添加

src/main/java/com/unissoft/MyConstant.java

@@ -28,7 +28,7 @@ public class MyConstant {
     public static final int TWO = 2;
     public static final int THREE = 3;
     public static final int FOUR = 4;
-
+    public static final String ONE_STR = "1";
 
     public static final String TEN = "10";
     public static final String TWENTY = "20";