Home » Eclipse Projects » Remote Application Platform (RAP) » loader constraint violation on Tomcat
| loader constraint violation on Tomcat [message #75372] |
Mon, 25 February 2008 08:38  |
Eclipse User |
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This is a multi-part message in MIME format.
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Hi,
i use my app lauching it from Eclipse+jetty and all works fine. If i
export my app under tomcat i have loader constraint violation exactly
when i execute the following code in the class that extends
WorkbenchAdvisor:
public void postStartup() {
HttpServletRequest request = RWT.getRequest();
String idmedia = request.getParameter( "idmedia" );
if(idmedia!=null) {
....
do something
}
}
I suppose that a class instance of tomcat goes in conflict with one that
my app bundles try to instance...
Attached you can find the server response. how can i workaround this
problem?
Thanks
Christian
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--------------040305060208020609040600--
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| Re: loader constraint violation on Tomcat [message #75394 is a reply to message #75372] |
Mon, 25 February 2008 10:08  |
| Eclipse User |
|
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|
This is a multi-part message in MIME format.
------=_NextPart_000_01D9_01C87796.5D62E0A0
Content-Type: text/plain;
charset="iso-8859-15"
Content-Transfer-Encoding: quoted-printable
Apache Tomcat/6.0.14 - Error reportHi Christian,
It looks like you have two copies of the servlet api visible.
When running under the servletbridge you don't need to provide the =
javax.servlet bundle since those classes are provided by the app server =
-- Tomcat in this case.
Try removing the javax.servlet bundle from your webapp.
HTH
-Simon
"Christian Alfarano" <zerostress@libero.it> wrote in message =
news:fpugci$kdi$1@build.eclipse.org...
Hi,
i use my app lauching it from Eclipse+jetty and all works fine. If i=20
export my app under tomcat i have loader constraint violation exactly=20
when i execute the following code in the class that extends=20
WorkbenchAdvisor:
public void postStartup() {
HttpServletRequest request =3D RWT.getRequest();
String idmedia =3D request.getParameter( "idmedia" );
if(idmedia!=3Dnull) {
....
do something
}
}
I suppose that a class instance of tomcat goes in conflict with one =
that=20
my app bundles try to instance...
Attached you can find the server response. how can i workaround this=20
problem?
Thanks
Christian
------------------------------------------------------------ -------------=
-----
HTTP Status 500 -=20
------------------------------------------------------------ -------------=
-----
type Exception report
message=20
description The server encountered an internal error () that prevented =
it from fulfilling this request.
exception=20
java.lang.RuntimeException: java.lang.LinkageError: loader constraint =
violation: loader (instance of =
org/eclipse/osgi/internal/baseadaptor/DefaultClassLoader) previously =
initiated loading for a different type with name =
"javax/servlet/http/HttpServletRequest"
=
org.eclipse.rwt.internal.lifecycle.RWTLifeCycle.executeUIThr ead(RWTLifeCy=
cle.java:263)
=
org.eclipse.rwt.internal.lifecycle.RWTLifeCycle.execute(RWTL ifeCycle.java=
:149)
=
org.eclipse.rwt.internal.service.LifeCycleServiceHandler$1.r un(LifeCycleS=
erviceHandler.java:60)
=
org.eclipse.rwt.internal.service.LifeCycleServiceHandler.int ernalService(=
LifeCycleServiceHandler.java:176)
=
org.eclipse.rwt.internal.service.LifeCycleServiceHandler.acc ess$1(LifeCyc=
leServiceHandler.java:168)
=
org.eclipse.rwt.internal.service.LifeCycleServiceHandler$Lif eCycleService=
HandlerSync.doService(LifeCycleServiceHandler.java:133)
=
org.eclipse.rwt.internal.lifecycle.RWTLifeCycleServiceHandle rSync.service=
Internal(RWTLifeCycleServiceHandlerSync.java:45)
=
org.eclipse.rwt.internal.lifecycle.RWTLifeCycleServiceHandle rSync.service=
(RWTLifeCycleServiceHandlerSync.java:34)
=
org.eclipse.rwt.internal.service.LifeCycleServiceHandler.ser vice(LifeCycl=
eServiceHandler.java:140)
=
org.eclipse.rwt.internal.service.ServiceManager$HandlerDispa tcher.service=
(ServiceManager.java:100)
org.eclipse.rwt.internal.engine.RWTDelegate.doPost(RWTDelega te.java:61)
=
org.eclipse.ui.internal.servlet.RequestHandler.service(Reque stHandler.jav=
a:52)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
=
org.eclipse.equinox.http.servlet.internal.ServletRegistratio n.handleReque=
st(ServletRegistration.java:90)
=
org.eclipse.equinox.http.servlet.internal.ProxyServlet.proce ssAlias(Proxy=
Servlet.java:111)
=
org.eclipse.equinox.http.servlet.internal.ProxyServlet.servi ce(ProxyServl=
et.java:59)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
=
org.eclipse.equinox.servletbridge.BridgeServlet.service(Brid geServlet.jav=
a:115)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
root cause=20
java.lang.LinkageError: loader constraint violation: loader (instance of =
org/eclipse/osgi/internal/baseadaptor/DefaultClassLoader) previously =
initiated loading for a different type with name =
"javax/servlet/http/HttpServletRequest"
=
it.mw.frontend.ApplicationWorkbenchAdvisor.postStartup(Appli cationWorkben=
chAdvisor.java:102)
org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2244)
=
org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:37=
2)
org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:153)
it.mw.frontend.Application.createUI(Application.java:15)
=
org.eclipse.rwt.internal.lifecycle.EntryPointManager.createU I(EntryPointM=
anager.java:92)
=
org.eclipse.rwt.internal.lifecycle.RWTLifeCycle.createUI(RWT LifeCycle.jav=
a:212)
=
org.eclipse.rwt.internal.lifecycle.RWTLifeCycle$UIThreadCont roller.run(RW=
TLifeCycle.java:109)
java.lang.Thread.run(Unknown Source)
note The full stack trace of the root cause is available in the Apache =
Tomcat/6.0.14 logs.
