java.lang.ClassNotFoundException

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    • java.lang.ClassNotFoundException: javax.activation.DataHandler Thanks, Patrick On Wed, Jan 19, 2011 at 10:31 AM, Patrick Martin <antuser@gmail.com> wrote: > Hello, > > Is it possible to use the <mail> task without having activation.jar > and mail.jar in the ant lib folder? > > I tried to redefine the mail task this way: > > <taskdef name="mymail" > classname="org.apache.tools.ant.taskdefs.email.MimeMailer"> <classpath>        <pathelement location="${ant.home}/lib/ant-javamail.jar" /> <!-- > same with and without this line -->        <pathelement location="a/mail.jar" />        <pathelement location="a/activation.jar" /> </classpath> > </taskdef> > > But it did not work. I keep on getting the following error: > > D:\tmp\build.xml:7: taskdef A class needed by class > org.apache.tools.ant.taskdefs.email.MimeMailer cannot be found: > javax/mail/MessagingException >  using the classloader AntClassLoader[D:\tmp\a\activation.jar] at org.apache.tools.ant.taskdefs.Definer.addDefinition(Definer.java:627) at org.apache.tools.ant.taskdefs.Definer.execute(Definer.java:239) at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106) at org.apache.tools.ant.Task.perform(Task.java:348) at org.apache.tools.ant.Target.execute(Target.java:390) at org.apache.tools.ant.Target.performTasks(Target.java:411) at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1399) at org.apache.tools.ant.Project.executeTarget(Project.java:1368) at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41) at org.apache.tools.ant.Project.executeTargets(Project.java:1251) at org.apache.tools.ant.Main.runBuild(Main.java:809) at org.apache.tools.ant.Main.startAnt(Main.java:217) at org.apache.tools.ant.launch.Launcher.run(Launcher.java:280) at org.apache.tools.ant.launch.Launcher.main(Launcher.java:109)
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