XML.zip_xml

package cn.hh.xml; import org.dom4j.Document; import org.dom4j.DocumentHelper; import org.dom4j.Element; import org.dom4j.io.OutputFormat; import org.dom4j.io.SAXReader; import org.dom4j.io.XMLWriter; import java.io.*; import java.util.List; /** * @ClassName Dom4jXMLTest * @Description TODO * @Author 南浪小辉 * @Date 2018/6/23 9:35 * @Version 1.0 **/ public class Dom4jXMLTest { public static void main(String[] args) throws Exception { // 读取XML //reader(); // 添加XML节点 addXml(); // 修改节点数据 // modfiy(); // modfiy1(); // 删除节点 // delete(); // delete1(); } /** * 读取XML文件 */ public static void reader() throws Exception { // 创建读取器 SAXReader reader = new SAXReader(); // 读取xml文档 Document read = reader.read("lbl/NewFile.xml"); // 获取根节点 Element rootElement = read.getRootElement(); // 遍历根节点下的子节点信息 for (Object item : rootElement.elements()) { // 拿到子节点下的值 String text = ((Element) item).element("bookName").getText(); System.out.println(text); // 拿到当前节点的属性值 System.out.println(((Element) item).attribute("id").getText()); } } /** * 向XML文件添加节点 */ public static void addXml() throws Exception { // 创建读取器 SAXReader reader = new SAXReader(); // 读取xml文档 Document read = reader.read("lbl/NewFile.xml"); // 获取根节点 Element rootElement = read.getRootElement(); // 创建要添加的节点 Element createElement = DocumentHelper.createElement("book"); createElement.setAttributeValue("id", "003"); createElement.setAttributeValue("type", "测试数据"); // 创建添加的节点的3个子节点 Element createElement1 = DocumentHelper.createElement("bookName"); createElement1.setText("唔明书"); Element createElement2 = DocumentHelper.createElement("bookPrice"); createElement2.setText("20"); Element createElement3 = DocumentHelper.createElement("bookAuthor"); createElement3.setText("测试"); // 把3个子节点 添加到book节点下 createElement.add(createElement1); createElement.add(createElement2); createElement.add(createElement3); // 把book子节点添加到根节点下 rootElement.add(createElement); // 重新将XML写入硬盘 /*OutputStream ou = new FileOutputStream("lbl/NewFile.xml"); Writer wr = new OutputStreamWriter(ou, "utf-8");*/ XMLWriter writer=null; //自动换行 OutputFormat format=OutputFormat.createPrettyPrint(); writer =new XMLWriter(new FileWriter("lbl/NewFile.xml"),format); /*read.write(wr);*/ writer.write(rootElement); writer.close(); /*wr.close(); ou.close();*/ System.out.println("add ok"); } /** * 修改节点信息 */ public static void modfiy() throws Exception { // 创建读取器 SAXReader reader = new SAXReader(); // 读取xml文档 Document read = reader.read("lbl/NewFile.xml"); // 获取根节点 Element rootElement = read.getRootElement(); // 拿到要修改的节点 for (Object element : rootElement.elements()) { if (((Element) element).attribute("id").getText().equals("003")) { ((Element) element).element("bookName").setText("数据测试！"); break; } } /** * ((Element) element).element("bookName").setName("数据测试！");修改节点name名称 */ // 重新将XML写入硬盘 OutputStream ou = new FileOutputStream("lbl/NewFile.xml"); Writer wr = new OutputStreamWriter(ou, "utf-8"); read.write(wr); wr.close(); ou.close(); System.out.println("modfiy ok"); } /** * 修改节点信息方案二 Text */ public static void modfiy1() throws Exception { // 创建读取器 SAXReader reader = new SAXReader(); // 读取xml文档 Document read = reader.read("lbl/NewFile.xml"); // 获取根节点 Element rootElement = read.getRootElement(); // 拿到要修改的节点---方式二 Text true @SuppressWarnings("unchecked") List<Object> attributes = (rootElement.elements()); Element ment = (Element) attributes.get(1); ment.element("bookName").setText("青年测试"); // 重新将XML写入硬盘 OutputStream ou = new FileOutputStream("lbl/NewFile.xml"); Writer wr = new OutputStreamWriter(ou, "utf-8"); read.write(wr); wr.close(); ou.close(); System.out.println("modfiy ok"); } /** * 删除节点信息 */ public static void delete() throws Exception { // 创建读取器 SAXReader reader = new SAXReader(); // 读取xml文档 Document read = reader.read("lbl/NewFile.xml"); // 获取根节点 Element rootElement = read.getRootElement(); // 拿到要修改的节点 for (Object element : rootElement.elements()) { if (((Element) element).attribute("id").getText().equals("003")) { rootElement.remove(((Element) element)); break; } } // 重新将XML写入硬盘 OutputStream ou = new FileOutputStream("lbl/NewFile.xml"); Writer wr = new OutputStreamWriter(ou, "utf-8"); read.write(wr); wr.close(); ou.close(); System.out.println("delete ok"); } /** * 删除节点方式二 Text true */ public static void delete1() throws Exception { // 创建读取器 SAXReader reader = new SAXReader(); // 读取xml文档 Document read = reader.read("lbl/NewFile.xml"); // 获取根节点 Element rootElement = read.getRootElement(); // 拿到要修改的节点---方式二 Text true @SuppressWarnings("unchecked") List<Object> attributes = (rootElement.elements()); Element ment = (Element) attributes.get(1); rootElement.remove(ment); // 重新将XML写入硬盘 OutputStream ou = new FileOutputStream("lbl/NewFile.xml"); Writer wr = new OutputStreamWriter(ou, "utf-8"); read.write(wr); wr.close(); ou.close(); System.out.println("delete ok"); } }