execute class in jar file with ant - ant

I have a jar with the following structure
com
merc
test.class
lib
xyz.jar
applicationContext.xml
test.class uses xyz.jar. Using ant java task, how do i include the lib folder in the classpath, so that I can execute test.class
Thanks

Did you try as documented here (like the snippet below) and if so, did you get any error?
<java classname="com.merc.test">
<classpath>
<pathelement location="lib/xyz.jar"/>
</classpath>
</java>

Related

Could not load definitions from resource when using ant task

I'm using ant-contrib in my build script
<taskdef resource="net/sf/antcontrib/antcontrib.properties">
<classpath>
<pathelement location="ant/ant-contrib-0.6.jar"/>
</classpath>
</taskdef>
It works. But when I'm calling some target in this script from another ant file using ant task, I'm getting the error.
<ant antfile="build.xml" target="make" dir="${client.project.location}/ant"/>
Please, help me to fix the problem. Thanks
In your code we can see
<classpath>
<pathelement location="ant/ant-contrib-0.6.jar"/>
</classpath>
You need to give path location="/home/[some
path]/ant-contrib-0.6.jar"
you can do one more thing,you need to copy your ant-contrib-0.6.jar
into ANT_HOME/lib folder and remove your tag completely from you code.
Note: Second option is always better.
I had to set usenativebasedir="true" when calling ant task

Apache ant does not recognize 'for' task/macro, although I have added ant-contrib via taskdef

I am getting following while doing ant build:
Build\build.xml:247: Problem: failed to create task or type
for
Cause: The name is undefined.
Action: Check the spelling.
Action: Check that any custom tasks/types have been declared.
Action: Check that any <presetdef>/<macrodef> declarations have taken place.
build.xml line 247 is <for param="file">
Already defined <taskdef resource="net/sf/antcontrib/antcontrib.properties"/>, it didn't work. Then I specifically added following but it is still not working.
<taskdef resource="net/sf/antcontrib/antcontrib.properties">
<classpath>
<pathelement location="${env.ANT_HOME}/lib/ant-contrib-1.0b3.jar"/>
</classpath>
</taskdef>
I have ant-contrib-1.0b3.jar at C:\Softwares\apache-ant-1.8.4\lib directory. What is missing here?
If you placed the AntContrib jar in $ANT_HOME/lib directory, all you really need to do is this:
<taskdef resource="net/sf/antcontrib/antcontrib.properties"/>
Actually to use the <for/> task, you need to do this:
<taskdef resource="net/sf/antcontrib/antlib.xml"/>
Note you have to use antlib.xml and not antcontrib.properties. Read the Installation directions very carefully. It's easy to miss.
If you are doing this in a group project, I recommend that you put your ant-contrib.jar in your project. THen add them to your project in your version control system. That way, other developers can use your build with the ant-contrib tasks without downloading the ant-contrib jar and installing it in their $ANT_HOME directory themselves.
Let's say you create a directory called ant-contrib.dir and put that in the root of your project, then put the ant-contrib jar in that folder. Just put this in your project:
<taskdef resource="net/sf/antcontrib/antlib.xml">
<classpath>
<fileset dir="${basedir}/ant-contrib.dir"/>
</classpath>
</taskdef>
Ant needs to be aware of the the dependency. The following is a more succinct version of David W's answer. Add the equivalent of the following to your ant project:
<taskdef resource="net/sf/antcontrib/antcontrib.properties" classpath="relative/path/to/ant-contrib-1.0b3.jar"/>
<taskdef resource="net/sf/antcontrib/antlib.xml" classpath="relative/path/to/ant-contrib-1.0b3.jar"/>

