package com.shuframework.javaeedemo.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;
import javax.servlet.annotation.WebFilter;

import org.springframework.core.annotation.Order;

/**
 * 使用注解标注过滤器
 * // * @WebFilter将一个实现了javax.servlet.Filter接口的类定义为过滤器
 * 属性filterName声明过滤器的名称,可选
 * 属性urlPatterns指定要过滤的URL模式,也可使用属性value来声明.(指定要过滤的URL模式是必选属性)
 */
//@WebFilter(filterName = "myFilter", urlPatterns = "/*")
//@Order(7)// 指定顺序没用
public class MyFilter implements Filter {
	
	@Override
	public void init(FilterConfig config) throws ServletException {
		System.out.println("myFilter过滤器初始化");
	}

	@Override
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
			throws IOException, ServletException {
		System.out.println("myFilter执行过滤操作");
		chain.doFilter(request, response);
	}

	@Override
	public void destroy() {
		System.out.println("myFilter过滤器销毁");
	}
}
