1. 继承HandlerInterceptorAdapter, 实现preHandle前置处理器，return true则进行后续处理，实现postHandle,afterCompletion后置处理。
2.实现WebMvcConfigurer, SpringBoot2实现WebMvcConfigurationSupport
1 @Configuration
2 public classs WebConfig extends WebMveConfigurationSupport
3 {
4 @Override
5 public void addInterceptors(InterceptrorRegistry registry){
6 //设置拦截路径
7 registry.addInterceptor(new
8 MyHttpInterrcptor()).addPathPatterns("/**")
9 .excludePathPatterns("openApi/login")；
10 super.addInterceptors(registry);
11 }
12 }
3. 拦截流程
preHandle2 => preHandle1 => Controller => postHandle1 => postHandle2 => view rander => afterCompletion1 => afterCompletion2
4.应用场景
权限认证，日志记录，处理Cookie，本地化国际化，主题，性能监控
标签：拦截器,SpringBoot,实现,registry,public,addInterceptors From： https://www.cnblogs.com/uip001/p/16823939.html