------------------------------------------------------------ -------------=
-----
Apache Tomcat/6.0.14
------=_NextPart_000_01D9_01C87796.5D62E0A0
Content-Type: text/html;
charset="iso-8859-15"
Content-Transfer-Encoding: quoted-printable
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD><TITLE>Apache Tomcat/6.0.14 - Error report</TITLE>
<META http-equiv=3DContent-Type content=3D"text/html; =
charset=3Diso-8859-15">
<META content=3D"MSHTML 6.00.6000.16608" name=3DGENERATOR></HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>Hi Christian,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>It looks like you have two copies of =
the servlet=20
api visible.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>When running under the servletbridge =
you don't need=20
to provide the javax.servlet bundle since those classes are provided by =
the app=20
server -- Tomcat in this case.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Try removing the javax.servlet bundle =
from your=20
webapp.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>HTH</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>-Simon</FONT></DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV>"Christian Alfarano" <<A=20
href=3D"mailto:zerostress@libero.it">zerostress@libero.it</A>> =
wrote in=20
message <A=20
=
href=3D"news:fpugci$kdi$1@build.eclipse.org">news:fpugci$kdi$1@build.ecli=
pse.org</A>...</DIV>Hi,<BR><BR>i=20
use my app lauching it from Eclipse+jetty and all works fine. If i =
<BR>export=20
my app under tomcat i have loader constraint violation exactly =
<BR>when i=20
execute the following code in the class that extends=20
<BR>WorkbenchAdvisor:<BR><BR>public void postStartup()=20
{<BR><BR> =
HttpServletRequest=20
request =3D=20
RWT.getRequest();<BR> =
String=20
idmedia =3D request.getParameter( "idmedia"=20
);<BR> =
if(idmedia!=3Dnull)=20
{<BR> ....<BR>do=20
something<BR> =20
}<BR>}<BR><BR><BR>I suppose that a class instance of tomcat goes in =
conflict=20
with one that <BR>my app bundles try to instance...<BR>Attached you =
can find=20
the server response. how can i workaround this=20
<BR>problem?<BR>Thanks<BR><BR>Christian<BR>
<P>
<HR>
<P></P>
<STYLE>H1 {
FONT-SIZE: 22px; COLOR: white; FONT-FAMILY: Tahoma,Arial,sans-serif; =
BACKGROUND-COLOR: #525d76
}
H2 {
FONT-SIZE: 16px; COLOR: white; FONT-FAMILY: Tahoma,Arial,sans-serif; =
BACKGROUND-COLOR: #525d76
}
H3 {
FONT-SIZE: 14px; COLOR: white; FONT-FAMILY: Tahoma,Arial,sans-serif; =
BACKGROUND-COLOR: #525d76
}
BODY {
COLOR: black; FONT-FAMILY: Tahoma,Arial,sans-serif; BACKGROUND-COLOR: =
white
}
B {
COLOR: white; FONT-FAMILY: Tahoma,Arial,sans-serif; BACKGROUND-COLOR: =
#525d76
}
P {
FONT-SIZE: 12px; BACKGROUND: white; COLOR: black; FONT-FAMILY: =
Tahoma,Arial,sans-serif
}
A {
COLOR: black
}
A.name {
COLOR: black
}
HR {
COLOR: #525d76
}
</STYLE>
<H1>HTTP Status 500 - </H1>
<HR noShade SIZE=3D1>
<P><B>type</B> Exception report</P>
<P><B>message</B> <U></U></P>
<P><B>description</B> <U>The server encountered an internal error () =
that=20
prevented it from fulfilling this request.</U></P>
<P><B>exception</B> </P><PRE>java.lang.RuntimeException: =
java.lang.LinkageError: loader constraint violation: loader (instance of =
org/eclipse/osgi/internal/baseadaptor/DefaultClassLoader) previously =
initiated loading for a different type with name =
"javax/servlet/http/HttpServletRequest"
=
org.eclipse.rwt.internal.lifecycle.RWTLifeCycle.executeUIThr ead(RWTLifeCy=
cle.java:263)
=
org.eclipse.rwt.internal.lifecycle.RWTLifeCycle.execute(RWTL ifeCycle.java=
:149)
=
org.eclipse.rwt.internal.service.LifeCycleServiceHandler$1.r un(LifeCycleS=
erviceHandler.java:60)
=
org.eclipse.rwt.internal.service.LifeCycleServiceHandler.int ernalService(=
LifeCycleServiceHandler.java:176)
=
org.eclipse.rwt.internal.service.LifeCycleServiceHandler.acc ess$1(LifeCyc=
leServiceHandler.java:168)
=
org.eclipse.rwt.internal.service.LifeCycleServiceHandler$Lif eCycleService=
HandlerSync.doService(LifeCycleServiceHandler.java:133)
=
org.eclipse.rwt.internal.lifecycle.RWTLifeCycleServiceHandle rSync.service=
Internal(RWTLifeCycleServiceHandlerSync.java:45)
=
