Java：Ant打包jar文件（有lib目录）

Java：Ant打包jar文件（有lib目录）

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使用Ant打包Jar文件

主要是lib/*.jar的路径需要注意:  jar包里的jar包是不能被识别为classpath

使用方法：如果代码是如下面的目录结构组织的，不需要修改什么，直接在终端运行ant命令即可在out目录输出对应的jar文件。

<? xml version="1.0"  ?>
< project  default ="jar"  name ="Acid" >
     <!--  工程目录结构
    project
        |-bin
        |-src
        |-lib
        |-out
        |-build.xml
     -->
     < property  name ="lib.dir"  value ="lib" />
     < property  name ="src.dir"  value ="src" />
     < property  name ="classes.dir"  value ="bin" />

     < property  name ="output.dir"  value ="out" />
     < property  name ="jarname"  value ="Test.jar" />
     < property  name ="mainclass"  value ="com.biao.Test" />

     <!--  第三方jar包的路径  -->
     < path  id ="lib-classpath" >
         < fileset  dir ="${lib.dir}" >
             < include  name ="**/*.jar" />
         </ fileset >
     </ path >

     <!--  1. 初始化工作，如创建目录等  -->
     < target  name ="init" >
         < mkdir  dir ="${classes.dir}" />
         < mkdir  dir ="${output.dir}" />
     </ target >

     <!--  2. 编译  -->
     < target  name ="compile"  depends ="init" >
         < javac  srcdir ="${src.dir}"  destdir ="${classes.dir}" >
             < compilerarg  line ="-encoding UTF-8" />
             < classpath  refid ="lib-classpath" />
         </ javac >
     </ target >

     <!--  3. 打包jar文件  -->
     < target  name ="jar"  depends ="compile" >
         < copy  todir ="${output.dir}/lib" >
             < fileset  dir ="${lib.dir}" />
         </ copy >

         <!-- Create a property containing all .jar files,
        prefix lib/, and seperated with a space -->
         < pathconvert  property ="mf.classpath"  pathsep =" " >
             < mapper >
                 < chainedmapper >
                     <!--  jar包文件只留文件名，去掉目录信息  -->
                     < flattenmapper />
                     <!--  add lib/ prefix  -->
                     < globmapper  from ="*"  to ="lib/*" />
                 </ chainedmapper >
             </ mapper >
             < path  refid ="lib-classpath" />
          </ pathconvert >

         <!--  jar文件的输出路径  -->
         < jar  destfile ="${output.dir}/${jarname}"  basedir ="${classes.dir}" >
             < manifest >
                 < attribute  name ="Main-class"  value ="${mainclass}" />
                 < attribute  name ="Class-Path"  value ="${mf.classpath}" />
             </ manifest >
         </ jar >
     </ target >
</ project >