「java创建xml」JAVA创建窗口

博主：adminadmin 2022-12-03 00:48:10 67

本篇文章给大家谈谈java创建xml，以及JAVA创建窗口对应的知识点，希望对各位有所帮助，不要忘了收藏本站喔。

本文目录一览：

JAVA如何写XML文件？

import java.io.*;\x0d\x0a \x0d\x0aimport org.dom4j.*;\x0d\x0a import org.dom4j.io.OutputFormat;\x0d\x0a import org.dom4j.io.XMLWriter;\x0d\x0a \x0d\x0apublic class DOM4JTest {\x0d\x0a public static void main(String[] args) {\x0d\x0a Document doc = DocumentHelper.createDocument();\x0d\x0a doc.addProcessingInstruction("xml-stylesheet", "type='text/xsl href='students.xsl'");\x0d\x0a Element root = doc.addElement("students");\x0d\x0a \x0d\x0a Element eltStu1 = root.addElement("student").addAttribute("sn", "01");\x0d\x0a Element eltName1 = eltStu1.addElement("name");\x0d\x0a Element eltAge1 = eltStu1.addElement("age");\x0d\x0a eltName1.setText("张三");\x0d\x0a eltAge1.setText("20");\x0d\x0a \x0d\x0a Element eltStu2 = root.addElement("student").addAttribute("sn", "02");\x0d\x0a Element eltName2 = eltStu2.addElement("name");\x0d\x0a Element eltAge2 = eltStu2.addElement("age");\x0d\x0a eltName2.setText("李四");\x0d\x0a eltAge2.setText("18");\x0d\x0a \x0d\x0a try {\x0d\x0a OutputFormat format = new OutputFormat("\x0d\x0a ", true);\x0d\x0a format.setEncoding("gb2312");\x0d\x0a // 可以把System.out改为你要的流。\x0d\x0a XMLWriter xmlWriter = new XMLWriter(new PrintWriter(System.out), format);\x0d\x0a xmlWriter.write(doc);\x0d\x0a xmlWriter.close();\x0d\x0a } catch (IOException e) {\x0d\x0a e.printStackTrace();\x0d\x0a }\x0d\x0a }\x0d\x0a }

java 读取xml文件部分内容 并创建新的xml文件

下面的代码，你自己看看吧。希望能帮了你,能读取a.xml中的book1的内容。至于写入b.xml中可以String写，也可以xml写。

import java.io.File;

import org.w3c.dom.*;

import javax.xml.parsers.DocumentBuilderFactory;

import javax.xml.parsers.DocumentBuilder;

import org.xml.sax.SAXException;

import org.xml.sax.SAXParseException;

public class ReadAndPrintXMLFile{

public static void main (String argv []){

try {

DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();

DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();

//read a.xml

Document doc = docBuilder.parse (new File("D:\\a.xml"));

// normalize text redivsentation

doc.getDocumentElement ().normalize ();

//System.out.println ("Root element of the doc is " + doc.getDocumentElement().getNodeName());

//get book1 the node you want!!

NodeList listOfPersons = doc.getElementsByTagName("book1");

for(int s=0; slistOfPersons.getLength() ; s++){

Node firstPersonNode = listOfPersons.item(s);

//get all propertities of the node you want.

if(firstPersonNode.getNodeType() == Node.ELEMENT_NODE){

Element firstPersonElement = (Element)firstPersonNode;

//-------

NodeList firstNameList = firstPersonElement.getElementsByTagName("name");

Element firstNameElement = (Element)firstNameList.item(0);

NodeList textFNList = firstNameElement.getChildNodes();

//System.out.println("First Name : " +

// ((Node)textFNList.item(0)).getNodeValue().trim());

//-------

NodeList lastNameList = firstPersonElement.getElementsByTagName("price");

Element lastNameElement = (Element)lastNameList.item(0);

NodeList textLNList = lastNameElement.getChildNodes();

//System.out.println("Last Name : " +

// ((Node)textLNList.item(0)).getNodeValue().trim());

//----

}//end of if clause

}//end of for loop with s var

}

catch (SAXParseException err) {

System.out.println ("** Parsing error" + ", line "

+ err.getLineNumber () + ", uri " + err.getSystemId ());

System.out.println(" " + err.getMessage ());

}

catch (SAXException e) {

Exception x = e.getException ();

((x == null) ? e : x).printStackTrace ();

