Compile Java Codes in Linux Shell instead of Ant Script
2024-09-07 23:24:15
The following is frequently used ant script, compile some java source codes with a libary path, then copy all non-java files to compiled folder:
<property name="src.dir" value="${basedir}/src" />
<property name="src.class.dir" value="${webroot.dir}/web-inf/classes" />
<path id="lib.path">
<fileset dir="${webroot.dir}/web-inf/lib">
<include name="**/*.jar" />
</fileset>
</path>
<target name="compile-src" depends="init" description="compile java sources">
<javac srcdir="${src.dir}" destdir="${src.class.dir}" encoding="utf-8"
debug="true" classpathref="lib.path" failonerror="false"/>
<copy todir="${src.class.dir}">
<fileset dir="${src.dir}">
<exclude name="**/*.java" />
</fileset>
</copy>
</target>
The corresponding shell script is:
src_dir=/vagrant/codes/GCP6.1/src
web_build=/vagrant/codes/web_build
class_dir=$web_build/web_server/webapps/GCP6.1/WEB-INF/classes
lib_dir=/vagrant/codes/GCP6.1/WebRoot/WEB-INF/lib
find $src_dir -type f -name "*.java" -exec javac -cp "$lib_dir/*:$src_dir" -d $class_dir {} \;
rsync -auC --exclude='*.java' $src_dir/ $class_dir/
Take care there's no folder named "core" in $src_dir, or it will be excluded by the "-C" option of rsync command.
A Test Case
$ tree
.
├── classes
├── lib
│ ├── libadd.jar
│ └── libmul.jar
├── libadd
│ └── com
│ └── boco
│ └── gcp
│ └── add
│ ├── MyAdd.class
│ └── MyAdd.java
├── libmul
│ └── com
│ └── boco
│ └── gcp
│ └── mul
│ ├── MyMul.class
│ └── MyMul.java
└── main
└── com
└── boco
└── gcp
├── Test.java
└── util
└── MyUtil.java
17 directories, 8 files
$ find . -name '*.java' -exec cat {} \; -exec echo "--------" \;
package com.boco.gcp.util;
import com.boco.gcp.add.MyAdd;
import com.boco.gcp.mul.MyMul;
public class MyUtil {
public int newadd(int x, int y) {
MyAdd add = new MyAdd();
MyMul mul = new MyMul();
return add.myadd(3,5) + mul.mymul(3,5);
}
}
--------
package com.boco.gcp;
import com.boco.gcp.mul.MyMul;
import com.boco.gcp.add.MyAdd;
import com.boco.gcp.util.MyUtil;
public class Test {
public static void main(String[] args) {
MyMul mul = new MyMul();
MyAdd add = new MyAdd();
System.out.println(mul.mymul(3,5));
System.out.println(add.myadd(3,5));
MyUtil util = new MyUtil();
System.out.println(util.newadd(3,5));
}
}
--------
package com.boco.gcp.mul;
public class MyMul {
public int mymul(int x, int y) {
return 10*x*y;
}
public static void main(String[] args) {
MyMul mul = new MyMul();
System.out.println(mul.mymul(3,5));
}
}
--------
package com.boco.gcp.add;
public class MyAdd {
public int myadd(int x, int y){
return 10*x+y;
}
public static void main(String[] args) {
MyAdd add = new MyAdd();
System.out.println(add.myadd(3,5));
}
}
--------
$ find main -name '*.java' -exec javac -cp 'lib/*:main' {} -d classes \;
$ tree classes/
classes/
└── com
└── boco
└── gcp
├── Test.class
└── util
└── MyUtil.class
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