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XML解析SAX

youngturk — Wed, 10 Jul 2013 07:03:00 GMT

public List xmlElements(String xmlDoc) {
        //创徏一个新的字�W�串
        StringReader read = new StringReader(xmlDoc);
        //创徏新的输入源SAX 解析器将使用 InputSource 对象来确定如何读�?nbsp;XML 输入
        InputSource source = new InputSource(read);
        //创徏一个新的SAXBuilder
        SAXBuilder sb = new SAXBuilder();
        List list = new ArrayList();
        try {
            //通过输入源构造一个Document
            Document doc = sb.build(source);
            //取的根元�?/span>
            Element root = doc.getRootElement();
            System.out.println(root.getName());//输出根元素的名称�Q�测试）
            //得到根元素所有子元素的集�?/span>
            List jiedian = root.getChildren();
            //获得XML中的命名�I�间�Q�XML中未定义可不写）
            Namespace ns = root.getNamespace();
            Element et = null;
            DataModel dataModel = new DataModel();
            Collections c ;
            Ctnfee ctnfee = null;
            for(int i=0;i<jiedian.size();i++){
                et = (Element) jiedian.get(i);//循环依次得到子元�?/span>
                ctnfee = new Ctnfee();
                /**//*
                 * 无命名空间定义时
                 * et.getChild("users_id").getText();
                 * et.getChild("users_address",ns).getText()
                 */
                /*System.out.println(et.getChild("users_id",ns).getText());
                System.out.println(et.getChild("users_address",ns).getText());*/
                System.out.println(et.getChild("p_id",ns).getText());
                System.out.println(et.getChild("ctnno",ns).getText());
                ctnfee.setP_id(et.getChild("p_id",ns).getText());
                ctnfee.setCtnno(et.getChild("ctnno",ns).getText());
                ctnfee.setFee_type(et.getChild("fee_type",ns).getText());
                ctnfee.setStart_time(et.getChild("start_time",ns).getText());
                ctnfee.setEnd_time(et.getChild("end_time",ns).getText());
                ctnfee.setFee(Double.parseDouble(et.getChild("fee",ns).getText()));
                ctnfee.setFee_count(Double.parseDouble(et.getChild("fee_count",ns).getText()));
                ctnfee.setCpid(et.getChild("cpid",ns).getText());
                ctnfee.setFee_name(et.getChild("fee_name",ns).getText());
                ctnfee.setFee_rate_id(Double.parseDouble(et.getChild("fee_rate_id",ns).getText()));
                ctnfee.setJffs(et.getChild("jffs",ns).getText());
                ctnfee.setIf_hand(et.getChild("if_hand",ns).getText());
                ctnfee.setSfid(et.getChild("sfid",ns).getText());
                ctnfee.setWt_company(et.getChild("wt_company",ns).getText());
                ctnfee.setOpid(et.getChild("opid",ns).getText());
                ctnfee.setCy(et.getChild("cy",ns).getText());
                ctnfee.setIf_bf(et.getChild("if_bf",ns).getText());
                ctnfee.setDays_count(et.getChild("days_count",ns).getText());
                ctnfee.setIf_collect(Double.parseDouble(et.getChild("if_collect",ns).getText()));
                ctnfee.setIf_dd(et.getChild("if_dd",ns).getText());
                ctnfee.setDd_fee_name(et.getChild("dd_fee_name",ns).getText());
                ctnfee.setSpec_sign(et.getChild("spec_sign",ns).getText());

                list.add(ctnfee);
                counttotal = counttotal +Double.parseDouble(et.getChild("fee_count",ns).getText());
            }
            /**//*
             * 如要�?lt;row>下的子元素的名称
             */
            et = (Element) jiedian.get(0);
            List zjiedian = et.getChildren();
            for(int j=0;j<zjiedian.size();j++){
                Element xet = (Element) zjiedian.get(j);
                System.out.println(xet.getName());
            }
        } catch (JDOMException e) {
            // TODO 自动生成 catch �?/span>
            e.printStackTrace();
        } catch (IOException e) {
            // TODO 自动生成 catch �?/span>
            e.printStackTrace();
        }
        return list;
    }

