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ant build missing jar from lib

I have a build.xml and I have a path for the classpath that I set to classpathref="compile.classpath" during compile:
<path id="compile.classpath">
<fileset dir="./lib">
<include name="*" />
</fileset>
</path>
The lib folder contains weblogic.jar but when i try to compile the project, i got many errors because of missing the weblogic.jar
If I modify my path to this:
<path id="compile.classpath">
<fileset dir="./lib">
<include name="*" />
</fileset>
<fileset dir="${env.WL_HOME}/wlserver/server/lib">
<include name="weblogic.jar" />
</fileset>
</path>
So I add the weblogic.jar from my local installed weblogic directory, there are no errors, and it's compiled.
I copied the weblogic.jar to my project lib folder from the local installed weblogic folder, so it must be the same weblogic.jar
What should I try? Thank you!

I would do something like this in your build.xml (probably just before you do the compilation will work).
<property name="echo.classpath" refid="compile.classpath"/>
<echo message="compileClasspath - ${echo.classpath}"/>
What you probably need to do is to be quite explicit about where your lib directory is, relative paths are tricky if you have multiple build.xml files, and nested directories and stuff.
What I have done before is to make sure that you explicitly define a property in the right place for your lib directory, and just use that rather than ./
<project basedir=".">
<target name="init">
<property name="local.lib.dir" value="${basedir}/lib">
</target>
<target name="compile" depends="init">
<path id="compile.classpath">
<fileset dir="${local.lib.dir}">
<include name="*" />
</fileset>
</path>
....
</target>
</project>

Classpath element is not a jar

I am trying to write a ant build which calls a Java class
<target name="validate" depends="forge-jar">
<taskdef name="spec" classname="SpecBuild" classpathref="java.classpath" />
<spec a="${forge}" mail="${mail}" dd="${dd}" wdd="${wdd}"/>
</target>
<target name="forge-jar" >
<path id="project.class.path">
<pathelement location="classes/" />
<pathelement path="classes/ant/tasks/SpecBuild.class" />
</path>
<path id="java.classpath">
<path refid="project.class.path" />
</path>
<javac includeantruntime="false" srcdir="src" destdir="classes" classpathref="java.classpath">
<filename name="**/SpecBuild.java" />
</javac>
</target>
In the SpecBuild.java class if I use slf4j logger I am getting this warning :-
CLASSPATH element /Users/classes/ant/tasks/SpecBuild.class is not a JAR.
[taskdef] CLASSPATH element /Users/classes/ant/tasks/SpecBuild.class is not a JAR.
Can anyone please help me fix this

You can specify the 'classes' directory in the class path as below. Remove the 'SpecBuild.class' file from pathElement location. You can either use 'includes' property and mention the file name in it or just include the 'classes' directory as below (exclude the JUni test cases package, if you have).
<classpath>
<pathelement path="${classpath}"/>
<fileset dir="lib">
<include name="**/*.jar"/>
</fileset>
<pathelement location="classes"/>
<dirset dir="${build.dir}">
<include name="apps/**/classes"/>
<exclude name="apps/**/*Test*"/>`enter code here`
</dirset>
</classpath>
Good luck.

ant javac exclude everything not included

I am trying to write a build script for a REST service which sits on top of our existing business logic layer, however, I only want to include the minimal amount of sources to keep the service small and only contain what it absolutely needs.
Below is my current compile target. I am able to either include everything or nothing. I assume I am making a simple mistake I can't seem to spot or find online.
<target name="compile">
<mkdir dir="${build.classes.dir}"/>
<javac source="1.6"
target="1.6"
encoding="UTF-8"
debug="true"
debuglevel="lines,vars,source"
srcdir="${basedir}"
destdir="${build.classes.dir}"
includeAntRuntime="false">
<src>
<dirset dir="${src.eai.dir}" errorOnMissingDir="true">
<include name="common/vo/MyPojo.java"/>
<include name="common/SomeException.java"/>
</dirset>
<dirset dir="${src.ets.dir}" errorOnMissingDir="true">
<include name="common/vo/AnotherPojo.java" />
<include name="price/vo/YetAnotherPojo.java" />
<include name="price/vo/OneMorePojo.java" />
</dirset>
<dirset dir="${src.java.dir}" errorOnMissingDir="true">
<include name="java"/>
</dirset>
</src>
<!-- this line ignores everything, without it it includes everything -->
<exclude name="**/*.java"/>
<classpath refid="classpath"/>
</javac>
</target>
Is there a way to only include the files specified above?

