Version httpclient_3.x usage

/** *  */ Packageme;ImportOrg.apache.commons.httpclient.Header;Importorg.apache.commons.httpclient.HttpClient;ImportOrg.apache.commons.httpclient.HttpStatus;ImportOrg.apache.commons.httpclient.MultiThreadedHttpConnectionManager;ImportOrg.apache.commons.httpclient.NameValuePair;ImportOrg.apache.commons.httpclient.methods.GetMethod;ImportOrg.apache.commons.httpclient.methods.PostMethod;Importorg.apache.commons.lang3.StringUtils;/*** Created by Lzd on June 27, 2016 morning 9:47:36*/ Public classhttpclient_3x { Public Static voidMain (string[] args)throwsexception{//req ();//Isredirect ();Loginreq (); }        //post or GET request     Public Static voidReq ()throwsexception{HttpClient HttpClient=NewHttpClient (); //Configure Agents//httpclient.gethostconfiguration (). SetProxy ("127.0.0.1", 80); //Postmethod Postmethod = new Postmethod ("http://java.sun.com");GetMethod GetMethod=NewGetMethod ("http://java.sun.com"); intExecutestatus =Httpclient.executemethod (GetMethod); System.out.println (executestatus);//successful return 200, should be the status code of the response//Print the returned informationString responsebodyasstring =getmethod.getresponsebodyasstring (); System.out.println (responsebodyasstring);//Release Connectiongetmethod.releaseconnection (); }        //Get or post append params        Private StaticGetMethod Getgetmethod () {return NewGetMethod ("Www.aa.com/a?key = 123"); }        Private StaticPostmethod Getpostmethod () {Postmethod Postmethod=NewPostmethod ("www.aa.com/a"); Namevaluepair Namevaluepair=NewNamevaluepair ("Key", "Val"); Postmethod.setrequestbody (NewNamevaluepair[]{namevaluepair}); returnPostmethod; }    //detect if redirection is being redirected//301 sc_moved_permanently Page has been permanently moved to another new address//302 sc_moved_temporarily Page temporarily moved to another new address//the address requested by the 303 Sc_see_other client must be accessed through a different URL//307 Sc_temporary_redirect with sc_moved_temporarily         Public Static voidIsredirect ()throwsexception{HttpClient HttpClient=NewHttpClient (); GetMethod GetMethod=NewGetMethod ("http://192.168.10.150/pdc/app/book/info/index.html");                Httpclient.executemethod (GetMethod);                Getmethod.releaseconnection (); intStatusCode =Getmethod.getstatuscode (); if(StatusCode = = httpstatus.sc_moved_permanently | | statusCode = =httpstatus.sc_moved_temporarily|| StatusCode = =Httpstatus.sc_see_other|| StatusCode = =httpstatus.sc_temporary_redirect) {Header Responseheader= Getmethod.getresponseheader ("Location"); if(Responseheader! =NULL) {String value=Responseheader.getvalue (); if(Stringutils.isnotempty (value)) {GetMethod method=NewGetMethod (value);                    Httpclient.executemethod (method); //actions after the execution                }            }        }    }        /** Analog Login * First access to normal page * Get back the results, determine whether to let login, if let login, login and then into. *      *      */     Public Static voidLoginreq ()throwsexception{String TargetUrl= "/pdc/app/book/info/index.html"; HttpClient HttpClient=NewHttpClient (); Httpclient.gethostconfiguration (). Sethost ("192.168.10.150", 80); Postmethod Postmethod=NewPostmethod (TargetUrl);        Httpclient.executemethod (Postmethod);                Postmethod.releaseconnection (); intStatusCode =Postmethod.getstatuscode (); if(StatusCode = =httpstatus.sc_moved_permanently|| StatusCode = =httpstatus.sc_moved_temporarily|| StatusCode = =Httpstatus.sc_see_other|| StatusCode = =httpstatus.sc_temporary_redirect) {Header Responseheader= Postmethod.getresponseheader ("Location"); if(Responseheader! =NULL) {String value=Responseheader.getvalue (); System.out.println ("REDIRECT location =" +value); if(Stringutils.isnotempty (value) && value.indexof ("login")! = 1) {namevaluepair name=NewNamevaluepair ("UserName", "admin"); Namevaluepair pwd=NewNamevaluepair ("pwd", "admin"); Postmethod Loginmethod=NewPostmethod ("/pdc/userlogin.html"); Loginmethod.setrequestbody (Newnamevaluepair[]{name,pwd});                    Httpclient.executemethod (Loginmethod);                                        Loginmethod.releaseconnection (); /**methods of obtaining cookies cookie[] cookies = httpclient.getstate (). GetCookies ();                    System.out.println ("----------------------------cookie Start------------------------------------------");                    for (Cookie cookie:cookies) {System.out.println (cookie);                    } System.out.println ("----------------------------------------------------------------------");                    header[] headercookies = postmethod.getresponseheaders ("Set-cookie");                    for (header Header:headercookies) {System.out.println (header); } System.out.println ("----------------------------Cookie End------------------------------------------"                     ); */GetMethod Targetmethod=NewGetMethod (TargetUrl);                    Httpclient.executemethod (Targetmethod);                    System.out.println (Targetmethod.getresponsebodyasstring ());                Targetmethod.releaseconnection (); }            } Else{System.out.println ("Invalid redirect"); }        } Else{System.out.println (postmethod.getresponsebodyasstring ()); }    }        //multi-threaded access to httpclient (the same site), only need to httpclient when instantiating the Multithreadedhttpconnectionmanager can be     Public Static voidgethttpclient () {Multithreadedhttpconnectionmanager ConnectionManager=NewMultithreadedhttpconnectionmanager (); HttpClient Client=NewHttpClient (ConnectionManager); }    }//for an example of uploading a file via HTTP and submitting XML format data, see the original address//http://www.blogjava.net/Alpha/archive/2007/01/22/95216.html

Version httpclient_3.x usage