fix(系统设置): 修复修改个人信息邮箱时可修改为已存在邮箱的问题

backend/src/main/java/io/metersphere/service/UserService.java

@@ -318,6 +318,17 @@ public class UserService {
     }
 
     public void updateUser(User user) {
+        // todo 提取重复代码
+        if (StringUtils.isNotBlank(user.getEmail())) {
+            UserExample example = new UserExample();
+            UserExample.Criteria criteria = example.createCriteria();
+            criteria.andEmailEqualTo(user.getEmail());
+            criteria.andIdNotEqualTo(user.getId());
+            if (userMapper.countByExample(example) > 0) {
+                MSException.throwException(Translator.get("user_email_already_exists"));
+            }
+        }
+
         user.setUpdateTime(System.currentTimeMillis());
         userMapper.updateByPrimaryKeySelective(user);
         // 禁用用户之后，剔除在线用户