代码生成模板调整，字段为String并且必填则加空串条件

RuoYi

2020-06-07 945fb282dd5c4c677fb0c30fe24b7df04ad857b0

 ruoyi-ui/src/views/system/user/profile/index.vue

@@ -33,7 +33,7 @@
              </li>

              <li class="list-group-item">

                <svg-icon icon-class="date" />创建日期

                <div class="pull-right">2018-08-23 09:11:56</div>

                <div class="pull-right">{{ user.createTime }}</div>

              </li>

            </ul>

          </div>