youngturk 2013-07-10 15:03 发表评论

youngturk — Mon, 08 Apr 2013 09:20:00 GMT

import java.io.IOException;
import java.io.StringReader;
import java.util.List;

import org.jdom.Document;
import org.jdom.Element;
import org.jdom.JDOMException;
import org.jdom.Namespace;
import org.jdom.input.SAXBuilder;
import org.xml.sax.InputSource;

public class TestXML {
    public List xmlElements(String xmlDoc) {
        //创徏一个新的字�W�串
        StringReader read = new StringReader(xmlDoc);
        //创徏新的输入源SAX 解析器将使用 InputSource 对象来确定如何读�?XML 输入
        InputSource source = new InputSource(read);
        //创徏一个新的SAXBuilder
        SAXBuilder sb = new SAXBuilder();
        try {
            //通过输入源构造一个Document
            Document doc = sb.build(source);
            //取的根元�?br />            Element root = doc.getRootElement();
            System.out.println(root.getName());//输出根元素的名称�Q�测试）
            //得到根元素所有子元素的集�?br />            List jiedian = root.getChildren();
            //获得XML中的命名�I�间�Q�XML中未定义可不写）
            Namespace ns = root.getNamespace();
            Element et = null;
            for(int i=0;i                et = (Element) jiedian.get(i);//循环依次得到子元�?br />                /**//*
                 * 无命名空间定义时
                 * et.getChild("users_id").getText();
                 * et.getChild("users_address",ns).getText()
                 */
                /*System.out.println(et.getChild("users_id",ns).getText());
                System.out.println(et.getChild("users_address",ns).getText());*/
                System.out.println(et.getChild("p_id",ns).getText());
                System.out.println(et.getChild("ctnno",ns).getText());
            }
            /**//*
             * 如要�?lt;row>下的子元素的名称
             */
            et = (Element) jiedian.get(0);
            List zjiedian = et.getChildren();
            for(int j=0;j                Element xet = (Element) zjiedian.get(j);
                System.out.println(xet.getName());
            }
        } catch (JDOMException e) {
            // TODO 自动生成 catch �?br />            e.printStackTrace();
        } catch (IOException e) {
            // TODO 自动生成 catch �?br />            e.printStackTrace();
        }
        return null;
    }
    public static void main(String[] args){
    TestXML doc = new TestXML();
        String xml = ""+
        "           ""+
              "1001     "+
              "wangwei   "+
              "80        "+
              "1001�?nbsp; "+
           ""+
           ""+
              "1002     "+
              "wangwei   "+
              "80        "+
              "1002�?nbsp; "+
           ""+
        "";
        String xml1 = "" +
          "" +
          " " +
          "  JD1302130002" +
          "  CXDU1499549" +
          "  �?lt;/fee_type>" +
          "  2013-02-09 00:00:00" +
          "  2013-02-13 00:00:00" +
          "  4" +
          "  16" +
          "  " +
          "  堆存�?lt;/fee_name>" +
          "  " +
          "  1" +
          "  0" +
          "  FDZT1302180104" +
          "  QT" +
          "  928" +
          "  D" +
          "  " +
          "  4" +
          "  1" +
          "  " +
          "  " +
          "  五洲代垫" +
          " " +
          " " +
          "  JD1302130002" +
          "  CXDU1499549" +
          "  �?lt;/fee_type>" +
          "  2013-02-13 00:00:00" +
          "  2013-02-20 00:00:00" +
          "  4" +
          "  32" +
          "  " +
          "  堆存�?lt;/fee_name>" +
          "  67" +
          "  1" +
          "  0" +
          "  FDZT1302180104" +
          "  QT" +
          "  928" +
          "  D" +
          "  " +
          "  8" +
          "  1" +
          "  " +
          "  " +
          "  " +
          " " +
          "";
        doc.xmlElements(xml1);
    }
}

youngturk 2013-04-08 17:20 发表评论

Dom4j全部实例

youngturk — Fri, 15 Jun 2012 03:14:00 GMT

*Attribute*	Attribute定义了XML的属�?/div>
*Branch*	Branch��够包含子节点的节点如XML元素(Element)和文�?Docuemnts)定义了一个公��q��行�ؓ�Q?/div>
*CDATA*	CDATA 定义了XML CDATA 区域
CharacterData	CharacterData是一个标识接口，标识��Z��字符的节炏V��如CDATA�Q�Comment, Text.
*Comment*	Comment 定义了XML注释的行�?/div>
*Document*	定义了XML文档
*DocumentType*

