encodingfilter.java

一个基于java工厂模式的 的实现

/*
 * EncodingFilter.java
 *
 * Created on 2007年4月24日, 下午2:25
 */

package com.ebuy.web.filters;

import java.io.*;
import java.net.*;
import java.util.*;
import java.text.*;
import javax.servlet.*;
import javax.servlet.http.*;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

/**
 *
 * @author  Administrator
 * @version
 */

public class EncodingFilter implements Filter
{

    private FilterConfig filterConfig = null;
    private String encodename;
    
    public EncodingFilter()
    {
       
    }
    
    public void doFilter(ServletRequest request, ServletResponse response,
            FilterChain chain)
            throws IOException, ServletException
    {
       request.setCharacterEncoding(this.encodename);
       response.setCharacterEncoding(this.encodename);
       chain.doFilter(request,response);
    }
    
    

    public void destroy()
    {
    }
    
    
    public void init(FilterConfig filterConfig)
    {        
        this.filterConfig = filterConfig;
        this.encodename=this.filterConfig.getInitParameter("EncodingName");
    }
}