问得太笼统,问问题要问详细的点上,
不是要别人具体地说,:)代码:
/**
* xerces version 1.3.0
* xalan version 2.0.1
* jdom version 1.0beta6
* jdk version 1.2
*
* @author lulu
* @copyright com.biaoqi
*/import java.io.*;
import javax.xml.transform.*;
import javax.xml.transform.stream.*;
import org.jdom.*;
import org.jdom.input.SAXBuilder;
import org.jdom.output.XMLOutputter;
public class Article
{/**
* Read and parse an xml document from the file at xml/sample.xml.
* This method corresponds to the code in Listing 7.
* @return the JDOM document parsed from the file.
*/ public static Document readDocument()
{
try
{
SAXBuilder builder = new SAXBuilder();
Document anotherDocument = builder.build(new File("xml/sample.xml"));
return anotherDocument;
}
catch(JDOMException e)
{
e.printStackTrace();
}
catch(NullPointerException e)
{
e.printStackTrace();
}
return null;
}/**
* This method creates a JDOM document with elements that represent the
* properties of a car.
* This method corresponds to Listing 2.
* @return a JDOM Document that represents the properties of a car.
*/
public static Document createDocument()
{
// Create the root element
Element carElement = new Element("car");
// create the document
Document myDocument = new Document(carElement);
// add an attribute to the root element
carElement.setAttribute(new Attribute("ibs", "superibs"));// add a comment
carElement.addContent(new Comment("Description of a car"));// add some child elements/*
* Note that this is the first approach to adding an element and
* textual content. The second approach is commented out.
*/ Element make = new Element("make");
make.addContent("Toyota");
carElement.addContent(make);
// carElement.addContent(new Element("make").addContent("Toyota"));// add some more elements
carElement.addContent(new Element("model").addContent("stupid"));
carElement.addContent(new Element("year").addContent("1997"));
carElement.addContent(new Element("color").addContent("green"));
carElement.addContent(new Element("license").addContent("1ABC234").setAttribute("state", "CA")); return myDocument;
}/**
* This method accesses a child element of the root element of the
* document built in listing 2 with the createDocument method.
* This method corresponds to Listing 3.
* @param myDocument the JDOM document built from Listing 2
*/ public static void accessChildElement(Document myDocument)
{
// some setup
Element carElement = myDocument.getRootElement();// Access a child element
Element yearElement = carElement.getChild("year");// show success or failure
if(yearElement != null)
{
System.out.println("Here is the element we found: " +
yearElement.getName() + ". Its content: " +
yearElement.getText() + "\n");
} else {
System.out.println("Something is wrong. We did not find a year Element");
}
}/**
* This method removes a child element from a document. The document
* should be of the format created in Listing 2.
* This method corresponds to Listin 4.
* @param myDocument the JDOM document built from Listing 2.
*/ public static void removeChildElement(Document myDocument)
{
// some setup
System.out.println("About to remove the year element.\nThe current document:");
outputDocument(myDocument);
Element carElement = myDocument.getRootElement();// remove a child Element
boolean removed = carElement.removeChild("year");// show success or failure
if(removed)
{
System.out.println("Here is the modified document without year:");
outputDocument(myDocument);
}
else
{
System.out.println("Something happened. We were unable to remove the year element.");
}
}/**
* This method shows how to use XMLOutputter to output a JDOM document to
* the stdout.
* This method corresponds to Listing 5.
* @param myDocument the JDOM document built from Listing 2.
*/ public static void outputDocument(Document myDocument)
{
try
{
XMLOutputter outputter = new XMLOutputter(" ", true);
outputter.output(myDocument, System.out);
}
catch (java.io.IOException e)
{
e.printStackTrace();
}
}
不是要别人具体地说,:)代码:
/**
* xerces version 1.3.0
* xalan version 2.0.1
* jdom version 1.0beta6
* jdk version 1.2
*
* @author lulu
* @copyright com.biaoqi
*/import java.io.*;
import javax.xml.transform.*;
import javax.xml.transform.stream.*;
import org.jdom.*;
import org.jdom.input.SAXBuilder;
import org.jdom.output.XMLOutputter;
public class Article
{/**
* Read and parse an xml document from the file at xml/sample.xml.
* This method corresponds to the code in Listing 7.
* @return the JDOM document parsed from the file.
*/ public static Document readDocument()
{
try
{
SAXBuilder builder = new SAXBuilder();
Document anotherDocument = builder.build(new File("xml/sample.xml"));
return anotherDocument;
}
catch(JDOMException e)
{
e.printStackTrace();
}
catch(NullPointerException e)
{
e.printStackTrace();
}
return null;
}/**
* This method creates a JDOM document with elements that represent the
* properties of a car.
* This method corresponds to Listing 2.
* @return a JDOM Document that represents the properties of a car.
*/
public static Document createDocument()
{
// Create the root element
Element carElement = new Element("car");
// create the document
Document myDocument = new Document(carElement);
// add an attribute to the root element
carElement.setAttribute(new Attribute("ibs", "superibs"));// add a comment
carElement.addContent(new Comment("Description of a car"));// add some child elements/*
* Note that this is the first approach to adding an element and
* textual content. The second approach is commented out.
*/ Element make = new Element("make");
make.addContent("Toyota");
carElement.addContent(make);
// carElement.addContent(new Element("make").addContent("Toyota"));// add some more elements
carElement.addContent(new Element("model").addContent("stupid"));
carElement.addContent(new Element("year").addContent("1997"));
carElement.addContent(new Element("color").addContent("green"));
carElement.addContent(new Element("license").addContent("1ABC234").setAttribute("state", "CA")); return myDocument;
}/**
* This method accesses a child element of the root element of the
* document built in listing 2 with the createDocument method.
