1.自定义一个拦截器

import lombok.extern.slf4j.Slf4j;
import org.springframework.lang.Nullable;
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;

/**
 * @Author Jack
 * @Date 2019/2/2 10:37
 * @Version 1.0.0
 */
@Slf4j
@Component
public class MyInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        log.info("== preHandle ==");
        return true;
    }
    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, @Nullable ModelAndView modelAndView) throws Exception {
        log.info("== postHandle ==");
    }
    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, @Nullable Exception ex) throws Exception {
        log.info("== afterCompletion ==");
    }
}

2.配置拦截器

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

/**
 * @Author Jack
 * @Date 2019/2/2 10:43
 * @Version 1.0.0
 */
@Configuration
public class MyWebMvcConfigurer implements WebMvcConfigurer {
    private final MyInterceptor myInterceptor;

    @Autowired
    public MyWebMvcConfigurer(MyInterceptor myInterceptor) {
        this.myInterceptor = myInterceptor;
    }

    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(myInterceptor).addPathPatterns("/**");
    }
}