diff --git a/WebContent/AppConfig/AutoRiskDetect/ScenarioAlarm.jsp b/WebContent/AppConfig/AutoRiskDetect/ScenarioAlarm.jsp
index 7856a51f7..a49ad75c1 100644
--- a/WebContent/AppConfig/AutoRiskDetect/ScenarioAlarm.jsp
+++ b/WebContent/AppConfig/AutoRiskDetect/ScenarioAlarm.jsp
@@ -13,9 +13,7 @@
 	String sBizArg = CurPage.getParameter("BizArg");
 	String [] bizArr = sBizArg.split(",");
 
-	String ProjectNo="";
-	String gpsVendor="";
-	String sourceType="";
+	String ProjectNo=null,gpsVendor=null,sourceType=null;
 	for(int i=0;i<bizArr.length;i++){
 		if(bizArr[i].contains("ObjectNo=")){
 			String [] biz2 = bizArr[i].split("=");