SpringBoot攔截器

最近專案中有一個需求，對來訪的請求，進行計算，記錄下業務處理時間。Spring Boot專案中使用攔截器，超級簡單，再次說明一下用法。相信大家一看便懂。

1.繼承 HandlerInterceptor 實現具體的處理邏輯

public interface HandlerInterceptor {
    boolean preHandle(HttpServletRequest var1, HttpServletResponse var2, Object var3) throws Exception; //是否放行

    void postHandle(HttpServletRequest var1, HttpServletResponse var2, Object var3, ModelAndView var4) throws
 
 Exception; //處理結束

    void afterCompletion(HttpServletRequest var1, HttpServletResponse var2, Object var3, Exception var4) throws Exception; //在處理結束後執行，最後執行的方法
}

以下是我的處理邏輯

/**
 * @Package: foxlife.base.interceptor
 * @Description: 處理時間攔截器，記錄下，介面處理時間
 * @author: liuxin
 * @date: 17/2/22 上午10:58
 */
@Component
 

public class ChanelInterceptor implements HandlerInterceptor {
    private static Logger logger = LoggerFactory.getLogger(ChanelInterceptor.class);

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object o) throws Exception {
        logger.info("============================攔截器啟動=============================="
 
);
        request.setAttribute("starttime",System.currentTimeMillis());
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object o, ModelAndView modelAndView) throws Exception {
        logger.info("===========================執行處理完畢=============================");
        long starttime = (long) request.getAttribute("starttime");
        request.removeAttribute("starttime");
        long endtime = System.currentTimeMillis();
        logger.info("============請求地址："+request.getRequestURI()+"：處理時間：{}",(endtime-starttime)+"ms");
    }

    @Override
    public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) throws Exception {
        logger.info("============================攔截器關閉==============================");
    }
}

2.配置攔截器到應用中

/**
 * @Package: foxlife.base.config
 * @Description: 配置攔截器
 * @author: liuxin
 * @date: 17/2/22 上午11:04
 */
@Configuration
public class MyInterceptorConfig extends WebMvcConfigurerAdapter{
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(new ChanelInterceptor()).addPathPatterns("/**");
    }
}

3.演示

2017-02-23 15:40:43.619  INFO 64568 --- [io-31024-exec-3] f.base.interceptor.ChanelInterceptor     : ============================攔截器啟動==============================
2017-02-23 15:40:43.621  INFO 64568 --- [io-31024-exec-3] f.base.interceptor.ChanelInterceptor     : ===========================執行處理完畢=============================
2017-02-23 15:40:43.621  INFO 64568 --- [io-31024-exec-3] f.base.interceptor.ChanelInterceptor     : ============請求地址：/error：處理時間：2ms
2017-02-23 15:40:43.621  INFO 64568 --- [io-31024-exec-3] f.base.interceptor.ChanelInterceptor     : ============================攔截器關閉==============================