org.eclipse.rwt.internal.lifecycle.RWTLifeCycleServiceHandle rSync.service=
(RWTLifeCycleServiceHandlerSync.java:34)
=
org.eclipse.rwt.internal.service.LifeCycleServiceHandler.ser vice(LifeCycl=
eServiceHandler.java:140)
=
org.eclipse.rwt.internal.service.ServiceManager$HandlerDispa tcher.service=
(ServiceManager.java:100)
org.eclipse.rwt.internal.engine.RWTDelegate.doPost(RWTDelega te.java:61)
=
org.eclipse.ui.internal.servlet.RequestHandler.service(Reque stHandler.jav=
a:52)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
=
org.eclipse.equinox.http.servlet.internal.ServletRegistratio n.handleReque=
st(ServletRegistration.java:90)
=
org.eclipse.equinox.http.servlet.internal.ProxyServlet.proce ssAlias(Proxy=
Servlet.java:111)
=
org.eclipse.equinox.http.servlet.internal.ProxyServlet.servi ce(ProxyServl=
et.java:59)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
=
org.eclipse.equinox.servletbridge.BridgeServlet.service(Brid geServlet.jav=
a:115)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
</PRE>
<P></P>
<P><B>root cause</B> </P><PRE>java.lang.LinkageError: loader =
constraint violation: loader (instance of =
org/eclipse/osgi/internal/baseadaptor/DefaultClassLoader) previously =
initiated loading for a different type with name =
"javax/servlet/http/HttpServletRequest"
=
it.mw.frontend.ApplicationWorkbenchAdvisor.postStartup(Appli cationWorkben=
chAdvisor.java:102)
org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2244)
=
org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:37=
2)
org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:153)
it.mw.frontend.Application.createUI(Application.java:15)
=
org.eclipse.rwt.internal.lifecycle.EntryPointManager.createU I(EntryPointM=
anager.java:92)
=
org.eclipse.rwt.internal.lifecycle.RWTLifeCycle.createUI(RWT LifeCycle.jav=
a:212)
=
org.eclipse.rwt.internal.lifecycle.RWTLifeCycle$UIThreadCont roller.run(RW=
TLifeCycle.java:109)
java.lang.Thread.run(Unknown Source)
</PRE>
<P></P>
<P><B>note</B> <U>The full stack trace of the root cause is available =
in the=20
Apache Tomcat/6.0.14 logs.</U></P>
<HR noShade SIZE=3D1>
<H3>Apache Tomcat/6.0.14</H3></BLOCKQUOTE></BODY></HTML>
------=_NextPart_000_01D9_01C87796.5D62E0A0--
|
|
|
| Re: loader constraint violation on Tomcat [message #75444 is a reply to message #75394] |
Mon, 25 February 2008 13:47 |
| Eclipse User |
|
|
|
Originally posted by: fappel.innoopract.com
This is a multi-part message in MIME format.
------=_NextPart_000_0043_01C877E7.3B53D680
Content-Type: text/plain;
charset="us-ascii"
Content-Transfer-Encoding: 7bit
Hi,
additionally to Simon's comment: as you need servlet packages in the
postStartup-method ensure that they are imported using the Import
Packages Section in the Plug-in Manifest Editor, not the
Required-Plug-in section. Otherwise removing the javax.servlet bundle
will leave you with another problem... See the RAP demo bundle as
example.
Ciao
Frank
_____
Von: Simon Kaegi [mailto:simon_kaegi@ca.ibm.com]
Bereitgestellt: Montag, 25. Februar 2008 16:08
Bereitgestellt in: eclipse.technology.rap
Unterhaltung: loader constraint violation on Tomcat
Betreff: Re: loader constraint violation on Tomcat
Hi Christian,
It looks like you have two copies of the servlet api visible.
When running under the servletbridge you don't need to provide the
javax.servlet bundle since those classes are provided by the app server
-- Tomcat in this case.
Try removing the javax.servlet bundle from your webapp.
HTH
-Simon
"Christian Alfarano" <zerostress@libero.it> wrote in message
news:fpugci$kdi$1@build.eclipse.org...
Hi,
i use my app lauching it from Eclipse+jetty and all works fine. If i
export my app under tomcat i have loader constraint violation exactly
when i execute the following code in the class that extends
WorkbenchAdvisor:
public void postStartup() {
HttpServletRequest request = RWT.getRequest();
String idmedia = request.getParameter( "idmedia" );
if(idmedia!=null) {
....
do something
}
}
I suppose that a class instance of tomcat goes in conflict with one that
my app bundles try to instance...
Attached you can find the server response. how can i workaround this
problem?
