我正在尝试将 json 内容从 url 宽度的 sendMessage 发送到客户端。
def broadcast(self):
response = urllib2.urlopen('http://localhost:8001/json?as_text=1')
data = json.load(response)
for c in self.clients:
c.sendMessage(data)
我收到错误
File "myServer.py", line 63, in broadcast
c.sendMessage(data)
File "/Library/Python/2.7/site-packages/autobahn-0.6.3-py2.7.egg/autobahn /websocket.py", line 2605, in sendMessage
self.sendMessageHybi(payload, binary, payload_frag_size, sync, doNotCompress)
File "/Library/Python/2.7/site-packages/autobahn-0.6.3-py2.7.egg/autobahn /websocket.py", line 2671, in sendMessageHybi
self.sendFrame(opcode = opcode, payload = payload, sync = sync, rsv = 4 if sendCompressed else 0)
File "/Library/Python/2.7/site-packages/autobahn-0.6.3-py2.7.egg/autobahn/websocket.py", line 2161, in sendFrame
raw = ''.join([chr(b0), chr(b1), el, mv, plm])
exceptions.TypeError: sequence item 4: expected string, dict found
最佳答案
sendMessage
接受字节字符串或 unicode 字符串 - 而不是字典。这是因为 WebSocket 是二进制数据和文本数据的传输。它不是结构化对象的传输。
您可以发送字典的 JSON 编码形式,但不能发送字典本身:
def broadcast(self):
response = urllib2.urlopen('http://localhost:8001/json?as_text=1')
for c in self.clients:
c.sendMessage(response)
但请注意,您实际上想要使用 twisted.web.client
- 而不是阻塞 urllib2
:
from twisted.internet import reactor
from twisted.web.client import Agent, readBody
agent = Agent(reactor)
def broadcast(self):
getting = agent.request(
b"GET", b"http://localhost:8001/json?as_text=1")
getting.addCallback(readBody)
def got(body):
for c in self.clients:
c.sendMessage(body)
getting.addCallback(got)
return getting
关于javascript - 使用高速公路 python 发送 json,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/19250458/