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Subject: Re: Class Loader Problems with Tomcat 8 + Ant Task
From: Amit Lonkar <amitlonkar@yahoo.com.INVALID>
In-Reply-To: <CB85E266-DA27-432A-AA94-91C368570AD6@yahoo.com>
Date: Thu, 1 Oct 2015 09:03:12 -0600
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Message-Id: <02C8B688-C3A8-4CA7-BC76-7BE38E93A858@yahoo.com>
References: <52CE6475-E174-408D-8FB1-23F06C4C1FDA@yahoo.com>
 <5605B2F4.9040407@christopherschultz.net>
 <CB85E266-DA27-432A-AA94-91C368570AD6@yahoo.com>
To: Tomcat Users List <users@tomcat.apache.org>

Hi Chris

Any ideas why the Ant Task might be failing in Tomcat 8?=20
Yes the application works on a clean fresh tomcat 7 but not on tomcat 8.

We have a Administrator application that is used for patching our =
scheduling software. The patch includes the war files and get deployed =
to all nodes using the Ant Task.

Thanks
Amit

=20


> On Sep 25, 2015, at 2:55 PM, Amit Lonkar =
<amitlonkar@yahoo.com.INVALID> wrote:
>=20
> Yes its an Administrator web application used to deploy our product =
war files to customers via a patch. I just posted a example of a servlet =
to help reproduce it.
>=20
> =E2=80=94 Amit
>> On Sep 25, 2015, at 2:47 PM, Christopher Schultz =
<chris@christopherschultz.net> wrote:
>>=20
>> -----BEGIN PGP SIGNED MESSAGE-----
>> Hash: SHA256
>>=20
>> Amit,
>>=20
>> On 9/24/15 2:24 PM, Amit Lonkar wrote:
>>> We are trying to upgrade from Tomcat 7 to Tomcat 8. One of the=20
>>> functionalities we have is to deploy a war file using the
>>> DeployTask class. I have a simple test servlet that uses the
>>> DeployClass.
>>=20
>> Stop right there.
>>=20
>> You have a servlet that is using the DeployTask for something? That
>> sounds ... astoundingly weird to me. Can you explain this use case?
>> The only thing I can think of is a web application used to deploy web
>> applications.
>>=20
>>> I keep getting he following exception. I have ant 1.9.6 and=20
>>> catalina-ant-8.0.26 in the class path. The maven project is
>>> attached. Works fine on Tomcat 7.0.64 but not on Tomcat 8.0.26.
>>>=20
>>> *Tomcat Version: *8.0.26 *Java:* jdk1.8.0_45 *OS:* OSX *Class
>>> Path:*
>>>=20
>>> * ant-1.9.6 * ant-launcher-1.9.6 * javax.servlet-api-3.1.0 *
>>> tomcat-api-8.0.26 * tomcat-catalina-ant-8.0.26 *
>>> tomcat-juli-8.0.26 * tomcat-servlet-api-8.0.26 *
>>> tomcat-util-8.0.26 * tomcat-util-scan-8.0.26
>>>=20
>>>=20
>>> *Exception Message:* javax.servlet.ServletException: Servlet
>>> execution threw an exception
>>>=20
>>> =
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
>>>=20
>>> *root cause*
>>>=20
>>> java.lang.NoClassDefFoundError: org/apache/tools/ant/Task=20
>>> java.lang.ClassLoader.defineClass1(Native Method)=20
>>> java.lang.ClassLoader.defineClass(ClassLoader.java:760)=20
>>> =
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142
>> )
>>>=20
>>>=20
>> java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
>>> java.net.URLClassLoader.access$100(URLClassLoader.java:73)=20
>>> java.net.URLClassLoader$1.run(URLClassLoader.java:368)
>>>=20
>>>=20
>>> // Exception is thrown when trying to instantiate DeployTask
>>>=20
>>> DeployTask oTask =3D new DeployTask(); oTask.setAlwaysLog(true);=20
>>> oTask.setAppend(false); oTask.setCreateEmptyFiles(true);=20
>>> oTask.setError(oTaskError); oTask.setFailonerror(true);=20
>>> oTask.setLogError(true); oTask.setOutput(oTaskOutput);=20
>>> oTask.setPassword("adminManagerScript"); oTask.setPath("/broker");=20=

>>> oTask.setProject(new Project()); oTask.setTag("v7");=20
>>> oTask.setUpdate(true);=20
>>> oTask.setUrl("http://localhost:8080/manager/text");=20
>>> oTask.setUsername("adminManagerScript");=20
>>> =
oTask.setWar("/Users/amitlonkar/Documents/Builds/2015-09-23_1612/v7bro
>> ker.war");
>>>=20
>>>=20
>> oTask.execute();
>>=20
>> This application works on a clean, fresh Tomcat 7 but not on a clean,
>> fresh Tomcat 8?
>>=20
>> - -chris
>> -----BEGIN PGP SIGNATURE-----
>> Comment: GPGTools - http://gpgtools.org
>>=20
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>> vysGmaX3rQK250gUVnj3
>> =3DannF
>> -----END PGP SIGNATURE-----
>>=20
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>>=20
>=20
>=20
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>=20


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