                    max_tokens=4000
                 )
 
                 content = self.llm.extract_message_content(response)

frontend/src/context/TemplateFillContext.tsx

@@ -21,6 +21,7 @@ interface TemplateFillState {
   templateFields: TemplateField[];
   sourceFiles: SourceFile[];
   sourceFilePaths: string[];
+  sourceDocIds: string[];
   templateId: string;
   filledResult: any;
   setStep: (step: Step) => void;
@@ -30,6 +31,9 @@ interface TemplateFillState {
   addSourceFiles: (files: SourceFile[]) => void;
   removeSourceFile: (index: number) => void;
   setSourceFilePaths: (paths: string[]) => void;
+  setSourceDocIds: (ids: string[]) => void;
+  addSourceDocId: (id: string) => void;
+  removeSourceDocId: (id: string) => void;
   setTemplateId: (id: string) => void;
   setFilledResult: (result: any) => void;
   reset: () => void;
@@ -41,6 +45,7 @@ const initialState = {
   templateFields: [],
   sourceFiles: [],
   sourceFilePaths: [],
+  sourceDocIds: [],
   templateId: '',
   filledResult: null,
   setStep: () => {},
@@ -50,6 +55,9 @@ const initialState = {
   addSourceFiles: () => {},
   removeSourceFile: () => {},
   setSourceFilePaths: () => {},
+  setSourceDocIds: () => {},
+  addSourceDocId: () => {},
+  removeSourceDocId: () => {},
   setTemplateId: () => {},
   setFilledResult: () => {},
   reset: () => {},
@@ -63,6 +71,7 @@ export const TemplateFillProvider: React.FC<{ children: ReactNode }> = ({ childr
   const [templateFields, setTemplateFields] = useState<TemplateField[]>([]);
   const [sourceFiles, setSourceFiles] = useState<SourceFile[]>([]);
   const [sourceFilePaths, setSourceFilePaths] = useState<string[]>([]);
+  const [sourceDocIds, setSourceDocIds] = useState<string[]>([]);
   const [templateId, setTemplateId] = useState<string>('');
   const [filledResult, setFilledResult] = useState<any>(null);
 
@@ -74,12 +83,21 @@ export const TemplateFillProvider: React.FC<{ children: ReactNode }> = ({ childr
     setSourceFiles(prev => prev.filter((_, i) => i !== index));
   };
 
+  const addSourceDocId = (id: string) => {
+    setSourceDocIds(prev => prev.includes(id) ? prev : [...prev, id]);
+  };
+
+  const removeSourceDocId = (id: string) => {
+    setSourceDocIds(prev => prev.filter(docId => docId !== id));
+  };
+
   const reset = () => {
     setStep('upload');
     setTemplateFile(null);
     setTemplateFields([]);
     setSourceFiles([]);
     setSourceFilePaths([]);
+    setSourceDocIds([]);
     setTemplateId('');
     setFilledResult(null);
   };
@@ -92,6 +110,7 @@ export const TemplateFillProvider: React.FC<{ children: ReactNode }> = ({ childr
         templateFields,
         sourceFiles,
         sourceFilePaths,
+        sourceDocIds,
         templateId,
         filledResult,
         setStep,
@@ -101,6 +120,9 @@ export const TemplateFillProvider: React.FC<{ children: ReactNode }> = ({ childr
         addSourceFiles,
         removeSourceFile,
         setSourceFilePaths,
+        setSourceDocIds,
+        addSourceDocId,
+        removeSourceDocId,
         setTemplateId,
         setFilledResult,
         reset,

frontend/src/pages/TemplateFill.tsx

@@ -60,6 +60,7 @@ const TemplateFill: React.FC = () => {
     templateFields, setTemplateFields,
     sourceFiles, setSourceFiles, addSourceFiles, removeSourceFile,
     sourceFilePaths, setSourceFilePaths,
+    sourceDocIds, setSourceDocIds, addSourceDocId, removeSourceDocId,
     templateId, setTemplateId,
     filledResult, setFilledResult,
     reset
@@ -68,6 +69,9 @@ const TemplateFill: React.FC = () => {
   const [loading, setLoading] = useState(false);
   const [previewDoc, setPreviewDoc] = useState<{ name: string; content: string } | null>(null);
   const [previewOpen, setPreviewOpen] = useState(false);
+  const [sourceMode, setSourceMode] = useState<'upload' | 'select'>('upload');
+  const [uploadedDocuments, setUploadedDocuments] = useState<DocumentItem[]>([]);
+  const [docsLoading, setDocsLoading] = useState(false);
 