Thanks
Christian
_____
HTTP Status 500 -
_____
type Exception report
message
description The server encountered an internal error () that prevented
it from fulfilling this request.
exception
java.lang.RuntimeException: java.lang.LinkageError: loader constraint
violation: loader (instance of
org/eclipse/osgi/internal/baseadaptor/DefaultClassLoader) previously
initiated loading for a different type with name
"javax/servlet/http/HttpServletRequest"
org.eclipse.rwt.internal.lifecycle.RWTLifeCycle.executeUIThr ead(RWTLifeC
ycle.java:263)
org.eclipse.rwt.internal.lifecycle.RWTLifeCycle.execute(RWTL ifeCycle.jav
a:149)
org.eclipse.rwt.internal.service.LifeCycleServiceHandler$1.r un(LifeCycle
ServiceHandler.java:60)
org.eclipse.rwt.internal.service.LifeCycleServiceHandler.int ernalService
(LifeCycleServiceHandler.java:176)
org.eclipse.rwt.internal.service.LifeCycleServiceHandler.acc ess$1(LifeCy
cleServiceHandler.java:168)
org.eclipse.rwt.internal.service.LifeCycleServiceHandler$Lif eCycleServic
eHandlerSync.doService(LifeCycleServiceHandler.java:133)
org.eclipse.rwt.internal.lifecycle.RWTLifeCycleServiceHandle rSync.servic
eInternal(RWTLifeCycleServiceHandlerSync.java:45)
org.eclipse.rwt.internal.lifecycle.RWTLifeCycleServiceHandle rSync.servic
e(RWTLifeCycleServiceHandlerSync.java:34)
org.eclipse.rwt.internal.service.LifeCycleServiceHandler.ser vice(LifeCyc
leServiceHandler.java:140)
org.eclipse.rwt.internal.service.ServiceManager$HandlerDispa tcher.servic
e(ServiceManager.java:100)
org.eclipse.rwt.internal.engine.RWTDelegate.doPost(RWTDelega te.java:61)
org.eclipse.ui.internal.servlet.RequestHandler.service(Reque stHandler.ja
va:52)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.eclipse.equinox.http.servlet.internal.ServletRegistratio n.handleRequ
est(ServletRegistration.java:90)
org.eclipse.equinox.http.servlet.internal.ProxyServlet.proce ssAlias(Prox
yServlet.java:111)
org.eclipse.equinox.http.servlet.internal.ProxyServlet.servi ce(ProxyServ
let.java:59)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.eclipse.equinox.servletbridge.BridgeServlet.service(Brid geServlet.ja
va:115)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
root cause
java.lang.LinkageError: loader constraint violation: loader (instance of
org/eclipse/osgi/internal/baseadaptor/DefaultClassLoader) previously
initiated loading for a different type with name
"javax/servlet/http/HttpServletRequest"
it.mw.frontend.ApplicationWorkbenchAdvisor.postStartup(Appli cationWorkbe
nchAdvisor.java:102)
org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2244)
org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:3
72)
org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:153)
it.mw.frontend.Application.createUI(Application.java:15)
org.eclipse.rwt.internal.lifecycle.EntryPointManager.createU I(EntryPoint
Manager.java:92)
org.eclipse.rwt.internal.lifecycle.RWTLifeCycle.createUI(RWT LifeCycle.ja
va:212)
org.eclipse.rwt.internal.lifecycle.RWTLifeCycle$UIThreadCont roller.run(R
WTLifeCycle.java:109)
java.lang.Thread.run(Unknown Source)
note The full stack trace of the root cause is available in the Apache
Tomcat/6.0.14 logs.
_____
Apache Tomcat/6.0.14
------=_NextPart_000_0043_01C877E7.3B53D680
Content-Type: text/html;
charset="us-ascii"
Content-Transfer-Encoding: quoted-printable
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD><TITLE>Apache Tomcat/6.0.14 - Error report</TITLE>
<META http-equiv=3DContent-Type content=3D"text/html; =
charset=3Dus-ascii">
<META content=3D"MSHTML 6.00.6000.16608" name=3DGENERATOR></HEAD>
<BODY bgColor=3D#ffffff>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D968503618-25022008><FONT=20
size=3D2>Hi,</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D968503618-25022008><FONT=20
size=3D2></FONT></SPAN> </DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D968503618-25022008><FONT =
size=3D2>additionally=20
to Simon's comment: as you need servlet packages in the=20
postStartup-method ensure that they are imported using the Import =
Packages=20
Section in the Plug-in Manifest Editor, not the Required-Plug-in=20
section. Otherwise removing the javax.servlet bundle will leave you =
with=20
another problem... See the RAP demo bundle as =
example.</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D968503618-25022008><FONT=20
size=3D2></FONT></SPAN> </DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D968503618-25022008><FONT=20
size=3D2>Ciao</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D968503618-25022008><FONT=20
