Java代码实现获取XML字符串中的属性

String resultStr = <?xml version="1.0" encoding="utf-8" standalone="yes"?>

<msg version="1" resid="1" datetime="2016-05-19 17:00:56">

<return status="success"/>

</msg>

Document document = XmlUtil.getDocument(resultStr);

Element infoMsg = (Element) document.selectSingleNode("/msg");

String ResID = infoMsg.attributeValue("resid");

获取属性：infoMsg.attributeValue("datetime")