150 lines
4.8 KiB
Python
150 lines
4.8 KiB
Python
#!/usr/bin/env python3
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"""
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详细调试下载接口的每个步骤
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"""
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import requests
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import os
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import mysql.connector
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def debug_download_step_by_step():
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"""逐步调试下载过程"""
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print("=== 详细下载接口调试 ===")
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# 测试参数
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user_id = 3
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file_id = 22
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print(f"测试参数: user_id={user_id}, file_id={file_id}")
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# 步骤1: 检查数据库中的文件记录
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print("\n--- 步骤1: 检查数据库记录 ---")
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try:
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conn = mysql.connector.connect(
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host='101.126.85.76',
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user='mytest_db',
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password='mytest_db',
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database='mytest_db'
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)
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cursor = conn.cursor()
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cursor.execute('''
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SELECT id, user_id, original_filename, filename, file_path, file_size, mime_type
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FROM files
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WHERE id = %s AND user_id = %s
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''', (file_id, user_id))
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file_record = cursor.fetchone()
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if file_record:
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id, db_user_id, original_filename, filename, file_path, file_size, mime_type = file_record
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print(f"✅ 数据库记录找到:")
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print(f" 文件ID: {id}")
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print(f" 用户ID: {db_user_id}")
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print(f" 原始文件名: {original_filename}")
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print(f" 存储文件名: {filename}")
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print(f" 文件路径: {file_path}")
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print(f" 文件大小: {file_size} bytes")
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print(f" MIME类型: {mime_type}")
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else:
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print("❌ 数据库中没有找到匹配的记录")
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return
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cursor.close()
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conn.close()
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except Exception as e:
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print(f"❌ 数据库查询失败: {e}")
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return
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# 步骤2: 检查实际文件是否存在
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print("\n--- 步骤2: 检查实际文件 ---")
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if os.path.exists(file_path):
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actual_size = os.path.getsize(file_path)
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print(f"✅ 文件存在:")
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print(f" 路径: {os.path.abspath(file_path)}")
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print(f" 实际大小: {actual_size} bytes")
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if actual_size == file_size:
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print("✅ 文件大小匹配数据库记录")
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else:
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print(f"⚠️ 文件大小不匹配: 数据库{file_size} vs 实际{actual_size}")
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# 检查文件可读性
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if os.access(file_path, os.R_OK):
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print("✅ 文件可读")
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# 读取文件内容验证
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try:
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with open(file_path, 'r', encoding='utf-8') as f:
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content = f.read()
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print(f"✅ 文件内容可读，长度: {len(content)} 字符")
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print(f" 内容预览: {content[:50]}...")
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except Exception as e:
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print(f"❌ 读取文件内容失败: {e}")
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else:
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print("❌ 文件不可读 - 权限问题")
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else:
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print(f"❌ 文件不存在: {file_path}")
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return
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# 步骤3: 测试API下载请求
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print("\n--- 步骤3: 测试API下载请求 ---")
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try:
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download_data = {'user_id': user_id, 'file_id': file_id}
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print(f"发送请求: POST /api/v1/files/download")
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print(f"请求体: {download_data}")
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response = requests.post(
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'http://localhost:8000/api/v1/files/download',
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json=download_data,
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timeout=10
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)
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print(f"响应状态码: {response.status_code}")
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print(f"响应头: {dict(response.headers)}")
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if response.status_code == 200:
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print("✅ 下载成功!")
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content_type = response.headers.get('content-type', '')
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content_length = len(response.content)
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print(f" 响应类型: {content_type}")
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print(f" 内容长度: {content_length} bytes")
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if content_type.startswith('text/'):
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text_content = response.text
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print(f" 文本内容长度: {len(text_content)} 字符")
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print(f" 文本内容预览: {text_content[:50]}...")
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# 验证内容
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if len(text_content) == file_size / 2: # 大约UTF-8字符数
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print("✅ 内容大小预期范围内")
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else:
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print(f"⚠️ 内容大小异常: 预期~{file_size//2}字符，实际{len(text_content)}字符")
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else:
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print(" 二进制内容，无法显示预览")
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else:
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print("❌ 下载失败!")
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print(f"错误响应: {response.text}")
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# 尝试解析JSON错误
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try:
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error_data = response.json()
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print(f"错误详情: {error_data}")
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except:
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print("无法解析错误响应")
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except Exception as e:
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print(f"❌ API请求失败: {e}")
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import traceback
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traceback.print_exc()
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if __name__ == "__main__":
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debug_download_step_by_step() |