DocumentType 定义XML DOCTYPE声明
*Element*	Element定义XML 元素
*ElementHandler*	ElementHandler定义�?Element 对象的处理器
*ElementPath*	�?ElementHandler 使用�Q�用于取得当前正在处理的路径层次信息
*Entity*	Entity定义 XML entity
*Node*	Node为所有的dom4j中XML节点定义了多态行�?/div>
NodeFilter	NodeFilter 定义了在dom4j节点中��生的一个��o镜或谓词的行为（predicate�Q?/div>
*ProcessingInstruction*	ProcessingInstruction 定义 XML 处理指��o.
*Text*	Text 定义XML 文本节点.
*Visitor*	Visitor 用于实现Visitor模式.
*XPath*	XPath

要想弄懂�q�套接口�Q�关键的是要明白接口的��承关�p�：

interface java.lang.Cloneable
- interface org.dom4j.Node

interface org.dom4j.Attribute
interface org.dom4j.Branch

interface org.dom4j.Document
interface org.dom4j.Element

interface org.dom4j.CharacterData
- interface org.dom4j.CDATA
- interface org.dom4j.Comment
- interface org.dom4j.Text
interface org.dom4j.DocumentType
interface org.dom4j.Entity
interface org.dom4j.ProcessingInstruction

�Q�． ��d��q�解析XML文档�Q?/div>

��d��XML文档主要依赖于org.dom4j.io包，其中提供DOMReader和SAXReader两类不同方式�Q�而调用方式是一��L(f��ng)��。这��是依靠接口的好处�?/div>

// 从文件读取XML�Q�输入文件名�Q�返回XML文档

public Document read(String fileName) throws MalformedURLException, DocumentException {

SAXReader reader = new SAXReader();

Document document = reader.read(new File(fileName));

return document;

}

其中�Q�reader的read�Ҏ(gu��)��是重载的�Q�可以从InputStream, File, Url�{�多�U�不同的源来��d��。得到的Document对象��带表了整个XML。根据本��q��l�验�Q�读取的字符�~�码是按照XML文�g头定义的�~�码来�{换。如果遇��Cؕ码问题，注意要把各处的编码名�U�C��持一致即可�?br />

�Q�．取得Root节点

��d��后的�W�二步，��是得到Root节点。熟�(zh��n)�XML的�h都知道，一切XML分析都是从Root元素开始的�?/div>

　 public Element getRootElement(Document doc){

return doc.getRootElement();

}

�Q�．遍历XML�?/div>

DOM4J提供臛_��3�U�遍历节点的�Ҏ(gu��)��Q?/div>

1) 枚�D(Iterator)

// 枚�D所有子节点

for ( Iterator i = root.elementIterator(); i.hasNext(); ) {

Element element = (Element) i.next();

// do something

}

// 枚�D名称为foo的节�?/div>

for ( Iterator i = root.elementIterator(foo); i.hasNext();) {

Element foo = (Element) i.next();

// do something

}

// 枚�D属�?/div>

for ( Iterator i = root.attributeIterator(); i.hasNext(); ) {

Attribute attribute = (Attribute) i.next();

// do something

}

2)递归

递归也可以采用Iterator作�ؓ枚�D手段�Q�但文档中提供了另外的做�?/div>

public void treeWalk() {

treeWalk(getRootElement());

}

public void treeWalk(Element element) {

for (int i = 0, size = element.nodeCount(); i < size; i++) {

Node node = element.node(i);

if (node instanceof Element) {

treeWalk((Element) node);

} else { // do something....

