Spring项目配置拦截器Interceptor

1. 自定义拦截器

   public class MyInterceptor implements HandlerInterceptor {
   
       @Override
       public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
           System.out.println("-----------preHandle-----------");
           return true;	//返回false直接响应不在继续往下运行业务
       }
   
       @Override
       public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
           System.out.println("-----------postHandle-----------");
       }
   
       @Override
       public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
           System.out.println("-----------afterCompletion-----------");
       }
   }
   

2. 注册拦截器

   @Configuration
   public class MyInterceptorConfig implements WebMvcConfigurer {
   
       @Override
       public void addInterceptors(InterceptorRegistry registry) {
           registry.addInterceptor(new MyInterceptor()).addPathPatterns("/**");//拦截路径
       }
   }