SpringBoot的拦截器实现和SpringMVC一致，通过配置把拦截器注入到Spring容器中去; 但配置方式不一样，

一、新建两个拦截器类

第一个拦截器类

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");
    }
}

第二个拦截器类

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 MyInterceptorTwo 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");
    }
}

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/**");
    }
}

前方小坑，请注意：
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；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