spring-boot 拦截器

1.构建拦截器

必须实现HandlerInterceptor接口，

接口包括afterCompletion(controller执行完毕执行的方法)方法，preHandle(controller执行前执行的方法)，postHandle(controller执行前执行的方法)

@Component
public class SelfInterceptor implements HandlerInterceptor {

    public ResourceAuthInterceptor(){

        System.out.println("constuct");

    }

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {

        String path = request.getRequestURI();

        System.out.println(path);


        HandlerMethod method = (HandlerMethod)handler;

        String mapping = method.getMethod().getAnnotation(RestController.class).value();


        return true;
    }

}

2.注册拦截器

@Configuration
public class InterceptorConfig extends WebMvcConfigurerAdapter {

    @Autowired
    private SelfInterceptor interceptor;

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(interceptor).addPathPatterns("/**");
        super.addInterceptors(registry);
    }

}