size=3D2>Frank</FONT></SPAN></DIV><BR>
<DIV class=3DOutlookMessageHeader lang=3Dde dir=3Dltr align=3Dleft>
<HR tabIndex=3D-1>
<FONT size=3D2><B>Von:</B> Simon Kaegi [mailto:simon_kaegi@ca.ibm.com]=20
<BR><B>Bereitgestellt:</B> Montag, 25. Februar 2008 =
16:08<BR><B>Bereitgestellt=20
in:</B> eclipse.technology.rap<BR><B>Unterhaltung:</B> loader constraint =
violation on Tomcat<BR><B>Betreff:</B> Re: loader constraint violation =
on=20
Tomcat<BR><BR></FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Hi Christian,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>It looks like you have two copies of =
the servlet=20
api visible.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>When running under the servletbridge =
you don't need=20
to provide the javax.servlet bundle since those classes are provided by =
the app=20
server -- Tomcat in this case.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Try removing the javax.servlet bundle =
from your=20
webapp.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>HTH</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>-Simon</FONT></DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV>"Christian Alfarano" <<A=20
href=3D"mailto:zerostress@libero.it">zerostress@libero.it</A>> =
wrote in=20
message <A=20
=
href=3D"news:fpugci$kdi$1@build.eclipse.org">news:fpugci$kdi$1@build.ecli=
pse.org</A>...</DIV>Hi,<BR><BR>i=20
use my app lauching it from Eclipse+jetty and all works fine. If i =
<BR>export=20
my app under tomcat i have loader constraint violation exactly =
<BR>when i=20
execute the following code in the class that extends=20
<BR>WorkbenchAdvisor:<BR><BR>public void postStartup()=20
{<BR><BR> =
HttpServletRequest=20
request =3D=20
RWT.getRequest();<BR> =
String=20
idmedia =3D request.getParameter( "idmedia"=20
);<BR> =
if(idmedia!=3Dnull)=20
{<BR> ....<BR>do=20
something<BR> =20
}<BR>}<BR><BR><BR>I suppose that a class instance of tomcat goes in =
conflict=20
with one that <BR>my app bundles try to instance...<BR>Attached you =
can find=20
the server response. how can i workaround this=20
<BR>problem?<BR>Thanks<BR><BR>Christian<BR>
<P>
<HR>
<P></P>
<STYLE>H1 {
FONT-SIZE: 22px; COLOR: white; FONT-FAMILY: Tahoma,Arial,sans-serif; =
BACKGROUND-COLOR: #525d76
}
H2 {
FONT-SIZE: 16px; COLOR: white; FONT-FAMILY: Tahoma,Arial,sans-serif; =
BACKGROUND-COLOR: #525d76
}
H3 {
FONT-SIZE: 14px; COLOR: white; FONT-FAMILY: Tahoma,Arial,sans-serif; =
BACKGROUND-COLOR: #525d76
}
BODY {
COLOR: black; FONT-FAMILY: Tahoma,Arial,sans-serif; BACKGROUND-COLOR: =
white
}
B {
COLOR: white; FONT-FAMILY: Tahoma,Arial,sans-serif; BACKGROUND-COLOR: =
#525d76
}
P {
FONT-SIZE: 12px; BACKGROUND: white; COLOR: black; FONT-FAMILY: =
Tahoma,Arial,sans-serif
}
A {
COLOR: black
}
A.name {
COLOR: black
}
HR {
COLOR: #525d76
}
</STYLE>
<H1>HTTP Status 500 - </H1>
<HR noShade SIZE=3D1>
<P><B>type</B> Exception report</P>
<P><B>message</B> <U></U></P>
<P><B>description</B> <U>The server encountered an internal error () =
that=20
prevented it from fulfilling this request.</U></P>
<P><B>exception</B> </P><PRE>java.lang.RuntimeException: =
java.lang.LinkageError: loader constraint violation: loader (instance of =
org/eclipse/osgi/internal/baseadaptor/DefaultClassLoader) previously =
initiated loading for a different type with name =
"javax/servlet/http/HttpServletRequest"
=
org.eclipse.rwt.internal.lifecycle.RWTLifeCycle.executeUIThr ead(RWTLifeCy=
cle.java:263)
=
org.eclipse.rwt.internal.lifecycle.RWTLifeCycle.execute(RWTL ifeCycle.java=
:149)
=
org.eclipse.rwt.internal.service.LifeCycleServiceHandler$1.r un(LifeCycleS=
erviceHandler.java:60)
=
org.eclipse.rwt.internal.service.LifeCycleServiceHandler.int ernalService(=
LifeCycleServiceHandler.java:176)
=
org.eclipse.rwt.internal.service.LifeCycleServiceHandler.acc ess$1(LifeCyc=
leServiceHandler.java:168)
=
org.eclipse.rwt.internal.service.LifeCycleServiceHandler$Lif eCycleService=
HandlerSync.doService(LifeCycleServiceHandler.java:133)
=
org.eclipse.rwt.internal.lifecycle.RWTLifeCycleServiceHandle rSync.service=
Internal(RWTLifeCycleServiceHandlerSync.java:45)
=
org.eclipse.rwt.internal.lifecycle.RWTLifeCycleServiceHandle rSync.service=
(RWTLifeCycleServiceHandlerSync.java:34)
=
org.eclipse.rwt.internal.service.LifeCycleServiceHandler.ser vice(LifeCycl=
eServiceHandler.java:140)
=
org.eclipse.rwt.internal.service.ServiceManager$HandlerDispa tcher.service=
(ServiceManager.java:100)
org.eclipse.rwt.internal.engine.RWTDelegate.doPost(RWTDelega te.java:61)
=
org.eclipse.ui.internal.servlet.RequestHandler.service(Reque stHandler.jav=
