apache - 我可以使用ivy.xml文件中的属性来避免重复依赖性的版本号吗？

Question

这是我的ivy.xml现在的样子:

<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" />

这是我想要的样子:

<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？语法是什么？

Answer 1

我最终使用XML实体进行替换。这样可以将所有内容保存在同一文件中，这对我的用例很重要。

<?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>