}

catch (Throwable t) {

t.printStackTrace ();

}

//System.exit (0);

}//end of main

}

如何用java代码创建xml文件

用java自带的就可以，有问题可以问我

import javax.xml.parsers.DocumentBuilder;

import javax.xml.parsers.DocumentBuilderFactory;

//构造

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();

}

}

JAVA 生成xml格式，具体格式如下，请问JAVA方法怎么写

import java.io.File;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import org.w3c.dom.*;import org.xml.sax.SAXException;import javax.xml.parsers.*;import javax.xml.transform.*;import javax.xml.transform.dom.DOMSource;import javax.xml.transform.stream.*;import javax.xml.xpath.*;public class Test { public static void main(String[] args) { DocumentBuilderFactory factory=DocumentBuilderFactory.newInstance(); Element theBook=null, theElem=null, root=null; try { factory.setIgnoringElementContentWhitespace(true); DocumentBuilder db=factory.newDocumentBuilder(); Document xmldoc=db.parse(new File("Test1.xml")); root=xmldoc.getDocumentElement(); theBook=(Element) selectSingleNode("/books/book[name='哈里波特']", root); System.out.println("--- 查询找《哈里波特》 ----"); Element nameNode=(Element)theBook.getElementsByTagName("price").item(0); String name=nameNode.getFirstChild().getNodeValue(); System.out.println(name); output(theBook); System.out.println("=============selectSingleNode(books/book[name='哈里波特'], root)=================="); //--- 新建一本书开始 ---- theBook=xmldoc.createElement("book"); theElem=xmldoc.createElement("name"); theElem.setTextContent("新书"); theBook.appendChild(theElem); theElem=xmldoc.createElement("price"); theElem.setTextContent("20"); theBook.appendChild(theElem); theElem=xmldoc.createElement("memo"); theElem.setTextContent("新书的更好看。"); theBook.appendChild(theElem); root.appendChild(theBook); System.out.println("--- 新建一本书开始 ----"); output(xmldoc); System.out.println("=============================="); //--- 新建一本书完成 ---- //--- 下面对《哈里波特》做一些修改。 ---- //--- 查询找《哈里波特》---- //--- 此时修改这本书的价格 ----- theBook.getElementsByTagName("price").item(0).setTextContent("15");//getElementsByTagName返回的是NodeList，所以要跟上item(0)。另外，getElementsByTagName("price")相当于xpath的".//price"。 System.out.println("--- 此时修改这本书的价格 ----"); output(theBook); //--- 另外还想加一个属性id，值为B01 ---- theBook.setAttribute("id", "B01"); System.out.println("--- 另外还想加一个属性id，值为B01 ----"); output(theBook); //--- 对《哈里波特》修改完成。 ---- //--- 要用id属性删除《三国演义》这本书 ---- theBook=(Element) selectSingleNode("/books/book[@id='B02']", root); System.out.println("--- 要用id属性删除《三国演义》这本书 ----"); output(theBook); theBook.getParentNode().removeChild(theBook); System.out.println("--- 删除后的XML ----"); output(xmldoc); //--- 再将所有价格低于10的书删除 ---- NodeList someBooks=selectNodes("/books/book[price10]", root); System.out.println("--- 再将所有价格低于10的书删除 ---"); System.out.println("--- 符合条件的书有　"+someBooks.getLength()+"本。 ---"); for(int i=0;isomeBooks.getLength();i++) { someBooks.item(i).getParentNode().removeChild(someBooks.item(i)); } output(xmldoc); saveXml("Test1_Edited.xml", xmldoc); } catch (ParserConfigurationException e) { e.printStackTrace(); } catch (SAXException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } public static void output(Node node) {//将node的XML字符串输出到控制台 TransformerFactory transFactory=TransformerFactory.newInstance(); try { Transformer transformer = transFactory.newTransformer(); transformer.setOutputProperty("encoding", "gb2312"); transformer.setOutputProperty("indent", "yes"); DOMSource source=new DOMSource(); source.setNode(node); StreamResult result=new StreamResult(); result.setOutputStream(System.out); transformer.transform(source, result); } catch (TransformerConfigurationException e) { e.printStackTrace(); } catch (TransformerException e) { e.printStackTrace(); } } public static Node selectSingleNode(String express, Object source) {//查找节点，并返回第一个符合条件节点 Node result=null; XPathFactory xpathFactory=XPathFactory.newInstance(); XPath xpath=xpathFactory.newXPath(); try { result=(Node) xpath.evaluate(express, source, XPathConstants.NODE); } catch (XPathExpressionException e) { e.printStackTrace(); } return result; } public static NodeList selectNodes(String express, Object source) {//查找节点，返回符合条件的节点集。 NodeList result=null; XPathFactory xpathFactory=XPathFactory.newInstance(); XPath xpath=xpathFactory.newXPath(); try { result=(NodeList) xpath.evaluate(express, source, XPathConstants.NODESET); } catch (XPathExpressionException e) { e.printStackTrace(); } return result; } public static void saveXml(String fileName, Document doc) {//将Document输出到文件 TransformerFactory transFactory=TransformerFactory.newInstance(); try { Transformer transformer = transFactory.newTransformer(); transformer.setOutputProperty("indent", "yes"); DOMSource source=new DOMSource(); source.setNode(doc); StreamResult result=new StreamResult(); result.setOutputStream(new FileOutputStream(fileName)); transformer.transform(source, result); } catch (TransformerConfigurationException e) { e.printStackTrace(); } catch (TransformerException e) { e.printStackTrace(); } catch (FileNotFoundException e) { e.printStackTrace(); } }} XML：?xml version="1.0" encoding="GBK"?booksbookname哈里波特/nameprice10/pricememo这是一本很好看的书。/memo/bookbook id="B02"name三国演义/nameprice10/pricememo四大名著之一。/memo/bookbook id="B03"name水浒/nameprice6/pricememo四大名著之一。/memo/bookbook id="B04"name红楼/nameprice5/pricememo四大名著之一。/memo/book/books

