characterencondingfilter.java

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package com.jxyd.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;
import javax.servlet.http.HttpSession;

public class CharacterEncondingFilter implements Filter {

	private FilterConfig config;
	private String encoding = "ISO8859-1";

	public void destroy() {
		config = null;

	}

	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain chain) throws IOException, ServletException {
		request.setCharacterEncoding(encoding);

		HttpServletRequest req = (HttpServletRequest) request;
		String url = req.getRequestURI();// 请求要到的URL
		System.out.println("请求的URL地址是:" + url + req.getQueryString());

		chain.doFilter(request, response);

	}

	public void init(FilterConfig config) throws ServletException {
		this.config = config;
		String s = config.getInitParameter("encoding");
		if (s != null) {
			encoding = s;
		}

	}

}