利用过滤器filter处理乱码

package com.ruanko.service;

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;

public class CharFilter implements Filter{
	
	private String encoding = null;

	@Override
	public void destroy() {
		// TODO Auto-generated method stub
		
	}

	@Override
	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain chain) throws IOException, ServletException {
		// TODO Auto-generated method stub
		request.setCharacterEncoding(encoding);
		response.setCharacterEncoding(encoding);
		chain.doFilter(request, response);
		System.out.println("=============正在执行过滤器");
		
	}

	@Override
	public void init(FilterConfig filterConfig) throws ServletException {
		// TODO Auto-generated method stub
		encoding = filterConfig.getInitParameter("encoding");
	}

}

web.xml

	
		CharFilter
		com.ruanko.service.CharFilter
		
			encoding
			UTF-8
		
	

	
		CharFilter
		/*
	

个人学习笔记，仅供参考