My project is as given below.
properties
lib
a.jar
b.jar
c.jar
d.jar
log4j.jar
build.xml
I have a java task which references a jar in the lib folder. It writes the output as per the config in log4j properties.
Now where do i place the log4j.properties & mention it in ant java task.
This is how i run the java task & include jars for my project.
<path id="proj.classpath">
<fileset dir="${basedir}/lib">
<include name="*.jar"/>
</fileset>
</path>
<target name="some-task">
<java classname="my.class.main"
classpathref="proj.classpath">
<arg value="some args"/>
</java>
</target>
In your java class, include this in the main method. Pass the file path of the log4j.properties
PropertyConfigurator.configure(args[0]);
Something like this
<java classname="my.class.main"
classpathref="proj.classpath">
<arg value="log4j.properties path"/>
<arg value="some args"/>
</java>
Related
I would like Ant 1.9 to be able to compile servlet classes to the parent src directory, but the file system has the files in packages. No, the packages are not declared in the servlet files.
The code is deployed with all the servlets in the same directory. I supposed I can create an ant copy command to do this, but I would prefer there be an ant javac solution.
Manually this would be 'javac -d .. *.java' after changing to each subdirectory, not including the files already in the default package. This is highly irregular, but I cannot change the how the packages are defined nor can I change the urls from which the code is executed from.
<target name="compileServlet" description="Compiles Java source files.">
<javac srcdir="${servlets.dir}" destdir="$(servlets.dir}" debug="true" encoding="ISO-8859-1" source="1.7" target="1.7" failonerror="true">
<classpath path="${env.CLASSPATH}" />
<include name="**/*.java"/>
</javac>
</target>
Right now when I run this ant build.xml, no class files are generated. Any thoughts how I can solve this issue?
If you have source files in multiple root directories and want to compile them all into a single root directory, use the <src> element instead of the srcdir attribute.
Here is the example shown in the documentation:
<javac destdir="${build}"
classpath="xyz.jar"
debug="on">
<src path="${src}"/>
<src path="${src2}"/>
<include name="mypackage/p1/**"/>
<include name="mypackage/p2/**"/>
<exclude name="mypackage/p1/testpackage/**"/>
</javac>
I have my jar files in Assignment2\lib folder and my build file is in Assignment2. The name of the jar file is Assignment1.jar The following is how I tried to compile my Assignment2 from build file through ant.
<project name="Assignment1" default="run" basedir=".">
<property name="classes" value="classes" />
<path id="project.class.path">
<pathelement location="src"/>
<pathelement path="${java.class.path}/"/>
<pathelement path="${additional.path}"/>
</path>
<path id="lib.jars">
<fileset dir="lib" includes="**/*.jar" />
</path>
......
<target name="compile" description="compaling java files with Assignment2">
<mkdir dir="build"/>
<javac srcdir="src" destdir="build" debug="on" failonerror="true">
<classpath refid="project.class.path"/>
<classpath refid="lib.jars"/>
</javac>
</target>
<Project/>
I am getting compile errors. I'm using windows. Is that the problem? Is there any way to compile?
Well,Everything looks good to me but, you can try the following to validate the same,
Check if the lib folder has all the necessary library jars required to compile you application
You can try assigning the relative path of the lib folder to a property and refer it in the classpath eg: Property lib value=".\Lib"
Try the following before you call the compile target to see the list of jars being included in the classpath
<pathconvert property="libjars" refid="lib.jars"/>
<echo>libjars is ${classpathProp}</echo>
hey guys thanx for the answers actually i found probelm. i was trying to use a jar file created by netbeans files. Apparently netbeans jar files can be used only by netbeans. at the end i made a new jar file of Assingment1 and used it. now everything is fine. Thanx again for the answers.
Tagging- Selenium as well just in case someone faced similar issue while creating selenium tests using Ant.
