修复使用透明底png图片时，自动填充黑色背景

RuoYi

2022-10-28 6421f68964fe242a682557651b1ae94dbb656c81

 ruoyi-common/ruoyi-common-core/src/main/java/com/ruoyi/common/core/exception/ServiceException.java

@@ -49,6 +49,7 @@
        return detailMessage;
    }

    @Override
    public String getMessage()
    {
        return message;