当你解析XML时,是否会因为命名空间的存在而不能得偿所愿呢?
.net上的解决方法我就不多说了(.net有世界上最详细的开发文档。这是我最欣赏微软的地方)
java方面,好多人推荐用dom4j处理xml,我也就说说在dom4j上处理带命名空间的xml
先说前两个方法,是从网上看来的。(来自http://blog.csdn.net/anyoneking/)摘抄如下:
xml代码example:
<</SPAN>reportxmlns ="http://www.eclipse.org/birt/2005/design"version ="3.2.15"id ="1">
<</SPAN>list-propertyname ="cssStyleSheets">
<</SPAN>structure>
<</SPAN>propertyname ="fileName">D:eport.css </</SPAN>property>
</</SPAN>structure>
</</SPAN>list-property>
</</SPAN>report>
</</SPAN>report>
第一个方案.设置你的xpath的命名空间setNamespaceURIs
public
class
TransferXML{
public
static
void
main(String[]args)throwsException{
Mapmap
=
new
HashMap();
map.put(
"
design
"
,
"
http://www.eclipse.org/birt/2005/design
"
);
SAXReadersaxReader
=
new
SAXReader();
Filefile
=
new
File(
"
D:\test.xml
"
);
Documentdocument
=
saxReader.read(file);
XPathx
=
document.createXPath(
"
//design:list-property
"
);
x.setNamespaceURIs(map);
Listnodelist
=
x.selectNodes(document);
System.
out
.println(nodelist.size());
}
}
}
第二个解决方案:设置你的DocumentFactory()的命名空间 setXPathNamespaceURIs
public
class
TransferXML{
public
static
void
main(String[]args)throwsException{
Mapmap
=
new
HashMap();
map.put(
"
design
"
,
"
http://www.eclipse.org/birt/2005/design
"
);
SAXReadersaxReader
=
new
SAXReader();
Filefile
=
new
File(
"
D:\test.xml
"
);
saxReader.getDocumentFactory().setXPathNamespaceURIs(map);
Documentdocument
=
saxReader.read(file);
Listtmp
=
document.selectNodes(
"
//design:list-property
"
);
System.
out
.println(tmp.size());
}
}
}
第三种方法:本人用的,最笨也是最通用的方法,就是不使用开发环境给你提供的一系列对象,而是用XPath语法中自带的local-name()
当你遇到使用xslt来样式化xml时,就知道这个笨方法的好处了:
public
class
TransferXML{
public
static
void
main(String[]args)throwsException
SAXReadersaxReader
=
new
SAXReader();
Filefile
=
new
File(
"
D:\test.xml
"
);
Documentdocument
=
saxReader.read(file);
Listtmp
=
document.selectNodes(
"
//*[local-name()='report'andnamespace-uri()='http://www.eclipse.org/birt/2005/design']/*[local-name()='list-property']
"
);
System.
out
.println(tmp.size()); } }