   // 模板拖拽
   const onTemplateDrop = useCallback((acceptedFiles: File[]) => {
@@ -109,40 +113,118 @@ const TemplateFill: React.FC = () => {
     multiple: true
   });
 
+  // 加载已上传文档
+  const loadUploadedDocuments = useCallback(async () => {
+    setDocsLoading(true);
+    try {
+      const result = await backendApi.getDocuments(undefined, 100);
+      if (result.success) {
+        // 过滤可作为数据源的文档类型
+        const docs = (result.documents || []).filter((d: DocumentItem) =>
+          ['docx', 'md', 'txt', 'xlsx', 'xls'].includes(d.doc_type)
+        );
+        setUploadedDocuments(docs);
+      }
+    } catch (err: any) {
+      console.error('加载文档失败:', err);
+    } finally {
+      setDocsLoading(false);
+    }
+  }, []);
+
+  // 删除文档
+  const handleDeleteDocument = async (docId: string, e: React.MouseEvent) => {
+    e.stopPropagation();
+    if (!confirm('确定要删除该文档吗？')) return;
+    try {
+      const result = await backendApi.deleteDocument(docId);
+      if (result.success) {
+        setUploadedDocuments(prev => prev.filter(d => d.doc_id !== docId));
+        removeSourceDocId(docId);
+        toast.success('文档已删除');
+      } else {
+        toast.error(result.message || '删除失败');
+      }
+    } catch (err: any) {
+      toast.error('删除失败: ' + (err.message || '未知错误'));
+    }
+  };
+
+  useEffect(() => {
+    if (sourceMode === 'select') {
+      loadUploadedDocuments();
+    }
+  }, [sourceMode, loadUploadedDocuments]);
+
   const handleJointUploadAndFill = async () => {
     if (!templateFile) {
       toast.error('请先上传模板文件');
       return;
     }
 
+    // 检查是否选择了数据源
+    if (sourceMode === 'upload' && sourceFiles.length === 0) {
+      toast.error('请上传源文档或从已上传文档中选择');
+      return;
+    }
+    if (sourceMode === 'select' && sourceDocIds.length === 0) {
+      toast.error('请选择源文档');
+      return;
+    }
+
     setLoading(true);
 
     try {
-      // 使用联合上传API
-      const result = await backendApi.uploadTemplateAndSources(
-        templateFile,
-        sourceFiles.map(sf => sf.file)
-      );
+      if (sourceMode === 'select') {
+        // 使用已上传文档作为数据源
+        const result = await backendApi.uploadTemplate(templateFile);
 
-      if (result.success) {
-        setTemplateFields(result.fields || []);
-        setTemplateId(result.template_id);
-        setSourceFilePaths(result.source_file_paths || []);
-        toast.success('文档上传成功，开始智能填表');
-        setStep('filling');
+        if (result.success) {
+          setTemplateFields(result.fields || []);
+          setTemplateId(result.template_id || 'temp');
+          toast.success('开始智能填表');
+          setStep('filling');
 
-        // 自动开始填表
-        const fillResult = await backendApi.fillTemplate(
-          result.template_id,
-          result.fields || [],
-          [],  // 使用 source_file_paths 而非 source_doc_ids
-          result.source_file_paths || [],
-          '请从以下文档中提取相关信息填写表格'
+          // 使用 source_doc_ids 进行填表
+          const fillResult = await backendApi.fillTemplate(
+            result.template_id || 'temp',
+            result.fields || [],
+            sourceDocIds,
+            [],
+            '请从以下文档中提取相关信息填写表格'
+          );
+
+          setFilledResult(fillResult);
+          setStep('preview');
+          toast.success('表格填写完成');
+        }
+      } else {
+        // 使用联合上传API
+        const result = await backendApi.uploadTemplateAndSources(
+          templateFile,
+          sourceFiles.map(sf => sf.file)
         );
 
