老师请问一下

多个过滤器的情况下:

过滤器的初始化(init)顺序以及销毁(destroy)顺序是什么?

我测试了一下

发现过滤器的初始化(init)顺序以及销毁(destroy)顺序跟在web.xml里注册的的顺序无关??

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 {

	@Override
	public void destroy() {
		System.out.println("Filter1 destroy");
	}

	@Override
	public void doFilter(ServletRequest arg0, ServletResponse arg1, FilterChain arg2)
			throws IOException, ServletException {
		// TODO Auto-generated method stub

	}

	@Override
	public void init(FilterConfig arg0) throws ServletException {
		System.out.println("Filter1 init");

	}

}

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 Filter2 implements Filter {

	@Override
	public void destroy() {
		System.out.println("Filter2 destroy");
	}

	@Override
	public void doFilter(ServletRequest arg0, ServletResponse arg1, FilterChain arg2)
			throws IOException, ServletException {
		// TODO Auto-generated method stub

	}

	@Override
	public void init(FilterConfig arg0) throws ServletException {
		System.out.println("Filter2 init");

	}

}

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns="http://xmlns.jcp.org/xml/ns/javaee"
	xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
	id="WebApp_ID" version="3.1">
	<display-name>FilterDemo2</display-name>
	<welcome-file-list>
		<welcome-file>index.html</welcome-file>
	</welcome-file-list>

	<filter>
		<filter-name>filter2</filter-name>
		<filter-class>filter.Filter2</filter-class>
	</filter>
	<filter-mapping>
		<filter-name>filter2</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>




	<filter>
		<filter-name>filter1</filter-name>
		<filter-class>filter.Filter1</filter-class>
	</filter>
	<filter-mapping>
		<filter-name>filter1</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>


</web-app>

请问过滤器的初始化(init)顺序以及销毁(destroy)顺序是根据什么来决定的?