如何用java生成一个xml文件

一个XML文档，可以先构造一个DOM，然后将DOM转化为xml序列，输出或者生成文件。package test;

import java.io.ByteArrayOutputStream;

import java.io.File;

import java.io.FileOutputStream;

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.Element;

public class Test {

public static void generate(){

try {

DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();

DocumentBuilder builder = factory.newDocumentBuilder();

Document document = builder.newDocument();

document.setXmlVersion("1.0");

document.setXmlStandalone(true);

Element root = document.createElement_x("MobileNet"); //创建根节点

document.appendChild(root); //将根节点添加到Document对象中

Element pageElement = document.createElement_x("page"); //设置第一个page元素到

pageElement.setAttribute("name", "list.jsp"); //设置page节点的name属性

Element methodElement = document.createElement_x("method"); //设置method节点

methodElement.setTextContent("get"); //给method设置值

pageElement.appendChild(methodElement); //添加method节点到page节点内

Element displayElement = document.createElement_x("display"); //设置method节点

displayElement.setTextContent("list撒旦发放"); //给display设置值

pageElement.appendChild(displayElement); //添加display节点到page节点内

Element request_paramElement = document.createElement_x("request_param");

request_paramElement.setTextContent("request_param1|request_param2");

pageElement.appendChild(request_paramElement);

root.appendChild(pageElement);

pageElement = document.createElement_x("page"); //设置第二个page元素到

pageElement.setAttribute("name", "content.jsp"); //设置page节点的name属性

methodElement = document.createElement_x("method");

methodElement.setTextContent("post");

pageElement.appendChild(methodElement);

displayElement = document.createElement_x("display");

displayElement.setTextContent("content");

pageElement.appendChild(displayElement);

Element url_titleElement = document.createElement_x("url_title"); //设置url_title节点

url_titleElement.setTextContent("title,publisher,published_calendar"); //给url_title设置值

pageElement.appendChild(url_titleElement); //添加url_title节点到page节点内

root.appendChild(pageElement); //将page段加人根节点内

TransformerFactory transFactory = TransformerFactory.newInstance(); //开始把Document映射到文件

Transformer transFormer = transFactory.newTransformer();

DOMSource domSource = new DOMSource(document); //设置输出结果

File file = new File("MobileNetRule.xml"); //生成xml文件

if (!file.exists()) {

file.createNewFile();

}

FileOutputStream out = new FileOutputStream(file); //文件输出流

StreamResult xmlResult = new StreamResult(out); //设置输入源

transFormer.transform(domSource, xmlResult); //输出xml文件

System.out.println(file.getAbsolutePath()); //测试文件输出的路径

TransformerFactory tf = TransformerFactory.newInstance();

