十三，SpringBoot-全局异常处理器

 springboot自定义拦截器，需要继承WebMvcConfigurerAdapter并重写addInterceptors。

======以下仅为示例，代码沿用上一章=====

具体实现如下：

①创建MyInterceptor.java文件

@Configuration //声明配置
public class MyInterceptor extends WebMvcConfigurerAdapter {
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        HandlerInterceptor interceptor = new HandlerInterceptor() {
            @Override
            public boolean preHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o) throws Exception {

                System.out.println("拦截器启动:"+httpServletRequest.getRequestURL());

                return false;
            }

            @Override
            public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, ModelAndView modelAndView) throws Exception {

            }

            @Override
            public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) throws Exception {

            }
        };

        //addPathPatterns 需要拦截的路由，excludePathPatterns不需要拦截的路由
        registry.addInterceptor(interceptor).addPathPatterns("/**").excludePathPatterns("/login");
    }
}

其中@Configuration 注解是必须的。

②，启动类中配置@SpringBootApplication。（我的拦截器写在webdev.interceptor下）

编辑

③，Controller

@RestController
public class WcbDevController {

    @RequestMapping("/getPerInfo")
    public Object getPerInfo(){
        PersonModel personModel = new PersonModel();
        personModel.setBirthday(new Date());
        personModel.setNickName("不要喷香水");
        return personModel;
    }

    @RequestMapping("/login")
    public Object  login(){
        JSONObject mav = new JSONObject();
        mav.put("status",true);
        mav.put("msg","登录");
        return mav;
    }

④，启动项目，分别访问查看结果（请自行验证，这里就不截图了！）