SpringBoot 登陆拦截器

最近在用SpringBoot做项目，SpringBoot的拦截器研究了一番，做个记录

import com.qishimai.website.interceptor.MyInterceptor;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

import java.util.Arrays;

/**
 * @author junbiao
 * @date 2018年8月20日 下午4:15:32
 */
@Configuration
public class WebMvcConfiguration implements WebMvcConfigurer {

    private final Logger logger = LoggerFactory.getLogger(WebMvcConfiguration.class);

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/static/**").addResourceLocations("classpath:/static/");
    }

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        logger.info("add interceptors");
        registry.addInterceptor(new MyInterceptor()).excludePathPatterns(Arrays.asList("/login","/static/**"));
    }

}

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
public class MyInterceptor implements HandlerInterceptor {
    Logger logger = LoggerFactory.getLogger(MyInterceptor.class);
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
            throws Exception {
        // TODO Auto-generated method stub
        //获取session
        HttpSession session = request.getSession(true);
        //判断用户ID是否存在，不存在就跳转到登录界面
        if(session.getAttribute("userId") == null){
            logger.info("------:跳转到login页面！");
            response.sendRedirect(request.getContextPath()+"/login");
            return false;
        }else{
            session.setAttribute("userId", session.getAttribute("userId"));
            return true;
        }
    }
    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
                           ModelAndView modelAndView) throws Exception {
        // TODO Auto-generated method stub
    }
    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)
            throws Exception {
        // TODO Auto-generated method stub
    }
}

主要解决了静态文件被拦截的问题