更新用户签字图片

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

@@ -205,7 +205,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
  			<if test="loginDate != null">login_date = #{loginDate},</if>
  			<if test="updateBy != null and updateBy != ''">update_by = #{updateBy},</if>
  			<if test="remark != null">remark = #{remark},</if>
- 			<if test="signaturePicture != null">signature_picture = #{signaturePicture},</if>
+ 			<if test="signaturePicture != null and signaturePicture != ''">signature_picture = #{signaturePicture},</if>
  			update_time = sysdate()
  		</set>
  		where user_id = #{userId}