如何在Java中使用Saxon XPath处理器w / o编码 [英] How to use Saxon XPath processor w/o coding in Java

问题描述

我想我可以做一些XSL样式表，然后使用它作为参数选项的模板与评估XPath表达式与Saxon XSLT处理器在命令行，如：

I guess I could make some XSL stylesheet, then use it as a template with parameter option to evaluate XPath expression with Saxon XSLT processor on command line, like:

<xsl:template match="/">
  <xsl:copy-of select="saxon:evaluate($xpath-param)"/>
</xsl:template>

还有一种可能性是使用他们的Java API： http://www.saxonica.com/documentation/xpath-api/intro.xml 但我不知道Java

Also other possibility is to use their Java API: http://www.saxonica.com/documentation/xpath-api/intro.xml but I don't know Java

有没有办法让Saxon从命令行评估XPath表达式？

如果可能，shell脚本也是足够的

Is there any way to make Saxon evaluate XPath expression from command line?
Shell script would be sufficient, too, if possible

更新：

浏览Saxon 文档，我发现了 XPathExample 示例。不幸的是我不能使用它

Update:
Browsing Saxon documentation, I found out about XPathExample sample. Unfortunately I can't make use of it

推荐答案

您可以从命令行运行Saxon（XQuery）。您可以通过使用 -q 指向具有XPath / XQuery的文件来执行此操作，也可以直接使用 -qs 。

You can run Saxon (XQuery) from the command line. You can do this by pointing to a file that has the XPath/XQuery using -q or you can pass the query string directly using -qs.

下面是使用 -qs 来处理简单XPath的示例：

Here's an example of using -qs to process a simple XPath:

input.xml

<a>
  <b id="x"/>
  <b id="z"/>
  <b id="x"/>
</a>

Saxon命令行（我用Saxon9- HE测试） / p>

Saxon command line (I used Saxon9-HE to test with)

java -cp "saxon9he.jar" net.sf.saxon.Query -s:"input.xml" -qs:"/a/b[@id='x']" -o:"results.xml"

results.xml

results.xml

<b id="x"/><b id="x"/>

注意：我可以通过更改 -qs 为这样： -qs：< results> {/ a / b [@ id ='x']}< / results& 。

Note: I could've made my output well-formed by changing the -qs to something like this: -qs:"<results>{/a/b[@id='x']}</results>".

有关更多命令行选项，请查看： http://www.saxonica.com/html/documentation/using-xquery/commandline.html

For more command line options, look here: http://www.saxonica.com/html/documentation/using-xquery/commandline.html

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