Python有一个用于解析HTTP请求和响应的模块吗? [英] Does Python have a module for parsing HTTP requests and responses?
问题描述
httplib(现在是http.client)和朋友都有conn.getresponse()和HTTPResponse类,但似乎缺少conn.getrequest()和HTTPRequest类的服务器端操作。
httplib (now http.client) and friends all have conn.getresponse() and an HTTPResponse class, but the server-side operations of conn.getrequest() and an HTTPRequest class seem to be lacking.
我知道BaseHTTPServer和BaseHTTPRequestHandler可以执行此功能,但是它们不会公开这些方法以便在模块外部使用。
I understand that BaseHTTPServer and BaseHTTPRequestHandler can perform this functionality, but they don't expose these methods for use outside of the module.
基本上我想要的是BaseHTTPRequestHandler #parse_request是一个静态方法,它返回一个HTTPRequest对象,而不是填充成员变量。
Essentially what I want is BaseHTTPRequestHandler#parse_request to be a static method that returns an HTTPRequest object rather than populating member variables.
推荐答案
Jeff,启用解析我创建了一个基本HTTP请求处理程序的小九行子类:
Jeff, to enable parsing I create a small nine-line subclass of the base HTTP request handler:
from BaseHTTPServer import BaseHTTPRequestHandler
from StringIO import StringIO
class HTTPRequest(BaseHTTPRequestHandler):
def __init__(self, request_text):
self.rfile = StringIO(request_text)
self.raw_requestline = self.rfile.readline()
self.error_code = self.error_message = None
self.parse_request()
def send_error(self, code, message):
self.error_code = code
self.error_message = message
你现在可以带一个字符串内部HTTP请求的文本,并通过实例化此类来解析它:
You can now take a string with the text of an HTTP request inside and parse it by instantiating this class:
# Simply instantiate this class with the request text
request = HTTPRequest(request_text)
print request.error_code # None (check this first)
print request.command # "GET"
print request.path # "/who/ken/trust.html"
print request.request_version # "HTTP/1.1"
print len(request.headers) # 3
print request.headers.keys() # ['accept-charset', 'host', 'accept']
print request.headers['host'] # "cm.bell-labs.com"
# Parsing can result in an error code and message
request = HTTPRequest('GET\r\nHeader: Value\r\n\r\n')
print request.error_code # 400
print request.error_message # "Bad request syntax ('GET')"
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