bugFix 解决为null 时结果不展示的问题

cx-knowledge-base/cx-knowledge-base-common/src/main/resources/mybatis/KbKnowledgebaseSearchKeywordsDao.xml

@@ -38,19 +38,23 @@
     </select>
     <sql id="kbSQL">
         SELECT
-            kkl.ID AS dataId,
-            sm.ID AS menuId,
-            sm.NAME AS menuName,
-            sm.PID AS systemId,
-            '07f7a17323be40bb96c292b80631a5a2' AS pagePartId,
-            kkl.CREATEDATE AS createDate,
-            '' AS systemName,
-            CONCAT( "存放目录: ", kkl.REMARK,  "-@-", "标题: ", kkl.TITLE, "-@-", "创建人: ", kkl.CREATEUSERNAME,"-@-","附件: ", kkl.ANNEX ) AS searchResult
+        kkl.ID AS dataId,
+        sm.ID AS menuId,
+        sm.NAME AS menuName,
+        sm.PID AS systemId,
+        '07f7a17323be40bb96c292b80631a5a2' AS pagePartId,
+        kkl.CREATEDATE AS createDate,
+        '' AS systemName,
+        CONCAT( "存放目录: ", ifnull(kkl.REMARK,""), "-@-",
+            "标题: ",ifnull(kkl.TITLE,""), "-@-",
+            "创建人: ", ifnull(kkl.CREATEUSERNAME,""),"-@-",
+            "附件: ", ifnull(kkl.ANNEX,"") ) AS
+        searchResult
         FROM
-            kb_knowledge_ledger kkl
-                INNER JOIN sys_module sm ON sm.ID = 'b03686d4b8b54b96a6d310be8bd925a4'
+        kb_knowledge_ledger kkl
+        INNER JOIN sys_module sm ON sm.ID = 'b03686d4b8b54b96a6d310be8bd925a4'
         WHERE
-            kkl.DELETED = '0'
+        kkl.DELETED = '0'
         <bind name="pattern" value="'%' + searchContent + '%'"/>
         and kkl.TITLE like #{pattern}
     </sql>
@@ -72,7 +76,7 @@
                     '' AS systemName,
                     <foreach collection="searchVo.columnInfoList" item="columnInfo" separator=', "-@-",' open="CONCAT("
                              close=")">
-                        #{columnInfo.columnDesc},": ",a.${columnInfo.columnName}
+                        #{columnInfo.columnDesc},": ",ifnull(a.${columnInfo.columnName},"")
                     </foreach>
                     as searchResult
                     from (${searchVo.tableSql}) a
@@ -118,7 +122,7 @@
                     '' AS systemName,
                     <foreach collection="searchVo.columnInfoList" item="columnInfo" separator=', "-@-",' open="CONCAT("
                              close=")">
-                        #{columnInfo.columnDesc},": ",a.${columnInfo.columnName}
+                        #{columnInfo.columnDesc},": ",ifnull(a.${columnInfo.columnName},"")
                     </foreach>
                     as searchResult
                     from (${searchVo.tableSql}) a