配置Maven以将不同的JDK用于不同的J2SE版本? [英] Configure Maven to use different JDK for different J2SE versions?

问题描述

我想配置Maven2以使用sun-java6-jdk来构建Java SE 1.6模块，并使用openjdk-7来构建Java SE 1.7模块.有可能吗?

I want to configure Maven2 to use sun-java6-jdk to build Java SE 1.6 modules, and use openjdk-7 to build Java SE 1.7 modules. Is it possible?

然后，Maven2应该自动选择正确的JDK以在一个命令中构建不同的模块.

Maven2 should then auto choose the correct JDK to build different modules in one command.

例如，应该是

$ mvn package

代替

$ cd module1
$ update-alternatives ... jdk6 ...
$ mvn package
...
$ cd module2
$ update-alternatives ... jdk7 ...
$ mvn package

P.S.与pom.xml文件无关，这些文件已经使用不同模块的<source>和<target>值设置了maven-compiler-plugin.如果选择使用openjdk-7，则Maven2将生成版本1.6的类文件，但将使用openjdk-7而不是sun-java6-jdk.问题是关于如何配置Java SE配置文件.

P.S. It's nothing about pom.xml files, which have already been setup maven-compiler-plugin with different <source>, <target> values for different modules. If I choose to use openjdk-7, Maven2 will generate version 1.6 class files, but using openjdk-7 rather then sun-java6-jdk. The question is about how to configure Java SE profiles.

推荐答案

我们通过在编译插件的配置中明确分隔javac(将JAVA_HOME_6和JAVA_HOME_7定义为环境变量)来解决此问题:

we solved this problem by explicitely sepecify the javac in config of compile plugin (with JAVA_HOME_6 and JAVA_HOME_7 defined as environment variables):

以及Java 6模块

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-compiler-plugin</artifactId>
    <configuration>
        <source>1.6</source>
        <target>1.6</target>
        <showDeprecation>true</showDeprecation>
        <showWarnings>true</showWarnings>
        <executable>${env.JAVA_HOME_6}/bin/javac</executable>
        <fork>true</fork>
    </configuration>
</plugin>

以及Java 7模块

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-compiler-plugin</artifactId>
    <configuration>
        <source>1.7</source>
        <target>1.7</target>
        <showDeprecation>true</showDeprecation>
        <showWarnings>true</showWarnings>
        <executable>${env.JAVA_HOME_7}/bin/javac</executable>
        <fork>true</fork>
    </configuration>
</plugin>

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