java 通过XPath从XML获取值

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    public String fromXPathExpression(String text, String xpathExpression) {
        InputSource source = new InputSource(new StringReader(text));
        XPathFactory xpathFactory = XPathFactory.newInstance();
        XPath xpath = xpathFactory.newXPath();
        return (String) xpath.evaluate(xpathExpression, source, XPathConstants.STRING);
    }

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