session过期之后不能登出

tuoheng-system/src/main/java/com/tuoheng/system/filter/ShiroLoginFilter.java

 import com.alibaba.fastjson.JSONObject;
 import com.tuoheng.common.utils.JsonResult;
 import org.apache.shiro.web.filter.authc.FormAuthenticationFilter;
+import org.springframework.http.HttpStatus;
 
 import javax.servlet.ServletRequest;
 import javax.servlet.ServletResponse;
         httpServletResponse.setCharacterEncoding("UTF-8");
         httpServletResponse.setContentType("application/json");
         JsonResult jsonResult = new JsonResult();
-        httpServletResponse.getWriter().write(JSONObject.toJSON(jsonResult.error(401, "请先登录")).toString());
+        httpServletResponse.getWriter().write(JSONObject.toJSON(jsonResult.error(HttpStatus.UNAUTHORIZED.value(), "请先登录")).toString());
         return false;
     }
 }

tuoheng-system/src/main/java/com/tuoheng/system/utils/ShiroUtils.java

 package com.tuoheng.system.utils;
 
+import cn.hutool.core.util.ObjectUtil;
 import com.tuoheng.common.exception.ServiceException;
 import com.tuoheng.common.utils.SpringUtils;
 import com.tuoheng.system.entity.User;
      * @return
      */
     public static User getUserInfo() {
-        return (User) SecurityUtils.getSubject().getPrincipal();
+        User user = (User) SecurityUtils.getSubject().getPrincipal();
+        if(ObjectUtil.isEmpty(user)){
+            throw new ServiceException(HttpStatus.UNAUTHORIZED.value(), "请先登录");
+        }
+        return user;
     }
 
     /**
      *
      * @return
      */
-    public static Integer getUserId() {
+    public static Integer getUserId() throws ServiceException {
         User user = getUserInfo();
+        if(ObjectUtil.isEmpty(user)){
+            throw new ServiceException(HttpStatus.UNAUTHORIZED.value(), "请先登录");
+        }
         return Optional.ofNullable(user.getId()).orElseThrow(() ->
                 new ServiceException(HttpStatus.BAD_REQUEST.value(), "未获取到当前用户信息!"));
     }
      */
     public static Integer getTenantId() {
         User user = getUserInfo();
+        if(ObjectUtil.isEmpty(user)){
+            throw new ServiceException(HttpStatus.UNAUTHORIZED.value(), "请先登录");
+        }
         return Optional.ofNullable(user.getTenantId()).orElseThrow(() ->
                 new ServiceException(HttpStatus.BAD_REQUEST.value(), "未获取到当前租户信息!"));
     }