-        setFilledResult(fillResult);
-        setStep('preview');
-        toast.success('表格填写完成');
+        if (result.success) {
+          setTemplateFields(result.fields || []);
+          setTemplateId(result.template_id);
+          setSourceFilePaths(result.source_file_paths || []);
+          toast.success('文档上传成功，开始智能填表');
+          setStep('filling');
+
+          // 自动开始填表
+          const fillResult = await backendApi.fillTemplate(
+            result.template_id,
+            result.fields || [],
+            [],
+            result.source_file_paths || [],
+            '请从以下文档中提取相关信息填写表格'
+          );
+
+          setFilledResult(fillResult);
+          setStep('preview');
+          toast.success('表格填写完成');
+        }
       }
     } catch (err: any) {
       toast.error('处理失败: ' + (err.message || '未知错误'));
@@ -264,47 +346,131 @@ const TemplateFill: React.FC = () => {
                 源文档
               </CardTitle>
               <CardDescription>
-                上传包含数据的源文档（支持多选），可同时上传多个文件
+                选择包含数据的源文档作为填表依据
               </CardDescription>
+              {/* Source Mode Tabs */}
+              <div className="flex gap-2 mt-2">
+                <Button
+                  variant={sourceMode === 'upload' ? 'default' : 'outline'}
+                  size="sm"
+                  onClick={() => setSourceMode('upload')}
+                >
+                  <Upload size={14} className="mr-1" />
+                  上传文件
+                </Button>
+                <Button
+                  variant={sourceMode === 'select' ? 'default' : 'outline'}
+                  size="sm"
+                  onClick={() => setSourceMode('select')}
+                >
+                  <Files size={14} className="mr-1" />
+                  从文档中心选择
+                </Button>
+              </div>
             </CardHeader>
             <CardContent>
-              <div
-                {...getSourceProps()}
-                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 min-h-[200px]",
-                  isSourceDragActive ? "border-primary bg-primary/5" : "border-muted-foreground/20 hover:border-primary/50 hover:bg-primary/5"
-                )}
-              >
-                <input {...getSourceInputProps()} />
-                <div className="w-14 h-14 rounded-xl bg-blue-500/10 text-blue-500 flex items-center justify-center mb-4 group-hover:scale-110 transition-transform">
-                  {loading ? <Loader2 className="animate-spin" size={28} /> : <Upload size={28} />}
-                </div>
-                <p className="font-medium">
-                  {isSourceDragActive ? '释放以上传' : '点击或拖拽上传源文档'}
-                </p>
-                <p className="text-xs text-muted-foreground mt-1">
-                  支持 .xlsx .xls .docx .md .txt
-                </p>
-              </div>
-
-              {/* Selected Source Files */}
-              {sourceFiles.length > 0 && (
-                <div className="mt-4 space-y-2">
-                  {sourceFiles.map((sf, idx) => (
-                    <div key={idx} className="flex items-center gap-3 p-3 bg-muted/50 rounded-xl">
-                      {getFileIcon(sf.file.name)}
-                      <div className="flex-1 min-w-0">
-                        <p className="text-sm font-medium truncate">{sf.file.name}</p>
-                        <p className="text-xs text-muted-foreground">
-                          {(sf.file.size / 1024).toFixed(1)} KB
-                        </p>
-                      </div>
-                      <Button variant="ghost" size="sm" onClick={() => removeSourceFile(idx)}>
-                        <Trash2 size={14} className="text-red-500" />
-                      </Button>
+              {sourceMode === 'upload' ? (
+                <>
+                  <div
+                    {...getSourceProps()}
+                    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 min-h-[200px]",
+                      isSourceDragActive ? "border-primary bg-primary/5" : "border-muted-foreground/20 hover:border-primary/50 hover:bg-primary/5"
+                    )}
+                  >
+                    <input {...getSourceInputProps()} />
+                    <div className="w-14 h-14 rounded-xl bg-blue-500/10 text-blue-500 flex items-center justify-center mb-4 group-hover:scale-110 transition-transform">
+                      {loading ? <Loader2 className="animate-spin" size={28} /> : <Upload size={28} />}
                     </div>
-                  ))}
-                </div>
+                    <p className="font-medium">
