使用耶拿从XMl文件创建RDF [英] Using jena for creating RDF from XMl file

问题描述

可能重复:
从XML创建RDF

Possible Duplicate:
create RDF from XML

对于第二次问这个问题，我感到抱歉，但是从下面的xml文件生成rdf时，我仍然遇到问题.

I am sorry for asking this question for the second time, I am still still having problem in generating rdf from the following xml file.

<xml>
<person>
<name>Joe</name>
<website url="www.example1.com">contact1</website >
<vote>20</vote>
</person>
<person>
 <name>Anna</name>
<website url="www.example2.com">contact2</website>
 <vote>80</vote>
 </person>
 </xml>

我认为使用jena可能可以解决此问题，但是我不确定该怎么做，因为每个都有3个属性，我希望结果如下所示

I think using jena might solve the issue , but I am not sure how to do so, since each has got three properties and I would like the out put to look like the following

<rdf:Description rdf:about="http://www.example.com/xml">
 <j.0:hasCritic>Joe</j.0:hasCritic>
 <rdf:Description rdf:about=Joe >
 <j.0:haswebsite>"www.example1.com"</j.0:haswebsite>
  <j.0:hascontact>contact1</j.0:hascontact>
  <j.0:hasvote>80</j.0:hasvote>
 </rdf:Description>
<j.0:hasCritic>Anna</j.0:hasCritic>
 <rdf:Description rdf:about=Anna>
 <j.0:haswebsite>"www.example2.com"</j.0:haswebsite>
  <j.0:hascontact>contact2</j.0:hascontact>
  <j.0:hasvote>20</j.0:hasvote>

在此先感谢您的帮助

推荐答案

除非是RDF/XML，否则无法使用Jena解析XML.

You can't parse the XML with Jena, unless it is RDF/XML.

您将必须使用XLST将XML转换为RDF或使用Java XML库解析XML以获取数据并根据感兴趣的数据创建三元组.

You'll have to use XLST to transform the XML to RDF or parse the XML with a Java XML library to get the data and create the triples from the data of interest.

使用XSLT非常简单，如下面的示例所示.

Using XSLT is fairly simple, as demonstrated from the example below.

因为网站是URL，所以我将其用作URI而不是文字.另外，FOAF是名称的通用名称.所以，我会使用类似的东西:

Since the website is URL I'd use it as a URI rather than a literal. Also, FOAF is common for names. So, I'd use something like:

<xsl:stylesheet version="1.0"
            xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
            xmlns:html="http://www.w3.org/1999/xhtml"
            xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
            xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
            xmlns:foaf="http://xmlns.com/foaf/spec/"
            xmlns:foo="http://example.com/foo#">

<xsl:template match="/">
    <rdf:RDF>
        <rdf:Description rdf:about="http://www.example.com/xml">
            <xsl:apply-templates/>
    </rdf:Description>
    </rdf:RDF>
</xsl:template>

<xsl:template match="person">
<xsl:variable name="critic"><xsl:value-of select="name"/></xsl:variable>
<xsl:variable name="criticWebsite"><xsl:value-of select="website/@url"/</xsl:variable>
<foo:hasCritic>
    <rdf:Description rdf:about="http://www.example.com/critic/{$critic}">
        <foaf:name><xsl:value-of select="name"/></foaf:name>
        <foaf:homepage>
            <rdf:Description rdf:about="http://{$criticWebsite}">
                <rdfs:label><xsl:value-of select="website"/></rdfs:label>
            </rdf:Description>
        </foaf:homepage>
    </rdf:Description>
</foo:hasCritic>
</xsl:template>

</xsl:stylesheet>

这将为您提供:

<?xml version="1.0"?>
<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:html="http://www.w3.org/1999/xhtml"
    xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
    xmlns:foaf="http://xmlns.com/foaf/spec/"
    xmlns:foo="http://example.com/foo#">

    <rdf:Description rdf:about="http://www.example.com/xml">
        <foo:hasCritic>
            <rdf:Description rdf:about="http://www.example.com/critic/Joe">
                <foaf:name>Joe</foaf:name>
                <foaf:homepage>
                    <rdf:Description rdf:about="http://www.example1.com">
                        <rdfs:label>contact1</rdfs:label>
                    </rdf:Description>
                </foaf:homepage>
            </rdf:Description>
        </foo:hasCritic>
        <foo:hasCritic>
        <rdf:Description rdf:about="http://www.example.com/critic/Anna">
            <foaf:name>Anna</foaf:name>
                <foaf:homepage>
                    <rdf:Description rdf:about="http://www.example2.com">
                        <rdfs:label>contact2</rdfs:label>
                    </rdf:Description>
                </foaf:homepage>
            </rdf:Description>
        </foo:hasCritic>
        </rdf:Description>
    </rdf:RDF>

然后您可以将RDF文件加载到Jena中

You can then load the RDF file into Jena

这篇关于使用耶拿从XMl文件创建RDF的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！