我们已将JBoss从4.3更新到7.3，将Java从1.6更新到1.8。我们的项目中特别有一个模块无法编译。有人可以指出我在哪里寻找解决这个问题吗？
这是堆栈跟踪：
java.lang.IllegalStateException: No Java compiler available
at org.apache.jasper.JspCompilationContext.cTrace
org.apache.jasper.JasperException: java.lang.IllegalStateException: No Java compiler available
at org.apache.jasper.JspC.processFile(JspC.java:1040)
at org.apache.jasper.JspC.execute(JspC.java:1156)
at org.codehaus.mojo.jspc.compiler.tomcat6.JreateCompiler(JspCompilationContext.java:229)
at org.apache.jasper.JspC.processFile(JspC.java:996)
at org.apache.jasper.JspCspCompilerImpl.compile(JspCompilerImpl.java:111)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Delega.execute(JspC.java:1156)
at org.codehaus.mojo.jspc.compiler.tomcat6.JspCompilerImpl.compile(JspCompilerImpl.java:111)
at suntingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.groovy.reflection.Cached.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImMethod.invoke(CachedMethod.java:86)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:230)
at groovy.lang.MetaClassImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Mepl.invokeMethod(MetaClassImpl.java:912)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:756)
at org.codehaus.grthod.invoke(Method.java:498)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:86)
at groovy.lang.Metaoovy.runtime.InvokerHelper.invokePojoMethod(InvokerHelper.java:766)
at org.codehaus.groovy.runtime.InvokerHelper.invokeMethod(Method.doMethodInvoke(MetaMethod.java:230)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:912)
at groovy.lang.InvokerHelper.java:754)
at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodN(ScriptBytecodeAdapter.java:170)
aMetaClassImpl.invokeMethod(MetaClassImpl.java:756)
at org.codehaus.groovy.runtime.InvokerHelper.invokePojoMethod(InvokerHelpert org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethod0(ScriptBytecodeAdapter.java:198)
at org.codehaus.mojo.jspc.Co.java:766)
at org.codehaus.groovy.runtime.InvokerHelper.invokeMethod(InvokerHelper.java:754)
at org.codehaus.groovy.runtime.mpilationMojoSupport.execute(CompilationMojoSupport.groovy:333)
at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DeScriptBytecodeAdapter.invokeMethodN(ScriptBytecodeAdapter.java:170)
at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokfaultPluginManager.java:490)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.javaeMethod0(ScriptBytecodeAdapter.java:198)
at org.codehaus.mojo.jspc.CompilationMojoSupport.execute(CompilationMojoSupport.groov:694)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:556)
at y:333)
at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:490)
at org.apache.maven.lifecyorg.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:535)
at org.apache.maven.lifecyccle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:694)
at org.apache.maven.lifecycle.DefaultLifecycleExele.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:387)
at org.apache.maven.lifecycle.Defacutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:556)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execuultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:348)
at org.apache.maven.lifecycle.DefaultLifecycleExecteGoal(DefaultLifecycleExecutor.java:535)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(utor.execute(DefaultLifecycleExecutor.java:180)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:328)
at org.apaDefaultLifecycleExecutor.java:387)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleche.maven.DefaultMaven.execute(DefaultMaven.java:138)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:362)
at org.apacheExecutor.java:348)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:180)
at org..maven.cli.compat.CompatibleMain.main(CompatibleMain.java:60)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
apache.maven.DefaultMaven.doExecute(DefaultMaven.java:328)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:138)
a at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.t org.apache.maven.cli.MavenCli.main(MavenCli.java:362)
at org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.javainvoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.classworlds:60)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.la.Launcher.launchEnhanced(Launcher.java:315)
at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
at org.codehaus.cng.reflect.Method.invoke(Method.java:498)
at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
at org.codelassworlds.Launcher.mainWithExitCode(Launcher.java:430)
at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
Caused bhaus.classworlds.Launcher.launch(Launcher.java:255)
at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
y: java.lang.IllegalStateException: No Java compiler available
at org.apache.jasper.JspCompilationContext.createCompiler(JspCo at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
mpilationContext.java:229)
at org.apache.jasper.JspC.processFile(JspC.java:996)
... 34 more
我不知道jasper模块是否有问题，或者它是否根本找不到SLF4J（我们确实从项目中删除了SLF4J）。也许 jasper 模块调用了SLF4J代码并且它不再存在了？
为什么它说没有可用的Java编译器？