前后端基本架构和完全excel表的解析及统计图表的生成以及excel表的到出

backend/app/core/document_parser/base.py

@@ -0,0 +1,87 @@
+"""
+解析器基类 - 定义所有解析器的通用接口
+"""
+from abc import ABC, abstractmethod
+from typing import Any, Dict, List, Optional
+from pathlib import Path
+
+
+class ParseResult:
+    """解析结果类"""
+
+    def __init__(
+        self,
+        success: bool,
+        data: Optional[Dict[str, Any]] = None,
+        error: Optional[str] = None,
+        metadata: Optional[Dict[str, Any]] = None
+    ):
+        self.success = success
+        self.data = data or {}
+        self.error = error
+        self.metadata = metadata or {}
+
+    def to_dict(self) -> Dict[str, Any]:
+        """转换为字典"""
+        return {
+            "success": self.success,
+            "data": self.data,
+            "error": self.error,
+            "metadata": self.metadata
+        }
+
+
+class BaseParser(ABC):
+    """文档解析器基类"""
+
+    def __init__(self):
+        self.supported_extensions: List[str] = []
+        self.parser_name: str = "base_parser"
+
+    @abstractmethod
+    def parse(self, file_path: str, **kwargs) -> ParseResult:
+        """
+        解析文件
+
+        Args:
+            file_path: 文件路径
+            **kwargs: 其他解析参数
+
+        Returns:
+            ParseResult: 解析结果
+        """
+        pass
+
+    def can_parse(self, file_path: str) -> bool:
+        """
+        检查是否可以解析该文件
+
+        Args:
+            file_path: 文件路径
+
+        Returns:
+            bool: 是否可以解析
+        """
+        ext = Path(file_path).suffix.lower()
+        return ext in self.supported_extensions
+
+    def get_file_info(self, file_path: str) -> Dict[str, Any]:
+        """
+        获取文件基本信息
+
+        Args:
+            file_path: 文件路径
+
+        Returns:
+            Dict[str, Any]: 文件信息
+        """
+        path = Path(file_path)
+        if not path.exists():
+            return {"error": "File not found"}
+
+        return {
+            "filename": path.name,
+            "extension": path.suffix.lower(),
+            "size": path.stat().st_size,
+            "parser": self.parser_name
+        }