Global Encoding Filter

Importjava.io.IOException;Importjava.io.UnsupportedEncodingException;ImportJavax.servlet.Filter;ImportJavax.servlet.FilterChain;ImportJavax.servlet.FilterConfig;Importjavax.servlet.ServletException;Importjavax.servlet.ServletRequest;ImportJavax.servlet.ServletResponse;Importjavax.servlet.http.HttpServletRequest;ImportJavax.servlet.http.HttpServletRequestWrapper;ImportJavax.servlet.http.HttpServletResponse; Public classEncodingfilterImplementsFilter {Private StaticString encoding; Private Static FinalString default_charset= "UTF-8"; @Override Public voiddestroy () {System.out.println ("--------Destroy---------"); } @Override Public voidDoFilter (servletrequest request, servletresponse response, Filterchain chain)throwsIOException, servletexception {System.out.println ("--------DoFilter---------"); HttpServletRequest HttpRequest=(httpservletrequest) request; HttpServletResponse HttpResponse=(httpservletresponse) response; if("GET". Equals (Httprequest.getmethod ())) {Encodinghttpservletrequest wrapper=Newencodinghttpservletrequest (HttpRequest, encoding);          Chain.dofilter (wrapper, response); }Else{httprequest.setcharacterencoding (encoding); Httpresponse.setcontenttype ("Text/html;charset=" +encoding);          Chain.dofilter (request, response); }    }    Private Static classEncodinghttpservletrequestextendshttpservletrequestwrapper{PrivateHttpServletRequest request;  Publicencodinghttpservletrequest (httpservletrequest request,string encoding) {Super(Request);  This. Request =request; } @Override Publicstring GetParameter (string name) {String Value=Request.getparameter (name); Try{Value=NewString (Value.getbytes ("Iso8859-1"), encoding); } Catch(unsupportedencodingexception e) {e.printstacktrace (); }               return Super. GetParameter (name); }} @Override Public voidInit (filterconfig config)throwsservletexception {System.out.println ("--------Init---------"); Encoding= Config.getinitparameter ("Encoding"); if(encoding==NULL||"". Equals (encoding)) encoding=Default_charset; } }

<!--sets the global encoding format for Get,post requests, with the default encoding of UTF-8 -  <Filter>      <Filter-name>Characterfilter</Filter-name>      <Filter-class>Com.mscncn.jsd1404.EncodingFilter</Filter-class>      <Init-param>          <Param-name>Encoding</Param-name>          <Param-value>UTF-8</Param-value>      </Init-param>  </Filter>  <filter-mapping>      <Filter-name>Characterfilter</Filter-name>      <!--Block all requests, set the encoding for all requests -      <Url-pattern>/*</Url-pattern>  </filter-mapping>

Global Encoding Filter