Xml生成
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生成如下:my.xml:
<?xml version="1.0" encoding="UTF-8" standalone="no"?><persons><person pid="1" pname="hug"><page>22</page><psex>男</psex></person></persons>
生成如下:students.xml:
<?xml version="1.0" encoding="UTF-8"?>
<students>
<student sid="1" sname="hug">
<sage>140</sage>
<ssex>男</ssex>
</student>
</students>
entity文件:
package com.zking.entity;
public class Dog {
private int did;
private String dname;
private int dage;
public Dog() {
super();
// TODO Auto-generated constructor stub
}
public Dog(int did, String dname, int dage) {
super();
this.did = did;
this.dname = dname;
this.dage = dage;
}
public int getDid() {
return did;
}
public void setDid(int did) {
this.did = did;
}
public String getDname() {
return dname;
}
public void setDname(String dname) {
this.dname = dname;
}
public int getDage() {
return dage;
}
public void setDage(int dage) {
this.dage = dage;
}
}
Servlet文件:
import java.util.ArrayList;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.zking.entity.Dog;
public class GetXMlServlet extends HttpServlet{
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
List<Dog> dogs=new ArrayList<Dog>();
for (int i = 1; i <=3; i++) {
dogs.add(new Dog(i, "旺旺"+i, 1));
}
req.setAttribute("dogs", dogs);
req.getRequestDispatcher("success.jsp").forward(req, resp);
}
}
Test中TestCreateXMlByDocument文件:
package com.zking.test;
import java.io.File;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.w3c.dom.Attr;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
/**
* 创建XML 使用Document
* @author Administrator
*
*/
public class TestCreateXMlByDocument {
public static void main(String[] args) {
try {
//1.实例化DocumentBuilderFactory
DocumentBuilderFactory dbf=DocumentBuilderFactory.newInstance();
//2.通过dbf获取DocumentBuilder
DocumentBuilder db=dbf.newDocumentBuilder();
//3.创建Document
Document document=db.newDocument();
//4.创建标签<persons>
Element elementPersons=document.createElement("persons");
//创建<person>
Element elementPerson=document.createElement("person");
//创建<page>
Element elementPage=document.createElement("page");
//给标签设值
elementPage.setTextContent("22");
//创建<psex>
Element elementPsex=document.createElement("psex");
elementPsex.setTextContent("男");
//5.创建属性
Attr attrPid=document.createAttribute("pid");
//给属性设值
attrPid.setValue("1");
Attr attrPname=document.createAttribute("pname");
attrPname.setValue("hug");
//6.建立关系
document.appendChild(elementPersons);
elementPersons.appendChild(elementPerson);
elementPerson.appendChild(elementPage);
elementPerson.appendChild(elementPsex);
elementPerson.setAttributeNode(attrPid);
elementPerson.setAttributeNode(attrPname);
System.out.println("创建OK");
//将生成的Document保存到XML文件中
//1.实例化转换器工厂
TransformerFactory tff=TransformerFactory.newInstance();
//2.通过tff获取转换器
Transformer transformer=tff.newTransformer();
//来源
DOMSource source=new DOMSource(document);
//结果
StreamResult streamResult=new StreamResult(new File("my.xml"));
//3.开始转换
transformer.transform(source, streamResult);
System.out.println("保存成功");
} catch (ParserConfigurationException e) {
e.printStackTrace();
} catch (TransformerConfigurationException e) {
e.printStackTrace();
} catch (TransformerException e) {
e.printStackTrace();
}
}
}
TestCreateXMLByDom4j文件:
package com.zking.test;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.XMLWriter;
/**
* 使用DOM4J创建XML
* @author Administrator
*
*/
public class TestCreateXMLByDom4j {
public static void main(String[] args) {
try {
//1.创建Document
Document document=DocumentHelper.createDocument();
//2.创建标签<students>
Element elementStudents=document.addElement("students");
//创建标签<student>
Element elementStudent=elementStudents.addElement("student");
//设值属性
elementStudent.addAttribute("sid", "1");
elementStudent.addAttribute("sname", "hug");
//创建标签<sage><ssex>
Element elementSage=elementStudent.addElement("sage");
//设值
elementSage.setText("140");
Element elementSsex=elementStudent.addElement("ssex");
elementSsex.setText("男");
//生成到XML中
FileOutputStream fos=new FileOutputStream("students.xml");
XMLWriter xmlWriter=new XMLWriter(fos,OutputFormat.createPrettyPrint());
xmlWriter.write(document);
xmlWriter.close();
System.out.println("OK");
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
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