fix an issue.(batch query)

src/main/java/cn/quantgroup/xyqb/model/UserBean.java

@@ -43,6 +43,7 @@ public class UserBean {
 
     public static List<UserBean> from(List<User> userList, List<WechatUserInfo> wechatUserInfoList) {
         List<UserBean> result = new ArrayList<>();
+        if (CollectionUtils.isNotEmpty(userList)) {
             userList.forEach(user -> {
                 UserBean userBean = new UserBean();
                 userBean.setUserId(user.getId());
@@ -63,7 +64,7 @@ public class UserBean {
                 }
                 result.add(userBean);
             });
-
+        }
         return result;
     }
 }