Question

我正在尝试通过Google App Engine将大型视频上传到Google Cloud Storage。

我遵循了这篇文章中的原则，即上传大型电子表格。 Can't upload large files to Python + Flask in GCP App Engine

我已经使用dropzone.js设置了分块

我已经在main.py中设置了一个上传文件，希望将文件块上传到应用程序的tmp目录中，并添加了将所有文件都放置到位后将完整文件移至Google Cloud Storage中的逻辑。

我收到以下错误消息：

TypeError：write（）参数必须为str，而不是字节

这是我的后端代码


    from flask import Flask, render_template, request, redirect, url_for
    from google.cloud import storage
    from flask_dropzone import Dropzone
    from werkzeug.utils import secure_filename
    import os
    import base64


    app = Flask(__name__, template_folder='./templates', static_folder="./static")
    dropzone = Dropzone(app)
    app.config['UPLOAD_PATH'] = '/tmp'

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

    def index():
        return render_template('index.html')


    @app.route('/upload', methods=['POST', 'GET'])
    def upload():

        if request.method == 'POST':

        upload_file = request.files.get('file')

        tmp_file_path = '/tmp/' + upload_file.filename

        with open(tmp_file_path, 'a') as f:
            f.write(uploaded_file.read())

        chunk_index = int(flask.request.form.get('dzchunkindex')) if 
(flask.request.form.get('dzchunkindex') is not None)  else 0
    
        chunk_count = int(flask.request.form.get('dztotalchunkcount')) if (flask.request.form.get('dztotalchunkcount') is not None)  else 1


        if (chunk_index == (chunk_count - 1)):
            print('Saving file to storage')
            print( chunk_count )

            storage_client = storage.Client()

            storage_bucket = storage_client.get_bucket('percy-277618.appspot.com')

            blob = storage_bucket.blob(upload_file.filename)

            blob.upload_from_filename(tmp_file_path, client=storage_client)
            print('Saved to Storage')

            print('Deleting temp file')
            os.remove(tmp_file_path)

                  

if __name__ == '__main__':

    app.run(host='127.0.0.1', port=8080, debug=True)

这是我的前端代码。






Dropzone.options.uploadwidget = {

       paramName: 'file',
       forceChunking: true,
       timeout: 300000,
       chunking: true,
       url: '/upload',
       chunkSize: 10485760,
       maxFilesize: 1025,

};

Answer 1

使用uploaded_file.read()产生字节，而不是字符串。您应该在binary mode中打开文件：

with open(tmp_file_path, 'ab') as f:

将大型视频文件上传到Google App Engine

1 个答案: