| Summary: | taskdef can't find existing resource in jar file on the first try, but on the second - JarUrlConnection.connect() fails | ||
|---|---|---|---|
| Product: | Ant | Reporter: | René Krell <renda.krell> |
| Component: | Core tasks | Assignee: | Ant Notifications List <notifications> |
| Status: | REOPENED --- | ||
| Severity: | normal | CC: | renda.krell |
| Priority: | P2 | ||
| Version: | 1.9.1 | ||
| Target Milestone: | 1.9.4 | ||
| Hardware: | PC | ||
| OS: | Linux | ||
| Attachments: |
patch for ProjectHelper2
Patch for the ANT_18_BRANCH |
||
OS, where this bug occurs: Linux 2.6.32.12-0.7-default #1 SMP 2010-05-20 11:14:20 +0200 x86_64 x86_64 x86_64 GNU/Linux JRE, which this bug occurs with: - Oracle JRE 6u38, Linux 64 bit - IBM J9 VM (build 2.4, JRE 1.6.0 IBM J9 2.4 Linux amd64-64 jvmxa6460sr7-20091214_49398 (JIT enabled, AOT enabled) Created attachment 29888 [details]
patch for ProjectHelper2
suggested patch based on the information in the bug report
Created attachment 29889 [details]
Patch for the ANT_18_BRANCH
Here is another patch for the Ant 1.8 branch which solves the problem for me. Are you able to apply this? Thanks
I've combined both patches and also fixed some other places that looked suspicious. svn revision 1554684 amended with revision 1554840 Would appreciate a release with this fix, this still occurs in 1.9.3 for me. let's discuss a schedule for the next release on the user list Unfortunately I got the reopen this for the following reason: The most latest suggested patch didn't apply for me, the problem reoccurred. The is necessary to apply this patch for solving it: http://svn.apache.org/viewvc/ant/core/trunk/src/main/org/apache/tools/ant/taskdefs/Antlib.java?r1=1375571&r2=1554684&pathrev=1554840 Thus, using conn.setDefaultUseCaches(false), not just setUseCaches(false), for whatever reason. |
In rare cases, but reproducable on certain testsystems, I get the following stacktrace: com.izforge.izpack.installer.InstallerException: The following error occurred while executing this line: /tmp/buildfile_resource7846034884221422628xml:7: The following error occurred while executing this line: /usr/local/app/bin/database_contents.xml:5: The following error occurred while executing this line: Unable to find jar:file:/usr/local/app/lib/ant/ant-contrib/1.0b3/ant-contrib.jar!/net/sf/antcontrib/antlib.xml at com.izforge.izpack.event.AntActionInstallerListener.performAllActions(Unknown Source) at com.izforge.izpack.event.AntActionInstallerListener.afterPacks(Unknown Source) at com.izforge.izpack.installer.UnpackerBase.informListeners(Unknown Source) at com.izforge.izpack.installer.Unpacker.run(Unknown Source) at java.lang.Thread.run(Thread.java:736) Caused by: The following error occurred while executing this line: /tmp/buildfile_resource7846034884221422628xml:7: The following error occurred while executing this line: /usr/local/app/bin/database_contents.xml:5: The following error occurred while executing this line: Unable to find jar:file:/usr/local/app/lib/ant/ant-contrib/1.0b3/ant-contrib.jar!/net/sf/antcontrib/antlib.xml at org.apache.tools.ant.ProjectHelper.addLocationToBuildException(ProjectHelper.java:551) at org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:395) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:48) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37) at java.lang.reflect.Method.invoke(Method.java:600) 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:392) at org.apache.tools.ant.Target.performTasks(Target.java:413) at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1399) at org.apache.tools.ant.Project.executeTarget(Project.java:1368) at com.izforge.izpack.event.AntAction.performAction(Unknown Source) at com.izforge.izpack.event.AntAction.performInstallAction(Unknown Source) ... 5 more Caused by: /tmp/buildfile_resource7846034884221422628xml:7: The following error occurred while executing this line: /usr/local/app/bin/database_contents.xml:5: The following error occurred while executing this line: Unable to find jar:file:/usr/local/app/lib/ant/ant-contrib/1.0b3/ant-contrib.jar!/net/sf/antcontrib/antlib.xml at org.apache.tools.ant.ProjectHelper.addLocationToBuildException(ProjectHelper.java:551) at org.apache.tools.ant.taskdefs.ImportTask.importResource(ImportTask.java:238) at org.apache.tools.ant.taskdefs.ImportTask.execute(ImportTask.java:163) at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:48) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37) at java.lang.reflect.Method.invoke(Method.java:600) 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:392) at org.apache.tools.ant.helper.ProjectHelper2.parse(ProjectHelper2.java:180) at org.apache.tools.ant.ProjectHelper.configureProject(ProjectHelper.java:82) at org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:393) ... 17 more Caused by: /usr/local/app/bin/database_contents.xml:5: The following error occurred while executing this line: Unable to find jar:file:/usr/local/app/lib/ant/ant-contrib/1.0b3/ant-contrib.jar!/net/sf/antcontrib/antlib.xml at org.apache.tools.ant.ProjectHelper.addLocationToBuildException(ProjectHelper.java:551) at org.apache.tools.ant.taskdefs.Definer.loadAntlib(Definer.java:445) at org.apache.tools.ant.taskdefs.Definer.execute(Definer.java:292) at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:48) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37) at java.lang.reflect.Method.invoke(Method.java:600) 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:392) at org.apache.tools.ant.helper.ProjectHelper2.parse(ProjectHelper2.java:169) at org.apache.tools.ant.taskdefs.ImportTask.importResource(ImportTask.java:229) ... 29 more Caused by: Unable to find jar:file:/usr/local/app/lib/ant/ant-contrib/1.0b3/ant-contrib.jar!/net/sf/antcontrib/antlib.xml at org.apache.tools.ant.taskdefs.Antlib.createAntlib(Antlib.java:68) at org.apache.tools.ant.taskdefs.Definer.loadAntlib(Definer.java:440) ... 40 more Caused by: java.io.FileNotFoundException: JAR entry net/sf/antcontrib/antlib.xml not found in /usr/local/app/lib/ant/ant-contrib/1.0b3/ant-contrib.jar at sun.net.www.protocol.jar.JarURLConnection.connect(JarURLConnection.java:125) at org.apache.tools.ant.taskdefs.Antlib.createAntlib(Antlib.java:66) ... 41 more in the definition: <taskdef resource="net/sf/antcontrib/antlib.xml"> <classpath> <pathelement location="${install.prefix}/lib/ant/ant-contrib/1.0b3/ant-contrib.jar"/> </classpath> </taskdef> The File and the resource in it definitely exist. Ant 1.8.4 is used built-in here from an Izpack installer, but this doesn't play any role here, IMHO. The important point is, that it fails just on the first try, but on the second on it suceeds, although there hasn't been changed anything on the appropriate location in between time. Note: At the links - https://jira.springsource.org/browse/SPR-4639 - http://stackoverflow.com/questions/1374438/disappearing-jar-entry-when-loading-using-spi I found some discussion about switching off caching in such cases for UrlConnection. Maybe this could be useful also for Ant.