在使用java.security.AccessControlException蚂蚁，但运行正常，从控

我有以下的Ant <的java>任务：

<property name="classpath-run.msg" refid="run.classpath"/>
<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>

当我运行Ant的执行任务失败（见下文跟踪）。当我复制粘贴的呼应类路径，并用java -classpath ..执行成功运行在命令行中我的代码！

在这两种情况下是用java的版本相同。

这怎么可能，我观察到不同的行为？一个java.security.AccessControlException坐在堆栈跟踪的根，但我已经给予我的Ant的java任务中的所有安全权限，包括明确的MBeanTrustPermission为此也出现在堆栈跟踪的动作登记。

跟踪（当蚂蚁下运行）如下发现：

 [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

Answer 1:

我有一个类似的问题。令人惊讶的对我来说是fork="yes"在java任务的工作就像一个魅力。我没有改变任何安全策略。

我想试试这个：

<java fork="yes" classname ="${project.MainClass.name}">
    <classpath refid="run.classpath"/>
</java>

Answer 2:

我曾试图用蚂蚁注册MBean时，同样的问题，而解决办法是添加%JAVA_HOME%\jre\lib\security\java.policy以下行：

许可javax.management.MBeanTrustPermission“寄存器”;

参考：消息从蚂蚁用户

Answer 3:

显然，蚂蚁安装了SecurityManager运行您的程序和你的JAAS安全的配置方式时，该代码没有必要的权限才能正常运行。

默认情况下，没有SecurityManager被安装，因此当在命令行直接执行你的代码运行正常。

您可以咨询为Java任务文档，然后在“权限”的样子。