Is there any way to force Scala interpreter (started through SBT) to print complete stack trace. By default, less than 10 lines are displayed:
scala> new CacheMonitoringClient
javax.management.InstanceNotFoundException: com.bea:Name=DomainRuntimeService,Type=weblogic.management.beanservers.domainrun
time.DomainRuntimeServiceMBean
at weblogic.rjvm.ResponseImpl.unmarshalReturn(ResponseImpl.java:195)
at weblogic.rmi.internal.BasicRemoteRef.invoke(BasicRemoteRef.java:224)
at javax.management.remote.rmi.RMIConnectionImpl_921_WLStub.getAttribute(Unknown Source)
at weblogic.management.remote.common.RMIConnectionWrapper$11.run(ClientProviderBase.java:498)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:363)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:147)
at weblogic.security.Security.runAs(Security.java:61)
at weblogic.management.remote.common.RMIConnectionWrapper.getAttribute(ClientProviderBas...
As a workaround I'm using try { new CacheMonitoringClient } catch { case ex => ex.printStackTrace} (explicitly wrapping the calls that throw the exceptions I'm interested in), but that really ugly...
Use lastException if you want just one thing:
scala> 1 / 0
java.lang.ArithmeticException: / by zero
at .<init>(<console>:12)
at .<clinit>(<console>)
at RequestResult$.<init>(<console>:9)
at RequestResult$.<clinit>(<console>)
at RequestResult$scala_repl_result(<console>)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at scala.tools.nsc.Interpreter$Request$$anonfun$loadAndRun$1$$anonfun$apply$18.apply(Interpreter.scala:981)
at scala.tools.nsc.Interpreter$Request$$anonfun$loadAndRun$1$$anonfun$apply$18.apply(Interpreter.scala:981)
at scala.util.control.Exception$Catch.apply(Exception.scala:79)
at scal...
scala> lastException.printStackTrace
java.lang.ArithmeticException: / by zero
at line101$object$$iw$$iw$$iw$$iw$$iw$$iw$.<init>(<console>:12)
at line101$object$$iw$$iw$$iw$$iw$$iw$$iw$.<clinit>(<console>)
at RequestResult$line101$object$.<init>(<console>:9)
at RequestResult$line101$object$.<clinit>(<console>)
at RequestResult$line101$object.scala_repl_result(<console>)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at scala.tools.nsc.Interpreter$Request$$anonfun$loadAndRun$1$$anonfun$apply$18.apply(Interpreter.scala:981)
at scala.tools.nsc.Interpreter$Request$$anonfun$loadAndRun$1$$anonfun$apply$18.apply(Interpreter.scala:981)
at scala.util.control.Exception$Catch.apply(Exception.scala:79)
at scala.tools.nsc.Interpreter$Request$$anonfun$loadAndRun$1.apply(Interpreter.scala:980)
at scala.tools.nsc.Interpreter$Request$$anonfun$loadAndRun$1.apply(Interpreter.scala:980)
at scala.util.control.Exception$Catch.apply(Exception.scala:79)
at scala.tools.nsc.Interpreter$Request.loadAndRun(Interpreter.scala:979)
at scala.tools.nsc.Interpreter.loadAndRunReq$1(Interpreter.scala:578)
at scala.tools.nsc.Interpreter.interpret(Interpreter.scala:597)
at scala.tools.nsc.Interpreter.interpret(Interpreter.scala:575)
at scala.tools.nsc.InterpreterLoop.reallyInterpret$1(InterpreterLoop.scala:471)
at scala.tools.nsc.InterpreterLoop.interpretStartingWith(InterpreterLoop.scala:514)
at scala.tools.nsc.InterpreterLoop.command(InterpreterLoop.scala:361)
at scala.tools.nsc.InterpreterLoop.processLine$1(InterpreterLoop.scala:242)
at scala.tools.nsc.InterpreterLoop.repl(InterpreterLoop.scala:248)
at scala.tools.nsc.InterpreterLoop.main(InterpreterLoop.scala:558)
at scala.tools.nsc.MainGenericRunner$.main(MainGenericRunner.scala:72)
at scala.tools.nsc.MainGenericRunner.main(MainGenericRunner.scala)
Or set settings.maxPrintString to 0, though that will change how normal results are printed too.
scala> settings.maxPrintString = 0
scala> 1 /0
java.lang.ArithmeticException: / by zero
at .<init>(<console>:12)
at .<clinit>(<console>)
at RequestResult$.<init>(<console>:9)
at RequestResult$.<clinit>(<console>)
at RequestResult$scala_repl_result(<console>)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at scala.tools.nsc.Interpreter$Request$$anonfun$loadAndRun$1$$anonfun$apply$18.apply(Interpreter.scala:981)
at scala.tools.nsc.Interpreter$Request$$anonfun$loadAndRun$1$$anonfun$apply$18.apply(Interpreter.scala:981)
at scala.util.control.Exception$Catch.apply(Exception.scala:79)
at scala.tools.nsc.Interpreter$Request$$anonfun$loadAndRun$1.apply(Interpreter.scala:980)
at scala.tools.nsc.Interpreter$Request$$anonfun$loadAndRun$1.apply(Interpreter.scala:980)
at scala.util.control.Exception$Catch.apply(Exception.scala:79)
at scala.tools.nsc.Interpreter$Request.loadAndRun(Interpreter.scala:979)
at scala.tools.nsc.Interpreter.loadAndRunReq$1(Interpreter.scala:578)
at scala.tools.nsc.Interpreter.interpret(Interpreter.scala:597)
at scala.tools.nsc.Interpreter.interpret(Interpreter.scala:575)
at scala.tools.nsc.InterpreterLoop.reallyInterpret$1(InterpreterLoop.scala:471)
at scala.tools.nsc.InterpreterLoop.interpretStartingWith(InterpreterLoop.scala:514)
at scala.tools.nsc.InterpreterLoop.command(InterpreterLoop.scala:361)
at scala.tools.nsc.InterpreterLoop.processLine$1(InterpreterLoop.scala:242)
at scala.tools.nsc.InterpreterLoop.repl(InterpreterLoop.scala:248)
at scala.tools.nsc.InterpreterLoop.main(InterpreterLoop.scala:558)
at scala.tools.nsc.MainGenericRunner$.main(MainGenericRunner.scala:72)
at scala.tools.nsc.MainGenericRunner.main(MainGenericRunner.scala)
Have you tried
trace on
in SBT before entering the console? On is the default, but perhaps it is being overwritten in your case.
来源：https://stackoverflow.com/questions/3767808/how-to-force-interpreter-show-complete-stack-trace