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xml和string和xml和CDATA的用法
StringToXml.java
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.StringReader;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.Node;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.SAXReader;
import org.dom4j.io.XMLWriter;
public class StringToXml {
public static void xmlTest(){
String xml="<?xml version='1.0' encoding='UTF-8' standalone='yes'?>" +
"<root>" +
"<head>" +
"<name>MyName</name>" +
"<age><![CDATA[11]]></age>" + //要注意 CDATA 格式的写法哦，不要缺少"<"符号 "</head>" + "</root>"; //输出这个String类型的XML System.out.println("输出这个String类型的XML:n"+xml); //将String的XML转化为XML类型并输出 Document document=null; try { document = DocumentHelper.parseText(xml); } catch (DocumentException e) { // TODO Auto-generated catch block e.printStackTrace(); } //为节点增加子节点 document.getRootElement().addElement("testNode_Add"); document.getRootElement().addElement("testNode_Add2"); //获取子节点并显示子节点的内容 System.out.println("n获取子节点并显示子节点的内容:"); Element rt = document.getRootElement(); Node nameNode=rt.selectSingleNode("/root/head/name"); Node ageNode=rt.selectSingleNode("/root/head/age"); rt.selectSingleNode("/root/testNode_Add").setText("实验新增节点"); Element note2=(Element) rt.selectSingleNode("/root/testNode_Add2"); note2.addCDATA("实验CDATA节点内容"); Node testNode_AddNode=rt.selectSingleNode("/root/testNode_Add"); Node testNode_AddNode2=rt.selectSingleNode("/root/testNode_Add2"); System.out.println("nameNode="+nameNode.getText()); System.out.println("ageNode="+ageNode.getText()); System.out.println("testNode_AddNode="+testNode_AddNode.getText()); System.out.println("testNode_AddNode2="+testNode_AddNode2.getText()); //将XML转化String String xml2=document.asXML(); System.out.println(xml2); Document document2=null; SAXReader reader = new SAXReader(); //将String转化为XML StringReader stringReader = new StringReader(xml2.trim()); try { document2 = reader.read(stringReader); //XML转化为String System.out.println("2"+document2.asXML()); } catch (DocumentException e) { // TODO Auto-generated catch block e.printStackTrace(); } //将XML格式化显示在操作台-默认是utf-8 OutputFormat outPutFormat=OutputFormat.createPrettyPrint(); outPutFormat.setEncoding("GBK");//如果要更改字符格式 XMLWriter xmlWriter=new XMLWriter(new OutputStreamWriter(System.out),outPutFormat); try { System.out.println("n"); xmlWriter.write(document); xmlWriter.flush(); System.out.println("nxmlWriter.close();之后的代码都不会再运行"); xmlWriter.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } public static void main(String [] args){ xmlTest(); } } （编辑：李大同）
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