xxx

db_viewer.py

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+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+import sqlite3
+import sys
+import os
+
+def print_separator(char='-', length=80):
+    """打印分隔线"""
+    print(char * length)
+
+def show_database_info(db_path):
+    """显示数据库信息"""
+    if not os.path.exists(db_path):
+        print(f"错误：数据库文件 '{db_path}' 不存在")
+        return
+
+    try:
+        # 连接到数据库
+        conn = sqlite3.connect(db_path)
+        cursor = conn.cursor()
+        
+        # 获取所有表名
+        cursor.execute("SELECT name FROM sqlite_master WHERE type='table';")
+        tables = cursor.fetchall()
+        
+        if not tables:
+            print("数据库中没有表")
+            conn.close()
+            return
+        
+        print(f"在数据库 '{db_path}' 中找到 {len(tables)} 个表:")
+        print_separator()
+        
+        # 显示每个表的结构和数据
+        for table in tables:
+            table_name = table[0]
+            print(f"\n表名: {table_name}")
+            print_separator()
+            
+            # 获取表结构
+            cursor.execute(f"PRAGMA table_info({table_name});")
+            columns = cursor.fetchall()
+            
+            # 打印列名
+            col_names = [col[1] for col in columns]
+            col_types = [col[2] for col in columns]
+            print("表结构:")
+            for i, (name, type_) in enumerate(zip(col_names, col_types)):
+                print(f"  {i+1}. {name} ({type_})")
+            
+            # 获取记录数
+            cursor.execute(f"SELECT COUNT(*) FROM {table_name};")
+            count = cursor.fetchone()[0]
+            print(f"\n记录数: {count}")
+            
+            # 获取表数据 (最多显示10条)
+            if count > 0:
+                cursor.execute(f"SELECT * FROM {table_name} LIMIT 10;")
+                rows = cursor.fetchall()
+                
+                print("\n数据预览 (最多10条):")
+                print_separator()
+                
+                # 打印列名
+                for col in col_names:
+                    print(f"{col:15}", end="")
+                print("\n" + "-" * (15 * len(col_names)))
+                
+                # 打印数据
+                for row in rows:
+                    for item in row:
+                        # 对值进行截断，防止过长的数据破坏格式
+                        item_str = str(item)
+                        if len(item_str) > 13:
+                            item_str = item_str[:10] + "..."
+                        print(f"{item_str:15}", end="")
+                    print()
+                
+                if count > 10:
+                    print(f"...（还有 {count-10} 条记录）")
+            
+            print_separator("=")
+        
+        conn.close()
+        print("\n查询完成！")
+        
+    except sqlite3.Error as e:
+        print(f"SQLite 错误: {e}")
+    except Exception as e:
+        print(f"发生错误: {e}")
+
+def show_usage():
+    """显示使用帮助"""
+    print(f"使用方法: python {os.path.basename(__file__)} <数据库文件路径>")
+    print("示例: python db_viewer.py C:\\path\\to\\your\\database.db")
+
+if __name__ == "__main__":
+    if len(sys.argv) != 2:
+        show_usage()
+    else:
+        db_path = sys.argv[1]
+        show_database_info(db_path)