* This method corresponds to Listing 3.
* @param myDocument the JDOM document built from Listing 2
*/ public static void accessChildElement(Document myDocument)
{
// some setup
Element carElement = myDocument.getRootElement();// Access a child element
Element yearElement = carElement.getChild("year");// show success or failure
if(yearElement != null)
{
System.out.println("Here is the element we found: " +
yearElement.getName() + ". Its content: " +
yearElement.getText() + "\n");
} else {
System.out.println("Something is wrong. We did not find a year Element");
}
}/**
* This method removes a child element from a document. The document
* should be of the format created in Listing 2.
* This method corresponds to Listin 4.
* @param myDocument the JDOM document built from Listing 2.
*/ public static void removeChildElement(Document myDocument)
{
// some setup
System.out.println("About to remove the year element.\nThe current document:");
outputDocument(myDocument);
Element carElement = myDocument.getRootElement();// remove a child Element
boolean removed = carElement.removeChild("year");// show success or failure
if(removed)
{
System.out.println("Here is the modified document without year:");
outputDocument(myDocument);
}
else
{
System.out.println("Something happened. We were unable to remove the year element.");
}
}/**
* This method shows how to use XMLOutputter to output a JDOM document to
* the stdout.
* This method corresponds to Listing 5.
* @param myDocument the JDOM document built from Listing 2.
*/ public static void outputDocument(Document myDocument)
{
try
{
XMLOutputter outputter = new XMLOutputter(" ", true);
outputter.output(myDocument, System.out);
}
catch (java.io.IOException e)
{
e.printStackTrace();
}
}
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* This method shows how to use XMLOutputter to output a JDOM document to
* a file located at xml/myFile.xml.
* This method corresponds to Listing 6.
* @param myDocument the JDOM document built from Listing 2.
*/ public static void outputDocumentToFile(Document myDocument)
{
// setup this like outputDocument
try
{
XMLOutputter outputter = new XMLOutputter(" ", true);// output to a file
FileWriter writer = new FileWriter("xml/myFile.xml");
outputter.output(myDocument, writer);
writer.close(); }
catch(java.io.IOException e)
{
e.printStackTrace();
}
}/**
* This method takes a JDOM document in memory, an xsl file at xml/car.xsl,
* and outputs the results to stdout.
* This method corresponds to Listing 9.
* @param myDocument the JDOM document built from Listing 2.
*/ public static void executeXSL(Document myDocument)
{
try
{
TransformerFactory tFactory = TransformerFactory.newInstance();
// Make the input sources for the XML and XSLT documents
org.jdom.output.DOMOutputter outputter = new org.jdom.output.DOMOutputter();
org.w3c.dom.Document domDocument = outputter.output(myDocument);
javax.xml.transform.Source xmlSource = new javax.xml.transform.dom.DOMSource(domDocument);
StreamSource xsltSource = new StreamSource(new FileInputStream("xml/car.xsl"));//Make the output result for the finished document
/*
* Note that here we are just going to output the results to the
* System.out, since we don't actually have a HTTPResponse object
* in this example
*/// StreamResult xmlResult = new StreamResult(response.getOutputStream());
StreamResult xmlResult = new StreamResult(System.out);
// Get a XSLT transformer
Transformer transformer = tFactory.newTransformer(xsltSource);
// do the transform
transformer.transform(xmlSource, xmlResult);
}
catch(FileNotFoundException e)
{
e.printStackTrace();
} catch(TransformerConfigurationException e)
{
e.printStackTrace();
}
catch(TransformerException e)
{
e.printStackTrace();
}
catch(org.jdom.JDOMException e)
{
e.printStackTrace();
}
}/**
* Main method that allows the various methods to be used.
* It takes a single command line parameter. If none are
* specified, or the parameter is not understood, it prints
* its usage.
*/ public static void main(String argv[])
{
if(argv.length == 1)
{
String command = argv[0];
if(command.equals("create")) outputDocument(createDocument());
else if(command.equals("access")) accessChildElement(createDocument());
else if(command.equals("remove")) removeChildElement(createDocument());
else if(command.equals("output")) outputDocument(createDocument());
else if(command.equals("file")) outputDocumentToFile(createDocument());
else if(command.equals("read")) outputDocument(readDocument());
else if(command.equals("xsl")) executeXSL(createDocument());
else
{
System.out.println(command + " is not a valid option.");
printUsage();
}
}
else
{
printUsage();
}
}/**
* Convience method to print the usage options for the class.
*/ public static void printUsage()
{
System.out.println("Usage: Article [option] \n where option is one of the following:");
System.out.println(" create - create a document as shown in Listing 2");
System.out.println(" access - access a child element as shown in Listing 3");
System.out.println(" remove - remove a child element as shown in Listing 4");
System.out.println(" output - output a document to the console as shown in Listing 5");
System.out.println(" file - output a document to xml/myFile.xml as shown in Listing 6");
System.out.println(" read - parse a document from xml/sample.xml as shown in Listing 7");
System.out.println(" xsl - transform a document as shown in Listing 9");
}
}sample.xml:
<?xml version="1.0" encoding="UTF-8"?>
<car vin="123fhg5869705iop90">
<!--Description of a car-->
<make>Toyota</make>
<model>Celica</model>
<year>1997</year>
<color>green</color>
<license state="CA">1ABC234</license>
</car>
Castor JDO 源代码和示例,http://www.castor.org/download.html
请看这个问题,是工作中遇到的具体问题:
http://expert.csdn.net/Expert/topic/1206/1206782.xml?temp=.7598383