R add isError and isSuccess method

RuoYi

2022-09-12 f5bec709111dcf7a2d9900b19e8b8c5b1162c55c

 ruoyi-common/src/main/java/com/ruoyi/common/core/domain/R.java

@@ -102,4 +102,14 @@
    {
        this.data = data;
    }

    public Boolean isError()
    {
        return !isSuccess();
    }

    public Boolean isSuccess()
    {
        return R.SUCCESS == getCode();
    }
}