java中利用dom4j对XML文档的创建、解析、查找、修改、保存等操作

前两天,在java项目中写了一些关于对XML文档的操作,利用dom4j对XML文档的创建、解析、查找、修改、保存,校验等操作。以下代码供有需要的朋友参考。

import java.io.File;

import java.io.FileNotFoundException;import java.io.FileOutputStream;

import java.io.IOException;

importjava.io.OutputStreamWriter;

import java.util.Iterator;

import org.dom4j.Document;

importorg.dom4j.DocumentException;

importorg.dom4j.DocumentHelper;

import org.dom4j.Element;

import org.dom4j.io.OutputFormat;

importorg.dom4j.io.SAXReader;

importorg.dom4j.io.XMLWriter;

importorg.xml.sax.SAXException;

/***

*JDK版本：jdk5.0

*利用dom4j对XML文档的创建、解析、查找、修改、保存等操作。

*@authorJackChen

*日期：2007-05-17

*/

public class TestXML {

 public static final String SAVE_XMLFILE_PATH = "saveXML.xml";

 public TestXML() {

 }

/**

*创建一个XML文档

*@returndoc返回该文档

*/

publicDocumentcreateXMLDocument(){

Documentdoc=null;

doc=DocumentHelper.createDocument();

doc.addComment("editedwithXMLSpyv2005rel.3U(http://www.altova.com)by()");

//doc.addDocType("class","//ByJackChen","saveXML.xsd");

Elementroot=doc.addElement("class");

Elementcompany=root.addElement("company");

Elementperson=company.addElement("person");

person.addAttribute("id","11");

person.addElement("name").setText("JackChen");

person.addElement("sex").setText("男");

person.addElement("date").setText("2001-04-01");

person.addElement("email").setText("[email protected]");

  person.addElement("QQ").setText("2366001");

  return doc;

}

/**

*解析XML文档

*@paramxmlFile

*@returnXML文档

*@throwsDocumentException

*@throwsFileNotFoundException

*/

publicDocumentparse(StringxmlFile)throwsDocumentException,FileNotFoundException{

SAXReaderreader=newSAXReader();

Documentdoc=reader.read(newFile(xmlFile));

returndoc;

}

/***

*将XML文档输出到控制台

*@paramdoc

*@throwsIOException

*/

publicvoidprintDocument(Documentdoc)throwsIOException{

OutputFormatformat=OutputFormat.createPrettyPrint();

XMLWriterwriter=newXMLWriter(newOutputStreamWriter(System.out),format);

writer.write(doc);

writer.close();

 }

 /**

*保存XML文档

*@paramdoc

*@throwsIOException

*/

publicvoidsaveDocument(Documentdoc)throwsIOException{

OutputFormatformat=OutputFormat.createPrettyPrint();

XMLWriterwriter=newXMLWriter(newFileOutputStream(SAVE_XMLFILE_PATH),format);

writer.write(doc);

writer.close();

}

/**

*验证XML文档和schemaURL

*@paramxmlFile

*@paramschemaUrl

*@returnXML文档

*@throwsSAXException

*@throwsDocumentException

*/

publicDocumentvalidate(StringxmlFile,StringschemaUrl)throwsSAXException,DocumentException{

SAXReaderreader=newSAXReader(true);

System.out.println("validateby:"+schemaUrl);

reader.setFeature("http://apache.org/xml/features/validation/schema",true);

reader.setFeature("http://xml.org/sax/features/validation",true);

reader.setProperty("http://apache.org/xml/properties/schema/external-noNamespaceSchemaLocation",

schemaUrl);

reader.setFeature("http://apache.org/xml/features/validation/schema-full-checking",

true);

Documentdoc=reader.read(newFile(xmlFile));

returndoc;

}

/**

*查找xml

*@paramdoc

*@throwsIOException

  */

 public void listDocument(Document doc) throws IOException{

Stringxpath="/class/company/person[@id="11"]";

Elementlist=(Element)doc.selectSingleNode(xpath);

  System.out.println(list.getName());

//  if (list.element("name").getName().equals("name")) {

  System.out.println("name:"+list.element("name").getText());

System.out.println("sex:"+list.element("sex").getText());

System.out.println("date:"+list.element("date").getText());

System.out.println("email:"+list.element("email").getText());

System.out.println("QQ:"+list.element("QQ").getText());

}

/***

*利用XPATH查找元素，然后修改

*@paramdoc

*@throwsIOException

*/

publicvoidupdateDocByXPATH(Documentdoc)throwsIOException{

Stringxpath="/class/company/person[@id="11"]";

Elementlist=(Element)doc.selectSingleNode(xpath);

  System.out.println(list.getName());

//  if (list.element("name").getName().equals("name")) {

  list.element("name").setText("1123");

list.element("sex").setText("男");

list.element("date").setText("1800-01-01");

list.element("email").setText("[email protected]");

list.element("QQ").setText("12345");

//}

  saveDocument(doc);

 }

 /**

*从根节点遍历，来修改XML文件,并保存。

*@paramdoc

*@throwsIOException

*/

publicvoidupdateDocument(Documentdoc)throwsIOException{

Elementroot=doc.getRootElement();

//System.out.println(root.asXML());

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

Elemente=(Element)i.next();

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

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

if(e.element("person").element("name").getName().equals("name")){

e.element("person").element("name").setText("ChenJI");

    e.element("person").element("QQ").setText("123456");

   }

System.out.println(e.getText().toString());

}

saveDocument(doc);

}

}