Java Web Filter filter solves garbled characters

Tag:request   filter    filter garbled    

package com.kt.filter;import java.io.ioexception;import javax.servlet.filter;import  javax.servlet.filterchain;import javax.servlet.filterconfig;import javax.servlet.servletexception; import javax.servlet.servletrequest;import javax.servlet.servletresponse;import  javax.servlet.http.httpservletrequest;public class encodingfilter implements filter { Public void destroy ()  {}public void dofilter (servletrequest request,  Servletresponse response, filterchain chain)  throws IOException,  servletexception {//Set Response encoding Response.setcontenttype ("Text/html;charset=utf-8");// Convert the incoming ServletRequest object to the HttpServletRequest type httpservletrequest req =  (httpservletrequest)  request;//determines the request method and sets different encoding if  (Req.getmethod (). Equals ("GET") for different request modes  {// Create Encodingrquest Object Encodingrequest er = new encodingrequest (req); Chain.dofilter (er, Response);}  else if  (Req.getmethod () equals ("POST"))  {request.setcharacterencoding ("Utf-8"); Chain.dofilter (Request, response);}} Public void init (filterconfig fconfig)  throws servletexception {}}//------------ --------------package com.kt.filter;import java.io.unsupportedencodingexception;import  javax.servlet.http.httpservletrequest;import javax.servlet.http.httpservletrequestwrapper;public  Class encodingrequest extends httpservletrequestwrapper {private httpservletrequest  request;public encodingrequest (httpservletrequest request)  {super (request); this.request  = request;} Public string getparameter (String name)  {String value =  Request.getparameter (name);if  (value != null)  {try {value = new string (Value.getbytes ("iso-8859-1"),  "UTF-8");}  catch  (unsupportedencodingexception e)  {e.printstacktrace ();} Return value;}  else {return null;}}}

XML Configuration <filter><display-name>encodingfilter</display-name><filter-name>encodingfilter </filter-name><filter-class>com.kt.filter.EncodingFilter</filter-class></filter>< Filter-mapping><filter-name>encodingfilter</filter-name><url-pattern>/*</url-pattern ></filter-mapping>

Java Web Filter filter solves garbled characters