I am getting a "Module cannot be instantiated error in a RateLimiter" in a newly created play project.
First I thought since it is a new project maybe some configuration is missing, so I checked build.sbt, plugins.sbt but they were fine.
I am not able to figure out what this error is regarding.
I am pasting entire stacktrace for you reference:
! #7gf2jmfmi - Internal server error, for (POST) [/testCreateUpdateCandidate] ->
play.api.PlayException: Cannot load module[Module [ratelimit.TasksModule] cannot be instantiated.]
at play.api.inject.Modules$.play$api$inject$Modules$$constructModule(Module.scala:147)
at play.api.inject.Modules$$anonfun$locate$1.apply(Module.scala:114)
at play.api.inject.Modules$$anonfun$locate$1.apply(Module.scala:113)
at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
at scala.collection.immutable.HashSet$HashSet1.foreach(HashSet.scala:316)
at scala.collection.immutable.HashSet$HashTrieSet.foreach(HashSet.scala:972)
at scala.collection.TraversableLike$class.map(TraversableLike.scala:234)
at scala.collection.AbstractSet.scala$collection$SetLike$$super$map(Set.scala:47)
at scala.collection.SetLike$class.map(SetLike.scala:92)
Caused by: java.lang.ClassNotFoundException: ratelimit.TasksModule
at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
at play.api.inject.Modules$$anonfun$locate$1$$anonfun$apply$1.apply(Module.scala:115)
at play.api.inject.Modules$$anonfun$locate$1$$anonfun$apply$1.apply(Module.scala:115)
at play.api.inject.Modules$.play$api$inject$Modules$$constructModule(Module.scala:121)
at play.api.inject.Modules$$anonfun$locate$1.apply(Module.scala:114)
at play.api.inject.Modules$$anonfun$locate$1.apply(Module.scala:113)
at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
Related
I am new to Java and trying around. Now I would like to learn about network - server client communications. Long story short I found jars on github which should make the start easier. So I downloaded the file and added it to my Modulepath. Everything looked OK while writing a simple start to just connect but when I want to run for testing I get the NoClassDefFoundError ...
Exception in thread "main" java.lang.NoClassDefFoundError: com/blogspot/debukkitsblog/net/Server
at java.base/java.lang.ClassLoader.defineClass1(Native Method)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1010)
at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:150)
at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:855)
at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:753)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:676)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:634)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:182)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:519)
at fst.serverclient.ssc.SSCNetzwerkTester.main(SSCNetzwerkTester.java:6)
Caused by: java.lang.ClassNotFoundException: com.blogspot.debukkitsblog.net.Server
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:636)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:182)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:519)
... 10 more
I do not have any idea what am I doing wrong, the jar should work otherwise it should not be there for download I guess. But the error comes from one of the jar classes called Server:
java.lang.NoClassDefFoundError: com/blogspot/debukkitsblog/net/Server
I am working on a multi-sbt project, which has projects like invoices-and-orders, order-dtos.
We use internally made libraries in our organization.
The error appears at runtime after I hit any resource, I have researched a bit on how classLoader, etc work in loading classes at runtime in java, but I don't understand the root cause of this issue.
I would be thankful if someone could provide insights on this issue.