}

3) Visitor模式

最令�h兴奋的是DOM4J对Visitor的支持，�q�样可以大大�~�减代码量，�q�且清楚易懂。了解设计模式的人都知道�Q�Visitor是GOF设计模式之一。其主要原理��是两种�c�M��怿�有对方的引用�Q��ƈ且一�U�作为Visitor去访问许多Visitable。我们来看DOM4J中的Visitor模式(快速文档中没有提供)

只需要自定一个类实现Visitor接口卛_��?/div>

　 public class MyVisitor extends VisitorSupport {

public void visit(Element element){

System.out.println(element.getName());

}

public void visit(Attribute attr){

System.out.println(attr.getName());

}

调用�Q?nbsp; root.accept(new MyVisitor())

Visitor接口提供多种Visit()的重载，�Ҏ(gu��)��XML不同的对象，��采用不同的方式来访问。上面是�l�出的Element和Attribute的简单实玎ͼ�一般比较常用的��是�q�两个。VisitorSupport是DOM4J提供的默认适配器，Visitor接口的Default Adapter模式�Q�这个模式给��Z��各种visit(*)的空实现�Q�以便简化代码�?/div>

注意�Q�这个Visitor是自动遍历所有子节点的。如果是root.accept(MyVisitor)�Q�将遍历子节炏V��我�W�一�ơ用的时候，认�ؓ是需要自己遍历，便在递归中调用Visitor�Q�结果可惌��知�?/div>

4. XPath支持

DOM4J对XPath有良好的支持�Q�如讉K��一个节点，可直接用XPath选择�?/div>

public void bar(Document document) {

List list = document.selectNodes( //foo/bar );

Node node = document.selectSingleNode(//foo/bar/author);

String name = node.valueOf( @name );

}

例如�Q�如果你��x��找XHTML文档中所有的��链接，下面的代码可以实玎ͼ�

public void findLinks(Document document) throws DocumentException {

List list = document.selectNodes( //a/@href );

for (Iterator iter = list.iterator(); iter.hasNext(); ) {

Attribute attribute = (Attribute) iter.next();

String url = attribute.getValue();

}

5. 字符串与XML的�{�?/div>

有时候经常要用到字符串�{换�ؓXML或反之，

// XML转字�W�串

　 Document document = ...;

String text = document.asXML();

// 字符串�{XML

String text = James ;

Document document = DocumentHelper.parseText(text);

6 用XSLT转换XML

public Document styleDocument(

Document document,

String stylesheet

) throws Exception {

// load the transformer using JAXP

TransformerFactory factory = TransformerFactory.newInstance();

Transformer transformer = factory.newTransformer(

new StreamSource( stylesheet )

);

// now lets style the given document

DocumentSource source = new DocumentSource( document );

DocumentResult result = new DocumentResult();

transformer.transform( source, result );

// return the transformed document

Document transformedDoc = result.getDocument();

return transformedDoc;

}

7. 创徏XML

一般创建XML是写文�g前的工作�Q�这��像StringBuffer一样容易�?/div>

public Document createDocument() {

Document document = DocumentHelper.createDocument();

Element root = document.addElement(root);

Element author1 =

root

.addElement(author)

.addAttribute(name, James)

.addAttribute(location, UK)

.addText(James Strachan);

Element author2 =

root

.addElement(author)

.addAttribute(name, Bob)

.addAttribute(location, US)

.addText(Bob McWhirter);

return document;

}

8. 文�g输出

一个简单的输出�Ҏ(gu��)��是将一个Document或�Q何的Node通过write�Ҏ(gu��)��输出

FileWriter out = new FileWriter( foo.xml );

document.write(out);

如果你想改变输出的格式，比如��化输出或羃减格式，可以用XMLWriter�c?/div>

public void write(Document document) throws IOException {

// 指定文�g

XMLWriter writer = new XMLWriter(

new FileWriter( output.xml )

);

writer.write( document );

writer.close();

// ��化格式

OutputFormat format = OutputFormat.createPrettyPrint();

writer = new XMLWriter( System.out, format );

writer.write( document );

// �~�减格式

format = OutputFormat.createCompactFormat();

writer = new XMLWriter( System.out, format );

writer.write( document );

}

5.使用ElementHandler

XmlHandler.java

import java.io.File;

import org.dom4j.DocumentException;

import org.dom4j.Element;

import org.dom4j.ElementHandler;

import org.dom4j.ElementPath;

import org.dom4j.io.SAXReader;

public class XmlHandler {

public static void main(String[] args) {

SAXReader saxReader = new SAXReader();