+                      {isSourceDragActive ? '释放以上传' : '点击或拖拽上传源文档'}
+                    </p>
+                    <p className="text-xs text-muted-foreground mt-1">
+                      支持 .xlsx .xls .docx .md .txt
+                    </p>
+                  </div>
+
+                  {/* Selected Source Files */}
+                  {sourceFiles.length > 0 && (
+                    <div className="mt-4 space-y-2">
+                      {sourceFiles.map((sf, idx) => (
+                        <div key={idx} className="flex items-center gap-3 p-3 bg-muted/50 rounded-xl">
+                          {getFileIcon(sf.file.name)}
+                          <div className="flex-1 min-w-0">
+                            <p className="text-sm font-medium truncate">{sf.file.name}</p>
+                            <p className="text-xs text-muted-foreground">
+                              {(sf.file.size / 1024).toFixed(1)} KB
+                            </p>
+                          </div>
+                          <Button variant="ghost" size="sm" onClick={() => removeSourceFile(idx)}>
+                            <Trash2 size={14} className="text-red-500" />
+                          </Button>
+                        </div>
+                      ))}
+                    </div>
+                  )}
+                </>
+              ) : (
+                <>
+                  {/* Uploaded Documents Selection */}
+                  {docsLoading ? (
+                    <div className="space-y-2">
+                      {[1, 2, 3].map(i => (
+                        <Skeleton key={i} className="h-16 w-full rounded-xl" />
+                      ))}
+                    </div>
+                  ) : uploadedDocuments.length > 0 ? (
+                    <div className="space-y-2 max-h-[300px] overflow-y-auto">
+                      {uploadedDocuments.map((doc) => (
+                        <div
+                          key={doc.doc_id}
+                          className={cn(
+                            "flex items-center gap-3 p-3 rounded-xl border-2 transition-all cursor-pointer",
+                            sourceDocIds.includes(doc.doc_id)
+                              ? "border-primary bg-primary/5"
+                              : "border-border hover:bg-muted/30"
+                          )}
+                          onClick={() => {
+                            if (sourceDocIds.includes(doc.doc_id)) {
+                              removeSourceDocId(doc.doc_id);
+                            } else {
+                              addSourceDocId(doc.doc_id);
+                            }
+                          }}
+                        >
+                          <div className={cn(
+                            "w-6 h-6 rounded-md border-2 flex items-center justify-center transition-all shrink-0",
+                            sourceDocIds.includes(doc.doc_id)
+                              ? "border-primary bg-primary text-white"
+                              : "border-muted-foreground/30"
+                          )}>
+                            {sourceDocIds.includes(doc.doc_id) && <CheckCircle2 size={14} />}
+                          </div>
+                          {getFileIcon(doc.original_filename)}
+                          <div className="flex-1 min-w-0">
+                            <p className="text-sm font-medium truncate">{doc.original_filename}</p>
+                            <p className="text-xs text-muted-foreground">
+                              {doc.doc_type.toUpperCase()} • {format(new Date(doc.created_at), 'yyyy-MM-dd')}
+                            </p>
+                          </div>
+                          <Button
+                            variant="ghost"
+                            size="sm"
+                            onClick={(e) => handleDeleteDocument(doc.doc_id, e)}
+                            className="shrink-0"
+                          >
+                            <Trash2 size={14} className="text-red-500" />
+                          </Button>
+                        </div>
+                      ))}
+                    </div>
+                  ) : (
+                    <div className="text-center py-8 text-muted-foreground">
+                      <Files size={32} className="mx-auto mb-2 opacity-30" />
+                      <p className="text-sm">暂无可用的已上传文档</p>
+                    </div>
+                  )}
+                </>
               )}
             </CardContent>
           </Card>