flask mongodb文件的上传 上传文件 文件名重复的删掉 前后端代码

前端代码：

<form method="POST" enctype="multipart/form-data">
  <input type="file" name="file">
  <input type="submit" value="Upload">
</form>

后端代码：

from flask import Flask, request
from pymongo import MongoClient
import os

app = Flask(__name__)

# 连接MongoDB
client = MongoClient('localhost', 27017)
db = client['test']
collection = db['files']

# 上传文件
@app.route('/upload', methods=['POST'])
def upload_file():
    file = request.files['file']
    # 判断文件名是否重复
    if collection.find_one({'name': file.filename}):
        return 'File already exists!'
    else:
        # 保存文件
        file.save(os.path.join(app.config['UPLOAD_FOLDER'], file.filename))
        # 将文件信息存入MongoDB
        collection.insert_one({'name': file.filename,
                               'path': os.path.join(app.config['UPLOAD_FOLDER'], file.filename)})
        return 'File uploaded successfully!'

if __name__ == '__main__':
    app.config['UPLOAD_FOLDER'] = '/path/to/upload/folder'
    app.run()

注意：需要安装pymongo模块。