add isError and isSuccess method

RuoYi

2022-09-12 07dda8f5d6315e5c373ac04ee32a97ea61f941d1

 src/main/java/com/ruoyi/common/constant/Constants.java

@@ -20,6 +20,11 @@
    public static final String GBK = "GBK";



    /**

     * www主域

     */

    public static final String WWW = "www.";



    /**

     * http请求

     */

    public static final String HTTP = "http://";