a:52)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
=
org.eclipse.equinox.http.servlet.internal.ServletRegistratio n.handleReque=
st(ServletRegistration.java:90)
=
org.eclipse.equinox.http.servlet.internal.ProxyServlet.proce ssAlias(Proxy=
Servlet.java:111)
=
org.eclipse.equinox.http.servlet.internal.ProxyServlet.servi ce(ProxyServl=
et.java:59)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
=
org.eclipse.equinox.servletbridge.BridgeServlet.service(Brid geServlet.jav=
a:115)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
</PRE>
<P></P>
<P><B>root cause</B> </P><PRE>java.lang.LinkageError: loader =
constraint violation: loader (instance of =
org/eclipse/osgi/internal/baseadaptor/DefaultClassLoader) previously =
initiated loading for a different type with name =
"javax/servlet/http/HttpServletRequest"
=
it.mw.frontend.ApplicationWorkbenchAdvisor.postStartup(Appli cationWorkben=
chAdvisor.java:102)
org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2244)
=
org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:37=
2)
org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:153)
it.mw.frontend.Application.createUI(Application.java:15)
=
org.eclipse.rwt.internal.lifecycle.EntryPointManager.createU I(EntryPointM=
anager.java:92)
=
org.eclipse.rwt.internal.lifecycle.RWTLifeCycle.createUI(RWT LifeCycle.jav=
a:212)
=
org.eclipse.rwt.internal.lifecycle.RWTLifeCycle$UIThreadCont roller.run(RW=
TLifeCycle.java:109)
java.lang.Thread.run(Unknown Source)
</PRE>
<P></P>
<P><B>note</B> <U>The full stack trace of the root cause is available =
in the=20
Apache Tomcat/6.0.14 logs.</U></P>
<HR noShade SIZE=3D1>
<H3>Apache Tomcat/6.0.14</H3></BLOCKQUOTE></BODY></HTML>
------=_NextPart_000_0043_01C877E7.3B53D680--
|
|
| |
| Re: loader constraint violation on Tomcat [message #75495 is a reply to message #75461] |
Tue, 26 February 2008 02:03 |
| Eclipse User |
|
|
|
Originally posted by: fappel.innoopract.com
Non parlo italiano, ma amo la bella italia...
Don't know if that's understandable :-), but in former days I've been
more frequently in Emilia Romagna. I guess that's where I picked up the
ciao. So where are you from? (Sorry for miss-using the newsgroup for a
little chat, folks)
Ciao
Frank
-----Ursprüngliche Nachricht-----
Von: Christian Alfarano [mailto:zerostress@libero.it]
Bereitgestellt: Montag, 25. Februar 2008 23:23
Bereitgestellt in: eclipse.technology.rap
Unterhaltung: loader constraint violation on Tomcat
Betreff: Re: loader constraint violation on Tomcat
Hi,
thanks Simon and Frank. I've fixed the problem in my app using your
suggestions.
Christian
Frank: the word "Ciao" suggests me something of italian.... I'm
italian!Are you from Italy? Ciao :)
Frank Appel ha scritto:
> Hi,
>
> additionally to Simon's comment: as you need servlet packages in the
> postStartup-method ensure that they are imported using the Import
> Packages Section in the Plug-in Manifest Editor, not the
> Required-Plug-in section. Otherwise removing the javax.servlet bundle
> will leave you with another problem... See the RAP demo bundle as
example.
>
> Ciao
> Frank
>
>
------------------------------------------------------------ ------------
> *Von:* Simon Kaegi [mailto:simon_kaegi@ca.ibm.com]
> *Bereitgestellt:* Montag, 25. Februar 2008 16:08
> *Bereitgestellt in:* eclipse.technology.rap
> *Unterhaltung:* loader constraint violation on Tomcat
> *Betreff:* Re: loader constraint violation on Tomcat
>
> Hi Christian,
> It looks like you have two copies of the servlet api visible.
> When running under the servletbridge you don't need to provide the
> javax.servlet bundle since those classes are provided by the app
server
> -- Tomcat in this case.
> Try removing the javax.servlet bundle from your webapp.
>
> HTH
> -Simon
>
> "Christian Alfarano" <zerostress@libero.it
> <mailto:zerostress@libero.it>> wrote in message
> news:fpugci$kdi$1@build.eclipse.org...
> Hi,
>
> i use my app lauching it from Eclipse+jetty and all works fine. If
i
> export my app under tomcat i have loader constraint violation
exactly
> when i execute the following code in the class that extends
> WorkbenchAdvisor:
>
> public void postStartup() {
>
> HttpServletRequest request = RWT.getRequest();
> String idmedia = request.getParameter( "idmedia" );
> if(idmedia!=null) {
> ....
> do something
> }
> }
>
>
> I suppose that a class instance of tomcat goes in conflict with
one
> that
> my app bundles try to instance...
> Attached you can find the server response. how can i workaround
this
> problem?
