filter1.java

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package filter;

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 Filter1 implements Filter {

	public void init(FilterConfig arg0) throws ServletException {
		System.out.println("过滤器初始化");//服务器启动时作
	}
	public void destroy() {
		System.out.println("过滤器destroy");
	}

	public void doFilter(ServletRequest arg0, ServletResponse arg1,
			FilterChain arg2) throws IOException, ServletException {
		System.out.println("过滤器doFilter");//提交时作,接受了get,post各种提交
		arg2.doFilter(arg0, arg1);
	}



}