我使用下面的代码来写入 XML 文件,但每次运行此函数时,信息都会附加到 XML 文件中,而不是重写。
我应该更改什么才能重写文件而不是每次都附加信息?
这是函数:
public void write2file(LinkedList<Customer> customers, File ff) {
try {
DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder();
Document document = documentBuilder.parse(ff);
Element root = document.getDocumentElement();
// Root Element
Element rootElement = document.getDocumentElement();
for (Customer i : customers) {
// server elements
Element new_marker = document.createElement("Marker");
rootElement.appendChild(new_marker);
Element name = document.createElement("title");
name.appendChild(document.createTextNode(i.getTitle()));
new_marker.appendChild(name);
Element loc = document.createElement("site_location");
loc.appendChild(document.createTextNode(i.getLocation()));
new_marker.appendChild(loc);
Element latitude = document.createElement("latitude");
latitude.appendChild(document.createTextNode(i.getLatitude()));
new_marker.appendChild(latitude);
Element longitude = document.createElement("longitude");
longitude.appendChild(document.createTextNode(i.getLongitude()));
new_marker.appendChild(longitude);
Element status = document.createElement("status");
status.appendChild(document.createTextNode(i.getStatus()));
new_marker.appendChild(status);
root.appendChild(new_marker);
}
DOMSource source = new DOMSource(document);
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
StreamResult result = new StreamResult(ff);
transformer.transform(source, result);
}
catch (SAXException e) {
e.printStackTrace();}
catch (IOException e) {
e.printStackTrace();}
catch (ParserConfigurationException pce) {
pce.printStackTrace();}
catch (TransformerException tfe) {
tfe.printStackTrace();}
}
最佳答案
不要直接给出文件作为 StreamResult 的参数,而是尝试给出 FileOutputStream,它可以接受构造函数参数是否追加。
new StreamResult(new FileOutputStream(ff, false));
关于java - 重写而不是附加到 XML 文件,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/20686800/