firstfilter.java

JavaWeb高级特性书中源代码

package org.it315.filters;

import java.io.IOException;
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;

public class FirstFilter implements Filter
{
	private FilterConfig filterConfig = null;
	
	public void init(FilterConfig filterConfig) throws ServletException
	{
		this.filterConfig = filterConfig;
	}
	
	public void doFilter(ServletRequest request,
		ServletResponse response,FilterChain chain)
			throws IOException, ServletException
	{
		chain.doFilter(request, response);
	}

	public void destroy()
	{
		this.filterConfig = null;
	}
}