【学习】SpringBoot之自定义拦截器

/**
 * 自定义拦截器
 **/
@Configuration//声明这是一个拦截器
public class MyInterceptor extends WebMvcConfigurerAdapter {
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        HandlerInterceptor interceptor = new HandlerInterceptor() {
            @Override
            public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
                System.out.println("自定义拦截器......");
                return true;
            }
            @Override
            public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
                                   ModelAndView modelAndView) throws Exception {
            }

            @Override
            public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {

            }
        };
　　　　//添加到registry里 并设置要拦截的路径 “/**”表示全部拦截
        registry.addInterceptor(interceptor).addPathPatterns("/**");
    }
}