springBoot 配置拦截器

step1: 自定义拦截器

/**
 * 自定义拦截器
 */
public class MyInterceptor implements HandlerInterceptor {

    private static final Logger logger = LoggerFactory.getLogger(MyInterceptor.class);

    /**
     * 在请求匹配controller之前执行，返回true才行进行下一步
     * @param request
     * @param response
     * @param handler
     * @return
     * @throws Exception
     */
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        return false;
    }

    /**
     * 已经执行完controller了，但是还没有进入视图渲染
     * @param request
     * @param response
     * @param handler
     * @param modelAndView
     * @throws Exception
     */
    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
    }

    /**
     * 视图也渲染完了，此时我可以做一些清理工作了
     * @param request
     * @param response
     * @param handler
     * @param ex
     * @throws Exception
     */
    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
    }
}
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step2：配置拦截器

@Configuration
public class MyInterceptorCon
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