File file = new File("students.xml");

try {

// ��d��一�?/span>ElementHandler实例�?/span>

saxReader.addHandler("/students/student", new StudentHandler());

saxReader.read(file);

} catch (DocumentException e) {

System.out.println(e.getMessage());

}

/**

* 定义StudentHandler处理器类�Q�对元素�q�行处理�?/span>

private static class StudentHandler implements ElementHandler {

public void .Start(ElementPath path) {

Element elt = path.getCurrent();

System.out.println("Found student: " + elt.attribut.ue("sn"));

// ��d��对子元素的处理器�?/span>

path.addHandler("name", new NameHandler());

}

public void .End(ElementPath path) {

// �U�除对子元素的处理器�?/span>

path.removeHandler("name");

}

/**

* 定义NameHandler处理器类�Q�对�?/span>子元素进行处理�?/span>

private static class NameHandler implements ElementHandler {

public void .Start(ElementPath path) {

System.out.println("path : " + path.getPath());

}

public void .End(ElementPath path) {

Element elt = path.getCurrent();

// 输出元素的名字和它的文本内容�?/span>

System.out.println(elt.getName() + " : " + elt.getText());

}

youngturk 2012-06-15 11:14 发表评论

youngturk — Thu, 14 Jun 2012 14:45:00 GMT

public class Myvisitor extends VisitorSupport {
    /**
     * 对于属性节点，打印属性的名字和�?br />     */
    public void visit(Attribute node) {
        System.out.println("attribute : " + node.getName() + " = "
               + node.getValue());
    }

    /**
     * 对于处理指��o节点�Q�打印处理指令目标和数据
     */
    public void visit(ProcessingInstruction node) {
        System.out.println("PI : " + node.getTarget() + " "
               + node.getData());
    }

    /**
     * 对于元素节点�Q�判断是否只包含文本内容�Q�如是，则打印标记的名字�?nbsp;元素的内宏V��如果不是，则只打印标记的名�?br />     */
    public void visit(Element node) {
        if (node.isTextOnly())
           System.out.println("element : " + node.getName() + " = "
                  + node.getText());
        else
           System.out.println("--------" + node.getName() + "--------");
    }

    @Test
    public void test() throws DocumentException {
        SAXReader saxReader = new SAXReader();
        Document document = saxReader.read("src/book.xml");
        // dom4jParser.traversalDocumentByIterator();
        document.accept(new Myvisitor());
     }

youngturk 2012-06-14 22:45 发表评论

dom4j解析字符串传唤成xml

youngturk — Thu, 14 Jun 2012 06:44:00 GMT

oc = DocumentHelper.parseText(xml); // ��字�W�串转�ؓXML

map.put("title", title);

                Iterator iters = recordEle.elementIterator("script");

String title = recordEle.elementTextTrim("title"); // 拿到head节点下的子节点title�?/span>
Iterator iters = map.keySet().iterator();
        while (iters.hasNext()) {
            String key = iters.next().toString(); // 拿到�?/span>
            String val = map.get(key).toString(); // 拿到�?/span>
            System.out.println(key + "=" + val);

List list = (document.selectNodes("/books/book/@show" )); // xpath解析
           Iterator iter = list.iterator();
           while(iter.hasNext()){
               Attribute attribute = (Attribute)iter.next();
               if(attribute.getValue().equals("yes")){
               attribute.setValue("no");
               }

Element ownerElement = (Element)iter.next();

Element dateElement = ownerElement.addElement("date");
dateElement.setText("2004-09-11");

}

youngturk 2012-06-14 14:44 发表评论

youngturk — Thu, 14 Jun 2012 00:56:00 GMT

books.xml:

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

        <book show="yes" url="lucene.net">
            <title id="456">Lucene Studingtitle>
        book>
        <book show="yes" url="dom4j.com">
            <title id="123">Dom4j Tutorialstitle>
        book>
        <book show="no" url="spring.org">
            <title id="789">Spring in Actiontitle>
        book>
        <owner>O'Reilly
    books>

public void parseBooks(){

        SAXReader reader = new SAXReader();
        try {
            Document doc = reader.read("books.xml");
            Node root = doc.selectSingleNode("/books");
            List list = root.selectNodes("book[@url='dom4j.com']");

            for(Object o:list){

                Element e = (Element) o;
                String show=e.attributeValue("show");
                System.out.println("show = " + show);
            }

