语源科技BlogJava-liujiahttp://www.blogjava.net/liujia/zh-cnSat, 25 Apr 2026 04:04:10 GMTSat, 25 Apr 2026 04:04:10 GMT60XSLT1中处理含有默认名称空间声明的XML文档时的XPATH问题http://www.blogjava.net/liujia/archive/2006/07/04/56615.html刘佳刘佳Tue, 04 Jul 2006 15:43:00 GMThttp://www.blogjava.net/liujia/archive/2006/07/04/56615.htmlhttp://www.blogjava.net/liujia/comments/56615.htmlhttp://www.blogjava.net/liujia/archive/2006/07/04/56615.html#Feedback0http://www.blogjava.net/liujia/comments/commentRss/56615.htmlhttp://www.blogjava.net/liujia/services/trackbacks/56615.html
例如对于
<requestHierarchySelectResult xmlns=http://www.lightcc.com/ns xmlns:cs="http://www.customsolids.com">
    <request>
        <created_dt>05/05/2000 00:00:00</created_dt>
        <created_tm>01/01/1900 14:02:46</created_tm>
        <cs:request_id>100002</cs:request_id>
    </request>
</requestHierarchySelectResult>
应用
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0" 
   xmlns="http://www.lightcc.com/ns"
   xmlns:cs="http://www.customsolids.com">
   <xsl:template match="/">
      <root><xsl:apply-templates  select="/*/request"/></root>
   </xsl:template>
   <xsl:template  match="*|@*|node()"/>
   <xsl:template  match="request">
      <gotHere><xsl:value-of  select="."/></gotHere>
   </xsl:template>
</xsl:stylesheet>
是没有效果的.
需要给默认的名称空间指定一个前缀
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0" 
   xmlns:lc="http://www.lightcc.com/ns"
   xmlns:cs="http://www.customsolids.com">
   <xsl:template match="/">
       <root><xsl:apply-templates  select="/*/lc:request"/></root>
   </xsl:template>
   <xsl:template  match="*|@*|node()"/>
   <xsl:template  match="lc:request">
      <gotHere><xsl:value-of  select="."/></gotHere>
   </xsl:template>
</xsl:stylesheet>
据说XSLT2和XPATH2会解决这个问题

参考:
   http://www.edankert.com/defaultnamespaces.html
   http://www.topxml.com/people/bosley/defaultns.asp




刘佳 2006-07-04 23:43 发表评论
]]>XMLBeans和SAXON的配对问题http://www.blogjava.net/liujia/archive/2006/07/03/56418.html刘佳刘佳Mon, 03 Jul 2006 14:11:00 GMThttp://www.blogjava.net/liujia/archive/2006/07/03/56418.htmlhttp://www.blogjava.net/liujia/comments/56418.htmlhttp://www.blogjava.net/liujia/archive/2006/07/03/56418.html#Feedback0http://www.blogjava.net/liujia/comments/commentRss/56418.htmlhttp://www.blogjava.net/liujia/services/trackbacks/56418.html项目中用到XMLBeans做XML的数据绑定工作,但是发现生成的代码中的selectPath并不工作,调查后发现要使用SAXON,但是下载最新版后发现仍然不能正常工作.又经过调查得以解决.

XMLBeans2.2版是和saxon的8.6.1版一起工作的。最初的8.7和GOOGLE到的解决方案中为2.0版准备的8.1都不行
XMLBeans2.2:
http://mirror.vmmatrix.net/apache/xmlbeans/binaries/

saxon 8.6.1:
http://jaist.dl.sourceforge.net/sourceforge/saxon/saxonb8-6-1.zip

xpath查询至少需要 saxon8.jar saxon8-dom.jar saxon8-xpath.jar才能正常工作
缺少saxon8.jar会报如下错误

java.lang.RuntimeException:  Trying XBeans path engine... Trying XQRL... Trying Saxon... FAILED on $this/data[@name='data2']
 at org.apache.xmlbeans.impl.store.Path.getCompiledPath(Path.java:131)
 at org.apache.xmlbeans.impl.store.Path.getCompiledPath(Path.java:91)
 at org.apache.xmlbeans.impl.store.Cursor._selectPath(Cursor.java:902)
 at org.apache.xmlbeans.impl.store.Cursor.selectPath(Cursor.java:2634)
 at org.apache.xmlbeans.impl.values.XmlObjectBase.selectPath(XmlObjectBase.java:431)
 at org.apache.xmlbeans.impl.values.XmlObjectBase.selectPath(XmlObjectBase.java:415)
 at test.main(test.java:16)
Exception in thread "main"

只放saxon8.jar也是不正确的.缺少其他2个jar查询结果会不正确

简单测试:
SCHEMA:
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" attributeFormDefault="unqualified">
 <xs:element name="root" type="rootType">
  <xs:annotation>
   <xs:documentation>rootcomment</xs:documentation>
  </xs:annotation>
 </xs:element>
 <xs:complexType name="dataType">
  <xs:attribute name="name" use="required"/>
 </xs:complexType>
 <xs:complexType name="datasType">
  <xs:sequence>
   <xs:element name="data" minOccurs="0" maxOccurs="unbounded">
    <xs:complexType>
     <xs:simpleContent>
      <xs:extension base="xs:string">
       <xs:attribute name="name" use="required"/>
      </xs:extension>
     </xs:simpleContent>
    </xs:complexType>
   </xs:element>
  </xs:sequence>
 </xs:complexType>
 <xs:complexType name="rootType">
  <xs:sequence>
   <xs:element name="datas" type="datasType"/>
  </xs:sequence>
 </xs:complexType>
</xs:schema>

XML:
<?xml version="1.0" encoding="UTF-8"?>
<root xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="Z:\test.xsd">
 <datas>
  <data name="data1">value1</data>
  <data name="data2">value2</data>
  <data name="data3">value3</data>
 </datas>
</root>

jest.java

import java.io.File;

import noNamespace.DatasType;
import noNamespace.RootDocument;

import org.apache.xmlbeans.XmlObject;

public class test {
 final static String NS_DECLEAR = "";
 public static void main(String[] args) throws Exception {
  RootDocument doc = RootDocument.Factory.parse(new File("z:\\test.xml"));
  
  DatasType datas = doc.getRoot().getDatas();
  
  XmlObject[] objs = datas.selectPath("$this/data[@name='data2']");
  
  for (int i = 0; i < objs.length; i++) {
   System.out.println(objs[i]);
  }
 }
}

输出:

<xml-fragment name="data2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">value2</xml-fragment>

 



刘佳 2006-07-03 22:11 发表评论
]]>