Question

我将我的应用程序部署到 Heroku，它向我显示了一个关于“items”的“keyError”。我的代码在本地运行得很好，但不能在 Heroku 上运行。有人知道我该如何解决吗？非常感谢！

我的代码：

def getbooktitle():
    if request.method == "POST":
        file = request.files['image']
        img = Image.open(file.stream)
        booktitle = pytesseract.image_to_string(img)

        api_key = "myapikey"
        url = f"https://www.googleapis.com/books/v1/volumes?q={booktitle}&key={api_key}"
        response = requests.get(url)
        json_response = response.json()
        volume_info = json_response['items'][0]['volumeInfo']
        title = volume_info.get('title')
        author = volume_info.get('authors')
        imageslink = volume_info['imageLinks']
        smallimage = imageslink['smallThumbnail']
        return jsonify({"books": [{'title': title, 'author': author[0], 'imageLink': smallimage}]})

查看日志：

2021-07-20T15:50:16.826905+00:00 app[web.1]: [2021-07-20 15:50:16,823] ERROR in app: Exception on /getbook [POST]
2021-07-20T15:50:16.826914+00:00 app[web.1]: Traceback (most recent call last):
2021-07-20T15:50:16.826915+00:00 app[web.1]:   File "/app/.heroku/python/lib/python3.9/site-packages/flask/app.py", line 2070, in wsgi_app
2021-07-20T15:50:16.826915+00:00 app[web.1]:     response = self.full_dispatch_request()
2021-07-20T15:50:16.826917+00:00 app[web.1]:   File "/app/.heroku/python/lib/python3.9/site-packages/flask/app.py", line 1515, in full_dispatch_request
2021-07-20T15:50:16.826917+00:00 app[web.1]:     rv = self.handle_user_exception(e)
2021-07-20T15:50:16.826918+00:00 app[web.1]:   File "/app/.heroku/python/lib/python3.9/site-packages/flask/app.py", line 1513, in full_dispatch_request
2021-07-20T15:50:16.826918+00:00 app[web.1]:     rv = self.dispatch_request()
2021-07-20T15:50:16.826919+00:00 app[web.1]:   File "/app/.heroku/python/lib/python3.9/site-packages/flask/app.py", line 1499, in dispatch_request
2021-07-20T15:50:16.826919+00:00 app[web.1]:     return self.ensure_sync(self.view_functions[rule.endpoint])(**req.view_args)
2021-07-20T15:50:16.826920+00:00 app[web.1]:   File "/app/app.py", line 21, in getbooktitle
2021-07-20T15:50:16.826921+00:00 app[web.1]:     volume_info = json_response["items"][0]["volumeInfo"]
2021-07-20T15:50:16.826922+00:00 app[web.1]: KeyError: 'items'

将 Flask 应用程序部署到 heroku 时出现关键错误

0 个答案: