Posted on 2007-11-06 15:24
G_G 阅读(2090)
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xml Related
直接看代码..
dom4j 的一般使用都在里面了
/lib/dom4j-1.6.1.jar
/lib/jaxen-1.1-beta-6.jar
package useDom4j.test.supper;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URL;
import java.util.Iterator;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import junit.framework.TestCase;
import org.dom4j.Document;
import org.dom4j.DocumentFactory;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.Node;
import org.dom4j.QName;
import org.dom4j.Visitor;
import org.dom4j.VisitorSupport;
import org.dom4j.XPath;
import org.dom4j.io.DOMReader;
import org.dom4j.io.HTMLWriter;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.SAXReader;
import org.dom4j.io.XMLWriter;
public class useDom4jTest extends TestCase {
//use all
private String path ;
private ClassLoader clo;
// file path -> bin
private String classPath ;
//use save
static private Document doc;
private String filese;
protected void setUp() throws Exception {
super.setUp();
path = "useDom4j/test/config/test.xml";
clo = this.getClass().getClassLoader();
classPath = System.getProperty("java.class.path").split(";")[0] ;
filese = System.getProperty("file.separator");
}
protected void tearDown() throws Exception {
super.tearDown();
}
public void testRead()throws Exception{
SAXReader sax = new SAXReader();
//File read
Document docF = sax.read(
new File(clo.getResource(path).getFile())
);
assertNotNull("is File saxReader err",docF);
//InPutStream read
Document docI = sax.read( clo.getResourceAsStream(path) );
assertNotNull("is InPutStream saxReader err",docI);
//URL read
Document docU = sax.read( clo.getResource(path) );
assertNotNull("is Url saxReader err",docU);
}
/** converts a W3C DOM document into a dom4j document */
public void testConversion() throws Exception{
DocumentBuilderFactory domfac=DocumentBuilderFactory.newInstance();
DocumentBuilder dombuilder=domfac.newDocumentBuilder();
InputStream input = clo.getResourceAsStream(path) ;
org.w3c.dom.Document doc3c = dombuilder.parse( input );
DOMReader xmlReader = new DOMReader();
assertEquals( " Conversion : W3C DOM-> dom4j DOM err",
xmlReader.read(doc3c) instanceof Document,true );
}
public void testCreate()throws Exception{
DocumentFactory factory = DocumentFactory.getInstance();
doc = factory.createDocument();
//root Create
Element root = doc.addElement("testElement");
assertNotNull("is root Create err",root);
Element author2 = root.addElement( "author" )
.addAttribute( "name", "Toby" )
.addAttribute( "location", "Germany" )
.addText( "Tobias Rademacher" );
Element author1 = root.addElement( "author" )
.addAttribute( "name", "James" )
.addAttribute( "location", "UK" )
.addText( "James Strachan" );
//Test Create
//use XPath ->jaxen-xxx.jar
assertEquals("create Element author2 err",
doc.selectSingleNode("/testElement/author[@name='Toby']").getText()
,"Tobias Rademacher");
assertEquals("create Element author1 err",
doc.selectSingleNode("/testElement/author[@location='UK']/@name").getText()
,"James");
}
public void testPrintingHTML()throws Exception{
String testSaveXml = "useDom4j/test/config/testHtml.html";
testSaveXml = classPath+filese+testSaveXml;
File file = getFile(testSaveXml);
//Save file.html
HTMLWriter writer = new HTMLWriter(new FileOutputStream( file ));
writer.write(new SAXReader().read( clo.getResource(path) ));
writer.flush();
}
public void testIterator(){
Element root = this.doc.getRootElement();
//Iterator
Iterator elementIterator = root.elementIterator();
while(elementIterator.hasNext()){
Element element = (Element)elementIterator.next();
assertNotNull("not attr name", element.selectSingleNode("./@name") );
assertNotNull("not attr location", element.selectSingleNode("./@location") );
assertNotNull("not Text ", element.selectSingleNode(".").getText() );
}
//for -> ./XX
for ( int i = 0, size = root.nodeCount(); i < size; i++ ) {
Node node = root.node(i);
if ( node instanceof Element ) {
Element element = (Element)node;
assertNotNull("not attr name", element.selectSingleNode("./@name") );
assertNotNull("not attr location", element.selectSingleNode("./@location") );
assertNotNull("not Text ", element.selectSingleNode(".").getText() );
}
}
//List
List elements = root.elements();
int size = elements.size() ;
if ( size > 4 ) {
elements.subList( 3, 4 ).clear();
assertEquals("List is not clear",size-elements.size()==1,true);
}
}
/** use test.xml test
xpath -> /project/organization/
<organization>
<name>MetaStuff Ltd.</name>
<url>http://sourceforge.net/projects/dom4j</url>
<logo>http://sourceforge.net/sflogo.php?group_id=16035</logo>
</organization>
xpath -> /project/dependencies/dependency[groupId='msv']
<dependency>
<groupId>msv</groupId>
<artifactId>xsdlib</artifactId>
<version>20030807</version>
<url>https://msv.dev.java.net/</url>
</dependency>
*/
public void testXpath()throws Exception{
XPath xpathSelector = DocumentHelper.createXPath("/project/organization/*");
Document docT = new SAXReader().read( clo.getResourceAsStream(path) );
List results = xpathSelector.selectNodes(docT);
for ( Iterator iter = results.iterator(); iter.hasNext(); ) {
Element element = (Element) iter.next();
if(element.getName().equals("name")){
assertEquals("name err", element.getText().equals("MetaStuff Ltd."),true);
}
if(element.getName().equals("url")){
assertEquals("url err", element.getText().equals("http://sourceforge.net/projects/dom4j"),true);
}
if(element.getName().equals("logo")){
assertEquals("logo err", element.getText().equals("http://sourceforge.net/sflogo.php?group_id=16035"),true);
}
}
// select
String url = docT.valueOf( "/project/dependencies/dependency[groupId='msv']/url" );
assertEquals("Url err", url.equals("https://msv.dev.java.net/"),true);
Number count = docT.numberValueOf( "/project/dependencies/dependency[groupId='msv']/version" );
assertEquals("Url err", count.intValue()==20030807,true);
}
public void testVisitor(){
Visitor visitor = new VisitorSupport() {
public void visit(Element element) {
System.out.println(
"Entity name: " + element.getName() + " text :" + element.getText()
);
}
};
doc.accept( visitor );
}
// element.clone ; element.createCopy ;
public void testInsertElementAt() throws Exception{
Element root = this.doc.getRootElement();
Element oldElement = (Element)doc.selectSingleNode("/testElement/author[@name='Toby']");
Element newElement = (Element) oldElement.clone();
List list = root.content();
list.add( root.indexOf(oldElement)+1,newElement );
}
public void testSave()throws Exception{
String testSaveXml = "useDom4j/test/config/testSave.xml";
testSaveXml = classPath+filese+testSaveXml;
File file = getFile(testSaveXml);
//Save file.xml
XMLWriter writer = new XMLWriter(new FileOutputStream( file ));
writer.write(doc);
writer.flush();
}
private File getFile(String testSaveXml) throws IOException {
File file = null ;
URL url = clo.getResource(testSaveXml);
if(url==null){
file = new File(testSaveXml);
file.createNewFile();
}else{
file = new File( url.getFile() );
}
return file;
}
}
引用：http://freezingxu.blog.com.cn/archives/2006/1892647.shtml
/**
* 对指定的节点增加属性和文本
* @param elmt
* @param name
* @param value
* @param text
* @return
*/
public Element addAttribute(Element elmt,String name,String value){
elmt.addAttribute(name,value);
return elmt;
}
/**
* 修改指定节点的属性和文本
* @param elmt
* @param name
* @param value
* @param text
* @return
*/
public Element setAttribute(Element elmt,String name,String value){
Attribute attribute = elmt.attribute(name);
//attribute.setName(name);
attribute.setValue(value);
List list = new ArrayList();
list.add(attribute);
elmt.setAttributes(list);
return elmt;
}
/**
* 删除指定节点的指定属性
* @param elmt
* @param name
* @return
*/
public Element removeAttribute(Element elmt,String name){
elmt.remove(elmt.attribute(name));
return elmt;
}
/**
* 输出为文件
* @param doc
* @throws IOException
*/
public void writeFile(Document doc) throws IOException{
FileWriter out = new FileWriter( "d:/newQuery.xml" );
doc.write(out);
out.flush();
out.close();
}