        } catch (Exception e) {
            e.printStackTrace();
        }
    }
Document doc = reader.read("books.xml");的意思是加蝲XML文档�Q�此是可以用doc.asXML()来查看，它将打印整个xml文档�?br />
  Node root = doc.selectSingleNode("/books");是读取刚才加载的xml文档内的books节点下的所有内容，对于本例也是整个xml文档�?br />  当然我们也可以加�?/span>/books下的某一个节点，如：book节点
Node root = doc.selectSingleNode("/books/book");
或：Node root = doc.selectSingleNode("/books/*");
注意�Q�如果有多个book节点�Q�它只会��d��W�一�?br />root.asXML()��打华ͼ�
<book show="yes" url="lucene.net">
        <title id="456">Lucene Studingtitle>
book>

  既然加蝲了这么多�Q�那我怎么�_��的得到我惌��的节点呢�Q�别急，看下面：
List list = root.selectNodes("book[@url='dom4j.com']");
它的意思就是读取books节点下的book节点�Q�且book的节点的url属性�ؓdom4j.com
��Z��么��用list来接收呢�Q�如果有两个book节点�Q�且它们的url属性都为dom4j.com�Q�此时就��闭到l(f��)ist里了�?br />
  如果惌��取books下的所有book节点�Q�可以这��P��
List list = root.selectNodes("book");

  如果惌��取books节点下的book节点下的title节点�Q�可以这��P��
List list2 = root.selectNodes("book[@url='dom4j.com']/title[@id='123']");

  注意�Q�selectNodes()参数的格式：
  节点名[@属性名='属性�?/span>']�Q�如�Q�book[@url='dom4j.com']
  如果有多个节点，�?#8220;/”分开�Q�如�Q�book[@url='dom4j.com']/title[@id='123']

  最�q�就是读取封闭在List里的内容了，可以用Node来读取，也可以用Element来�{换�?br />attributeValue("属�?/span>")是读取该节点的属性�?br />getText()是读取节点的的内宏V�?br />

youngturk 2012-06-14 08:56 发表评论

开发dom4j除了需要其1.6.1jar包外�Q�还需要jaxen-1.1.1jar

youngturk — Wed, 13 Jun 2012 13:43:00 GMT

开发dom4j除了需要其1.6.1jar包外�Q�还需要jaxen-1.1.1jar

在jdk1.6�?br />

JAXEN�Q�对XPath的支持）�Q?/span>http://dist.codehaus.org/jaxen/distributions/jaxen-1.1.1.zip

youngturk 2012-06-13 21:43 发表评论

dom4J 递归解析

youngturk — Wed, 13 Jun 2012 06:07:00 GMT

book.xml:
xml version="1.0" encoding="UTF-8"?>
<INVENTORY name="INAtrabute">
    <BOOK name="textBook">
        <TITLE>
            The Adventures of Huckleberry Finn
            <FEN>mast
                <MIAO>
                miao
                MIAO>
            FEN>
        TITLE>
        <AUTHOR>Mark Twain
            <FEN>mast1
                <MIAO>
                miao1
                MIAO>
            FEN>
        AUTHOR>
        <BINDING>mass market paperbackBINDING>
        <PAGES>298PAGES>
    <price>209yuanprice>
    BOOK>
    <BOOK>
        <TITLE name="testName">Leaves of GrassTITLE>
        <AUTHOR>Walt WhitmanAUTHOR>
        <BINDING>hardcoverBINDING>
        <PAGES>462PAGES>
    BOOK>
INVENTORY>

解析代码�Q?br />@Test
    public void treeWalk() throws DocumentException{
        SAXReader reader = new SAXReader();
        Document document = reader.read(new File("src/book.xml"));
        Element element= document.getRootElement();
        treeWalk(element);