In place of exclude, try include and list your java files separated with comma(,) e.g:
<include name="common/vo/MyPojo.java,common/SomeException.java,common/vo/AnotherPojo.java,price/vo/YetAnotherPojo.java" />

Don't set both the srcdir attribute and the nested <src> element, as I imagine Ant is simply combining the two.

Run ant script from command,error happened:Class not found: org.eclipse.jdt.core.JDTCompilerAdapter

In my java web project,there are code like <T> , in ant script, javac use JDK to compile java code, and it can't compile success.
Later,I know it must use eclipse JDT to compile.
And, in eclipse, ant script can run success.when run like this:
Right key click build.xml ---> Run ---> Run as ---> External Tools Configurations,click JRE,select "Run in the same JRE as the workspace".
After that, ant can run successful, in eclipse.
But, I want to write a .bat and .sh file to call ant script, to compile,war,deploy and start Tomcat.
So, ant should run from command. I tried more, error happend always:
Class not found: org.eclipse.jdt.core.JDTCompilerAdapter
PS, I have copy jar files about JDT in eclipse plugin to ant_home/lib directory.
Wish your response. Thanks in advance!
build.xml
`
<tstamp>
<format property="build.time" pattern="yyyy-MM-dd" />
</tstamp>
<path id="project.classpath">
<fileset dir="${lib.dir}">
<include name="**/*.jar" />
</fileset>
<fileset dir="${catalina.home}/lib">
<include name="*.jar" />
</fileset>
<fileset dir="${ant.dir}">
<include name="**/*.jar" />
</fileset>
</path>
<target name="clear">
<delete dir="${build.dir}" />
<delete dir="${dist.dir}" />
<delete file="${catalina.home}/webapps/${webapp.name}.war" />
<delete dir="${catalina.home}/webapps/${webapp.name}" />
</target>
<target name="init" depends="clear">
<mkdir dir="${build.dir}/classes" />
<mkdir dir="${dist.dir}" />
</target>
<target name="compile" depends="init">
<echo message="begin compile..." />
<javac srcdir="${src.dir}" destdir="${build.dir}/classes"
includeantruntime="false" nowarn="on"
source="1.6" target="1.6" deprecation="true" debug="true"
encoding="UTF-8" classpathref="project.classpath">
<compilerarg line="-Xlint:unchecked" />
</javac>
<copy todir="${build.dir}">
<fileset dir="${src.dir}">
<include name="**/*.xml" />
<include name="**/*.properties" />
<include name="**/*.sql" />
</fileset>
<fileset dir="${config.dir}">
<include name="**/*.xml" />
<include name="**/*.properties" />
<include name="**/*.sql" />
</fileset>
</copy>
<echo message="end compile..." />
</target>
<target name="war" depends="compile">
<echo message="begin war..." />
<war destfile="${dist.dir}/${webapp.name}.war" basedir="${webRoot.dir}"
webxml="${webRoot.dir}/WEB-INF/web.xml">
<lib dir="${lib.dir}" />
<classes dir="${build.dir}/classes" />
<fileset dir="${webRoot.dir}">
<include name="***.*" />
</fileset>
</war>
<echo message="end war..." />
</target>
<target name="deploy" depends="war">
<echo message="begin deploy..." />
<copy file="${dist.dir}/${webapp.name}.war" todir="${catalina.home}/webapps" />
<echo message="end deploy..." />
</target>
</project>
`

Don't use the ant from eclipse IDE for usage from command line.
Download ant separately and extract it somewhere like - C:\apache\ant - for windows, and put its bin directory in your PATH. It'll come with some jars that will need to be added to your CLASSPATH too.
For Mac OSX 'sudo port install ant" takes care of everything.

