Ant构建文件问题

Question

您好我有蚂蚁的build.xml问题，它的工作原理，但有时也不是第一次或在某些计算机等人的作品不

所以在这里，它是：

<project name="My-java-api" default="dist-api" basedir="."> 

<description> 
    Java API Buildfile 
</description> 

<property name="src" location="src"/> 
<property name="build" location="build"/> 
<property name="dist" location="dist"/> 
<property name="libs" location="libs"/> 

<!--if we don't remove folders, when we call compile-api 
and classes have already been built, it doesn't build again--> 

<target name="-init-api" depends="clean" 
     description="Create folders libs and build"> 
    <mkdir dir="${build}"/> 
    <mkdir dir="${libs}"/> 
    <mkdir dir="${dist}"/> 
</target> 

<!-- Here I call another buildfile of submodule located at the tree indicated I am 
sure the other buildfile works perfect --> 

<target name="-pre-build-api" depends="-init-api" 
     description="Create jelly jar and copy it to libs folder"> 
    <ant dir="../Libraries/jelly/core/" 
     antfile="build.xml" 
     target="standalone-jar"/> 
    <copy todir="${libs}"> 
     <fileset 
       dir="../Libraries/jelly/core/dist" 
       includes="jelly-standalone*.jar" /> 
    </copy> 
</target> 

<!--so now I create this classpath to use for making jar--> 

<path id="lib.classpath"> 
    <fileset dir="${libs}" includes="**/*.jar"/> 
</path> 

<!--I compile source code including the jar that I have just copied to libs--> 
<target name="compile-api" depends="-pre-build-api" > 
    <javac srcdir="${src}" 
      includeantruntime="false" 
      destdir="${build}" 
      classpathref="lib.classpath"> 
    </javac> 
</target> 
<!-- here i make jar with the classes and using the jar from external project, 
I want just one jar for everything --> 

<target name="dist-api" depends="compile-api" > 

    <jar jarfile="${dist}/name-java-api-0.1.jar" basedir="${build}" > 
     <zipgroupfileset dir="${libs}" includes="**/*.jar" /> 
    </jar> 
</target> 

<target name="clean" 
     description="clean up" > 
    <delete dir="${build}"/> 
    <delete dir="${dist}"/> 
    <delete dir="${libs}"/> 
</target> 

编辑：failonerror =“假”添加到全部删除线

我不习惯蚂蚁和我一直在努力，努力，它只是完全不是那么回事。我希望我可以使用命令行，但不能。 奇怪的是，大多数情况下，如果运行它2次，它会工作，但第一次真奇怪的工作人员发生：要么不编译，要么重复类。可能是什么原因？非常感谢

Answer 1

你能解释它为什么会失败吗？快速浏览一下，我发现你的compile-api任务取决于你的lib.classpath任务，但它不包含在的编译API的依赖中。这可能会导致构建脚本有时而不是其他人。

此外，lib.classpath取决于正在创建的LIB目录，所以它也应当取决于-init-API。

而且，你应该永远有什么取决于干净。 Ant构建是安装的，所以他们不必执行不必要的步骤。例如，如果只更改一个源文件，则只有该源文件被重新编译。你打破了构建脚本的每一次构建完成都强制清理的整个想法。

---

在你的build.xml看起来更近一点，我意识到还有一些其他问题。

这里是一个build.xml与纠正的依赖关系。

<project name="My-java-api" default="dist-api" basedir="."> 

    <description> 
     Java API Buildfile 
    </description> 

    <property name="src" location="src"/> 
    <property name="build" location="build"/> 
    <property name="dist" location="dist"/> 
    <property name="libs" location="libs"/> 

    <!--if we don't remove folders, when we call compile-api --> 
    <!-- and classes have already been built, it doesn't build again--> 

    <target name="-init-api" 
     description="Create folders libs and build"> 
     <mkdir dir="${build}"/> 
     <mkdir dir="${libs}"/> 
     <mkdir dir="${dist}"/> 
    </target> 

    <!-- Here I call another buildfile of submodule located at the tree indicated I am --> 
    <!--sure the other buildfile works perfect --> 

    <target name="-pre-build-api" depends="-init-api" 
     description="Create jelly jar and copy it to libs folder"> 
     <ant dir="../Libraries/jelly/core/" 
      antfile="build.xml" 
      target="standalone-jar"/> 
     <copy todir="${libs}"> 
      <fileset 
       dir="../Libraries/jelly/core/dist" 
       includes="jelly-standalone*.jar" /> 
     </copy> 
    </target> 

    <!--so now I create this classpath to use for making jar--> 

    <target name="lib.classpath" 
     depends="-pre-build-api"> 
     <path id="lib.classpath" 
      depends="-pre-build-api"> 
      <fileset dir="${libs}" includes="**/*.jar"/> 
     </path> 
    </target> 

    <!--I compile source code including the jar that I have just copied to libs--> 
    <target name="compile-api" 
     depends="lib.classpath" > 
     <javac srcdir="${src}" 
      includeantruntime="false" 
      destdir="${build}" 
      classpathref="lib.classpath"> 
     </javac> 
    </target> 
    <!-- here i make jar with the classes and using the jar from external project, 
    I want just one jar for everything --> 

    <target name="dist-api" 
     depends="compile-api" > 

     <jar jarfile="${dist}/name-java-api-0.1.jar" basedir="${build}" > 
      <zipgroupfileset dir="${libs}" includes="**/*.jar" /> 
     </jar> 
    </target> 

    <target name="clean" 
     description="clean up" > 
     <delete dir="${build}"/> 
     <delete dir="${dist}"/> 
     <delete dir="${libs}"/> 
    </target> 
</project> 

注意：dist-api取决于compile-api这取决于lib.classpath这取决于pre-build-api这_DEPENDS在-init.api。没有任何东西依赖于clean。

Answer 2

我认为如果目录不存在，它会发出抱怨，第一次运行时就会出现这种情况。您可能需要为删除任务添加failonerror =“false”属性。

为了将来的参考，蚂蚁并没有真正用于构建Java - 大多数人已经转向了maven。