初次提交

backend/test_db_connection.py

@@ -0,0 +1,57 @@
+import pymysql
+from app.core.config import settings
+
+def test_mysql_connection():
+    try:
+        print(f"正在连接数据库: {settings.DATABASE_URL}")
+
+        # 解析连接字符串
+        import re
+        pattern = r'mysql\+pymysql://([^:]+):([^@]+)@([^:]+):(\d+)/(.+)'
+        match = re.match(pattern, settings.DATABASE_URL)
+
+        if match:
+            username, password, host, port, database = match.groups()
+            print(f"主机: {host}")
+            print(f"端口: {port}")
+            print(f"用户: {username}")
+            print(f"数据库: {database}")
+
+            # 尝试连接
+            connection = pymysql.connect(
+                host=host,
+                port=int(port),
+                user=username,
+                password=password,
+                database=database,
+                charset='utf8mb4'
+            )
+
+            print("MySQL数据库连接成功!")
+
+            # 测试查询
+            with connection.cursor() as cursor:
+                cursor.execute("SELECT VERSION()")
+                version = cursor.fetchone()
+                print(f"MySQL版本: {version[0]}")
+
+                cursor.execute("SHOW TABLES")
+                tables = cursor.fetchall()
+                print(f"现有表数量: {len(tables)}")
+                for table in tables:
+                    print(f"- {table[0]}")
+
+            connection.close()
+            return True
+
+        else:
+            print("连接字符串格式错误")
+            return False
+
+    except Exception as e:
+        print(f"数据库连接失败: {str(e)}")
+        print(f"错误类型: {type(e).__name__}")
+        return False
+
+if __name__ == "__main__":
+    test_mysql_connection()