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本文详细介绍Java的文档对象模型 JDOM (Java Document Object Model)提供了一个完整的用于访问基于Java的解决方案 JDOM是用Java代码控制 输出XML 数据来完成这项工作的 在JDOM上明确规定了使用一个Java代码如何修改XML文档 我们首先需要下载JDOM的压缩文件并添加到项目库文件夹中 下面是对XML文件进行修改

sample xml

first subtag

second tag

下面的Java代码用于更新或修改一个XML 文件

import java io File;

import java io FileWriter;

import jdom Document;

import jdom Element;

import jdom input SAXBuilder;

import jdom output XMLOutputter;

/**

* @author giftsam

*/

public class XMLModifier

{

/**

* This method is used to modify the data s of an XML file

*/

private void modifyXML()

{

try

{

/**

* Initializing the SAXBuilder class

*/

SAXBuilder builder = new SAXBuilder();

String filePath = E: + File separator + xml + File separator + sample xml ;

System out println( File path is: + filePath);

File file = new File(filePath);

if (file exists())

{

Document document = (Document) builder build(file);

/**

* Get the root element from the document class instance and from the root element get all the child elements and

* replace the appropriate values

*/

Element root = document getRootElement();

Element firstElement = root getChild( firsttag );

f irstElement getAttribute( tag ) setValue( file );

firstElement getChild( firstsubelement ) setText( test );

Element secondElement = root getChild( secondtag );

secondElement setText( This is the second tag );

/**

* Print the modified xml document

*/

String  xmlFileData= new XMLOutputter() outputString(document);

System out println( Modified XML file is : + xmlFileData);

/**

* Modify the inal document using FileWritter

*/

FileWriter fileWriter = new FileWriter(file);

fileWriter write(des);

fileWriter close();

}

else

{

System out println( File does not exist );

}

}

catch (Exception ex)

{

ex printStackTrace();

}

}

public static void main(String argS[])

{

try

{

new XMLModifier() modifyXML();

}

catch (Exception ex)

{

ex printStackTrace();

}

}

}

下面的是修改后的XML文件

sample xml(Modified)

This is the first sub tag

This is the second tag

本文提供了一个JDOM用简单的Java程序来修改XML文件的方法 CT 希望这篇文章能对大家有所帮助 lishixinzhi/Article/program/Java/hx/201311/25809

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