    }
    public void treeWalk(Element element){
        for(int i = 0 , size = element.nodeCount();i<size;i++){
            Node node = element.node(i);

            if(node instanceof Element){
                treeWalk((Element)node);
                String value = node.getName();
                System.out.println(value);
            }else{

            }
        }
    }

youngturk 2012-06-13 14:07 发表评论

youngturk — Tue, 22 May 2012 02:52:00 GMT

1.加蝲XML文档
SAXReader reader = new SAXReader();
Document doc = reader.read("src/book.xml");

2.获得根元�?br />Node root = doc.getRootElement();
�?Element r = doc.getRootElement();

3.取得某节点的单个子节�?br />Element root = root.getRootElement();
Element memberElm=root.element("member");// "member"是节点名

4.取得节点的文�?br />String text=memberElm.getText();

5.取得某节点下名�ؓ"book"的所有字节点�q�进行遍�?br />Element r = doc.getRootElement();
List titles = r.elements("book");
for(int i=0;i System.out.println(((Element)titles.get(i)).asXML());
}
6.在某节点下添加子节点.
Element ageElm = newMemberElm.addElement("age");

7.讄��节点文字.
ageElm.setText("29");

8.删除某节�?
parentElm.remove(childElm);// childElm是待删除的节�?parentElm是其父节�?/p>

�?属性相�?
1.取得某节点下的某属�?br />            Element root=document.getRootElement();
            Attribute attribute=root.attribute("size");// 属性名name
2.取得属性的文字
            String text=attribute.getText();
也可以用:
String text2=root.element("name").attributeValue("firstname");�q�个是取得根节点下name字节点的属性firstname的�?

3.遍历某节点的所有属�?br />            Element root=document.getRootElement();
            for(Iterator it=root.attributeIterator();it.hasNext();){
                Attribute attribute = (Attribute) it.next();
                String text=attribute.getText();
                System.out.println(text);
            }
4.讄��某节点的属性和文字.
newMemberElm.addAttribute("name", "sitinspring");
5.讄��属性的文字
            Attribute attribute=root.attribute("name");
            attribute.setText("sitinspring");
6.删除某属�?br />            Attribute attribute=root.attribute("size");// 属性名name
            root.remove(attribute);
�?��文档写入XML文�g.
1.文档中全��?不设�|�编�?直接写入的�Ş�?
XMLWriter writer = new XMLWriter(new FileWriter("output.xml"));
writer.write(document);
writer.close();
2.文档中含有中�?讄��~�码格式写入的�Ş�?
            OutputFormat format = OutputFormat.createPrettyPrint();
            format.setEncoding("GBK");    // 指定XML�~�码
            XMLWriter writer = new XMLWriter(new FileWriter("output.xml"),format);

            writer.write(document);
            writer.close();
�?字符串与XML的�{�?br />1.��字�W�串转化为XML
String text = " sitinspring ";
Document document = DocumentHelper.parseText(text);
2.��文档或节点的XML转化为字�W�串.
            SAXReader reader = new SAXReader();
            Document document = reader.read(new File("input.xml"));
            Element root=document.getRootElement();
            String docXmlText=document.asXML();
            String rootXmlText=root.asXML();
            Element memberElm=root.element("member");
            String memberXmlText=memberElm.asXML();
�?使用XPath快速找到节�?
��d��的XML文档�C�Z��

MemberManagement

    PRJ1
    PRJ2
    PRJ3
    PRJ4


      org.eclipse.jdt.core.javabuilder




    org.eclipse.jdt.core.javanature

使用XPath快速找到节点project.
public static void main(String[] args){
    SAXReader reader = new SAXReader();

    try{
      Document doc = reader.read(new File("sample.xml"));

      List projects=doc.selectNodes("/projectDescription/projects/project");

      Iterator it=projects.iterator();

      while(it.hasNext()){
        Element elm=(Element)it.next();
        System.out.println(elm.getText());
      }

    }
    catch(Exception ex){
       ex.printStackTrace();
    }
}

youngturk 2012-05-22 10:52 发表评论

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XML解析SAX

Dom4j全部实例

dom4j解析 字符串传唤成xml

开发dom4j除了需要其1.6.1jar包外�Q�还需要jaxen-1.1.1jar

dom4J 递归解析

dom4j解析字符串传唤成xml