myfilter.java

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package com.jmwl.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.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class Myfilter implements Filter {

	public void destroy() {
		// TODO 自动生成方法存根

	}

	public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse,
			FilterChain filterChain) throws IOException, ServletException {
		HttpServletRequest request=(HttpServletRequest)servletRequest;
		HttpServletResponse response=(HttpServletResponse)servletResponse;
		request.setCharacterEncoding("gb2312");
		filterChain.doFilter(request, response);
	}

	public void init(FilterConfig arg0) throws ServletException {
		// TODO 自动生成方法存根

	}

}