1
package
dom;
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3
import
java.io.File;
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import
java.io.FileWriter;
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import
java.util.Iterator;
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import
java.util.List;
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import
org.dom4j.Attribute;
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import
org.dom4j.Document;
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import
org.dom4j.DocumentHelper;
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import
org.dom4j.Element;
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import
org.dom4j.io.OutputFormat;
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import
org.dom4j.io.SAXReader;
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import
org.dom4j.io.XMLWriter;
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/** */
/**
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*
@author
~@_@
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*/
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public
class
SimpleDom4j
{
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/** */
/**
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* 建立一个XML文档,文档名由输入属性决定
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*
@param
filename 需建立的文件名
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*
@return
返回操作结果, 0表失败, 1表成功
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*/
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public
int
createXMLFile(String filename)
{
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/** */
/**
返回操作结果, 0表失败, 1表成功
*/
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int
returnValue
=
0
;
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/** */
/**
建立document对象
*/
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Document document
=
DocumentHelper.createDocument();
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/** */
/**
建立XML文档的根books
*/
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Element booksElement
=
document.addElement(
"
books
"
);
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/** */
/**
加入一行注释
*/
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booksElement.addComment(
"
This is a test for dom4j, holen, 2004.9.11
"
);
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/** */
/**
加入第一个book节点
*/
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Element bookElement
=
booksElement.addElement(
"
book
"
);
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/** */
/**
加入show属性内容
*/
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bookElement.addAttribute(
"
show
"
,
"
yes
"
);
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/** */
/**
加入title节点
*/
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Element titleElement
=
bookElement.addElement(
"
title
"
);
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/** */
/**
为title设置内容
*/
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titleElement.setText(
"
Dom4j Tutorials
"
);
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/** */
/**
类似的完成后两个book
*/
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bookElement
=
booksElement.addElement(
"
book
"
);
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bookElement.addAttribute(
"
show
"
,
"
yes
"
);
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titleElement
=
bookElement.addElement(
"
title
"
);
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titleElement.setText(
"
Lucene Studing
"
);
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bookElement
=
booksElement.addElement(
"
book
"
);
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bookElement.addAttribute(
"
show
"
,
"
no
"
);
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titleElement
=
bookElement.addElement(
"
title
"
);
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titleElement.setText(
"
Lucene in Action
"
);
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/** */
/**
加入owner节点
*/
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Element ownerElement
=
booksElement.addElement(
"
owner
"
);
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ownerElement.setText(
"
O'Reilly
"
);
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try
{
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/** */
/**
将document中的内容写入文件中
*/
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XMLWriter writer
=
new
XMLWriter(
new
FileWriter(
new
File(filename)));
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writer.write(document);
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writer.close();
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/** */
/**
执行成功,需返回1
*/
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returnValue
=
1
;
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}
catch
(Exception ex)
{
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ex.printStackTrace();
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}
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return
returnValue;
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}
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/** */
/**
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* 修改XML文件中内容,并另存为一个新文件
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* 重点掌握dom4j中如何添加节点,修改节点,删除节点
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*
@param
filename 修改对象文件
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*
@param
newfilename 修改后另存为该文件
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*
@return
返回操作结果, 0表失败, 1表成功
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*/
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public
int
ModiXMLFile(String filename, String newfilename)
{
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int
returnValue
=
0
;
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try
{
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SAXReader saxReader
=
new
SAXReader();
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Document document
=
saxReader.read(
new
File(filename));
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/** */
/**
修改内容之一: 如果book节点中show属性的内容为yes,则修改成no
*/
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/** */
/**
先用xpath查找对象
*/
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List list
=
document.selectNodes(
"
/books/book/@show
"
);
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Iterator iter
=
list.iterator();
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while
(iter.hasNext())
{
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Attribute attribute
=
(Attribute) iter.next();
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if
(attribute.getValue().equals(
"
yes
"
))
{
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attribute.setValue(
"
no
"
);
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}
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}
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/** */
/**
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* 修改内容之二: 把owner项内容改为Tshinghua
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* 并在owner节点中加入date节点,date节点的内容为2004-09-11,还为date节点添加一个属性type
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*/
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list
=
document.selectNodes(
"
/books/owner
"
);
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iter
=
list.iterator();
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if
(iter.hasNext())
{
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Element ownerElement
=
(Element) iter.next();
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ownerElement.setText(
"
Tshinghua
"
);
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Element dateElement
=
ownerElement.addElement(
"
date
"
);
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dateElement.setText(
"
2004-09-11
"
);
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dateElement.addAttribute(
"
type
"
,
"
Gregorian calendar
"
);
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}
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/** */
/**
修改内容之三: 若title内容为Dom4j Tutorials,则删除该节点
*/
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list
=
document.selectNodes(
"
/books/book
"
);
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iter
=
list.iterator();
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while
(iter.hasNext())
{
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Element bookElement
=
(Element) iter.next();
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Iterator iterator
=
bookElement.elementIterator(
"
title
"
);
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while
(iterator.hasNext())
{
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Element titleElement
=
(Element) iterator.next();
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if
(titleElement.getText().equals(
"
Dom4j Tutorials
"
))
{
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bookElement.remove(titleElement);
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}
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}
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}
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try
{
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/** */
/**
将document中的内容写入文件中
*/
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XMLWriter writer
=
new
XMLWriter(
new
FileWriter(
new
File(
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newfilename)));
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writer.write(document);
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writer.close();
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/** */
/**
执行成功,需返回1
*/
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returnValue
=
1
;
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}
catch
(Exception ex)
{
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ex.printStackTrace();
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}
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}
catch
(Exception ex)
{
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ex.printStackTrace();
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}
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return
returnValue;
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}
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/** */
/**
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* 格式化XML文档,并解决中文问题
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*
@param
filename
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*
@return
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*/
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public
int
formatXMLFile(String filename)
{
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int
returnValue
=
0
;
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try
{
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SAXReader saxReader
=
new
SAXReader();
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Document document
=
saxReader.read(
new
File(filename));
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XMLWriter writer
=
null
;
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/** */
/**
格式化输出,类型IE浏览一样
*/
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OutputFormat format
=
OutputFormat.createPrettyPrint();
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/** */
/**
指定XML编码
*/
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format.setEncoding(
"
GBK
"
);
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writer
=
new
XMLWriter(
new
FileWriter(
new
File(filename)), format);
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writer.write(document);
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writer.close();
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/** */
/**
执行成功,需返回1
*/
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returnValue
=
1
;
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}
catch
(Exception ex)
{
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ex.printStackTrace();
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}
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return
returnValue;
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}
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}
posted on 2006-09-20 15:46
Warren.Wu 阅读(142)
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