新增方法

project-order/src/main/java/com/dituhui/pea/order/common/ListUtils.java

@@ -6,4 +6,8 @@ public class ListUtils {
 	public static <T> boolean isNotEmpty(List<T> list) {
 		return list != null && !list.isEmpty();
 	}
+
+	public static <T> boolean isEmpty(List<T> list) {
+		return list == null || list.isEmpty();
+	}
 }