Spring-boot 使用HandlerInterceptor拦截器

public class MyHandlerInterceptor implements HandlerInterceptor {
    //在Controller执行之前调用，如果返回false，controller不执行
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        System.out.println("---------preHandle--------");
        return true;
    }

    //controller执行之后，且页面渲染之前调用
    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        System.out.println("---------postHandle--------");
    }

    //页面渲染之后调用，一般用于资源清理操作
    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        System.out.println("---------afterCompletion--------");
    }
}

@Configuration
public class MyWebMvcConfigurerAdapter implements WebMvcConfigurer {
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(new MyHandlerInterceptor());
    }
}

@RestController
public class WebController {
    @GetMapping("/login")
    public String login() {
        System.out.println("-----login------");
        return "login";
    }
}

---------preHandle--------
-----login------
---------postHandle--------
---------afterCompletion--------