[英]Replace data in XML File in Java
我正在嘗試更換
<photo>dummy.jpg</photo>
有了這個
<photo>NewImage_2012-03-22:15.00.00.jpg</photo>
代碼看起來像這樣
Element nameElement = (Element) fstNode;
NodeList nameElemList = nameElement.getElementsByTagName("photo");
Element firstElement = (Element) nameElemList.item(0);
NodeList fstNm = firstElement.getChildNodes();
Text newData = doc.createTextNode("NewImage_2012-03-22:15.00.00.jpg");
firstElement.replaceChild(newData, fstNm.item(0));
System.out.println("Data : " +
firstElement.getChildNodes().item(0).getNodeValue());
在輸出中,它會打印新的照片名稱,但不會替換xml文件中的數據。 我想念什么?
謝謝。
使用DocumentTraversal,NodeIterator替換字符串。
DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder = docFactory.newDocumentBuilder();
Document doc = docBuilder.parse("/home/riddhish/developerworkspace/SplitString/src/com/updatexmlwithjava/file.xml");
DocumentTraversal traversal = (DocumentTraversal) doc;
Node a = doc.getDocumentElement();
System.out.println("Chield node length ="+a.getChildNodes().getLength());
NodeIterator iterator = traversal.createNodeIterator(a, NodeFilter.SHOW_ELEMENT, null, true);
Element b = null;
for (Node n = iterator.nextNode(); n != null; n = iterator.nextNode()) {
Element e = (Element) n;
if ("parent tag".equals(e.getTagName())) {
System.out.println(""+e.getTagName() +" "+ e.getTextContent());
b = e;
} else if ("photo".equals(e.getTagName()) && "dummy.jpg".equals(e.getTextContent()) && b != null) {
e.setTextContent("NewImage_2012-03-22:15.00.00.jpg");
//a.removeChild(b);
}
}
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