springboot添加拦截器_代码

 

实现拦截器类

@Component
public class MyInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        System.out.println("pre");
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        System.out.println("after");
    }

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

    }
}

 

配置类中注册拦截器：

@Configuration
public class MyWebMvcConfigurerAdaptor extends WebMvcConfigurerAdapter {

    @Bean
    public WebMvcConfigurerAdapter webMvcConfigurerAdaptor() {
        WebMvcConfigurerAdapter adapter = new WebMvcConfigurerAdapter() {
            @Override
            public void addInterceptors(InterceptorRegistry registry) {
                registry.addInterceptor(new MyInterceptor()).addPathPatterns("/**").excludePathPatterns("/hi","hii");
            }
        };
        return adapter;

    }
}

访问： http://localhost:8080/hello 拦截器生效

 

 

注： webMvcConfigurerAdaptor 过时了