> Thanks
>
> Christian
>
>
------------------------------------------------------------ ------------
>
>
> HTTP Status 500 -
>
>
------------------------------------------------------------ ------------
>
> *type* Exception report
>
> *message* __
>
> *description* _The server encountered an internal error () that
> prevented it from fulfilling this request._
>
> *exception*
>
> java.lang.RuntimeException: java.lang.LinkageError: loader
constraint violation: loader (instance of
org/eclipse/osgi/internal/baseadaptor/DefaultClassLoader) previously
initiated loading for a different type with name
"javax/servlet/http/HttpServletRequest"
>
org.eclipse.rwt.internal.lifecycle.RWTLifeCycle.executeUIThr ead(RWTLifeC
ycle.java:263)
>
org.eclipse.rwt.internal.lifecycle.RWTLifeCycle.execute(RWTL ifeCycle.jav
a:149)
>
org.eclipse.rwt.internal.service.LifeCycleServiceHandler$1.r un(LifeCycle
ServiceHandler.java:60)
>
org.eclipse.rwt.internal.service.LifeCycleServiceHandler.int ernalService
(LifeCycleServiceHandler.java:176)
>
org.eclipse.rwt.internal.service.LifeCycleServiceHandler.acc ess$1(LifeCy
cleServiceHandler.java:168)
>
org.eclipse.rwt.internal.service.LifeCycleServiceHandler$Lif eCycleServic
eHandlerSync.doService(LifeCycleServiceHandler.java:133)
>
org.eclipse.rwt.internal.lifecycle.RWTLifeCycleServiceHandle rSync.servic
eInternal(RWTLifeCycleServiceHandlerSync.java:45)
>
org.eclipse.rwt.internal.lifecycle.RWTLifeCycleServiceHandle rSync.servic
e(RWTLifeCycleServiceHandlerSync.java:34)
>
org.eclipse.rwt.internal.service.LifeCycleServiceHandler.ser vice(LifeCyc
leServiceHandler.java:140)
>
org.eclipse.rwt.internal.service.ServiceManager$HandlerDispa tcher.servic
e(ServiceManager.java:100)
>
org.eclipse.rwt.internal.engine.RWTDelegate.doPost(RWTDelega te.java:61)
>
org.eclipse.ui.internal.servlet.RequestHandler.service(Reque stHandler.ja
va:52)
> javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
>
org.eclipse.equinox.http.servlet.internal.ServletRegistratio n.handleRequ
est(ServletRegistration.java:90)
>
org.eclipse.equinox.http.servlet.internal.ProxyServlet.proce ssAlias(Prox
yServlet.java:111)
>
org.eclipse.equinox.http.servlet.internal.ProxyServlet.servi ce(ProxyServ
let.java:59)
> javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
>
org.eclipse.equinox.servletbridge.BridgeServlet.service(Brid geServlet.ja
va:115)
> javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
>
> *root cause*
>
> java.lang.LinkageError: loader constraint violation: loader
(instance of org/eclipse/osgi/internal/baseadaptor/DefaultClassLoader)
previously initiated loading for a different type with name
"javax/servlet/http/HttpServletRequest"
>
it.mw.frontend.ApplicationWorkbenchAdvisor.postStartup(Appli cationWorkbe
nchAdvisor.java:102)
> org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2244)
>
org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:3
72)
>
org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:153)
> it.mw.frontend.Application.createUI(Application.java:15)
>
org.eclipse.rwt.internal.lifecycle.EntryPointManager.createU I(EntryPoint
Manager.java:92)
>
org.eclipse.rwt.internal.lifecycle.RWTLifeCycle.createUI(RWT LifeCycle.ja
va:212)
>
org.eclipse.rwt.internal.lifecycle.RWTLifeCycle$UIThreadCont roller.run(R
WTLifeCycle.java:109)
> java.lang.Thread.run(Unknown Source)
>
> *note* _The full stack trace of the root cause is available in the
> Apache Tomcat/6.0.14 logs._
>
>
------------------------------------------------------------ ------------
>
>
> Apache Tomcat/6.0.14
>
|
|
|
| Re: loader constraint violation on Tomcat [message #75513 is a reply to message #75495] |
Tue, 26 February 2008 04:45 |
| Eclipse User |
|
|
|
Ok, nice to meet you! i'm from Bari (south italy near the sea!) but
currently i'm working in Milan (sw dev on dvb-mhp, web); i'm using rap
for a personal project and i find it very interesting. Have a good job
with RAP dev :)
Ciao
Christian
Frank Appel ha scritto:
> Non parlo italiano, ma amo la bella italia...
>
> Don't know if that's understandable :-), but in former days I've been
> more frequently in Emilia Romagna. I guess that's where I picked up the
> ciao. So where are you from? (Sorry for miss-using the newsgroup for a
> little chat, folks)
>
> Ciao
> Frank
>
> -----Ursprüngliche Nachricht-----
> Von: Christian Alfarano [mailto:zerostress@libero.it]
> Bereitgestellt: Montag, 25. Februar 2008 23:23
> Bereitgestellt in: eclipse.technology.rap
> Unterhaltung: loader constraint violation on Tomcat
> Betreff: Re: loader constraint violation on Tomcat
>
>
> Hi,
> thanks Simon and Frank. I've fixed the problem in my app using your
> suggestions.
> Christian
>
> Frank: the word "Ciao" suggests me something of italian.... I'm
> italian!Are you from Italy? Ciao :)
>
>
> Frank Appel ha scritto:
>> Hi,
>>
>> additionally to Simon's comment: as you need servlet packages in the
>> postStartup-method ensure that they are imported using the Import
>> Packages Section in the Plug-in Manifest Editor, not the
>> Required-Plug-in section. Otherwise removing the javax.servlet bundle
>> will leave you with another problem... See the RAP demo bundle as
> example.
>> Ciao
>> Frank
>>
>>
> ------------------------------------------------------------ ------------
>> *Von:* Simon Kaegi [mailto:simon_kaegi@ca.ibm.com]
>> *Bereitgestellt:* Montag, 25. Februar 2008 16:08
>> *Bereitgestellt in:* eclipse.technology.rap
>> *Unterhaltung:* loader constraint violation on Tomcat
>> *Betreff:* Re: loader constraint violation on Tomcat
>>
>> Hi Christian,
>> It looks like you have two copies of the servlet api visible.