I have seen lot of questions/answers on this topic, tried all the options suggested on various forums but still my issue is not getting resolved. Basically i compile code(includes the test scripts), create JAR and run the same JAR. For some reason it does not seem to identify the libraries during run time. Same code(With tests) works fine when main() method is run from Eclipse. Here is the build.xml,
<project default="run">
<target name="clean">
<delete dir="build" />
</target>
<target name="init-classpath">
<path id="lib.classpath">
<fileset dir="./lib/">
<include name="**.jar" />
</fileset>
</path>
<pathconvert property="mf.classpath" pathsep=" ">
<path refid="lib.classpath" />
<flattenmapper />
</pathconvert>
</target>
<target name="jar" depends="clean, init-classpath">
<javac classpathref="lib.classpath" destdir="./compiled" failonerror="true" srcdir="./src" />
<mkdir dir="build/jar" />
<jar destfile="build/jar/BANC.jar" basedir="compiled">
<manifest>
<attribute name="Main-Class" value="com.portico.driver.TestDriver" />
<attribute name="Class-Path" value="${mf.classpath}" />
</manifest>
</jar>
</target>
<target name="run" depends="jar">
<java jar="build/jar/BANC.jar" fork="true">
</java>
</target>
</project>
Error:-Exception in thread "main" java.lang.NoClassDefFoundError: jxl/Workbook
Manifest content
Manifest-Version: 1.0
Ant-Version: Apache Ant 1.8.3
Created-By: 1.6.0_41-b02 (Sun Microsystems Inc.)
Main-Class: com.portico.driver.TestDriver
Class-Path: activation.jar commons-lang-2.4.jar jna-3.4.0.jar jxl.jar
logging-selenium-1.2.jar mail.jar ojdbc14.jar poi-3.0.2-FINAL.jar rep
ortng-1.1.1.jar saxon-8.7.jar selenium-grid-demo-1.0.7.jar selenium-g
rid-demo-standalone-1.0.7.jar selenium-grid-hub-1.0.7.jar selenium-gr
id-hub-standalone-1.0.7.jar selenium-grid-remote-control-1.0.7.jar se
lenium-grid-remote-control-standalone-1.0.7.jar selenium-grid-tools-1
.0.7.jar selenium-grid-tools-standalone-1.0.7.jar selenium-server-1.0
.3-standalone.jar selenium-server-standalone-2.33.0.jar sikuli-script
.jar testng-6.8.jar velocity-1.7.jar
The first thing to check is, whether the problem is connected with the manifest or something else. If you can run your application with java -cp <allthejarfiles> <main-class> the problem is connected with the manifest. Keep in mind that the jar files specified in the manifest are relative to the jar file’s location. Trying to run the application with the -verbose:class option gives hint about which jar are really loaded.
Your manifest assumes the jars in the current working directory. So it would require dir attribute set to the folder where the jar exists.
Java task supports providing classpath in the arguments. Try giving the classpath in arguments.
<target name="run" depends="jar">
<java jar="build/jar/BANC.jar" fork="true" dir="build/jar" >
<classpath>
<pathelement path="${lib.classpath}"/>
</classpath>
</java>
</target>
I have faced the same issue in my project. I suggest that you should create a separate directory specially for the jar files, put all of your jars in that directory, and then point the lib address to that directory.
for example in your case say I have created a directory D:/jar_collection, where I have put all my jars physically.
<property name="lib.dir" value="D:/jar_collection"/>
<target name="setClassPath">
<path id="classpath_jars">
<fileset dir="${lib.dir}" includes="*.jar" />
</path>
<pathconvert pathsep=":" property="test.classpath" refid="classpath_jars" />
</target>
and it works fine. Please try it once.
I created my first Ant script and it's working pretty well. It compiles all my java sources, creates a .jar file and runs the program without even any warning.
But when i try to run my .jar from command line i get NoClassDefFoundError exceptions.
So, how to translate this Ant snippet to work from command line?
<property name="main.class" value="de.bfs.radon.omsimulation.OMMainFrame"/>
<path id="classpath">
<fileset dir="${lib.dir}" includes="**/*.jar"/>
</path>
<target name="run" depends="jar">
<java fork="true" classname="${main.class}">
<classpath>
<path refid="classpath"/>
<path location="${bin.dir}/omsimulation-${version}.jar"/>
</classpath>
</java>
</target>
This is the command line:
# java -classpath lib/ -jar bin/omsimulation-0.4.45-beta3.jar
Throws:
Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError: com/toedter/calendar/JDateChooser
at de.bfs.radon.omsimulation.OMMainFrame.(OMMainFrame.java:133)
at de.bfs.radon.omsimulation.OMMainFrame$1.run(OMMainFrame.java:106)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
Why does my .jar file not work with the defined classpath? Further down the Ant script:
<target name="jar" depends="manifest">
<mkdir dir="${bin.dir}" />
<jar jarfile="${bin.dir}/omsimulation-${version}.jar" manifest="${src.dir}/omsimulation.manifest" compress="no" basedir="${build.dir}" includes="de/**" />
</target>
<target name="manifest" depends="compile">
<manifestclasspath property="manifest.cp" jarfile="${bin.dir}/omsimulation-${version}.jar">
<classpath refid="classpath" />
</manifestclasspath>
<manifest file="${src.dir}/omsimulation.manifest">
<attribute name="Built-By" value="${author}"/>
<attribute name="Main-Class" value="${main.class}"/>
</manifest>
</target>
Again, running the Ant script works fine. I even tried adding the said libraries to my .jar but that only blows up the file size, the problem still persists.
