19_自定义拦截器

最新推荐文章于 2024-07-05 20:18:19 发布

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本文详细介绍了一种自定义Spring MVC拦截器的实现方法。通过继承HandlerInterceptor接口并覆盖其三个核心方法：preHandle用于请求处理前的操作；postHandle用于请求处理后的操作；afterCompletion用于整个请求完成后的操作。此实现可用于日志记录、权限验证等。

自定义拦截器

public class MyInterceptor implements HandlerInterceptor {

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

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) {
        log.debug("preHandle method is running");
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) {
        log.debug("postHandle method is running");
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) {
        log.debug("afterCompletion method is running");