将 Xalan 与 Saxon 一起使用 [英] Using Xalan alongside Saxon

问题描述

我在我的应用程序中使用 Xalan，但需要使用 Saxon 和参考实现来生成测试输出以进行比较.我想在单元测试期间同时使用它们.但是，一旦我在项目 .pom 中添加了对 Saxon 的依赖项，该应用程序似乎在测试期间将 Saxon 用于所有 xslt 和 XPath 操作:

I use Xalan in my application, but need to use Saxon with a reference implementation to generate test output to compare with. I want to use them both during unit tests. However, as soon as I add an dependency on Saxon in the project .pom, the application seems to use Saxon for all xslt and XPath operations during tests:

<dependency>
  <groupId>net.sf.saxon</groupId>
  <artifactId>Saxon-HE</artifactId>
  <version>9.4</version>
  <scope>test</scope>
</dependency>

这会使主应用程序在生成输出时由于不同的 XPath 行为而失败.在测试范围之外运行主应用程序时，它可以工作.

This makes the main application fail when generating output due to a different XPath behaviour. When running the main application outside of test scope it works.

如何在测试期间使用 Xalan 运行主应用程序，但使用 Saxon 运行测试?

How can I run the main application using Xalan, but the tests using Saxon, during tests?

在运行 Xalan 和 Saxon 部分之前，我尝试设置以下属性:

I have tried setting the following property before running the Xalan and Saxon parts:

System.setProperty("javax.xml.transform.TransformerFactory", "org.apache.xalan.processor.TransformerFactoryImpl ");
System.setProperty("javax.xml.transform.TransformerFactory", "net.sf.saxon.TransformerFactoryImpl");

我还尝试将 Xalan 和 Saxon 部分放在不同的项目中，我也尝试在第三个项目中使用它们，结果相同.

I have also tried to put the Xalan and Saxon parts in different projects, and I have also tried to use them both from a third project, with the same result.

推荐答案

避免依赖 JAXP 工厂机制来选择您的转换引擎.而是明确加载您想要的引擎:它更可靠，速度也更快.对于撒克逊人，替换调用

Avoid relying on the JAXP factory mechanism for selecting your transformation engine. Instead load the engine you want explicitly: it's much more reliable and much faster. For Saxon, replace the call on

TransformerFactory.newInstance()

与

new net.sf.saxon.TransformerFactoryImpl()

和 Xalan 使用

new org.apache.xalan.processor.TransformerFactoryImpl()

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