dns更新的接口通过域名访问

@@ -232,7 +232,7 @@ public class OuterIntfCtrl {
 	public String dnsJustForShellUpdate( String cloud,  String record, String value) {
 		String domain="yohoops.org";
 		String operate="update";
-		String type=null;
+		String type="";
 		return this.dnsJustForShell(domain,cloud,type,operate,record,value);
 	}
 
@@ -241,7 +241,7 @@ public class OuterIntfCtrl {
 	public String dnsJustForShellCommit( String cloud) {
 		String domain="yohoops.org";
 		String operate="commit";
-		return this.dnsJustForShell(domain,cloud,null,operate,null,null);
+		return this.dnsJustForShell(domain,cloud,"",operate,"","");
 	}