修复 完全更新sql 为null的字段也更新替换掉了原有的""字段,

导致更新过的字段都认为配置了字典类型

ruoyi-modules/ruoyi-gen/src/main/resources/mapper/generator/GenTableColumnMapper.xml

@@ -92,20 +92,20 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
     <update id="updateGenTableColumn" parameterType="GenTableColumn">
         update gen_table_column
         <set>
-            column_comment = #{columnComment},
-            column_type = #{columnType},
-            java_type = #{javaType},
-            java_field = #{javaField},
-            is_insert = #{isInsert},
-            is_edit = #{isEdit},
-            is_list = #{isList},
-            is_query = #{isQuery},
-            is_required = #{isRequired},
-            query_type = #{queryType},
-            html_type = #{htmlType},
-            dict_type = #{dictType},
-            sort = #{sort},
-            update_by = #{updateBy},
+            <if test="columnComment != null and columnComment != ''">column_comment = #{columnComment},</if>
+            <if test="columnType != null and columnType != ''">column_type = #{columnType},</if>
+            <if test="javaType != null and javaType != ''">java_type = #{javaType},</if>
+            <if test="javaField != null and javaField != ''">java_field = #{javaField},</if>
+            <if test="isInsert != null and isInsert != ''">is_insert = #{isInsert},</if>
+            <if test="isEdit != null and isEdit != ''">is_edit = #{isEdit},</if>
+            <if test="isList != null and isList != ''">is_list = #{isList},</if>
+            <if test="isQuery != null and isQuery != ''">is_query = #{isQuery},</if>
+            <if test="isRequired != null and isRequired != ''"> is_required = #{isRequired},</if>
+            <if test="queryType != null and queryType != ''"> query_type = #{queryType},</if>
+            <if test="htmlType != null and htmlType != ''"> html_type = #{htmlType},</if>
+            <if test="dictType != null and dictType != ''"> dict_type = #{dictType},</if>
+            <if test="sort != null and sort != ''"> sort = #{sort},</if>
+            <if test="updateBy != null and updateBy != ''"> update_by = #{updateBy},</if>
             update_time = sysdate()
         </set>
         where column_id = #{columnId}