I have the following *Ant < java >* task:
<echo message="running the app with classpath = ${classpath-run.msg}"/>
<echo message="Java version used (ant.java.version): ${ant.java.version}"/>
<echo message="Java version used ( java.version): ${java.version}"/>
<java classname ="${project.MainClass.name}">
<permissions>
<grant class="java.security.AllPermission"/>
<grant class="javax.management.MBeanTrustPermission"
action="register"/>
</permissions>
<classpath refid="run.classpath"/>
</java>
When I run *Ant* the execution of the **task fails (see trace below my
signature). When I copy-paste the echoed classpath and run my code from the
command line with *java -classpath ..* the execution succeeds! I was
advised that apparently I had to add some permissions to the Ant <java>
task and so I have as you can see above, but the problem persists.
In both cases the same version of *java* is used.
I have the book "Ant in Action" (Manning Press) but there's no mention
about any Security Managers with Ant. So my questions are:
[1] Why should Ant's <java> task even bother with permissions and Security
Managers? It is a long-established convention that running Java from the
command line never sets any Security Managers.
[2] How can I disable Ant's Security Manager or grant permissions that
would ensure my Ant <java> runs are the same as executing the code from the
command line ?
Menelaos.
[java] java.lang.ExceptionInInitializerError
[java] at
org.apache.tools.ant.taskdefs.ExecuteJava.execute(ExecuteJava.java:194)
[java] at org.apache.tools.ant.taskdefs.Java.run(Java.java:771)
[java] at org.apache.tools.ant.taskdefs.Java.executeJava(Java.java:221)
[java] at org.apache.tools.ant.taskdefs.Java.executeJava(Java.java:135)
[java] at org.apache.tools.ant.taskdefs.Java.execute(Java.java:108)
[java] at
org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
[java] at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
[java] at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[java] at java.lang.reflect.Method.invoke(Method.java:601)
[java] at
org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
[java] at org.apache.tools.ant.Task.perform(Task.java:348)
[java] at
org.apache.tools.ant.taskdefs.Sequential.execute(Sequential.java:68)
[java] at
org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
[java] at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
[java] at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[java] at java.lang.reflect.Method.invoke(Method.java:601)
[java] at
org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
[java] at org.apache.tools.ant.Task.perform(Task.java:348)
[java] at
org.apache.tools.ant.taskdefs.MacroInstance.execute(MacroInstance.java:398)
[java] at
org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
[java] at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
[java] at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[java] at java.lang.reflect.Method.invoke(Method.java:601)
[java] at
org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
[java] at org.apache.tools.ant.Task.perform(Task.java:348)
[java] at org.apache.tools.ant.Target.execute(Target.java:390)
[java] at org.apache.tools.ant.Target.performTasks(Target.java:411)
[java] at
org.apache.tools.ant.Project.executeSortedTargets(Project.java:1399)
[java] at org.apache.tools.ant.Project.executeTarget(Project.java:1368)
[java] at
org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
[java] at org.apache.tools.ant.Project.executeTargets(Project.java:1251)
[java] at org.apache.tools.ant.Main.runBuild(Main.java:809)
[java] at org.apache.tools.ant.Main.startAnt(Main.java:217)
[java] at org.apache.tools.ant.launch.Launcher.run(Launcher.java:280)
[java] at org.apache.tools.ant.launch.Launcher.main(Launcher.java:109)
[java] Caused by: java.lang.ExceptionInInitializerError
[java] at TranslationClient.main(TranslationClient.java:5)
[java] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[java] at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
[java] at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[java] at java.lang.reflect.Method.invoke(Method.java:601)
[java] at
org.apache.tools.ant.taskdefs.ExecuteJava.run(ExecuteJava.java:217)
[java] at
org.apache.tools.ant.taskdefs.ExecuteJava.execute(ExecuteJava.java:152)
[java] ... 34 more
[java] Caused by: net.sf.ehcache.CacheException:
java.security.AccessControlException: access denied
("javax.management.MBeanTrustPermission" "register")
[java] at
net.sf.ehcache.management.sampled.SampledMBeanRegistrationProvider.initialize(SampledMBeanRegistrationProvider.java:98)
[java] at
net.sf.ehcache.management.provider.MBeanRegistrationProviderImpl.initialize(MBeanRegistrationProviderImpl.java:63)
[java] at net.sf.ehcache.CacheManager.doInit(CacheManager.java:454)
[java] at net.sf.ehcache.CacheManager.init(CacheManager.java:374)
[java] at net.sf.ehcache.CacheManager.<init>(CacheManager.java:356)
[java] at TranslationCache.<clinit>(TranslationCache.java:10)
[java] ... 41 more
[java] Caused by: java.security.AccessControlException: access denied
("javax.management.MBeanTrustPermission" "register")
[java] at
java.security.AccessControlContext.checkPermission(AccessControlContext.java:366)
[java] at
java.lang.SecurityManager.checkPermission(SecurityManager.java:585)
[java] at
com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.checkMBeanTrustPermission(DefaultMBeanServerInterceptor.java:1848)
[java] at
com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:322)
[java] at
com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:512)
[java] at
net.sf.ehcache.management.sampled.SampledMBeanRegistrationProvider.registerCacheManagerMBean(SampledMBeanRegistrationProvider.java:118)
[java] at
net.sf.ehcache.management.sampled.SampledMBeanRegistrationProvider.initialize(SampledMBeanRegistrationProvider.java:95)
[java] ... 46 more
