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我得到以下異常跟蹤的運行ant package的結果（這是應該建立一個JBoss .ear包）：調試螞蟻UnsupportedClassVersionError
$ ant package
Buildfile: /usr/local/src/appname/build.xml
init:
[echo] Classpath = ${java.classpath}
build:
package:
BUILD FAILED
/usr/local/src/appname/build.xml:369: java.lang.UnsupportedClassVersionError: Bad version number in .class file
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
at org.apache.tools.ant.util.depend.bcel.AncestorAnalyzer.<init>(AncestorAnalyzer.java:45)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:501)
at java.lang.Class.newInstance0(Class.java:350)
at java.lang.Class.newInstance(Class.java:303)
at org.apache.tools.ant.taskdefs.optional.ejb.GenericDeploymentTool.createAnalyzer(GenericDeploymentTool.java:281)
at org.apache.tools.ant.taskdefs.optional.ejb.GenericDeploymentTool.configure(GenericDeploymentTool.java:308)
at org.apache.tools.ant.taskdefs.optional.ejb.EjbJar.execute(EjbJar.java:582)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:592)
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:390)
at org.apache.tools.ant.Target.performTasks(Target.java:411)
at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1360)
at org.apache.tools.ant.Project.executeTarget(Project.java:1329)
at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
at org.apache.tools.ant.Project.executeTargets(Project.java:1212)
at org.apache.tools.ant.Main.runBuild(Main.java:801)
at org.apache.tools.ant.Main.startAnt(Main.java:218)
at org.apache.tools.ant.launch.Launcher.run(Launcher.java:280)
at org.apache.tools.ant.launch.Launcher.main(Launcher.java:109)
Total time: 0 seconds
有沒有辦法找出這正是它發生此異常時試圖加載的類文件？
我試過用ant -v和ant -debug來運行，但是這並沒有增加任何關於該問題的有價值的信息。
人們可以看到，ant build完成W/O錯誤（也ant clean作品。）
我明白的東西在我的設置打破，但明知有問題的類文件的名稱將是很大的幫助，以固定建立。
螞蟻和Java/javac的版本：
$ ant -version
Apache Ant version 1.8.0 compiled on March 11 2010
$ java -version
java version "1.5.0_22"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_22-b03)
Java HotSpot(TM) 64-Bit Server VM (build 1.5.0_22-b03, mixed mode)
$ javac -version
javac 1.5.0_22
OS版本：
$ lsb_release -a
No LSB modules are available.
Distributor ID: Debian
Description: Debian GNU/Linux 6.0.2 (squeeze)
Release: 6.0.2
Codename: squeeze
的JBoss安裝到/opt/jboss-4.2.3.GA。
任何指針？