我将使用Java的XML文档库。有点混乱，但是可以。
String xml = "<response>n" + "<returnCode>-2</returnCode>n" + "<error>n" + "<errorCode>100</errorCode>n" + "<errorMessage>ERROR HERE!!!</errorMessage>n" + "</error>n" + "</response>";document doc = documentBuilderFactory.newInstance() .newdocumentBuilder() .parse(new InputSource(new StringReader(xml)));NodeList errNodes = doc.getElementsByTagName("error");if (errNodes.getLength() > 0) { Element err = (Element)errNodes.item(0); System.out.println(err.getElementsByTagName("errorMessage") .item(0) .getTextContent());} else { // success}