>> When running under the servletbridge you don't need to provide the
>> javax.servlet bundle since those classes are provided by the app
> server
>> -- Tomcat in this case.
>> Try removing the javax.servlet bundle from your webapp.
>>
>> HTH
>> -Simon
>>
>> "Christian Alfarano" <zerostress@libero.it
>> <mailto:zerostress@libero.it>> wrote in message
>> news:fpugci$kdi$1@build.eclipse.org...
>> Hi,
>>
>> i use my app lauching it from Eclipse+jetty and all works fine. If
> i
>> export my app under tomcat i have loader constraint violation
> exactly
>> when i execute the following code in the class that extends
>> WorkbenchAdvisor:
>>
>> public void postStartup() {
>>
>> HttpServletRequest request = RWT.getRequest();
>> String idmedia = request.getParameter( "idmedia" );
>> if(idmedia!=null) {
>> ....
>> do something
>> }
>> }
>>
>>
>> I suppose that a class instance of tomcat goes in conflict with
> one
>> that
>> my app bundles try to instance...
>> Attached you can find the server response. how can i workaround
> this
>> problem?
>> Thanks
>>
>> Christian
>>
>>
> ------------------------------------------------------------ ------------
>>
>> HTTP Status 500 -
>>
>>
> ------------------------------------------------------------ ------------
>> *type* Exception report
>>
>> *message* __
>>
>> *description* _The server encountered an internal error () that
>> prevented it from fulfilling this request._
>>
>> *exception*
>>
>> java.lang.RuntimeException: java.lang.LinkageError: loader
> constraint violation: loader (instance of
> org/eclipse/osgi/internal/baseadaptor/DefaultClassLoader) previously
> initiated loading for a different type with name
> "javax/servlet/http/HttpServletRequest"
> org.eclipse.rwt.internal.lifecycle.RWTLifeCycle.executeUIThr ead(RWTLifeC
> ycle.java:263)
> org.eclipse.rwt.internal.lifecycle.RWTLifeCycle.execute(RWTL ifeCycle.jav
> a:149)
> org.eclipse.rwt.internal.service.LifeCycleServiceHandler$1.r un(LifeCycle
> ServiceHandler.java:60)
> org.eclipse.rwt.internal.service.LifeCycleServiceHandler.int ernalService
> (LifeCycleServiceHandler.java:176)
> org.eclipse.rwt.internal.service.LifeCycleServiceHandler.acc ess$1(LifeCy
> cleServiceHandler.java:168)
> org.eclipse.rwt.internal.service.LifeCycleServiceHandler$Lif eCycleServic
> eHandlerSync.doService(LifeCycleServiceHandler.java:133)
> org.eclipse.rwt.internal.lifecycle.RWTLifeCycleServiceHandle rSync.servic
> eInternal(RWTLifeCycleServiceHandlerSync.java:45)
> org.eclipse.rwt.internal.lifecycle.RWTLifeCycleServiceHandle rSync.servic
> e(RWTLifeCycleServiceHandlerSync.java:34)
> org.eclipse.rwt.internal.service.LifeCycleServiceHandler.ser vice(LifeCyc
> leServiceHandler.java:140)
> org.eclipse.rwt.internal.service.ServiceManager$HandlerDispa tcher.servic
> e(ServiceManager.java:100)
> org.eclipse.rwt.internal.engine.RWTDelegate.doPost(RWTDelega te.java:61)
> org.eclipse.ui.internal.servlet.RequestHandler.service(Reque stHandler.ja
> va:52)
>> javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
>>
> org.eclipse.equinox.http.servlet.internal.ServletRegistratio n.handleRequ
> est(ServletRegistration.java:90)
> org.eclipse.equinox.http.servlet.internal.ProxyServlet.proce ssAlias(Prox
> yServlet.java:111)
> org.eclipse.equinox.http.servlet.internal.ProxyServlet.servi ce(ProxyServ
> let.java:59)
>> javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
>>
> org.eclipse.equinox.servletbridge.BridgeServlet.service(Brid geServlet.ja
> va:115)
>> javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
>>
>> *root cause*
>>
>> java.lang.LinkageError: loader constraint violation: loader
> (instance of org/eclipse/osgi/internal/baseadaptor/DefaultClassLoader)
> previously initiated loading for a different type with name
> "javax/servlet/http/HttpServletRequest"
> it.mw.frontend.ApplicationWorkbenchAdvisor.postStartup(Appli cationWorkbe
> nchAdvisor.java:102)
>> org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2244)
>>
> org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:3
> 72)
> org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:153)
>> it.mw.frontend.Application.createUI(Application.java:15)
>>
> org.eclipse.rwt.internal.lifecycle.EntryPointManager.createU I(EntryPoint
> Manager.java:92)
> org.eclipse.rwt.internal.lifecycle.RWTLifeCycle.createUI(RWT LifeCycle.ja
> va:212)
> org.eclipse.rwt.internal.lifecycle.RWTLifeCycle$UIThreadCont roller.run(R
> WTLifeCycle.java:109)
>> java.lang.Thread.run(Unknown Source)
>>
>> *note* _The full stack trace of the root cause is available in the
>> Apache Tomcat/6.0.14 logs._
>>
>>
> ------------------------------------------------------------ ------------
>>
>> Apache Tomcat/6.0.14
>>
>
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