Transformer t = tf.newTransformer();

t.setOutputProperty("{/encoding/}","GB2312/");

ByteArrayOutputStream boc = new ByteArrayOutputStream();

t.transform(new DOMSource(document), new StreamResult(boc));

String xmlstring = boc.toString();

System.out.println(xmlstring);

} catch (Exception e) {

e.printStackTrace();

}

}

public static void main(String[] args){

Test.generate();

}

}

关于用java创建XML文档的问题

import java.io.IOException;

import java.util.ArrayList;

import java.util.List;

import org.jdom.Document;

import org.jdom.Element;

import org.jdom.output.Format;

import org.jdom.output.XMLOutputter;

public class GenerateXml {

public static void main(String[] args) {

//初始化3本书籍

GenerateXml gx = new GenerateXml();

Book book1 = gx.new Book("author1", "title1", "publisher1", "subject1",

gx.new PublicationDate("edition1", "isbn1", "date1"));

Book book2 = gx.new Book("author2", "title2", "publisher2", "subject2",

gx.new PublicationDate("edition2", "isbn2", "date2"));

Book book3 = gx.new Book("author3", "title3", "publisher3", "subject3",

gx.new PublicationDate("edition3", "isbn3", "date3"));

ListBook books = new ArrayListBook();

books.add(book1);

books.add(book2);

books.add(book3);

//产生XML，根据List中的对象，打印到控制台，没有生成文件

generateLib(books);

}

static void generateLib(ListBook books) {

Document doc = new Document();

//产生根元素

Element root = new Element("Library");

doc.setRootElement(root);

//循环list，根元素再一一加入book节点

for (Book book : books) {

//生成book节点

Element bookElement = new Element("Book");

bookElement.addContent(new Element("Author").addContent(book

.getAuthor()));

bookElement.addContent(new Element("Title").addContent(book

.getTitle()));

bookElement.addContent(new Element("PublicationDate")

.setAttribute("edition",

book.getPublicationDate().getEdition())

.setAttribute("isbn", book.getPublicationDate().getIsbn())

.addContent(book.getPublicationDate().getDate()));

bookElement.addContent(new Element("Publisher").addContent(book

.getPublisher()));

bookElement.addContent(new Element("Subject").addContent(book

.getSubject()));

//根元素加入一本book

root.addContent(bookElement);

}

XMLOutputter outputter = new XMLOutputter(Format.getPrettyFormat());

try {

outputter.output(doc, System.out);

} catch (IOException e) {

e.printStackTrace();

}

}

//书类

class Book {

String author;

String title;

String publisher;

String subject;

PublicationDate publicationDate;

public Book() {

super();

}

public Book(String author, String title, String publisher,

String subject, PublicationDate publicationDate) {

super();

this.author = author;

this.title = title;

this.publisher = publisher;

this.subject = subject;

this.publicationDate = publicationDate;

}

public String getAuthor() {

return author;

}

public void setAuthor(String author) {

this.author = author;

}

public String getTitle() {

return title;

}

public void setTitle(String title) {

this.title = title;

}

public String getPublisher() {

return publisher;

}

public void setPublisher(String publisher) {

this.publisher = publisher;

}

public String getSubject() {

return subject;

}

public void setSubject(String subject) {

this.subject = subject;

}

public PublicationDate getPublicationDate() {

return publicationDate;

}

public void setPublicationDate(PublicationDate publicationDate) {

this.publicationDate = publicationDate;

}

}

//日期类

class PublicationDate {

String edition;

String isbn;

String date;

public PublicationDate() {

super();

}

public PublicationDate(String edition, String isbn, String date) {

super();

this.edition = edition;

this.isbn = isbn;

this.date = date;

}

public String getEdition() {

return edition;

}

public void setEdition(String edition) {

this.edition = edition;

}

public String getIsbn() {

return isbn;

}

public void setIsbn(String isbn) {

this.isbn = isbn;

}

public String getDate() {

return date;

}

public void setDate(String date) {

this.date = date;

}

}

}

关于java创建xml和JAVA创建窗口的介绍到此就结束了，不知道你从中找到你需要的信息了吗 ？如果你还想了解更多这方面的信息，记得收藏关注本站。

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发布于：2022-12-03，除非注明，否则均为首码项目网原创文章，转载请注明出处。

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