Download ecj*.jar from Eclipse and put in under ANT_HOME/lib.
Make sure that ANT_HOME is set under the shell environment or you should set the ecj*.jar in the CLASSPATH on the shell. (Otherwise, a Class not found: org.eclipse.jdt.core.JDTCompilerAdapter might be still thrown.)

For the record, I am also getting this error randomly (works more often than not) when using the <javac> task with that compiler adapter in a <parallel> context, i.e. in multi-threaded situation.
It looks as if the compiler adapter jar is temporarily locked and can't be accessed by the thread classloader or something. I don't have a workaround for it yet, short of removing the <parallel> execution.

Ant built does not generate class files

I'm using build.xml to build my src. However it failed to generate class files without any error message. The full script is
<?xml version="1.0"?>
<project name="auxiliary" basedir="." default="dist">
<property name="src.dir" value="../auxiliary-src/com/nextbio/drugbank"/>
<property name="dist.dir" value="dist"/>
<property name="lib.dir" value="../jboss_config/common_app_jars"/>
<property name="temp.dir" value="temp"/>
<property name="foo_dist.dir" value="../foo/dist"/>
<path id="libs-classpath">
<fileset dir="${foo_dist.dir}">
<include name="foo.jar"/>
</fileset>
</path>
<target name="dist" depends="auxiliary-dist" />
<target name="auxiliary-cleanup">
<delete dir="${temp.dir}"/>
<delete dir="${dist.dir}"/>
<echo message="cleaned up. ${temp.dir}, and ${dist.dir} have been deleted."/>
</target>
<target name ="auxiliary-dist">
<delete dir="${temp.dir}"/>
<echo message="delete ${temp.dir}" />
<mkdir dir="${temp.dir}"/>
<javac destdir="${temp.dir}" source="1.6" target="1.6" debug="on" fork="true" memorymaximumsize="1024m">
<src path="${src.dir}"/>
<classpath>
<path refid="libs-classpath"/>
</classpath>
<include name="com/car/**"/> <!-- troubled line -->
</javac>
<!--<copy overwrite="true" todir="${temp.dir}">
<fileset dir="${src.dir}">
<exclude name="**/*.java"/>
<exclude name="**/*.sql"/>
<exclude name="**/*.txt"/>
</fileset>
</copy>
<delete dir="${dist.dir}"/>
<mkdir dir="${dist.dir}"/>
<jar destfile="${dist.dir}/auxiliary.jar" basedir="${temp.dir}"/> -->
</target>
There is no class file in ${temp.dir} after this step, and no error message. I double checked it, and found it is because of the "troubled line". I tried to add some files to the classpath. I don't know why it is wrong.

The source path should point to the root of the package tree. You make it point to a specific package inside the sources : ../auxiliary-src/com/nextbio/drugbank.
And in the javac task, you ask it to compile all the files matching the pattern com/car/**. That means that it will compile the Java source files in ../auxiliary-src/com/nextbio/drugbank/com/car or in a subdirectory. If that's the case, you have very unconventional package names.

I had the same problem.
My project complilated well but the classes there weren't in nowhere and It didn't have any error message.
My problem was the classpath. The eclipse wizard added EclipseLink 2.5.1 jars.
I removed it and the problem is gone.
I suggest make a simple HelloWord and remove all jars
reference from the classpath and try again.

I encountered this "ant, javac, compile" problem related with the classpath to.
No debug or verbose message shown.
This behavior appear because in classpath exists not compatible (superior) version jar packages and that cause no output classes.