Hi,
JspC error while doing PreCompilation,
I 'am using ant 1.6.2 and tomcat 5. When I call jspc from ant it is
thworing invaid cast exception. In JspRunTimeContext class. It is getting the
current thread classloader and casting to URL classloader..
parentClassLoader =
(URLClassLoader)Thread.currentThread().getContextClassLoader();
This is because Thread.currentThread().getContextClassLoader() is returning
AntClassLoader.
which is incompatible with URLClassLoader. Hence thrwoing ClassCastException.
The detail exception is, Please don't consider the line number in the below
stack Trace.
The code thrwoing the exception is above given in bold font of
org.apache.jasper.compiler.JspRuntimeContext class.
[java] java.lang.ClassCastException
[java] at
org.apache.jasper.compiler.JspRuntimeContext.<init>(JspRuntimeContext.java:46)
[java] at org.apache.jasper.JspC.initServletContext(JspC.java:866)
[java] at org.apache.jasper.JspC.execute(JspC.java:735)
[java] at org.apache.jasper.JspC.main(JspC.java:71)
[java] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[java] at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
[java] at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
[java] at java.lang.reflect.Method.invoke(Method.java:324)
[java] at
org.apache.tools.ant.taskdefs.ExecuteJava.run(ExecuteJava.java:193)
[java] at
org.apache.tools.ant.taskdefs.ExecuteJava.execute(ExecuteJava.java:130)
[java] at org.apache.tools.ant.taskdefs.Java.run(Java.java:705)
[java] at org.apache.tools.ant.taskdefs.Java.executeJava(Java.java:177)
[java] at org.apache.tools.ant.taskdefs.Java.execute(Java.java:83)
[java] at
org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275)
[java] at org.apache.tools.ant.Task.perform(Task.java:364)
[java] at org.apache.tools.ant.Target.execute(Target.java:341)
[java] at org.apache.tools.ant.Target.performTasks(Target.java:369)
[java] at org.apache.tools.ant.Project.executeTarget(Project.java:1214)
[java] at org.apache.tools.ant.Project.executeTargets(Project.java:1062)
[java] at org.apache.tools.ant.Main.runBuild(Main.java:673)
[java] at org.apache.tools.ant.Main.startAnt(Main.java:188)
[java] at org.apache.tools.ant.launch.Launcher.run(Launcher.java:196)
[java] at org.apache.tools.ant.launch.Launcher.main(Launcher.java:55)
I 'am stuck up in this, This is a class loader issue. It would be a great help
if anybody has a solution for this. After this exception, there is a code to
set current thread class loader to URL classLoader in JspC.java.
Regards,
Jagga
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