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Problem with Eclipse and the servicegen task of weblogic

Debajyoti Pathak
Ranch Hand

Joined: Dec 18, 2000
Posts: 39
I am trying to build webservices from within Eclipse using Ant. For that I am using the weblogic 'servicegen' ant task. But I get the following error.
( I have included both weblogic.jar and webservices.jar in the ant path under windows>preferences>ant>runtime, but that doesn't work. The same build file however works from the command prompt). I have also included the build file and error message below.


Buildfile: C:\eclipse\workspace\WebServices\src\build.xml
[echo] C:\eclipse\plugins\org.apache.ant_1.6.2\lib\ant.jar;C:\eclipse\plugins\org.apache.ant_1.6.2\lib\ant-antlr.jar;C:\eclipse\plugins\org.apache.ant_1.6.2\lib\ant-apache-bcel.jar;C:\eclipse\plugins\org.apache.ant_1.6.2\lib\ant-apache-bsf.jar;C:\eclipse\plugins\org.apache.ant_1.6.2\lib\ant-apache-log4j.jar;C:\eclipse\plugins\org.apache.ant_1.6.2\lib\ant-apache-oro.jar;C:\eclipse\plugins\org.apache.ant_1.6.2\lib\ant-apache-regexp.jar;C:\eclipse\plugins\org.apache.ant_1.6.2\lib\ant-apache-resolver.jar;C :\eclipse\plugins\org.apache.ant_1.6.2\lib\ant-commons-logging.jar;C:\eclipse\plugins\org.apache.ant_1.6.2\lib\ant-commons-net.jar;C:\eclipse\plugins\org.apache.ant_1.6.2\lib\ant-icontract.jar;C:\eclipse\plugins\org.apache.ant_1.6.2\lib\ant-jai.jar;C:\eclipse\plugins\org.apache.ant_1.6.2\lib\ant-javamail.jar;C:\eclipse\plugins\org.apache.ant_1.6.2\lib\ant-jdepend.jar;C:\eclipse\plugins\org.apache.ant_1.6.2\lib\ant-jmf.jar;C:\eclipse\plugins\org.apache.ant_1.6.2\lib\ant-jsch.jar;C:\eclipse\plugin s\org.apache.ant_1.6.2\lib\ant-junit.jar;C:\eclipse\plugins\org.apache.ant_1.6.2\lib\ant-launcher.jar;C:\eclipse\plugins\org.apache.ant_1.6.2\lib\ant-netrexx.jar;C:\eclipse\plugins\org.apache.ant_1.6.2\lib\ant-nodeps.jar;C:\eclipse\plugins\org.apache.ant_1.6.2\lib\ant-starteam.jar;C:\eclipse\plugins\org.apache.ant_1.6.2\lib\ant-stylebook.jar;C:\eclipse\plugins\org.apache.ant_1.6.2\lib\ant-swing.jar;C:\eclipse\plugins\org.apache.ant_1.6.2\lib\ant-trax.jar;C:\eclipse\plugins\org.apache.ant_1.6.2\l ib\ant-vaj.jar;C:\eclipse\plugins\org.apache.ant_1.6.2\lib\ant-weblogic.jar;C:\eclipse\plugins\org.apache.ant_1.6.2\lib\ant-xalan1.jar;C:\eclipse\plugins\org.apache.ant_1.6.2\lib\ant-xslp.jar;C:\eclipse\plugins\org.eclipse.ant.ui_3.0.2\lib\remoteAnt.jar;C:\bea\jdk141_03\lib\tools.jar;C:\bea\weblogic81\server\lib\weblogic.jar;C:\bea\weblogic81\server\lib\webservices.jar
BUILD FAILED: C:\eclipse\workspace\WebServices\src\build.xml:8: Could not create task or type of type: servicegen.

Ant could not find the task or a class this task relies upon.

This is common and has a number of causes; the usual
solutions are to read the manual pages then download and
install needed JAR files, or fix the build file:
- You have misspelt 'servicegen'.
Fix: check your spelling.
- The task needs an external JAR file to execute
and this is not found at the right place in the classpath.
Fix: check the documentation for dependencies.
Fix: declare the task.
- The task is an Ant optional task and the JAR file and/or libraries
implementing the functionality were not found at the time you
yourself built your installation of Ant from the Ant sources.
Fix: Look in the ANT_HOME/lib for the 'ant-' JAR corresponding to the
task and make sure it contains more than merely a META-INF/MANIFEST.MF.
If all it contains is the manifest, then rebuild Ant with the needed
libraries present in ${ant.home}/lib/optional/ , or alternatively,
download a pre-built release version from
- The build file was written for a later version of Ant
Fix: upgrade to at least the latest release version of Ant
- The task is not an Ant core or optional task
and needs to be declared using <taskdef>.
- You are attempting to use a task defined using
<presetdef> or <macrodef> but have spelt wrong or not
defined it at the point of use

Remember that for JAR files to be visible to Ant tasks implemented
in ANT_HOME/lib, the files must be in the same directory or on the

Please neither file bug reports on this problem, nor email the
Ant mailing lists, until all of these causes have been explored,
as this is not an Ant bug.
Total time: 1 second

build file

<project name="buildWebservice" default="ear">
<target name="ear">
<echo message="${java.class.path}"/>
<path id="myid">
<pathelement path="${java.class.path}"/>
<pathelement path="."/>
<servicegen destEar="testWebService.ear" contextURI="WebServices" >
<classpath refid="myid"/>

style="rpc" >
<client packageName="com.wls8unleashed.webservices.javaclass" />

Please help me out.

Thanks in advance
Debajyoti Pathak
Ranch Hand

Joined: Dec 18, 2000
Posts: 39
Go the solution to my problem.I added a taskdef to my build file.
<taskdef name="servicegen" classname="weblogic.ant.taskdefs.webservices.servicegen.ServiceGenTask"/>

But the point that I still do not get is, how does the same build file ( without the taskdef) work from the command prompt ?

I would appreciate your inputs on the above.

I agree. Here's the link:
subject: Problem with Eclipse and the servicegen task of weblogic
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