通过ant传递参数

通过ant命令行传递参数的两种： 1、通过 System中的Property传递  2、通过main方法中的args参数传递

 

直接代码：

ShowProps：

package com.matt;

public class ShowProps {
    public static void main(String[] args) {
        System.out.println("Now in ShowProps class...");
        System.out.println("prop1     = " + System.getProperty("prop1"));
        System.out.println("prop2     = " + System.getProperty("prop2"));
        System.out.println("prop3     = " + System.getProperty("prop3"));
        System.out.println("args     = " + args[0]);
        System.out.println("user.home = " + System.getProperty("user.home"));
    }
}

 

build.xml:

<?xml version="1.0"?>
<project name="sysprops" default="run" basedir=".">
  <property name="prop1" value="Property 1 from Buildfile"/>
  <property name="prop2" value="Property 2 from Buildfile"/>
  <property name="args" value="args"/>

  <target name="clean">
    <delete dir="com"/>
  </target>

  <target name="compile">
    <javac srcdir="." destdir=".">
      <classpath path="."/>
    </javac>
  </target>

  <target name="run" depends="compile">
  <echo message="Now in buildfile..."/>
    <echo message="prop1     = ${prop1}"/>
    <echo message="prop2     = ${prop2}"/>
    <echo message="user.home = ${user.home}"/> 

    <!-- execute the main() method in a Java class -->
    <java classname="com.matt.ShowProps">
      <classpath path="."/>
      <!-- pass one of the properties -->
      <sysproperty key="prop1" value="${prop1}"/>
      <sysproperty key="prop3" value="${prop2}"/>
      <arg value="${args}"/>
    </java>
  </target>

</project>

 

直接运行ant命令，结果：

     [java] Now in ShowProps class...
     [java] prop1     = Property 1 from Buildfile
     [java] prop2     = null
     [java] prop3     = Property 2 from Buildfile
     [java] args     = args
     [java] user.home = C:\Users\matt

 

运行命令： ant  -Dprop1="prop1",-Dprop2="prop2",-Dprop3="prop3",-Dargs="args1,args2,args3,args4"

结果：

  [java] Now in ShowProps class...
     [java] prop1     = prop1
     [java] prop2     = null
     [java] prop3     = prop2
     [java] args     = args1,args2,args3,args4
     [java] user.home = C:\Users\matt