Shell执行/调用Java/Jar程序例子

     本人新浪微博:http://weibo.com/guoyunsky

      最近要写一个独立的Java程序去监控Hadoop和Oozie,通过Shell去调用.写代码到现在也4年多了,貌似就从来没在生产环境中写过一个独立的Java程序,不是部署到Tomcat就是直接丢给Hadoop.于是参考Hadoop等开源环境,自己写了一个demo,并且可以通过Ant打包生成可运行的程序.所以这里有三步:Java程序,Shell,Ant

     1.首先建立Java程序,由于是例子,所以这里很简单,只是输出传入参数的个数,代码如下:

package com.guoyun.study.shell;

public class ShellJavaAnt {

    /**
     * @param args
     */
    public static void main(String[] args) {
        System.out.println("arguments length:"+args.length);
    }

}

 

    2.Shell脚本

#!/bin/bash
#
PRG="${0}"
while [ -h "${PRG}" ]; do
  ls=`ls -ld "${PRG}"`
  link=`expr "$ls" : '.*-> \(.*\)$'`
  if expr "$link" : '/.*' > /dev/null; then
    PRG="$link"
  else
    PRG=`dirname "${PRG}"`/"$link"
  fi
done

BASEDIR=`dirname ${PRG}`
BASEDIR=`cd ${BASEDIR}/..;pwd`


if test -z ${JAVA_HOME}
then
    JAVA_BIN=java
else
    JAVA_BIN=${JAVA_HOME}/bin/java
fi

CLASS_PATH=$BASEDIR/shell-run-java-by-ant-*.jar
SERVICE_CLASS="com.guoyun.study.shell.ShellJavaAnt"

${JAVA_BIN} -cp $CLASS_PATH ${SERVICE_CLASS} "${@}"

exit 0

 

   3.ANT

<project name="shell-run-java-by-ant" default="release-jar" basedir=".">

  <property file="build.properties" />
    
  <property name="jar.name" value="shell-run-java-by-ant" />
  <property name="version" value="0.1" />
  <property name="package.name"  value="${jar.name}-${version}" />

  <property name="build.dir" location="build" />
  <property name="build.cache.dir" location="${build.dir}/cache" />
  <property name="build.lib.dir" location="${build.dir}/lib" />
  <property name="javadoc.dir" location="javadoc" />
  <property name="dist.dir"  location="dist" />
  <property name="dist.java.dir"  location="${dist.jar}/java" />
  <property name="package.dir"  location="${dist.dir}/${package.name}" />
  <property name="tar.file" location="${dist.dir}/${jar.name}-${version}.tar.gz" />


  <property name="src.dir" location="src" />
  <property name="java.src.dir" location="${src.dir}/java" />
  <property name="test.src.dir" location="${src.dir}/test" />  
  <property name="classes.dir" location="${build.dir}/classes" />
  <property name="lib.dir" value="${basedir}/lib"/>
  <property name="script.dir" value="${basedir}/script"/>


  <target name="release" description="sets properties for release builds.">
		<echo message="Building in release mode..."/>
		<property name="compile.mode" value="release"/>
		<property name="java.debug" value="false"/>
  </target>

  <target name="init">
    <tstamp/>
    <mkdir dir="${build.dir}" />
    <mkdir dir="${classes.dir}" />
  </target>

  <macrodef name="compile-source">
   <sequential>
    <javac srcdir="${java.src.dir}" destdir="${classes.dir}" debug="${java.debug}" debuglevel="lines,vars,source">
      <classpath>
        <fileset dir="lib">
          <include name="**/*.jar"/>
        </fileset>
      </classpath>
    </javac>
   </sequential>
  </macrodef>

  <target name="compile" depends="init" description="compile the source">
    <compile-source />
  </target>

  
  <target name="jar" depends="compile">
    <delete file="${build.dir}/${jar.name}-${version}.jar"/>
    <jar jarfile="${build.dir}/${jar.name}-${version}.jar">
      <fileset dir="${classes.dir}"/>
    </jar>
  </target>
	
  <target name="package" depends="clean, jar">
    <mkdir dir="${package.dir}"/>
    <mkdir dir="${package.dir}/lib"/>
  	<mkdir dir="${package.dir}/bin" />

    <copy todir="${package.dir}/lib" includeEmptyDirs="false">
      <fileset dir="${lib.dir}">
        <include name="**/*" />
      </fileset>
    </copy>
    <copy todir="${package.dir}">
      <fileset file="${build.dir}/${jar.name}-${version}.jar"/>
    </copy>
    <copy todir="${package.dir}/" file="build.xml"/>
  	<copy todir="${package.dir}/bin" includeEmptyDirs="false">
  	  		<fileset dir="${basedir}/script/shell">
  	  			<include name="**/*" />
  	  		</fileset>
  	</copy>
  	
  	<chmod file="${package.dir}/bin/*" perm="ugo+rx"/>
  </target>

  <target name="tar" depends="package" description="Create release tarball">
    <tar compression="gzip" longfile="gnu" destfile="${tar.file}">
      <tarfileset dir="${package.dir}" mode="777" prefix="${package.name}">
        <exclude name="bin/*" />
        <exclude name="**/*.sh" />
        <include name="**" />
      </tarfileset>
      <tarfileset dir="${package.dir}" mode="777" prefix="${package.name}">
        <include name="**/*.sh" />
      </tarfileset>
    </tar>
    <delete dir="${package.dir}" />
  </target>
  
  <target name="javadoc" depends="compile" description="generate documentation" >
    <delete dir="${javadoc.dir}" />
    <javadoc destdir="${javadoc.dir}">
      <fileset dir="${java.src.dir}" />
      <classpath>
        <fileset dir="${lib.dir}">
          <include name="**/*.jar"/>
        </fileset>
      </classpath>
    </javadoc>
  </target>

  <target name="release-jar" description="Build release and jar" depends="release,jar"/>

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

</project>

 

   由于比较简单,这里就不多做注释,完整例子,请见附件.使用的话,只要进入你的工程,运行ant package,便会将程序打包到$YOUR_PROJECT/dist目录下.之后进入该程序运行bin/shell-java-ant  a b c d e f g,就会得到arguments length:7

这样子的输出.

 更多技术文章、感悟、分享、勾搭，请用微信扫描: