我可以使用属性在ivy.xml文件，以避免重蹈依赖的版本号？ [英] Can I use properties in an ivy.xml file to avoid repeating version numbers of dependencies?

问题描述

下面就是我的ivy.xml的一部分看起来像现在：

Here's what part of my ivy.xml looks like right now:

<dependency org="org.springframework" name="org.springframework.core" rev="3.0.2.RELEASE" />
<dependency org="org.springframework" name="org.springframework.context" rev="3.0.2.RELEASE" />
<dependency org="org.springframework" name="org.springframework.jdbc" rev="3.0.2.RELEASE" />
<dependency org="org.springframework" name="org.springframework.beans" rev="3.0.2.RELEASE" />
<dependency org="org.springframework" name="org.springframework.jms" rev="3.0.2.RELEASE" />

下面是我想它看起来像：

Here's what I'd like it to look like:

<dependency org="org.springframework" name="org.springframework.core" rev="${spring.version}" />
<dependency org="org.springframework" name="org.springframework.context" rev="${spring.version}" />
<dependency org="org.springframework" name="org.springframework.jdbc" rev="${spring.version}" />
<dependency org="org.springframework" name="org.springframework.beans" rev="${spring.version}" />
<dependency org="org.springframework" name="org.springframework.jms" rev="${spring.version}" />

这可能吗？什么是语法？

Is this possible? What's the syntax?

推荐答案

我结束了使用XML实体做替换。这使得在同一文件中，这是我的使用情况下，重要的一切。

I ended up using XML entities to do the substitution. This keeps everything in the same file, which is important for my use case.

<?xml version="1.0"?>
<!DOCTYPE ivy-module [
    <!ENTITY spring.version "3.0.2.RELEASE">
]>
<ivy-module version="2.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:noNamespaceSchemaLocation="http://incubator.apache.org/ivy/schemas/ivy.xsd">

    <info organisation="org" module="mod"/>

    <dependencies>
        <dependency org="org.springframework" name="org.springframework.core" rev="&spring.version;" />
        <dependency org="org.springframework" name="org.springframework.context" rev="&spring.version;" />
        <dependency org="org.springframework" name="org.springframework.jdbc" rev="&spring.version;" />
        <dependency org="org.springframework" name="org.springframework.beans" rev="&spring.version;" />
        <dependency org="org.springframework" name="org.springframework.jms" rev="&spring.version;" />
    </dependencies>
</ivy-module>

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