增加商品条码功能

src/main/java/com/jsh/erp/utils/StringUtil.java

@@ -148,6 +148,13 @@ public class StringUtil {
         return new String[0];
     }
 
+    public static Long[] listToLongArray(List<Long> list) {
+        if (list != null && !list.isEmpty()) {
+            return list.toArray(new Long[list.size()]);
+        }
+        return new Long[0];
+    }
+
     public static List<String> stringToListArray(String[] strings) {
         if (strings != null && strings.length > 0) {
             return Arrays.asList(strings);
@@ -223,6 +230,19 @@ public class StringUtil {
         return value;
     }
 
+    public static boolean isExist(Object value) {
+        if(value!=null) {
+            String str = value.toString();
+            if("".equals(str.trim())) {
+                return false;
+            } else {
+                return true;
+            }
+        } else {
+            return false;
+        }
+    }
+
     public static void main(String[] args) {
         int i = 10/3;
         System.out.println(i);