I try to do this tutorial since several days. I have installed Jetty and launch with java -jar start.jar.
But there is a problem and I can't run on http://localhost:8080/webdemo.
On Gradle https://guides.gradle.org/building-java-web-applications/?_ga=2.70016208.115474122.1530432194-1213495054.1529791313
When we do this command bash gradlew appRun, that's the result:
$ ./gradlew appRun
:prepareInplaceWebAppFolder
:createInplaceWebAppFolder UP-TO-DATE
:compileJava
:processResources UP-TO-DATE
:classes
:prepareInplaceWebAppClasses
:prepareInplaceWebApp
:appRun
12:25:13 INFO Jetty 9.2.15.v20160210 started and listening on port 8080
12:25:13 INFO webdemo runs at:
12:25:13 INFO http://localhost:8080/webdemo
Press any key to stop the server.
> Building 87% > :appRun
But this is my result:
Starting a Gradle Daemon, 1 busy Daemon could not be reused, use --status for details
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.codehaus.groovy.reflection.CachedClass (file:/home/koala/.gradle/caches/modules-2/files-2.1/org.codehaus.groovy/groovy/2.4.11/52a60df8b4cbfe39469171a42ca77a3e4eb4e737/groovy-2.4.11.jar) to method java.lang.Object.finalize()
WARNING: Please consider reporting this to the maintainers of org.codehaus.groovy.reflection.CachedClass
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Exception in thread "main" java.lang.NullPointerException: Cannot invoke method getText() on null object
at org.codehaus.groovy.runtime.NullObject.invokeMethod(NullObject.java:91)
at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.call(PogoMetaClassSite.java:48)
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48)
at org.codehaus.groovy.runtime.callsite.NullCallSite.call(NullCallSite.java:35)
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:113)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:125)
at org.akhikhl.gretty.Runner.initLogback(Runner.groovy:65)
at org.akhikhl.gretty.Runner$initLogback.callStatic(Unknown Source)
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallStatic(CallSiteArray.java:56)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callStatic(AbstractCallSite.java:194)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callStatic(AbstractCallSite.java:206)
at org.akhikhl.gretty.Runner.run(Runner.groovy:115)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite$PogoCachedMethodSiteNoUnwrapNoCoerce.invoke(PogoMetaMethodSite.java:210)
at org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite.call(PogoMetaMethodSite.java:71)
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:113)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:117)
at org.akhikhl.gretty.Runner.main(Runner.groovy:44)
Exception in thread "Thread-23" org.gradle.process.internal.ExecException: Process 'command '/usr/lib/jvm/java-10-oracle/bin/java'' finished with non-zero exit value 1
at org.gradle.process.internal.DefaultExecHandle$ExecResultImpl.assertNormalExitValue(DefaultExecHandle.java:395)
at org.gradle.process.internal.DefaultJavaExecAction.execute(DefaultJavaExecAction.java:37)
at org.gradle.api.internal.file.DefaultFileOperations.javaexec(DefaultFileOperations.java:192)
at org.gradle.api.internal.project.DefaultProject.javaexec(DefaultProject.java:1087)
at org.gradle.api.internal.project.DefaultProject.javaexec(DefaultProject.java:1082)
at org.gradle.api.Project$javaexec$6.call(Unknown Source)
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:113)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:125)
at org.akhikhl.gretty.DefaultLauncher.javaExec(DefaultLauncher.groovy:89)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:384)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1022)
at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.callCurrent(PogoMetaClassSite.java:69)
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:52)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:154)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:166)
at org.akhikhl.gretty.LauncherBase$_launchThread_closure4.doCall(LauncherBase.groovy:256)
at org.akhikhl.gretty.LauncherBase$_launchThread_closure4.doCall(LauncherBase.groovy)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:294)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1022)
at groovy.lang.Closure.call(Closure.java:414)
at groovy.lang.Closure.call(Closure.java:408)
at groovy.lang.Closure.run(Closure.java:495)
at java.base/java.lang.Thread.run(Thread.java:844)
<===========--> 87% EXECUTING [10m 47s]
> :appRun
> IDLE
Many thanks for unblock my problem
