扭曲的文檔提供了一個如何做到這一點的例子。
從http://twistedmatrix.com/documents/current/web/howto/client.html
from pprint import pformat
from twisted.internet import reactor
from twisted.internet.defer import Deferred
from twisted.internet.protocol import Protocol
from twisted.web.client import Agent
from twisted.web.http_headers import Headers
class BeginningPrinter(Protocol):
def __init__(self, finished):
self.finished = finished
self.remaining = 1024 * 10
def dataReceived(self, bytes):
if self.remaining:
display = bytes[:self.remaining]
print 'Some data received:'
print display
self.remaining -= len(display)
def connectionLost(self, reason):
print 'Finished receiving body:', reason.getErrorMessage()
self.finished.callback(None)
agent = Agent(reactor)
d = agent.request(
'GET',
'http://example.com/',
Headers({'User-Agent': ['Twisted Web Client Example']}),
None)
def cbRequest(response):
print 'Response version:', response.version
print 'Response code:', response.code
print 'Response phrase:', response.phrase
print 'Response headers:'
print pformat(list(response.headers.getAllRawHeaders()))
finished = Deferred()
response.deliverBody(BeginningPrinter(finished))
return finished
d.addCallback(cbRequest)
def cbShutdown(ignored):
reactor.stop()
d.addBoth(cbShutdown)
reactor.run()
當請求完成BeginningPrinter的connectionLost()方法將被調用。
Response version: ('HTTP', 1, 0)
Response code: 302
Response phrase: Found
Response headers:
[('Location', ['http://www.iana.org/domains/example/']), ('Server', ['BigIP'])]
Finished receiving body: Response body fully received
看起來檢查if reason.check(twisted.web.client.ResponseDone)
會告訴你它是否成功。
您應該使用'reason.check(someType)'而不是'reason.type == someType'。前者尊重繼承層次結構,就像'except'語句一樣。此外,'ResponseDone'的專有名稱是twisted.web.client。ResponseDone',而不是'twisted.web._newclient.ResponseDone'。通常,具有以'_'開頭的組件的名稱是私有的,並且應用程序不應該使用它們。 –
好的,我完全錯過了下劃線。 –