web自动化测试的时候，我们常常要进行整站几个重要的url的可用性测试，下面就是一个比较全面的url返回码与对应内容的list.
StatusCode = {100: ('Continue', 'Request received, please continue'),101: ('Switching Protocols','Switching to new protocol; obey Upgrade header'),200: ('OK', 'Request fulfilled, document follows'),201: ('Created', 'Document created, URL follows'),202: ('Accepted','Request accepted, processing continues off-line'),203: ('Non-Authoritative Information', 'Request fulfilled from cache'),204: ('No Content', 'Request fulfilled, nothing follows'),205: ('Reset Content', 'Clear input form for further input.'),206: ('Partial Content', 'Partial content follows.'),300: ('Multiple Choices','Object has several resources -- see URI list'),301: ('Moved Permanently', 'Object moved permanently -- see URI list'),302: ('Found', 'Object moved temporarily -- see URI list'),303: ('See Other', 'Object moved -- see Method and URL list'),304: ('Not Modified','Document has not changed since given time'),305: ('Use Proxy','You must use proxy specified in Location to access this ''resource.'),307: ('Temporary Redirect','Object moved temporarily -- see URI list'),400: ('Bad Request','Bad request syntax or unsupported method'),401: ('Unauthorized','No permission -- see authorization schemes'),402: ('Payment Required','No payment -- see charging schemes'),403: ('Forbidden','Request forbidden -- authorization will not help'),404: ('Not Found', 'Nothing matches the given URI'),405: ('Method Not Allowed','Specified method is invalid for this server.'),406: ('Not Acceptable', 'URI not available in preferred format.'),407: ('Proxy Authentication Required', 'You must authenticate with ''this proxy before proceeding.'),408: ('Request Timeout', 'Request timed out; try again later.'),409: ('Conflict', 'Request conflict.'),410: ('Gone','URI no longer exists and has been permanently removed.'),411: ('Length Required', 'Client must specify Content-Length.'),412: ('Precondition Failed', 'Precondition in headers is false.'),413: ('Request Entity Too Large', 'Entity is too large.'),414: ('Request-URI Too Long', 'URI is too long.'),415: ('Unsupported Media Type', 'Entity body in unsupported format.'),416: ('Requested Range Not Satisfiable','Cannot satisfy request range.'),417: ('Expectation Failed','Expect condition could not be satisfied.'),500: ('Internal Server Error', 'Server got itself in trouble'),501: ('Not Implemented','Server does not support this operation'),502: ('Bad Gateway', 'Invalid responses from another server/proxy.'),503: ('Service Unavailable','The server cannot process the request due to a high load'),504: ('Gateway Timeout','The gateway server did not receive a timely response'),505: ('HTTP Version Not Supported', 'Cannot fulfill request.')}
