219 lines
7.8 KiB
Python
219 lines
7.8 KiB
Python
#!/usr/bin/env python3
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"""
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检查数据库files表和实际文件存储情况
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"""
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import mysql.connector
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import os
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import hashlib
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def check_database_files():
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"""检查数据库中的文件记录"""
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try:
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# 连接数据库
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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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# 查询files表中的所有记录
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cursor.execute("""
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SELECT id, user_id, original_filename, filename, file_path, file_size,
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file_hash, mime_type, created_at
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FROM files
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ORDER BY created_at DESC
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""")
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files = cursor.fetchall()
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print("=== 数据库 files 表中的记录 ===")
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if files:
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for file in files:
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(id, user_id, original_filename, filename, file_path,
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file_size, file_hash, mime_type, created_at) = file
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print(f"ID: {id}")
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print(f" 用户ID: {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" 文件哈希: {file_hash}")
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print(f" MIME类型: {mime_type}")
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print(f" 创建时间: {created_at}")
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print("-" * 50)
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else:
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print("files 表中没有记录")
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print(f"\n总记录数: {len(files)}")
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# 检查每个文件是否真实存在
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print("\n=== 文件存在性检查 ===")
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existing_count = 0
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missing_files = []
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for file in files:
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(id, user_id, original_filename, filename, file_path,
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file_size, file_hash, mime_type, created_at) = file
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full_path = os.path.join("uploads", filename)
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if os.path.exists(full_path):
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existing_count += 1
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print(f"✅ ID {id}: {original_filename} - 文件存在")
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# 检查文件大小
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actual_size = os.path.getsize(full_path)
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if actual_size != file_size:
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print(f" ⚠️ 文件大小不匹配! 数据库: {file_size}, 实际: {actual_size}")
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# 检查文件哈希
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try:
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with open(full_path, 'rb') as f:
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content = f.read()
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actual_hash = hashlib.sha256(content).hexdigest()
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if actual_hash != file_hash:
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print(f" ❌ 文件哈希不匹配! 数据库: {file_hash}")
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print(f" 实际: {actual_hash}")
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except Exception as e:
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print(f" ❌ 无法读取文件或计算哈希: {e}")
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else:
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missing_files.append((id, original_filename, filename))
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print(f"❌ ID {id}: {original_filename} - 文件不存在!")
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print(f"\n实际存在的文件: {existing_count}")
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print(f"缺失的文件: {len(missing_files)}")
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if missing_files:
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print("\n缺失文件详情:")
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for (id, original_filename, filename) in missing_files:
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print(f" ID {id}: {original_filename} (应存储为: {filename})")
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except Exception as e:
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print(f"数据库查询出错: {e}")
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finally:
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if 'conn' in locals() and conn.is_connected():
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cursor.close()
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conn.close()
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def check_uploads_directory():
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"""检查uploads目录中的实际文件"""
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print("\n=== uploads 目录中的实际文件 ===")
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uploads_dir = "uploads"
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if os.path.exists(uploads_dir):
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files = os.listdir(uploads_dir)
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if files:
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print(f"目录: {uploads_dir}")
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print(f"文件数量: {len(files)}")
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for file in files:
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file_path = os.path.join(uploads_dir, file)
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file_size = os.path.getsize(file_path)
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# 计算文件哈希
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try:
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with open(file_path, 'rb') as f:
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content = f.read()
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file_hash = hashlib.sha256(content).hexdigest()
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# 尝试读取文本内容
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try:
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with open(file_path, 'r', encoding='utf-8') as f:
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text_content = f.read()
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content_preview = text_content[:100] + "..." if len(text_content) > 100 else text_content
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content_preview = repr(content_preview) # 显示引号和特殊字符
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except:
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content_preview = "(二进制文件)"
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except Exception as e:
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file_hash = f"无法计算哈希: {e}"
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content_preview = f"无法读取: {e}"
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print(f"\n📄 {file}")
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print(f" 大小: {file_size} bytes")
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print(f" 哈希: {file_hash}")
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print(f" 内容预览: {content_preview}")
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else:
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print(f"目录 {uploads_dir} 为空")
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else:
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print(f"目录 {uploads_dir} 不存在")
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def check_file_integrity():
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"""检查文件完整性，对比数据库和实际文件"""
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print("\n=== 文件完整性检查 ===")
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try:
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# 连接数据库
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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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# 查询所有文件
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cursor.execute("SELECT id, filename, file_hash, file_size FROM files")
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db_files = cursor.fetchall()
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integrity_issues = []
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for (id, filename, expected_hash, expected_size) in db_files:
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full_path = os.path.join("uploads", filename)
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if os.path.exists(full_path):
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# 检查大小
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actual_size = os.path.getsize(full_path)
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if actual_size != expected_size:
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integrity_issues.append(f"ID {id}: 文件大小不匹配 (期望: {expected_size}, 实际: {actual_size})")
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continue
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# 检查哈希
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try:
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with open(full_path, 'rb') as f:
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content = f.read()
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actual_hash = hashlib.sha256(content).hexdigest()
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if actual_hash != expected_hash:
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integrity_issues.append(f"ID {id}: 文件哈希不匹配")
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print(f" 期望哈希: {expected_hash}")
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print(f" 实际哈希: {actual_hash}")
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except Exception as e:
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integrity_issues.append(f"ID {id}: 无法计算文件哈希 - {e}")
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else:
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integrity_issues.append(f"ID {id}: 文件不存在")
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if integrity_issues:
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print(f"❌ 发现 {len(integrity_issues)} 个完整性问题:")
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for issue in integrity_issues:
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print(f" - {issue}")
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else:
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print("✅ 所有文件完整性检查通过!")
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except Exception as e:
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print(f"完整性检查出错: {e}")
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finally:
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if 'conn' in locals() and conn.is_connected():
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cursor.close()
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conn.close()
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if __name__ == "__main__":
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check_database_files()
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check_uploads_directory()
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check_file_integrity()
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print("\n=== 总结 ===")
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print("文件存储情况:")
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print("1. 数据库存储文件的元数据信息")
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print("2. 实际文件存储在 backend/uploads/ 目录")
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print("3. 文件名使用UUID格式确保唯一性")
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print("4. 通过file_hash确保文件完整性")
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print("5. 支持文件去重功能") |