同时建立可运行罐子蚂蚁卡住 [英] Ant gets stuck while building runnable jar

问题描述

这又是我。
我一直在试图创建Java项目导入使用Ant脚本运行的JAR。
这是我的build.xml

it's me again. I've been trying to create java project into a runnable jar using ant script. This is my build.xml

<project name="simple-app" basedir="." default="main">
    <property name="src.dir" value="src" />
    <property name="build.dir" value="build" />
    <property name="classes.dir" value="${build.dir}/classes" />
    <property name="jar.dir" value="${build.dir}/jar" />
    <property name="lib.dir" value="lib" />
    <property name="main-class" value="app.App" />

    <path id="classpath">
    <fileset dir="${lib.dir}">
        <include name="*.jar" />
    </fileset>
            <dirset dir="${build.dir}">
            <include name="classes"/>
    </dirset>
</path>

<target name="clean">
    <delete dir="${build.dir}" />
</target>

<target name="compile">
    <mkdir dir="${classes.dir}"/>
    <javac source="1.7" target="1.7" includeantruntime="false" srcdir="${src.dir}" destdir="${classes.dir}" classpathref="classpath" />
</target>

<target name="jar" depends="compile">
    <mkdir dir="${jar.dir}" />
    <jar destfile="${jar.dir}/${ant.project.name}.jar" basedir="${classes.dir}" includes="*.class">
        <manifest>
            <attribute name="Main-Class" value="${main-class}" />
        </manifest>
    </jar>
</target>


<target name="run" depends="jar">
    <java classname="${main-class}">
        <classpath>
            <path refid="classpath" />
            <path location="${jar.dir}/${ant.project.name}.jar" />
        </classpath>
    </java>
</target>

<target name="main" depends="clean,run"/>
</project>

一切顺利，但是当它到达跑，它卡住。终端运行说：并没有任何反应。等了30分钟，什么都没有。我想，我发现在互联网附近许多其他的选择，但这些要么导致在相同的滞后，或扔了ClassNotFoundException。

All goes well, but when it gets to "run" it gets stuck. Terminal says run: and nothing happens. Waited for 30 minutes, nothing. I tried many other options I found around the internet but those resulted either in the same lag, or threw ClassNotFoundException.

我严重不知道是什么，做的。当我做与Eclipse的文件，一切工作正常。任何人都可以帮我吗？这是propably一些完全愚蠢的，但我没有看到它。
非常感谢你。

I seriously don't know what, to do. When I make the file with Eclipse, all works fine. Anyone can help me? It's propably something totally stupid, but I just don't see it. Thank you very much.

推荐答案

要解决，你需要在JAR的清单类路径中的ClassNotFoundException例外。该 manifestclasspath 任务进来非常有用的：

To fix the ClassNotFoundException exception you need to include the classpath in the jar's manifest. The manifestclasspath task comes in very useful:

<target name="jar" depends="compile">
    <mkdir dir="${jar.dir}" />

    <manifestclasspath property="jar-classpath" jarfile="${jar.dir}/${ant.project.name}.jar">
      <classpath refid="classpath" />
    </manifestclasspath>

    <jar destfile="${jar.dir}/${ant.project.name}.jar" basedir="${classes.dir}" includes="*.class">
        <manifest>
            <attribute name="Main-Class" value="${main-class}" />
            <attribute name="Class-Path" value="${jar-classpath}" />
        </manifest>
    </jar>
</target>

这使您可以调用的jar如下：

This enables you to invoke the jar as follows:

<java jar="${jar.dir}/${ant.project.name}.jar" fork="true"/>

或命令行：

java -jar /path/to/myproject.jar

在最后，这可能无法解释为什么您的构建是挂....是否有可能在code为进入等待状态？

In the end this may not explain why your build is hanging.... Is it possible the code is going into a waiting state?

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