Merge pull request wistbean#1 from WEHOOK/master

fix(查询用户):修改用户查询不到时的代码判断逻辑  Update UserServiceImpl.java

Author: wistbean

manong_manager/manong_manager_service/src/main/java/com/manong/service/impl/UserServiceImpl.java

@@ -27,7 +27,7 @@ public User getUserById(Integer id) {
 
         List<User> userList = userMapper.selectByExample(userExample);
 
-        if(userList!=null){
+        if(userList.size() != 0|| !userList.isEmpty()){
             return userList.get(0);
         }