为多平台 SWT 应用程序为每个平台构建一个 jar [英] Build one jar per platform for multi-platform SWT application
问题描述
关于这个主题已经有几个问题，但似乎没有一个能正常工作.
There are a couple of questions to this topic already, but none of them seem to work properly.
以下是它们的列表:
- 使用 Ant 构建多平台 SWT 应用程序
- 为 SWT 应用程序构建多平台可执行文件 (Eclipse)
- 为 SWT 应用程序构建多平台可执行文件使用Maven
- 不同平台的SWT jar
- 创建跨平台 Java SWT 应用程序
我的要求是构建一个 ant 脚本，该脚本创建每个平台一个 jar，即一个用于 Windows x86，一个用于 Windows x64、Linux x86/x64 等.
My requirement is to build an ant script that creates one jar per platform, i.e. one for Windows x86, one for Windows x64, Linux x86/x64 and so on.
有人有更深入的了解吗?
Does anyone have any further insight?
使用上述方法，我无法产生可行的解决方案.它要么以未自动加载 SWT jar 文件或未包含在类路径中而结束.
Using the aforementioned methods, I was not able to produce a workable solution. It either ended with the SWT jar file not automatically being loaded or it not being included in the classpath.
如果有人能提出一个可行的例子(最好包括完整的源代码)，那就太好了！
If someone can come up with a working example (ideally including the complete source code), that would be grand!
推荐答案
对，所以我终于想出了一个在三个平台上都成功测试过的解决方案.
Right, so I finally came up with a solution that I successfully tested on three platforms.
两个神奇的组件是 jar-in-jar-loader 和一个合适的构建脚本.
The two magic components are the jar-in-jar-loader and a proper build script.
可以在此处找到带有注释的构建脚本:
The build script with comments can be found here:
<project name="RandomApp" basedir="." default="clean-build">
<property name="src.dir" value="src" />
<!-- Define the necessary paths -->
<property name="build.dir" value="bin_temp" />
<property name="lib.dir" value="lib" />
<property name="lib.deploy.dir" value="lib_swt" />
<property name="classes.dir" value="${build.dir}/classes" />
<property name="jar.dir" value="${build.dir}/jar" />
<property name="img.dir" value="img" />
<property name="res.dir" value="res" />
<!-- Define the main class -->
<property name="main-class" value="org.baz.desktop.randomapp.gui.RandomApp" />
<path id="base-classpath">
<fileset dir="${lib.dir}" includes="**/*.jar" />
</path>
<!-- Define the class path -->
<path id="classpath">
<fileset dir="${lib.dir}" includes="**/*.jar" />
<fileset dir="${lib.deploy.dir}" includes="**/swt_win32_x64.jar" />
</path>
<!-- Clean previously built files -->
<target name="clean">
<delete dir="${build.dir}" />
</target>
<!-- Compile the project -->
<target name="compile">
<mkdir dir="${classes.dir}" />
<javac srcdir="${src.dir}" destdir="${classes.dir}" classpathref="classpath" includeantruntime="false" />
</target>
<macrodef name="createclasspath">
<attribute name="name" />
<attribute name="swtlib" />
<sequential>
<pathconvert property="@{name}.classpath" pathsep=" ">
<path refid="base-classpath" />
<fileset dir="${lib.deploy.dir}" includes="**/swt_@{swtlib}.jar" />
<mapper>
<chainedmapper>
<flattenmapper />
<globmapper from="*.jar" to="*.jar" />
</chainedmapper>
</mapper>
</pathconvert>
</sequential>
</macrodef>
<!-- Define classpath and create the jar folder -->
<target name="pre_jar" depends="compile">
<!-- Linux 32bit -->
<createclasspath name="win86" swtlib="win32_x86" />
<!-- Linux 64bit -->
<createclasspath name="win64" swtlib="win32_x64" />
<!-- Windows 32bit -->
<createclasspath name="linux86" swtlib="linux_gtk_x86" />
<!-- Windows 64bit -->
<createclasspath name="linux64" swtlib="linux_gtk_x64" />
<!-- MacOS 32bit -->
<createclasspath name="macos86" swtlib="macos_x86" />
<!-- MacOS 64bit -->
<createclasspath name="macos64" swtlib="macos_x64" />
<mkdir dir="${jar.dir}" />
</target>
<macrodef name="createjar">
<attribute name="swtlib" />
<attribute name="swtclasspath" />
<sequential>
<jar destfile="${jar.dir}/${ant.project.name}_@{swtlib}.jar" basedir="${classes.dir}">
<manifest>
<attribute name="Main-Class" value="org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader" />
<attribute name="Rsrc-Main-Class" value="${main-class}" />
<attribute name="Class-Path" value="." />
<attribute name="Rsrc-Class-Path" value="./ @{swtclasspath}" />
</manifest>
<zipgroupfileset dir="${lib.dir}" includes="**/jar-in-jar-loader.jar" />
<zipfileset dir="${lib.deploy.dir}" includes="**/swt_@{swtlib}.jar" />
<zipfileset dir="${lib.dir}" includes="**/*.jar" excludes="**/jar-in-jar-loader.jar" />
</jar>
</sequential>
</macrodef>
<!-- Create the jar files -->
<target name="jar" depends="pre_jar">
<!-- Linux 32bit -->
<createjar swtlib="linux_gtk_x86" swtclasspath="${linux86.classpath}" />
<!-- Linux 64bit -->
<createjar swtlib="linux_gtk_x64" swtclasspath="${linux64.classpath}" />
<!-- Windows 32bit -->
<createjar swtlib="win32_x86" swtclasspath="${win86.classpath}" />
<!-- Windows 64bit -->
<createjar swtlib="win32_x64" swtclasspath="${win64.classpath}" />
<!-- MacOS 32bit -->
<createjar swtlib="macos_x86" swtclasspath="${macos86.classpath}" />
<!-- MacOS 64bit -->
<createjar swtlib="macos_x64" swtclasspath="${macos64.classpath}" />
</target>
<target name="clean-build" depends="clean,jar" />
</project>
它的主要作用是定义一个基类路径没有任何 SWT 库.然后它使用基础类路径创建平台特定的类路径并添加适当的平台 SWT 库.
What it basically does is define a base classpath without any SWT library. Then it creates platform specific classpaths using the base one and adding the appropriate platform SWT library.
jar 任务然后使用这些类路径和 jar-in-jar-loader 为每个平台创建一个单独的 jar.
The jar task then creates a separate jar for each platform using these classpaths and the jar-in-jar-loader.
就是这样，一种为每个(支持的)平台生成 jar 的全自动方式.
And that's it, a fully automated way of generating jars for each (supported) platform.
我创建了一个示例项目，人们可以下载和测试.这是多平台应用程序的简单起点.
I've created an example project that people can download and test out. It's an easy starting point for a multi-platform application.
https://www.dropbox.com/s/ianrbl4bn0fmsdi/SWTApplication.7z
更新:
通过正确使用 macrodef，我已经成功地显着缩短了 ant 脚本 :)
I've managed to significantly shorten the ant script by making proper use of macrodef :)
这篇关于为多平台 SWT 应用程序为每个平台构建一个 jar的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
