部分字段设置可修改为空

ruoyi-system/src/main/resources/mapper/system/SysConfigMapper.xml

@@ -92,7 +92,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
             <if test="configValue != null and configValue != ''">config_value = #{configValue},</if>
             <if test="configType != null and configType != ''">config_type = #{configType},</if>
             <if test="updateBy != null and updateBy != ''">update_by = #{updateBy},</if>
-            <if test="remark != null and remark != ''">remark = #{remark},</if>
+            <if test="remark != null">remark = #{remark},</if>
  			update_time = sysdate()
         </set>
         where config_id = #{configId}