Làm thế nào để tạo build.xml cho một dự án java mới?

Question

Tôi đang tìm hiểu về tệp build.xml để xây dựng kiến. Tôi có một dự án "Hello World" đơn giản trong Eclipse.

Có cách nào để tạo tệp build.xml trong Eclipse cho dự án này không?

Cảm ơn trước.

Answer 1

Có - click vào File -> Export -> General -> Ant Buildfiles và chỉ định tên tập tin, dự án, vv

Answer 2

tôi thấy rằng tôi đã có một build.xml Ant chung duy nhất mà tôi tái sử dụng nhiều lần. Nó không phải cái gì đó phải được thực hiện từ đầu mỗi lần.

Nếu bạn đang học Ant, điểm của việc sử dụng tệp build.xml được tạo là gì?

Something như thế này:

<?xml version="1.0" encoding="UTF-8"?> 
<project name="xslt-converter" basedir="." default="package"> 

    <property name="version" value="1.6"/> 
    <property name="haltonfailure" value="no"/> 

    <property name="out" value="out"/> 

    <property name="production.src" value="src"/> 
    <property name="production.lib" value="lib"/> 
    <property name="production.resources" value="config"/> 
    <property name="production.classes" value="${out}/production/${ant.project.name}"/> 

    <property name="test.src" value="test"/> 
    <property name="test.lib" value="lib"/> 
    <property name="test.resources" value="config"/> 
    <property name="test.classes" value="${out}/test/${ant.project.name}"/> 

    <property name="exploded" value="out/exploded/${ant.project.name}"/> 
    <property name="exploded.classes" value="${exploded}/WEB-INF/classes"/> 
    <property name="exploded.lib" value="${exploded}/WEB-INF/lib"/> 

    <property name="reports.out" value="${out}/reports"/> 
    <property name="junit.out" value="${reports.out}/junit"/> 
    <property name="testng.out" value="${reports.out}/testng"/> 

    <path id="production.class.path"> 
     <pathelement location="${production.classes}"/> 
     <pathelement location="${production.resources}"/> 
     <fileset dir="${production.lib}"> 
      <include name="**/*.jar"/> 
      <exclude name="**/junit*.jar"/> 
      <exclude name="**/*test*.jar"/> 
     </fileset> 
    </path> 

    <path id="test.class.path">        
     <path refid="production.class.path"/> 
     <pathelement location="${test.classes}"/> 
     <pathelement location="${test.resources}"/> 
     <fileset dir="${test.lib}"> 
      <include name="**/junit*.jar"/> 
      <include name="**/*test*.jar"/> 
     </fileset> 
    </path> 

    <path id="testng.class.path"> 
     <fileset dir="${test.lib}"> 
      <include name="**/testng*.jar"/> 
     </fileset> 
    </path> 

    <available file="${out}" property="outputExists"/> 

    <target name="clean" description="remove all generated artifacts" if="outputExists"> 
     <delete dir="${out}" includeEmptyDirs="true"/> 
     <delete dir="${reports.out}" includeEmptyDirs="true"/> 
    </target> 

    <target name="create" description="create the output directories" unless="outputExists"> 
     <mkdir dir="${production.classes}"/> 
     <mkdir dir="${test.classes}"/> 
     <mkdir dir="${reports.out}"/> 
     <mkdir dir="${junit.out}"/> 
     <mkdir dir="${testng.out}"/> 
     <mkdir dir="${exploded.classes}"/> 
     <mkdir dir="${exploded.lib}"/> 
    </target> 

    <target name="compile" description="compile all .java source files" depends="create"> 
     <!-- Debug output 
       <property name="production.class.path" refid="production.class.path"/> 
       <echo message="${production.class.path}"/> 
     --> 
     <javac srcdir="src" destdir="${out}/production/${ant.project.name}" debug="on" source="${version}"> 
      <classpath refid="production.class.path"/> 
      <include name="**/*.java"/> 
      <exclude name="**/*Test.java"/> 
     </javac> 
     <javac srcdir="${test.src}" destdir="${out}/test/${ant.project.name}" debug="on" source="${version}"> 
      <classpath refid="test.class.path"/> 
      <include name="**/*Test.java"/> 
     </javac> 
    </target> 

    <target name="junit-test" description="run all junit tests" depends="compile"> 
     <!-- Debug output 
       <property name="test.class.path" refid="test.class.path"/> 
       <echo message="${test.class.path}"/> 
     --> 
     <junit printsummary="yes" haltonfailure="${haltonfailure}"> 
      <classpath refid="test.class.path"/> 
      <formatter type="xml"/> 
      <batchtest fork="yes" todir="${junit.out}"> 
       <fileset dir="${test.src}"> 
        <include name="**/*Test.java"/> 
       </fileset> 
      </batchtest> 
     </junit> 
     <junitreport todir="${junit.out}"> 
      <fileset dir="${junit.out}"> 
       <include name="TEST-*.xml"/> 
      </fileset> 
      <report todir="${junit.out}" format="frames"/> 
     </junitreport> 
    </target> 

    <taskdef resource="testngtasks" classpathref="testng.class.path"/> 
    <target name="testng-test" description="run all testng tests" depends="compile"> 
     <!-- Debug output 
       <property name="test.class.path" refid="test.class.path"/> 
       <echo message="${test.class.path}"/> 
     --> 
     <testng classpathref="test.class.path" outputDir="${testng.out}" haltOnFailure="${haltonfailure}" verbose="2" parallel="methods" threadcount="50"> 
      <classfileset dir="${out}/test/${ant.project.name}" includes="**/*.class"/> 
     </testng> 
    </target> 

    <target name="exploded" description="create exploded deployment" depends="testng-test"> 
     <copy todir="${exploded.classes}"> 
      <fileset dir="${production.classes}"/> 
     </copy> 
     <copy todir="${exploded.lib}"> 
      <fileset dir="${production.lib}"/> 
     </copy> 
    </target> 

    <target name="package" description="create package file" depends="exploded"> 
     <jar destfile="${out}/${ant.project.name}.jar" basedir="${production.classes}" includes="**/*.class"/> 
    </target> 

</project>