encodingfilter.java

本人课程设计时做的一个用struts框架实现的基于cmmi2的项目管理系统的原型。还有部分功能尚未实现

package com.cmmi2pms.common;

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.UnavailableException; 
/**
* <p>Title: 中文问题</p>
* <p>Description: 中文问题</p>
* <p>Copyright: Copyright (c) 2002 writeonce</p>
* <p>Company: </p>
* @author writeonce
* @version 1.0
*/ 

public class EncodingFilter implements Filter {
   protected String encoding = null;
   protected FilterConfig filterConfig = null;
   public void destroy() {
       this.encoding = null;
       this.filterConfig = null; 

   }
   public void doFilter(ServletRequest request, ServletResponse response,
                        FilterChain chain)
throws IOException, ServletException {
       // Select and set (if needed) the character encoding to be used
       String encoding = selectEncoding(request);
       if (encoding != null)
       {
           request.setCharacterEncoding(encoding);
       }
// Pass control on to the next filter
       chain.doFilter(request, response);
   }
   public void init(FilterConfig filterConfig) throws ServletException { 

this.filterConfig = filterConfig;
       this.encoding = filterConfig.getInitParameter("encoding");
   }
   protected String selectEncoding(ServletRequest request) { 

       return (this.encoding); 

   } 


}