如何上传jpg文件并保存到restplas flask api中？

from flask import Flask, request
import os

app = Flask(__name__)

@app.route('/upload', methods=['POST'])
def upload():
    # 获取上传的文件
    file = request.files['file']
    
    # 验证文件类型
    if file and file.filename.endswith('.jpg'):
        # 文件保存路径
        save_path = os.path.join('uploads', file.filename)
        
        # 保存文件
        file.save(save_path)
        
        # 将保存后的文件路径保存到数据库中或其他存储方式
        
        return 'File uploaded successfully.'
    else:
        return 'Invalid file type.'

if __name__ == '__main__':
    app.run()