我們經常會用python來進行抓包，模擬登陸等等， 勢必要構造http請求包。 http的request通常有4個方法get，post，put，delete，分別對應于查詢，更新，添加，刪除。我們經常用到的也就get，post。 1.用python構造get #build request for accessed url ??? homeReq = urllib.request.Request( ???????? url = csdnAccessModuleUrl ???????? ) ??? homeReq.add_header('Accept', 'text/html, application/xhtml+xml, */*'); ??? homeReq.add_header('Accept-Language', 'en-US') ??? homeReq.add_header('Accept-Encoding', 'gzip, deflate') ??? homeReq.add_header('Connection', 'Keep-Alive'); ??? homeReq.add_header('Referer', 'http://passport.csdn.net/account/login?from='+urllib.parse.quote(moduleUrl))#http%3a%2f%2fwrite.blog.csdn.net%2f') ??? homeReq.add_header('User-Agent', 'Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)'); ??? #open access url ??? resp = urllib.request.urlopen(homeReq) 2.用python構造post #build request for login url ??? #post data ??? postdata = { ??? ??? 'u':username, ??? ??? 'p':password, ??? ??? 'remember':'1', ??? ??? 't':'log', ??? ??? 'f':urllib.parse.quote(moduleUrl), ??? ??? } ??? postdata = urllib.parse.urlencode(postdata).encode('utf-8') ??? print(postdata) ??? req = urllib.request.Request( ???????? url = csdnLoginUrl, ???????? data = postdata) ??? req.add_header('Accept', 'text/html, application/xhtml+xml, */*'); ??? req.add_header('Accept-Language', 'en-US') ??? req.add_header('Accept-Encoding', 'gzip, deflate') ??? req.add_header('Connection', 'Keep-Alive'); ??? req.add_header('Referer', csdnAccessModuleUrl) ??? req.add_header('User-Agent', 'Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)'); ??? #open login url ??? r = urllib.request.urlopen(req) 通過上面2個例子我們可以發現， 當Request的postdata賦值時，則為post方法，默認為get。