一：配置过滤器

1.创建TestFilter类并实现Filter接口

@WebFilter(filterName="testFilter",urlPatterns="/*")  //@WebFilter是定义过滤器的注解 ，urlPatterns="/*" 定义过滤器过滤的路径

public class TestFilter implements Filter{

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

	@Override
	public void doFilter(ServletRequest arg0, ServletResponse arg1, FilterChain arg2)
			throws IOException, ServletException {
		System.out.println("过滤器被执行");
		
		arg2.doFilter(arg0, arg1);
	}

	@Override
	public void init(FilterConfig arg0) throws ServletException {
		System.out.println("过滤器被初始化");
	}

}

2.需要在启动类中添加@ServletComponentScan注解@WebFilter注解方可生效

@ServletComponentScan(basePackages = {"www.zxf.com.filter","www.zxf.com.listener"})
@EnableAutoConfiguration
public class App {

	public static void main(String[] args) {
		SpringApplication.run(App.class, args);
	}
	
}

二：配置监听器

1.创建TestListener类并实现ServletContextListener接口

@WebListener  //将该类定义为一个监听器
public class TestListener implements ServletContextListener{

	@Override
	public void contextDestroyed(ServletContextEvent arg0) {
		System.out.println("监听器被销毁");
	}

	@Override
	public void contextInitialized(ServletContextEvent arg0) {
		System.out.println("监听器被创建");
	}

}

2.需要在启动类中添加@ServletComponentScan注解@WebListener注解方可生效

@ServletComponentScan(basePackages = {"www.zxf.com.filter","www.zxf.com.listener"})
@EnableAutoConfiguration
public class App {

	public static void main(String[] args) {
		SpringApplication.run(App.class, args);
	}
	
}	

三：配置拦截器

1.创建拦截器一

package www.zxf.com.intercepter;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

public class IntercepterTest1 implements HandlerInterceptor{

	@Override
	public void afterCompletion(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, Exception arg3)
			throws Exception {
		System.out.println("请求执行后1");
	}

	@Override
	public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, ModelAndView arg3)
			throws Exception {
		System.out.println("请求执行后视图渲染前1");
	}

	@Override
	public boolean preHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2) throws Exception {
		System.out.println("请求执行之前1");
		return true;
	}

}

2.创建拦截器二

package www.zxf.com.intercepter;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

public class IntercepterTest2 implements HandlerInterceptor{

	@Override
	public void afterCompletion(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, Exception arg3)
			throws Exception {
		System.out.println("请求执行后2");
	}

	@Override
	public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, ModelAndView arg3)
			throws Exception {
		System.out.println("请求执行后视图渲染前2");
	}

	@Override
	public boolean preHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2) throws Exception {
		System.out.println("请求执行之前2");
		return true;
	}

}

3.配置拦截器并将拦截器一和拦截器二加入该配置中

package www.zxf.com.intercepter;

import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;

@Configuration
public class WebAdepter extends WebMvcConfigurerAdapter{

	@Override
	public void addInterceptors(InterceptorRegistry registry) {
		registry.addInterceptor(new IntercepterTest1()).addPathPatterns("/**");//配置拦截路径
		registry.addInterceptor(new IntercepterTest2()).addPathPatterns("/**");//配置拦截路径
		super.addInterceptors(registry);
	}
	
}