@moudule.route('/upload', methods=['GET',  'POST'])

def upload_file():

    global _flask_app

    if request.method == 'POST':

        file = request.files['file']

        if file and allowed_file(file.filename):

            filename = secure_filename(file.filename)

            file.save(os.path.join(_flask_app.config['UPLOAD_FOLDER'], filename))

            return json.dumps({'info': '上传完成'})

        else:

            return json.dumps({'info': '文件不存在或者不合法'})

    else:

        return json.dumps({'info': '方法不支持'})