Compiling a build.xml file using Ant

I recently installed Ant 1.8.4 and JasperReports 4.6.0 on my Ubuntu machine.
The following environmental variables were set on my account:
PATH=$PATH:/opt/ant/bin
export PATH
export ANT_HOME=/opt/ant
export JAVA_HOME=/usr/lib/jvm/java-6-openjdk-amd64
When I try to run a demo build file in the JasperReports demo samples directory using the command ant I get the following error:
Buildfile: build.xml
BUILD FAILED
/opt/jasperreports-4.6.0/demo/samples/antcompile/build.xml:3: The following
error occurred while executing this line:
jar:file:/opt/ant/lib/ant.jar!/org/apache/tools/ant/antlib.xml:37: Problem: failed to create task or type componentdef
Cause: The name is undefined.
Action: Check the spelling.
Action: Check that any custom tasks/types have been declared.
Action: Check that any <presetdef>/<macrodef> declarations have taken place.
Any help in solving this problem will be super helpful.
The snippet of build.xml file:
<project name="antcompile" default="test" basedir=".">
<description>Shows how multiple JRXML files can be compiled in batch mode using ANT.</description>
<path id="classpath">
<pathelement location="../../../build/classes"/>
<fileset dir="../../../lib">
<include name="**/*.jar"/>
</fileset>
</path>
<path id="runClasspath">
<path refid="classpath"/>
<pathelement location="../../fonts"/>
<pathelement location="./build/classes"/>
</path>
<taskdef name="jrc" classname="net.sf.jasperreports.ant.JRAntCompileTask">
<classpath refid="classpath"/>
</taskdef>
<target name="javac" description="Compiles the Java source files used in the report designs.">
<mkdir dir="./build/classes"/>
<javac srcdir="./src" destdir="./build/classes" debug="true" optimize="false" deprecation="false"/>
</target>
<target name="compile1" description="Compiles report designs specified using the "srcdir" in the <jrc> tag."> <!-- 27 row # -->
<mkdir dir="./build/reports"/>
<jrc
srcdir="./reports"
destdir="./build/reports"
tempdir="./build/reports"
keepjava="true"
xmlvalidation="true">
<classpath refid="runClasspath"/>
<include name="**/*.jrxml"/>
</jrc>
</target>
This Ant script is using custom task jrc.
As you can see from the snippet below (this is build.xml file from the jasperreports-4.6.0/demo/samples/antcompile folder), this task's definition refers the classpath from the same build file.
<path id="classpath">
<pathelement location="../../../build/classes"/>
<fileset dir="../../../lib">
<include name="**/*.jar"/>
</fileset>
</path>
...
<taskdef name="jrc" classname="net.sf.jasperreports.ant.JRAntCompileTask">
<classpath refid="classpath"/>
</taskdef>
You should check the ../../../build/classes folder (in JasperReports package's folder structure which contains samples) - the net.sf.jasperreports.ant.JRAntCompileTask class must be there.
In other words you should put this class (or jasperreports-4.6.0.jar) to the classpath (path id="classpath").
Another probable source of your problem is the version of Ant package.
You can read about Project#createTask complains it wouldn't find task componentdef issue on Ant's bugtracker and project.createTask() not working with ant-1.8.2 post.
I made it work by changing the following element in my CLASSPATH, /opt/jasperreports-4.6.0/lib/ant-1.7.1.jar to /opt/ant/lib/ant.jar.
Thanks to Alex for posting the helpful links!
Anjan
You're going have to help us out a bit here...
Are you building JasperReports-4.6.0? Or, are you using JasperReports as part of your build.xml? Is this a test build.xml demoing JasperReports?
The error says Check that any custom tasks/types have been declared, so what is the Ant task in line #37? Is there a in the build.xml? Does it have a classpath defined? If you have a taskdef, please let us see what it is, and what the custom task is.
I'm downloading iReport to see if I can figure out what you're doing, but it's taking 15 minutes. I bet you're supposed to put some jar into $ANT_HOME/lib. Maybe that JasperReports or iReport jarfile.
As soon as I can download iReport and see what you're talking about, I'll update my answer.
Meanwhile, include the relevant code around line #35 in your build.xml and the taskdef task in your build.xml.
Finished downloading iReport and there is no build.xml file in it. You're going to have to post your code, so we can look at it.
Again, my assumption is that there's some jar file that they assumed you'd stick in /opt/ant/lib and didn't.

Add classpath of third party jar in ant build file

I want to use a third party jar file to be used in my ant project.
I guess that I should add something in build.xml file.
Actually I want to add Jsoup dependency in my build file.
I have read somethings after google search but i could not find out.
I already have tried
<classloader loader="system">
<classpath>
<fileset dir="${basedir}" includes="jsoup-1.6.2.jar"/>
</classpath>
</classloader>
Can someone tell me how can I do this ?
Here is one way to add a jar to your javac classpath.
<javac srcdir="${src}" destdir="${classes}">
<classpath>
<pathelement location="jsoup-1.6.2.jar"/>
</classpath>
</javac>
You could also define the classpath outside the scope of javac (e.g. at top-level of your build file) and then refer to it by id in your javac task.
Thanks for your reply. But later on I managed to solve the problem.
Since this is ant project. There is an ivy.xml so just adding ant dependency of jsoup in ivy.xml works fine.

Where to put JAR containing custom ant task?

I've created a custom ant task according to Apache doc.
Running ant, I get:
BUILD FAILED
/home/russ/blackpearl/fun/build.xml:92: taskdef class com.etretatlogiciels.ant.task.SqlScriptPreprocessor cannot be found using the classloader AntClassLoader[]
I have the following in build.xml prior to my use of
<taskdef name="sqlscriptpreprocessor" classname="com.etretatlogiciels.ant.task.SqlScriptPreprocessor" />
...and I've dropped a copy of sqlscriptpreprocessor.jar into my local lib subdirectory (should be on classpath) and even into /usr/bin/ant/lib (which is apache-ant-1.8.2).
Where should this go? Or what other problems are anticipated that I should look for?
Thanks very much for any and all comments.
Russ
Try nesting
<classpath>
<pathelement location="C:\**\**.jar"/>
</classpath>
Inside the taskdef, e.g.
<taskdef resource="net/sf/antcontrib/antcontrib.properties">
<classpath>
<pathelement location="C:\myfolder\ant-contrib-1.0b3.jar"/>
</classpath>
</taskdef>
Ideally it should pick up from ant/lib, but specifying pathelement forces it to look in the given path.

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