168 lines
5.7 KiB
Python
168 lines
5.7 KiB
Python
#!/usr/bin/env python3
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"""
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简化版文件存储检查脚本
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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_files_storage():
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"""检查文件存储情况"""
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print("=== 文件存储情况检查 ===")
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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("""
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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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db_files = cursor.fetchall()
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print(f"数据库中的文件记录数: {len(db_files)}")
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print()
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print("=== 数据库中的文件记录 ===")
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for file in db_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" 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" 文件大小: {file_size} bytes")
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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("-" * 40)
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# 检查实际文件存在情况
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print("\n=== 文件存在性检查 ===")
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existing_count = 0
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for file in db_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"[存在] ID {id}: {original_filename}")
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else:
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print(f"[缺失] ID {id}: {original_filename}")
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print(f"\n实际存在的文件数: {existing_count}")
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print(f"缺失的文件数: {len(db_files) - existing_count}")
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# 检查uploads目录详情
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print("\n=== uploads目录详情 ===")
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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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print(f"uploads目录中的文件数: {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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print(f"文件: {file}, 大小: {file_size} bytes")
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else:
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print("uploads目录不存在")
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except Exception as e:
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print(f"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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def check_file_integrity():
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"""检查文件完整性"""
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print("\n=== 文件完整性检查 ===")
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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("SELECT id, filename, file_hash, file_size FROM files")
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db_files = cursor.fetchall()
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integrity_ok = True
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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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actual_size = os.path.getsize(full_path)
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if actual_size != expected_size:
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print(f"ID {id}: 文件大小不匹配 (期望: {expected_size}, 实际: {actual_size})")
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integrity_ok = False
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continue
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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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print(f"ID {id}: 文件哈希不匹配")
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print(f" 期望: {expected_hash}")
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print(f" 实际: {actual_hash}")
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integrity_ok = False
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else:
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print(f"ID {id}: 完整性检查通过")
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except Exception as e:
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print(f"ID {id}: 无法计算哈希 - {e}")
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integrity_ok = False
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else:
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print(f"ID {id}: 文件不存在")
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integrity_ok = False
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if integrity_ok:
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print("所有文件完整性检查通过!")
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else:
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print("发现文件完整性问题!")
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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_files_storage()
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check_file_integrity()
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print("\n=== 文件存储架构总结 ===")
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print("1. 数据库(files表): 存储文件元数据")
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print(" - 文件ID、用户ID、原始文件名")
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print(" - 存储文件名(UUID格式)")
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print(" - 文件大小、MIME类型")
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print(" - SHA-256哈希值")
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print(" - 创建时间等")
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print()
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print("2. 文件系统(uploads目录): 存储实际文件")
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print(" - 文件使用UUID命名确保唯一性")
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print(" - 文件内容与数据库记录一一对应")
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print(" - 通过file_hash验证完整性")
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print()
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print("3. 回答您的问题:")
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print(" 是的，数据库中存储的是文件元数据，")
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print(" 实际文件内容存储在服务器的uploads目录中。")
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print(" 两者通过file_hash保持关联和完整性验证。") |