Merge branch 'master' of https://github.com/youseries/ureport

ureport2-core/src/main/java/com/bstek/ureport/Utils.java

@@ -159,6 +159,7 @@ public class Utils implements ApplicationContextAware{
 	}
 	
 	public static Object getProperty(Object obj,String property){
+		if(obj==null)return null;
 		try{
 			if(obj instanceof Map && property.indexOf(".")==-1){
 				Map<?,?> map=(Map<?,?>)obj;