Spring Boot 自定义Intercepter

在 SpringBoot2.X 中 ，WebMvcConfigurerAdapter 被deprecated ， 更好的做法是 implements WebMvcConfigurer

一、自定义拦截器

@Component
public class MyInterceptor implements HandlerInterceptor {

    /**
     * 进入controller层之前拦截请求
     * @param request
     * @param response
     * @param handler
     * @return
     */
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) {
        System.out.println("getContextPath:" + request.getContextPath());
        System.out.println("getServletPath:" + request.getServletPath());
        System.out.println("getRequestURI:" + request.getRequestURI());
        System.out.println("getRequestURL:" + request.getRequestURL());
        System.out.println("getRealPath:" + request.getSession().getServletContext().getRealPath("image"));
        return true;
    }


    /**
     * 处理请求完成后视图渲染之前的处理操作
     * @param request
     * @param response
     * @param handler
     * @param modelAndView
     */
    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) {

    }

    /**
     * 视图渲染之后的操作
     * @param request
     * @param response
     * @param handler
     * @param ex
     */
    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) {

    }
}

二、拦截器配置

@Configuration
public class WebConfig implements WebMvcConfigurer {

    @Bean
    public MyInterceptor myInterceptor(){
        return new MyInterceptor();
    }

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        //添加拦截路径和排除拦截路径
        registry.addInterceptor(myInterceptor()).addPathPatterns("/**").excludePathPatterns("/test");
    }
}