使用 Python web.py 处理 POST 请求

Handling POST requests using Pythons web.py

我有一个非常简单的服务器。我使用 Python 2.7 和 web.py.

基本上,我的代码如下所示:

urls = ("/endpoint", "Endpoint")

class Endpoint(object):
    def GET(self):
        return "End point"
    def POST(self):
        data = web.data()
        web.header('Content-Type', 'application/json')
        result = json.loads(data)
        logging.info("[Server] Endpoint POST with payload: " + json.dumps(result))
        return "Endpoint POST"

我通过发出这样的 POST 请求来测试此服务器:

echo '{"field": "test"}' | curl -d @- http://my.ip.number:port/endpoint

我尝试了服务器发出 POST 请求的其他方法。我还尝试从终端和浏览器发出获取请求。

在所有情况下,我都会收到这个非常奇怪的错误。

Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/web.py-0.37-py2.7.egg/web/application.py", line 239, in process
    return self.handle()
  File "/usr/local/lib/python2.7/dist-packages/web.py-0.37-py2.7.egg/web/application.py", line 229, in handle
    fn, args = self._match(self.mapping, web.ctx.path)
  File "/usr/local/lib/python2.7/dist-packages/web.py-0.37-py2.7.egg/web/application.py", line 427, in _match
    for pat, what in mapping:
ValueError: need more than 1 value to unpack

为什么会出现此错误,我可以采取什么措施来防止它?

谢谢!

编辑 1:

回溯显示后,我也得到了这个:

192.168.46.1:51390 - - [16/Mar/2016 12:54:08] "HTTP/1.1 GET /favicon.ico" - 500 Internal Server Error

IP和端口都不是我用的

编辑 2

#!/usr/bin/python
# -*- coding: utf-8 -*-

# Unicode
from __future__ import unicode_literals

import sys
reload(sys)
# -----

# Logging
import logging
logging.basicConfig(level=logging.INFO)
# -----

# Libs
import web
import json
# -----

urls = ("/", "Index",
        "/endpoint1", "EP1"
        "/endpoint2", "EP2")

class Index(object):
    # In the browser, this displays "Index", but also causes the error on the server side.
    def GET(self):
        return "Index"
    # Doesn't do anything, but causes the error
    def POST(self):
        data = web.data()
        web.header('Content-Type', 'application/json')
        result = json.loads(data)

        logging.info("[Server] Index " + json.dumps(result))
        return "Index POST"

class EP1(object):
    def GET(self):
        return "EP1"
    def POST(self):
        data = web.data()
        web.header('Content-Type', 'application/json')
        result = json.loads(data)

        logging.info("[Server] EP1 " + json.dumps(result))
        return "EP1 POST"


class EP2(object):
    def GET(self):
        return "EP2"
    def POST(self):
        data = web.data()
        web.header('Content-Type', 'application/json')
        result = json.loads(data)

        logging.info("[Server] EP2 " + json.dumps(result))
        return "EP2 POST"

if __name__ == "__main__":
    logging.info("[Server] Starting server.")
    app = web.application(urls, globals())
    app.run()

这是我的服务器的样子。

我这样启动服务器:

python server.py 0.0.0.0:7331

如果我从浏览器访问服务器的根端点,我得到 "Index" 并且错误仍然发生。其他两个端点没有 return 任何东西并导致错误。

您在此处的第二行缺少一个逗号:

urls = ("/", "Index",
        "/endpoint1", "EP1"
        "/endpoint2", "EP2")

应该是这样的:

urls = ("/", "Index",
        "/endpoint1", "EP1",
        "/endpoint2", "EP2")

没有逗号的情况是 Python 连接两个字符串,中间没有逗号。

所以根据您的代码,urls 实际上是

("/", "Index", "/endpoint1", "EP1/endpoint2", "EP2")