[用户管理][修改][用户名查询]

mallinkService/src/main/resources/mapper/MallUserInfoMapper.xml

@@ -36,8 +36,8 @@
         <if test=" null != tenantId ">
             and `tenant_id` = #{tenantId}
         </if>
-
-        <if test=" null != username ">
+	
+	    <if test=" null != username and ''!=username">
             and `username` like concat('%', #{username},'%')
         </if>