我编写了一个简单的http服务器来处理POST请求:
class MyHandler( BaseHTTPServer.BaseHTTPRequestHandler):
def do_POST( self ):
ctype, pdict = cgi.parse_header(self.headers.getheader('content-type'))
postvars = {}
try:
if ctype == 'application/x-www-form-urlencoded':
length = int(self.headers.getheader('content-length'))
postvars = cgi.parse_qs(self.rfile.read(length), keep_blank_values=1)
self.send_response( 200 )
self.send_header( "Content-type", "text")
self.send_header( "Content-length", str(len(body)) )
self.end_headers()
self.wfile.write(body)
except:
print "Error"
def httpd(handler_class=MyHandler, server_address = ('2.3.4.5', 80)):
try:
print "Server started"
srvr = BaseHTTPServer.HTTPServer(server_address, handler_class)
srvr.serve_forever() # serve_forever
except KeyboardInterrupt:
server.socket.close()
if __name__ == "__main__":
httpd( )
服务器运行良好但有时它只是挂起。当我按 CTRL + C 时,它会出现以下错误,然后继续接收数据:
Exception happened during processing of request from ('1.1.1.2', 50928)
Traceback (most recent call last):
File "/usr/lib/python2.6/SocketServer.py", line 281, in _handle_request_noblock
self.process_request(request, client_address)
File "/usr/lib/python2.6/SocketServer.py", line 307, in process_request
self.finish_request(request, client_address)
File "/usr/lib/python2.6/SocketServer.py", line 320, in finish_request
self.RequestHandlerClass(request, client_address, self)
File "/usr/lib/python2.6/SocketServer.py", line 615, in __init__
self.handle()
File "/usr/lib/python2.6/BaseHTTPServer.py", line 329, in handle
self.handle_one_request()
File "/usr/lib/python2.6/BaseHTTPServer.py", line 312, in handle_one_request
self.raw_requestline = self.rfile.readline()
File "/usr/lib/python2.6/socket.py", line 406, in readline
data = self._sock.recv(self._rbufsize)
KeyboardInterrupt
有人可以告诉我如何纠正这个问题吗?我无法理解错误。
答案 0 :(得分:11)
我完全重写了我的解决方案以解决两个缺点:
它尽可能基于您的代码。它现在是一个完整的独立演示。如果您在http://localhost:8000/上打开浏览器并将'模拟错误'写入表单并按提交,则会模拟运行时错误。
import BaseHTTPServer
import SocketServer
import cgi
class MyHandler(BaseHTTPServer.BaseHTTPRequestHandler):
def do_POST(self):
ctype, pdict = cgi.parse_header(self.headers.getheader('content-type'))
postvars = {}
try:
if ctype == 'application/x-www-form-urlencoded':
length = int(self.headers.getheader('content-length'))
postvars = cgi.parse_qs(self.rfile.read(length),
keep_blank_values=1)
assert postvars.get('foo', '') != ['simulate error']
body = 'Something'
self.send_response(200)
self.send_header("Content-type", "text")
self.send_header("Content-length", str(len(body)))
self.end_headers()
self.wfile.write(body)
except:
self.send_error(500)
raise
def do_GET(self):
# demo for testing POST by web browser - without valid html
body = 'Something\n<form method="post" action="http://%s:%d/">\n' \
'<input name="foo" type="text"><input type="submit"></form>\n'\
% self.server.server_address
self.send_response(200)
self.send_header("Content-type", "text/html")
self.send_header("Content-length", str(len(body)))
self.end_headers()
self.wfile.write(body)
class ForkingHTTPServer(SocketServer.ForkingMixIn, BaseHTTPServer.HTTPServer):
def finish_request(self, request, client_address):
request.settimeout(30)
# "super" can not be used because BaseServer is not created from object
BaseHTTPServer.HTTPServer.finish_request(self, request, client_address)
def httpd(handler_class=MyHandler, server_address=('localhost', 8000)):
try:
print "Server started"
srvr = ForkingHTTPServer(server_address, handler_class)
srvr.serve_forever() # serve_forever
except KeyboardInterrupt:
srvr.socket.close()
if __name__ == "__main__":
httpd()
可以禁用分叉,例如通过从代码中删除类SocketServer.ForkingMixIn
来进行调试。