Question

如何用最简单的方法删除xml文件下指定节点的全部内容

Answer 1

InputStream is = new FileInputStream("D://dom4j.xml");
SAXReader reader = new SAXReader();
Document doc = reader.read(is);
doc.normalize();
Node node = doc.selectSingleNode("/datas/*");//查找datas下的第一个子结点的内空
node.getParent().remove(node);

OutputFormat outformat = OutputFormat.createPrettyPrint();
// xml自身的编码
outformat.setEncoding(doc.getXMLEncoding());
outformat.setIndent(true);

File targetFile = new File("D:/dom4j3.xml");
// 将xmlStr输出到目标路径，使用xml文件的头文件编码
OutputStream out = new FileOutputStream(targetFile);
XMLWriter writer = new XMLWriter(out, outformat);
// 是否转义特殊字符，默认true转义，false表示不转义
writer.setEscapeText(false);
writer.write(doc);
writer.flush();