java代碼創建xml文件

① 如何用java代碼創建xml文件

用java自帶的就可以，有問題可以問我

import javax.xml.parsers.DocumentBuilder；
import javax.xml.parsers.DocumentBuilderFactory；
//構造
public XMLUtil(String name) throws ParserConfigurationException {
filename = name；
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance()；
builder = factory.newDocumentBuilder()；
document = builder.newDocument()；
}

/**
* 保存到文件
*/
public void toSave() {
try {
TransformerFactory tf = TransformerFactory.newInstance()；
Transformer transformer = tf.newTransformer()；
DOMSource source = new DOMSource(document)；
transformer.setOutputProperty(OutputKeys.ENCODING， "GB2312")；
transformer.setOutputProperty(OutputKeys.INDENT， "yes")；
PrintWriter pw = new PrintWriter(new FileOutputStream(filename))；
StreamResult result = new StreamResult(pw)；
transformer.transform(source， result)；
} catch (TransformerException mye) {
mye.printStackTrace()；
} catch (IOException exp) {
exp.printStackTrace()；。

② 哪位兄台給一個用java來創建xml文件、更新xml節點的例子

java創建文件不都是一樣嗎？
至於更新文件，看下這個··
別人的
xml:

<?xml version="1.0" encoding="UTF-8"?>

<users>

<Messages>
<sendName>sendUsers</sendName>
<receiveName>snake</receiveName>
<date>2007-12-04 12:20:00</date>
<status>0</status>
<message>this is Content</message>
</Messages>

</users>

java:

package com.lianxi.DAO;
import java.io.File;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;

import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
public class UpdateXml {
public static boolean doc2XmlFile(Document document,String filename)
{
boolean flag = true;
try
{
/** 將document中的內容寫入文件中 */
TransformerFactory tFactory = TransformerFactory.newInstance();
Transformer transformer = tFactory.newTransformer();
/** 編碼 */
//transformer.setOutputProperty(OutputKeys.ENCODING, "GB2312");
DOMSource source = new DOMSource(document);
StreamResult result = new StreamResult(new File(filename));
transformer.transform(source, result);
}catch(Exception ex)
{
flag = false;
ex.printStackTrace();
}
return flag;
}

public static Document load(String filename)
{
Document document = null;
try
{
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder=factory.newDocumentBuilder();
document=builder.parse(new File(filename));
document.normalize();
}
catch (Exception ex){
ex.printStackTrace();
}
return document;
}
/**
* 演示修改文件的具體某個節點的值
*/
public static void xmlUpdateDemo()
{
Document document = load("c://Message.xml");
Node root=document.getDocumentElement();
/** 如果root有子元素 */
if(root.hasChildNodes())
{
/** ftpnodes */
NodeList ftpnodes = root.getChildNodes();
/** 循環取得ftp所有節點 */
for (int i=0;i<ftpnodes.getLength();i++)
{
NodeList ftplist = ftpnodes.item(i).getChildNodes();
for (int k=0;k<ftplist.getLength();k++)
{
Node subnode = ftplist.item(k);
/** 刪除ftp-chn節點 */
// if (subnode.getNodeType()==Node.ELEMENT_NODE&&subnode.getNodeName()=="ftp-chn")
// {
// ftpnodes.item(i).removeChild(subnode);
// }
/** 修改ftp-host的值為 192.168.0.1 */
if (subnode.getNodeType()==Node.ELEMENT_NODE&&subnode.getNodeName()=="status")
{
subnode.getFirstChild().setNodeValue("1");
}
}

}
}

doc2XmlFile(document,"c://Message.xml");
}
public static void main(String args[])throws Exception
{
UpdateXml.xmlUpdateDemo();
}
}

③ java 讀取xml文件部分內容 並創建新的xml文件

用java自帶的就可以，有問題可以問我

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
//構造
public XMLUtil(String name) throws ParserConfigurationException {
filename = name;
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
builder = factory.newDocumentBuilder();
document = builder.newDocument();
}

/**
* 保存到文件
*/
public void toSave() {
try {
TransformerFactory tf = TransformerFactory.newInstance();
Transformer transformer = tf.newTransformer();
DOMSource source = new DOMSource(document);
transformer.setOutputProperty(OutputKeys.ENCODING, "GB2312");
transformer.setOutputProperty(OutputKeys.INDENT, "yes");
PrintWriter pw = new PrintWriter(new FileOutputStream(filename));
StreamResult result = new StreamResult(pw);
transformer.transform(source, result);
} catch (TransformerException mye) {
mye.printStackTrace();
} catch (IOException exp) {
exp.printStackTrace();
}
}

如果對您有幫助，請記得採納為滿意答案，謝謝！祝您生活愉快！

vaela

④ 如何用java生成一個xml文件

//首先下載並添加dom4j.jar包(自己下載)

import java.io.File;
import java.io.FileWriter;
import java.io.PrintWriter;

import javax.swing.JOptionPane;

import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;

/**
* @author wsj
*/
public class Test1 {
public static void main(String[] args) throws Exception {
Document dom=DocumentHelper.createDocument();//創建文件
Element root=dom.addElement("XVal");//添加根元素,Xval
root.addAttribute("X", "X字元串的值");
root.setText("Xval標簽中間的值");
String xml=dom.asXML();
System.out.println(xml);
File f=new File("d:/xml.xml");
PrintWriter pw=new PrintWriter(f);
pw.write(xml);
pw.close();
JOptionPane.showMessageDialog(null, "已生成xml文件,路徑為為d:/xml.xml");
}

}

⑤ 在idea中的Java模塊下 怎麼創建一個xml文件

右鍵點擊目錄，然後選擇new 然後選擇file ，輸入xxx.xml

⑥ Java 如何生成xml文件

寫文件的方法專：屬 FileWriter fw = new FileWriter("test.xml"); fw.write("<?xml version=\"1.0\" encoding=\"UTF-8\"?><dongguancyy><no.8><fhID=\"101null\"></fh></no.8></dongguancyy>"); fw.flush(); fw.close();