将文件上载到Google云时出现Python 3问题

我有一个Android应用程序，可以通过HTTP请求发送视频文件。然而，当我尝试发送文件时，谷歌云会给出一个错误。我正在使用Python3

最后一行blob.upload_from_filename（filename）中有一个问题，我想知道如何解决这个问题

代码如下：

import os
from google.cloud import storage
from flask import Flask, flash, request, redirect, url_for
from werkzeug.utils import secure_filename
bucket_name = 'Censored.appspot.com'
ALLOWED_EXTENSIONS = set(['txt', 'pdf', 'png', 'jpg', 'jpeg', 'gif', 'mp4'])

app = Flask(__name__)
app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER
app.config['SECRET_KEY'] = "TESTSTRING"

def allowed_file(filename):
    return '.' in filename and \
           filename.rsplit('.', 1)[1].lower() in ALLOWED_EXTENSIONS

@app.route('/', methods=['GET', 'POST'])
def upload_file():
    if request.method == 'POST':
        if 'file' not in request.files:
            flash('No file part')
            return redirect(request.url)
        file = request.files['file']
        if file.filename == '':
            flash('No selected file')
            return redirect(request.url)
        if file and allowed_file(file.filename):
            filename = secure_filename(file.filename)
            filepath = '/{}/{}'.format(bucket_name, filename)
            storage_client = storage.Client()
            bucket = storage_client.get_bucket(bucket_name)
            blob = storage.Blob(filename, bucket)
            blob.upload_from_filename(filename)
    return "Hello World!"

以下是上传时出现的错误：

  Traceback (most recent call last):


File "", line 1
        Traceback (most recent call last): 
File "/env/lib/python3.6/site-packages/flask/app.py", 
line 2292, in wsgi_app response = self.full_dispatch_request() 
File "/env/lib/python3.6/site-packages/flask/app.py", 
line 1815, in full_dispatch_request rv = self.handle_user_exception(e) 
File "/env/lib/python3.6/site-packages/flask/app.py", 
line 1718, in handle_user_exception reraise(exc_type, exc_value, tb) 
File "/env/lib/python3.6/site-packages/flask/_compat.py", 
line 35, in reraise raise value File "/env/lib/python3.6/site-packages/flask/app.py", 
line 1813, in full_dispatch_request rv = self.dispatch_request() 
File "/env/lib/python3.6/site-packages/flask/app.py", 
line 1799, in dispatch_request return self.view_functions[rule.endpoint](**req.view_args) 
File "/home/vmagent/app/__init__.py", 
line 32, in upload_file blob.upload_from_filename(filename) 
File "/env/lib/python3.6/site-packages/google/cloud/storage/blob.py", 
line 1021, in upload_from_filename with open(filename, 'rb') as file_obj: 
FileNotFoundError: [Errno 2] No such file or directory: '377bdc67c74336b6_101.mp4'
                             ^
    SyntaxError: invalid syntax

作为旁注；在本地Flask服务器中，我使用：

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

这当然不适用于谷歌云，因为它使用bucket

---

我在这里越来越绝望了。我想，我遗漏了一些关于谷歌云的常识。

您遗漏了实际保存文件的步骤：

filename=secure\u文件名（file.filename）
filepath=os.path.join（app.config['UPLOAD\u FOLDER']，文件名）
file.save（文件路径）

对于Google App Engine，上载文件夹必须是

/tmp

保存文件后，您可以将其上载到Google云存储：

name = '/{}/{}'.format(bucket_name, filename)
storage_client = storage.Client()
bucket = storage_client.get_bucket(bucket_name)
blob = storage.Blob(name, bucket)
blob.upload_from_filename(filepath)

我认为这句话：

blob = storage.Blob(name, bucket)

应该是

blob = storage.Blob(filename, bucket)

---

至少对我来说是这样的。否则，它将以与bucket同名的文件夹嵌套在bucket中。

不确定您是否意识到这一点，但filenotfound错误似乎表示找不到要上载的文件。看起来您正在指定一个“相对”文件路径，这意味着它正在应用程序的工作目录中查找该文件。您需要添加一些日志来确定应用程序正在查看的位置，然后将其与上载文件file.save（filepath）file“/env/lib/python3.6/site packages/werkzeug/datastructures.py”中的文件实际位置进行比较。第42行，在save dst=open（dst，'wb'）FileNotFoundError:[Errno 2]没有这样的文件或目录：'/home/kristian_whl/files/377bdc67c74336b6_108.mp4'我从file.save（filepath）行得到这个错误。我想我需要使用Google Clouds Bucket。如果您在本地运行此程序，则需要将

app.config['UPLOAD\u FOLDER']

设置到计算机上存在的目录。目录

/home/kristian\u whl/files/

似乎不存在。我没有将“/tmp”添加到UPLOAD\u文件夹。非常感谢，你帮了我大忙！