我有以下的xml字符串
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<Structure>
<LongUnsigned value="142794"/>
<OctetString value="07E2051E030F1E0404800000"/>
<Structure>
<OctetString value="07E2051E030F1E0404800000"/>
<OctetString value="66574536387"/>
<Array>
<Structure><OctetString value="0000000000000001"/><OctetString value="9889892347"/></Structure>
<Structure><OctetString value="00098347586768574"/><OctetString value="6283046502"/></Structure>
<Structure><OctetString value="0000011000000001"/><OctetString value="899734729847586"/></Structure>
</Array>
</Structure>
</Structure>
我正在使用下面的xpath,但它总是返回空字符串。
XPath xPath = XPathFactory.newInstance().newXPath();
try {
String eval = xPath.evaluate("//Structure/Structure/Array", new InputSource(new StringReader(xmlString)));
System.out.println("Eval:" + eval);
} catch (XPathExpressionException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
我在网上尝试运行此xpath,似乎可以正常工作。为什么在Java中它不能像预期的那样工作呢?
Document
和InputSource
作为字符串。该字符串实际上是从Document
实例生成的。 - thunderbird