转载几篇关于java读写及验证xml的文章（一、How to create XML file in Java ）

来自： http://forums.techarena.in/software-development/1169158.htm

Khushal · # 2 27-04-2009

This program helps in creating a XML document on the console. This program asks for the number of elements to be added in the generated xml file. It takes the root name at the console and passes it in the createElement() method. It creates the Element object and invokes the Document object . Depending upon the given number, it creates that much elements and fills them with data,. Finally, it displays the generated XML file with its version and encoding.

Here is Java File: CreatXMLFile.java

Code:

import java.io.*;
import javax.xml.parsers.*;
import javax.xml.transform.*;
import javax.xml.transform.dom.*;
import javax.xml.transform.stream.*;
import org.w3c.dom.*;
 
public class CreatXMLFile {
  public static void main(String[] args) throws Exception {
    BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));
    System.out.print("Enter number to add elements in your XML file: ");
    String str = bf.readLine();
    int no = Integer.parseInt(str);
    System.out.print("Enter root: ");
    String root = bf.readLine();
    DocumentBuilderFactory documentBuilderFactory = 
                                   DocumentBuilderFactory.newInstance();
        DocumentBuilder documentBuilder = 
                              documentBuilderFactory.newDocumentBuilder();
        Document document = documentBuilder.newDocument();
    Element rootElement = document.createElement(root);
        document.appendChild(rootElement);
    for (int i = 1; i <= no; i++){
      System.out.print("Enter the element: ");
      String element = bf.readLine();
      System.out.print("Enter the data: ");
      String data = bf.readLine();
      Element em = document.createElement(element);
      em.appendChild(document.createTextNode(data));
      rootElement.appendChild(em);
    }
    TransformerFactory transformerFactory = TransformerFactory.newInstance();
        Transformer transformer = transformerFactory.newTransformer();
        DOMSource source = new DOMSource(document);
        StreamResult result =  new StreamResult(System.out);
        transformer.transform(source, result);
  }
}

Suzane · # 3 27-04-2009

Thanks Khushal this really work out, this is what i wanted to have to create the XML file.

If anyone has different programming logic please let me know.

Thanks once again.

Adley · # 4 27-04-2009

Here i will also provide you one more java programming example just have a look at it.

Code:

import javax.xml.transform.stream.StreamSource;
import javax.xml.validation.Schema;
import javax.xml.validation.SchemaFactory;
import javax.xml.validation.Validator;

import org.xml.sax.SAXException;

/**
 * A sample application which shows how to perform a
 * XML document validation.
 */

public class Test {
  public static void main(String[] args) {
    try {
      // define the type of schema - we use W3C:
      String schemaLang = "http://www.w3.org/2001/XMLSchema";

      // get validation driver:
      SchemaFactory factory = SchemaFactory.newInstance(schemaLang);

      // create schema by reading it from an XSD file:
      Schema schema = factory.newSchema(new StreamSource("sample.xsd"));
      Validator validator = schema.newValidator();

      // at last perform validation:
      validator.validate(new StreamSource("sample.xml"));

    }catch (SAXException ex) {
      // we are here if the document is not valid:
      // ... process validation error...
    } catch (Exception ex) {
      ex.printStackTrace();
    }
  }
}