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我有以下Java代碼與XPath一起使用以從XML元素獲取數據。第一次在title
中表達式被消除時,它的工作原理應該如此。但下一次,在cost
中,只要我顯示cost
的值,它就是「無法獲得成本」。嘗試執行多個XPath表達式時是否缺少某些內容?XPath無法正常工作
XPathFactory factory = XPathFactory.newInstance();
XPath xpath = factory.newXPath();
XPathExpression exp;
InputSource inputSource = new InputSource(new StringReader(woot_xml));
title = "Could not get title";
cost = "Could not get cost";
try {
exp = xpath.compile("/rss/channel/item/title");
title = exp.evaluate(inputSource);
exp = xpath.compile("/rss/channel/item/pubDate");
cost = exp.evaluate(inputSource);
} catch (XPathExpressionException e) {
// Do nothing for now
}
這是XML我要關閉的:http://www.woot.com/salerss.aspx
那麼,XML是怎麼樣的? – 2010-11-25 23:54:48
嘗試過嗎?:// rss/channel/item/title和// rss/channel/item/pubDate(double //在開始處) – Steven 2010-11-25 23:54:55