Java：XML Parser [英] Java:XML Parser

问题描述

我有类似这样的响应XML -

I have a response XML something like this -

<Response> <aa> <Fromhere> <a1>Content</a1> <a2>Content</a2> </Fromhere> </aa> </Response>

我想从< Fromhere> 到< / Fromhere> 。可以通过任何字符串函数或XML解析器来实现吗？

I want to extract the whole content from <Fromhere> to </Fromhere> in a string. Is it possible to do that through any string function or through XML parser?

请建议。

推荐答案

您可以尝试使用XPath方法简化XML解析：

You could try an XPath approach for simpleness in XML parsing:

InputStream response = new ByteArrayInputStream("<Response> <aa> "
        + "<Fromhere> <a1>Content</a1> <a2>Content</a2> </Fromhere> "
        + "</aa> </Response>".getBytes()); /* Or whatever. */

DocumentBuilder builder = DocumentBuilderFactory
        .newInstance().newDocumentBuilder();
Document doc = builder.parse(response);

XPath xpath = XPathFactory.newInstance().newXPath();
XPathExpression expr = xpath.compile("string(/Response/aa/FromHere)");
String result = (String)expr.evaluate(doc, XPathConstants.STRING);

请注意，我还没有尝试过此代码。可能需要调整。

Note that I haven't tried this code. It may need tweaking.

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