How filter filter in Java handles Chinese garbled characters

Note: When learning to use Selvert filter to handle Chinese garbled characters, when the filter configuration is initialized with Utf-8 processing Chinese garbled, but in the submitted JSP page used GBK. Although both can come out in Chinese garbled, but it caused the processing garbled format inconsistent. So compile error.

Workaround: Use Utf-8 or GBK everywhere

//Filter Classcharactorfilter.jsp PackageCn.com.Filter;Importjava.io.IOException;ImportJavax.servlet.Filter;ImportJavax.servlet.FilterChain;ImportJavax.servlet.FilterConfig;Importjavax.servlet.ServletException;Importjavax.servlet.ServletRequest;ImportJavax.servlet.ServletResponse; Public classCharactorfilterImplementsFilter {//inherit the filter class//character encodingString encoding=NULL;  Public voidDoFilter (servletrequest request, servletresponse response, Filterchain chain)throwsIOException, servletexception {if(encoding!=NULL){        //set the request character encodingrequest.setcharacterencoding (encoding); //Set Response character encodingResponse.setcontenttype ("text/html;charset=" +encoding); }     //Pass to next filterChain.dofilter (request, response); }     Public voidInit (Filterconfig filterconfig)throwsservletexception {//Get initialization ParametersEncoding=filterconfig.getinitparameter ("Encoding"); }     Public voiddestroy () {//TODO auto-generated Method Stubencoding=NULL; }}

Xml

<filter> <!--Note This is filter, do not configure it as servlet-->    <filter-name>CharactorFilter</filter-name> <!--filter Name--   <filter-class>cn.com.filter.charactorfilter</filter-class> <!--filter's full class name--       <init-param> <!--initialization Parameters--           <param-name>encoding</param-name> <!--parameter name---           <param-value>utf-8</param-value> <!--parameter Values--       </init-param>  </filter>  <filter-mapping> <!--filter Map--       <filter-name>CharactorFilter</filter-name><!--Filter Name--         <url-pattern>/*</url-pattern><!--URL mapping, handling all pages garbled--</filter-mapping>

How filter filter in Java handles Chinese garbled characters