<jar jarfile="${bin.dir}/omsimulation-${version}.jar" manifest="${src.dir}/omsimulation.manifest" compress="no" basedir="${build.dir}"> <!-- includes="de/**" /-->
<fileset dir="${lib.dir}">
<include name="**/*.jar" />
</fileset>
</jar>
Any ideas on this?
Thanks a lot,
donc_oe
SOLVED: Thanks to perception, the unix command line i was looking for is:
# java -cp lib/*:bin/myjarfile.jar my.package.MyMainClass
And for Windows (note the ; semicolon):
# javaw -cp lib/*;bin/myjarfile.jar my.package.MyMainClass
The relevant thing to note from your build script is this:
<path id="classpath">
<fileset dir="${lib.dir}" includes="**/*.jar"/>
</path>
With that little snippet you have defined a path construct in Ant, which you then refer to in your run task:
<target name="run" depends="jar">
<java fork="true" classname="${main.class}">
<classpath>
<path refid="classpath"/>
<path location="${bin.dir}/omsimulation-${version}.jar"/>
</classpath>
</java>
</target>
This is in effect executing:
java -cp ${lib.dir}/*.jar:${bin.dir}/omsimulation-${version}.jar ${main.class}
Of course, it does so without the squigly lines and the path(s) fully substituted. The main point being that the command you are trying to run yourself is not equivalent at all. When attempting to invoke from the command line you will need to include in the classpath all the necessar JAR's containing your code and all third party libraries. Assuming everything is still bundled in the Ant created folders, something like:
java -cp <full-path-to-lib>/* -jar <full-path-to-bin>/omsimulation-0.4.45-beta3.jar
Or:
java -cp <full-path-to-lib?/*:<full-path-to-bin>/omsimulation-0.4.45-beta3.jar <MainClass>
ClassDefNotFoundException most likely occur when class is found in classpath, but it is loaded in different classloader, or in a wrong path etc.
From the build file, you appears to create jar that include other jars. This may not give a result you want.
Most likely you want a solution described in Easiest way to merge a release into one JAR file. My personal favorite is one-jar.
I'm having a problem getting the javac used by Ant to find and use certain packages. When I invoke javac directly from the command line the packages are found and used.
The .jar files are located in my home directory under lib/java. This is my classpath:
/home/bliskovs/lib/java/*:/home/bliskovs/vendor/cytoscape-v2.7.0/cytoscape.jar
This is the relevant section in my build.xml:
<target name="compile">
<javac srcdir="." debug="true"/>
<javac srcdir="tools/" debug="true"/>
<javac srcdir="core/" debug="true"/>
</target>
How can I get Ant to recognize these packages?
Check out this.
<property name="build.classes.dir" location="build/classes"/>
<path id="compile.classpath">
<fileset dir="lib"/>
<pathelement location="/home/bliskovs/vendor/cytoscape-v2.7.0"/>
</path>
<target name="compile" description="Compile src dir">
<javac destdir="${build.classes.dir}" debug="true" includeantruntime="true">
<src location="src"/>
<classpath refid="compile.classpath"/>
</javac>
</target>
Define a classpath for the javac task. Relying on the CLASSPATH environment variable is a bad practice. It's even more true for the build process of a project, which should work without having to setup a whole lot of environment variables. If you start developing three or four projects at once, you'll understand why using a single CLASSPATH env variable is a bad idea.
See http://ant.apache.org/manual/Tasks/javac.html to know how to define a classpath inside the build.xml and use it in the javac task.