如何在spring boot中添加拦截器

本篇内容主要讲解"如何在spring boot中添加拦截器"，感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷，实用性强。下面就让小编来带大家学习"如何在spring boot中添加拦截器"吧!

如何在spring boot中添加拦截器？

1.首先自己实现一个拦截器

import org.springframework.web.servlet.HandlerInterceptor;import org.springframework.web.servlet.ModelAndView;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;public class MyInterceptor implements HandlerInterceptor{  @Override  public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {    System.out.println("preHandler");    return true;//这里一定要返回true要不然后面的不会执行  }  @Override  public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {    System.out.println("postHandler");  }  @Override  public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {    System.out.println("afterHandler");  }}

2.实现WebMvcConfigurer接口并重写addInterceptors方法

@Configurationpublic class WebMvcConfig implements WebMvcConfigurer {  @Override  public void addInterceptors(InterceptorRegistry registry) {    registry.addInterceptor(myInterceptor()).addPathPatterns("/**");//将自己的拦截器注册到spring中并添加拦截的路径  }  @Bean  MyInterceptor myInterceptor(){    return new MyInterceptor();//提供自己的拦截器的bean  }}

3.创建controller进行测试

@RestControllerpublic class HelloController {  @GetMapping("gethello")  public String getHello(){    System.out.println("get hello");    return "get hello";  }}

到此，相信大家对"如何在spring boot中添加拦截器"有了更深的了解，不妨来实际操作一番吧！这里是网站，更多相关内容可以进入相关频道进行查询，关注我们，继续学习！