HttpClient sending Multipart/form-data type parameters and receiving parameters with Multipartrequest

I. Using httpclient to send forms based on content-type= "Multipart/form-data"

 Packagecom.test.httpclient;Importjava.io.IOException;ImportJava.util.Map;Importjavax.servlet.ServletException;Importorg.apache.commons.httpclient.methods.RequestEntity;Importorg.apache.commons.httpclient.methods.multipart.MultipartRequestEntity;ImportOrg.apache.commons.httpclient.methods.multipart.Part;ImportOrg.apache.commons.httpclient.methods.multipart.StringPart;ImportOrg.apache.commons.httpclient.methods.PostMethod;ImportOrg.apache.commons.httpclient.params.HttpMethodParams;Importorg.apache.commons.httpclient.HttpClient; Public classsendxmlaction{ PublicString Execute ()throwsservletexception, IOException {String xmlhead= This. Getrequest (). GetParameter ("Xmlhead"); String Xmlbody= This. Getrequest (). GetParameter ("Xmlbody"); System.out.println ("Xmlhead = =" +xmlhead); System.out.println ("Xmlbody = =" +xmlbody); //generate the Post method with the URL settings of the remote service for the HTTP client to executeString Remoteurl = "Http://**.**.***.***:8888/project/receiveservlet"; Postmethod Method=NewPostmethod (Remoteurl); //Multipart/form-data, boundary=---------------------------7de2b13a790640//method.addparameter ("Xmlhead", Xmlhead); //method.addparameter ("Xmlbody", xmlbody);HttpClient http_clinet=NewHttpClient (); synchronized(http_clinet) {Try            {                //send two independent two XML part, based on content-type= "Multipart/form-data" form, using multiple send modepart[] Parts = {NewStringpart ("Xmlhead", Xmlhead),NewStringpart ("Xmlbody", Xmlbody)};//both Stringpart and Filepart can be put in .Requestentity requestentity =Newmultipartrequestentity (Parts, Method.getparams ());                                Method.setrequestentity (requestentity); Method.getparams (). Setparameter (Httpmethodparams.so_timeout,30000); //link Timeout 30 secondsHttp_clinet.gethttpconnectionmanager (). Getparams (). Setconnectiontimeout (30000); //Read timeout 30 secondsHttp_clinet.gethttpconnectionmanager (). Getparams (). Setsotimeout (30000);                                Http_clinet.executemethod (method); String[] Result=NewString[2]; result[0] =string.valueof (Method.getstatuscode ()); result[1] =method.getresponsebodyasstring (); System.out.println ("HTTP Status:" +result[0]); System.out.println ("HTTP response:" +result[1]); }            Catch(Exception e) {e.printstacktrace (); }            finally            {                if(Method! =NULL) {method.releaseconnection (); } Method=NULL; }        }                return"Success"; }}

Second, multipartrequest receiving parameters

 PackageCom.test.servlet;Importjava.io.IOException;ImportJava.io.PrintWriter;ImportJava.io.File;Importjavax.servlet.ServletException;ImportJavax.servlet.http.HttpServlet;Importjavax.servlet.http.HttpServletRequest;ImportJavax.servlet.http.HttpServletResponse;ImportOrg.apache.log4j.Logger;Importcom.oreilly.servlet.MultipartRequest; Public classBossservletextendshttpservlet{/**Serialversionuid*/    PrivateLogger Logger = Logger.getlogger (bossservlet.class);  Public voiddoget (httpservletrequest request, httpservletresponse response)throwsIOException, servletexception { This. DoPost (request, response); }    protected voidDoPost (httpservletrequest request, httpservletresponse response)throwsservletexception, IOException {//multipartrequestString head =NULL ; String Body=NULL ; Try{File Filedir=NewFile ( This. Getservletcontext (). Getrealpath ("/formhttp")); if(!filedir.exists ())            {Filedir.mkdirs (); }                        intInmaxpostsize = 10 * 1024 * 1024; //utf-8 Chinese encoding mode upload fileMultipartrequest multirequest =NewMultipartrequest (Request,filedir.getabsolutepath (), Inmaxpostsize, "UTF-8"); Head= Multirequest.getparameter ("Head"); Body= Multirequest.getparameter ("Body")); System.out.println ("XmlHead2 =" +xmlhead); System.out.println ("XmlBody2 =" +xmlbody); }        Catch(Exception e) {e.printstacktrace (); } response.setcharacterencoding ("UTF-8"); Response.setcontenttype ("Multipart/mixed;boundary=---------------------------7de2b13a790640"); PrintWriter out=Response.getwriter (); String Res=NULL; Try{res= .....        } Catch(Exception e) {e.printstacktrace (); }        if(! (res = =NULL|| "". Equals (res))) {            Try{out.println (res); }            Catch(Exception e) {e.printstacktrace (); }            finally{out.close (); }        }    }     Public voidInit ()throwsservletexception {Super. Init (); }}

If a form based on content-type= "Multipart/form-data" is sent, but the parameter value is obtained through Request.getparameter ("* *"), the parameter value obtained is NULL.

HttpClient sending Multipart/form-data type parameters and receiving parameters with Multipartrequest