【fix sonar】SysPermissionDataRuleImpl文件

jero-boot/jero-boot-module-system/src/main/java/com/jero/modules/system/service/impl/SysPermissionDataRuleImpl.java

@@ -1,5 +1,6 @@
 package com.jero.modules.system.service.impl;
 
+import java.util.Collections;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
@@ -62,7 +63,7 @@ public class SysPermissionDataRuleImpl extends ServiceImpl<SysPermissionDataRule
 		List<String> idsList = this.baseMapper.queryDataRuleIds(username, permissionId);
 		//update-begin--Author:scott  Date:20191119  for：数据权限失效问题处理--------------------
 		if(idsList==null || idsList.isEmpty()) {
-			return null;
+			return Collections.emptyList();
 		}
 		//update-end--Author:scott  Date:20191119  for：数据权限失效问题处理--------------------
 		Set<String> set = new HashSet<>();
@@ -78,7 +79,7 @@ public class SysPermissionDataRuleImpl extends ServiceImpl<SysPermissionDataRule
 			}
 		}
 		if(set.isEmpty()) {
-			return null;
+			return Collections.emptyList();
 		}
 		return this.baseMapper.selectList(new QueryWrapper<SysPermissionDataRule>().in("id", set).eq("status",CommonConstant.STATUS_1));
 	}