8、修改节点属性
public static void modifyXMLFile() {
String ldStr = "c:/text.xml";
String newStr = "c:/text1.xml";
Document document = null;
//修改节点的属性
try {
SAXReader saxReader = new SAXReader(); // 用来读取xml文档
document = saxReader.read(new File(oldStr)); // 读取xml文档
List list = document.selectNodes("/books/book/@show");// 用xpath查找节点book的属性
Iterator iter = list.iterator();
while (iter.hasNext()) {
Attribute attribute = (Attribute) iter.next();
if (attribute.getValue().equals("yes"))
attribute.setValue("no");
}
} catch (Exception e) {
e.printStackTrace();
}
//修改节点的内容
try {
SAXReader saxReader = new SAXReader(); // 用来读取xml文档
document = saxReader.read(new File(oldStr)); // 读取xml文档
List list = document.selectNodes("/books/book/title");// 用xpath查找节点book的内容
Iterator iter = list.iterator();
while (iter.hasNext()) {
Element element = (Element) iter.next();
element.setText("xxx");// 设置相应的内容
}
} catch (Exception e) {
e.printStackTrace();
}
//把结果写回新的文件中
try {
XMLWriter writer = new XMLWriter(new FileWriter(new File(newStr)));
writer.write(document);
writer.close();
} catch (Exception ex) {
ex.printStackTrace();
}
}
9、删除节点
public static void removeNode() {
String ldStr = "c:/text.xml";
String newStr = "c:/text1.xml";
Document document = null;
try {
SAXReader saxReader = new SAXReader();// 用来读取xml文档
document = saxReader.read(new File(oldStr));// 读取xml文档
List list = document.selectNodes("/books/book");// 用xpath查找对象
Iterator iter = list.iterator();
while (iter.hasNext()) {
Element bookElement = (Element) iter.next();
// 创建迭代器，用来查找要删除的节点,迭代器相当于指针，指向book下所有的title节点
Iterator iterator = bookElement.elementIterator("title");
while (iterator.hasNext()) {
Element titleElement = (Element) iterator.next();
if (titleElement.getText().equals("ajax in action")) {
bookElement.remove(titleElement);
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
try {
XMLWriter writer = new XMLWriter(new FileWriter(new File(newStr)));
writer.write(document);
writer.close();
} catch (Exception ex) {
ex.printStackTrace();
}
}
