處理[Errno 111]連接被燒瓶中的請求拒絕返回

我有用java開發的後端，它可以進行各種處理。我的前端是使用python的瓶頸框架開發的。我正在使用requests發送請求並獲得java中apis的響應。處理[Errno 111]連接被燒瓶中的請求拒絕返回

以下是我的代碼確實該行：

req = requests.post(buildApiUrl.getUrl('user') + "/login", data=payload)

我的問題是，有時，當Tomcat實例未運行或存在某些問題的Java API，我總是從請求錯誤如下：

ERROR:root:HTTPConnectionPool(host='localhost', port=8080): Max retries exceeded with url: /MYAPP/V1.0/user/login (Caused by <class 'socket.error'>: [Errno 111] Connection refused) 
Traceback (most recent call last): 
    File "/home/rahul/git/myapp/webapp/views/utils.py", line 31, in decorated_view 
    return_value = func(*args, **kwargs) 
    File "/home/rahul/git/myapp/webapp/views/public.py", line 37, in login 
    req = requests.post(buildApiUrl.getUrl('user') + "/login", data=payload) 
    File "/home/rahul/git/myapp/venv/local/lib/python2.7/site-packages/requests/api.py", line 88, in post 
    return request('post', url, data=data, **kwargs) 
    File "/home/rahul/git/myapp/venv/local/lib/python2.7/site-packages/requests/api.py", line 44, in request 
    return session.request(method=method, url=url, **kwargs) 
    File "/home/rahul/git/myapp/venv/local/lib/python2.7/site-packages/requests/sessions.py", line 335, in request 
    resp = self.send(prep, **send_kwargs) 
    File "/home/rahul/git/myapp/venv/local/lib/python2.7/site-packages/requests/sessions.py", line 438, in send 
    r = adapter.send(request, **kwargs) 
    File "/home/rahul/git/myapp/venv/local/lib/python2.7/site-packages/requests/adapters.py", line 327, in send 
    raise ConnectionError(e) 
ConnectionError: HTTPConnectionPool(host='localhost', port=8080): Max retries exceeded with url: /MYAPP/V1.0/user/login (Caused by <class 'socket.error'>: [Errno 111] Connection refused)

我要處理，我接受我的燒瓶應用程序錯誤等情況，這樣我可以給網頁，而不是顯示空白屏幕上進行必要的迴應。那麼我怎麼能做到這一點？異常request.post提出使用try-except

來源

2013-08-21 srahul07

陷阱：

try: 
    req = requests.post(buildApiUrl.getUrl('user') + "/login", data=payload) 
except requests.exceptions.RequestException: 
    # Handle exception ..

來源

2013-08-21 09:39:05 falsetru

感謝。在想同樣的事情，但想確認。 – srahul07

處理[Errno 111]連接被燒瓶中的請求拒絕返回

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