SpringBoot系列<七>拦截器配置

骑猪看日落 2022-06-03 05:07 205阅读 0赞

SpringBoot的拦截器实现和SpringMVC一致，就是配置方式不一样，完成代码如下:

**一、新建两个拦截器类**

package com.jd.m.tg.interceptor;
    
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    import org.springframework.stereotype.Component;
    import org.springframework.web.servlet.HandlerInterceptor;
    import org.springframework.web.servlet.ModelAndView;
    
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    
    @Component
    public class MyInterceptor implements HandlerInterceptor { 
    
        private static final Logger LOG= LoggerFactory.getLogger(MyInterceptor.class);
    
        @Override
        public boolean preHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o) throws Exception {
            LOG.info("执行拦截器的preHandle方法");
            return true;
        }
    
        @Override
        public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, ModelAndView modelAndView) throws Exception {
            LOG.info("执行拦截器的postHandle方法");
        }
    
        @Override
        public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) throws Exception {
            LOG.info("执行拦截器的afterCompletion方法");
        }
    }

另一个拦截器类和该类内容一致；

**二、拦截器配置类**

package com.jd.m.tg.config;
    
    import com.jd.m.tg.interceptor.MyInterceptor;
    import com.jd.m.tg.interceptor.MyInterceptorTwo;
    import lombok.AllArgsConstructor;
    import org.springframework.context.annotation.Configuration;
    import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
    import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
    
    @Configuration
    @AllArgsConstructor
    public class InterceptorConfig extends WebMvcConfigurerAdapter{
    
        private MyInterceptor myInterceptor;
    
        private MyInterceptorTwo myInterceptorTwo;
    
        @Override
        public void addInterceptors(InterceptorRegistry registry) {
            registry.addInterceptor(myInterceptorTwo).addPathPatterns("/test/**");
            registry.addInterceptor(myInterceptor).addPathPatterns("/test/**");
        }
    }

> 拦截器的添加顺序就是执行顺序，如上所示，第一个拦截器是myInterceptorTwo，第二个拦截器是myInterceptor；

控制台执行日志如下：

c.jd.m.tg.interceptor.MyInterceptorTwo   : 执行拦截器的preHandle方法
    2017-12-19 11:18:50.237  INFO 8988 --- [0.0.1-80-exec-1] com.jd.m.tg.interceptor.MyInterceptor    : 执行拦截器的preHandle方法
    2017-12-19 11:18:50.255  INFO 8988 --- [0.0.1-80-exec-1] com.jd.m.tg.interceptor.MyInterceptor    : 执行拦截器的postHandle方法
    2017-12-19 11:18:50.255  INFO 8988 --- [0.0.1-80-exec-1] c.jd.m.tg.interceptor.MyInterceptorTwo   : 执行拦截器的postHandle方法
    2017-12-19 11:18:50.255  INFO 8988 --- [0.0.1-80-exec-1] com.jd.m.tg.interceptor.MyInterceptor    : 执行拦截器的afterCompletion方法
    2017-12-19 11:18:50.255  INFO 8988 --- [0.0.1-80-exec-1] c.jd.m.tg.interceptor.MyInterceptorTwo   : 执行拦截器的afterCompletion方法