springboot自学之路-18（springboot注册拦截器）

深藏阁楼爱情的钟 2023-05-21 05:57 12阅读 0赞

一、定义拦截器 MyIntercepter

package com.example._09intercepter;
 
 import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;
 
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 
 /**
 * @Package: com.example._09intercepter
 * @ClassName: MyIntercepter
 * @Description: Description: 
 * @author: zq
 * @since: 2020/5/5 19:27
 * @version: 1.0
 * @Copyright: 2020 zq. All rights reserved.
 */
 public class MyIntercepter extends HandlerInterceptorAdapter {
 
 @Override
 public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
 System.out.println("MyIntercepter 拦截器");
 return true;
 }
 
 }

二、定义测试controller

package com.example._09intercepter;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.ResponseBody;
 
 /**
 * @Package: com.example._09intercepter
 * @ClassName: IntercepterController
 * @Description: Description: 
 * @author: zq
 * @since: 2020/5/5 19:31
 * @version: 1.0
 * @Copyright: 2020 zq. All rights reserved.
 */
 @Controller
 public class IntercepterController {
 
 @RequestMapping("/helloIntercepter")
 @ResponseBody
 public String helloIntercepter() {
 
 return "helloIntercepter";
 
 }
 
 }

三、定义启动类，继承 WebMvcConfigurerAdapter，注册拦截器

package com.example._09intercepter;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.context.annotation.Bean;
 import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
 
 /**
 * @Package: com.example._09intercepter
 * @ClassName: AppConfig
 * @Description: Description: 
 * @author: zq
 * @since: 2020/5/5 19:28
 * @version: 1.0
 * @Copyright: 2020 zq. All rights reserved.
 */
 @SpringBootApplication
 public class AppConfig extends WebMvcConfigurerAdapter {
 
 //注册拦截器
 @Override
 public void addInterceptors(InterceptorRegistry registry) {
 registry.addInterceptor(myIntercepter()).addPathPatterns("/*");
 }
 
 @Bean
 public MyIntercepter myIntercepter() {
 
 return new MyIntercepter();
 
 }
 
 public static void main(String[] args) {
 SpringApplication.run(AppConfig.class, args);
 }
 
 }

四、测试验证;[http://localhost:8084/helloIntercepter][http_localhost_8084_helloIntercepter]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTIwNDUwNDU_size_16_color_FFFFFF_t_70][]

[http_localhost_8084_helloIntercepter]: http://localhost:8084/citic/helloIntercepter
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTIwNDUwNDU_size_16_color_FFFFFF_t_70]: /images/20230521/b1e9c5e9872447cda72ab8da3f6ff914.png