Full Stack Trace is as follows
play.api.UnexpectedException: Unexpected exception[NoClassDefFoundError: order/dtos/internal/DPQSRepresentations$DPQSStrategy]
at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1$$anonfun$1.apply(DevServerStart.scala:184)
at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1$$anonfun$1.apply(DevServerStart.scala:131)
at scala.Option.map(Option.scala:146)
at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1.apply(DevServerStart.scala:131)
at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1.apply(DevServerStart.scala:129)
at scala.util.Success.flatMap(Try.scala:231)
at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1.apply(DevServerStart.scala:129)
at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1.apply(DevServerStart.scala:121)
at scala.concurrent.impl.Future$PromiseCompletingRunnable.liftedTree1$1(Future.scala:24)
at scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:24)
Caused by: java.lang.NoClassDefFoundError: order/dtos/internal/DPQSRepresentations$DPQSStrategy
at java.base/java.lang.Class.getDeclaredConstructors0(Native Method)
at java.base/java.lang.Class.privateGetDeclaredConstructors(Class.java:3137)
at java.base/java.lang.Class.getDeclaredConstructors(Class.java:2357)
at com.google.inject.spi.InjectionPoint.forConstructorOf(InjectionPoint.java:245)
at com.google.inject.internal.ConstructorBindingImpl.create(ConstructorBindingImpl.java:115)
at com.google.inject.internal.InjectorImpl.createUninitializedBinding(InjectorImpl.java:706)
at com.google.inject.internal.InjectorImpl.createJustInTimeBinding(InjectorImpl.java:929)
at com.google.inject.internal.InjectorImpl.createJustInTimeBindingRecursive(InjectorImpl.java:852)
at com.google.inject.internal.InjectorImpl.getJustInTimeBinding(InjectorImpl.java:291)
at com.google.inject.internal.InjectorImpl.getBindingOrThrow(InjectorImpl.java:222)
Caused by: java.lang.ClassNotFoundException: order.dtos.internal.DPQSRepresentations$DPQSStrategy
at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:471)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:588)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
at java.base/java.lang.Class.getDeclaredConstructors0(Native Method)
at java.base/java.lang.Class.privateGetDeclaredConstructors(Class.java:3137)
at java.base/java.lang.Class.getDeclaredConstructors(Class.java:2357)
at com.google.inject.spi.InjectionPoint.forConstructorOf(InjectionPoint.java:245)
at com.google.inject.internal.ConstructorBindingImpl.create(ConstructorBindingImpl.java:115)
at com.google.inject.internal.InjectorImpl.createUninitializedBinding(InjectorImpl.java:706)
at com.google.inject.internal.InjectorImpl.createJustInTimeBinding(InjectorImpl.java:929)
order/dtos/internal/DPQSRepresentations is the class object in order-dtos project
I am using custom app loader.
play.application.loader="AppLoader"
I am getting java.lang.ClassNotFoundException: AppLoader error in my play application. The application was working fine earlier.
Stacktrace
! #78am4d92i - Internal server error, for (GET) [/] ->
play.api.PlayException: Cannot load play.application.loader[play.application.loader [AppLoader] was not loaded.]
at play.utils.Reflect$.loadClass$1(Reflect.scala:111)
at play.utils.Reflect$.configuredClass(Reflect.scala:124)
at play.api.ApplicationLoader$.apply(ApplicationLoader.scala:73)
at play.core.server.DevServerStart$$anon$1.$anonfun$reload$3(DevServerStart.scala:173)
at play.utils.Threads$.withContextClassLoader(Threads.scala:21)
at play.core.server.DevServerStart$$anon$1.reload(DevServerStart.scala:171)
at play.core.server.DevServerStart$$anon$1.get(DevServerStart.scala:124)
at play.core.server.AkkaHttpServer.handleRequest(AkkaHttpServer.scala:189)
at play.core.server.AkkaHttpServer.$anonfun$createServerBinding$1(AkkaHttpServer.scala:106)
at akka.stream.impl.fusing.MapAsync$$anon$25.onPush(Ops.scala:1194)
Caused by: java.lang.ClassNotFoundException: AppLoader
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at play.utils.Reflect$.loadClass$1(Reflect.scala:105)
at play.utils.Reflect$.configuredClass(Reflect.scala:124)
at play.api.ApplicationLoader$.apply(ApplicationLoader.scala:73)
at play.core.server.DevServerStart$$anon$1.$anonfun$reload$3(DevServerStart.scala:173)
at play.utils.Threads$.withContextClassLoader(Threads.scala:21)
at play.core.server.DevServerStart$$anon$1.reload(DevServerStart.scala:171)
at play.core.server.DevServerStart$$anon$1.get(DevServerStart.scala:124)
[error] application -
My issue was I was not referencing the class correctly. My previous code referenced the class in application.conf as play.application.loader="AppLoader". Later I moved AppLoader in a package app but I forgot to change the entry in application.conf. I had to change it to play.application.loader="app.AppLoader"
I have written a SOLR(4.10.3) plugin using netbeans. I have created jar by building the project.
My class name is SolrPostFilter (SolrPostFilter.jar file)
This is the complete path of this jar ~/solr-4.10/plugin/lib. plugin jar file lies in lib directory.
I have registered my plugin like this in solrconfig.xml
<queryParser name="ModuloPostFilter" class="SolrPostFilter"/>
Is this path correct ?
When I reload core, following error appears
org.apache.solr.common.SolrException: Error handling 'reload' action
at org.apache.solr.handler.admin.CoreAdminHandler.handleReloadAction(CoreAdminHandler.java:737)
at org.apache.solr.handler.admin.CoreAdminHandler.handleRequestInternal(CoreAdminHandler.java:225)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.solr.common.SolrException: Unable to reload core [collection1]
at org.apache.solr.core.CoreContainer.reload(CoreContainer.java:591)
at org.apache.solr.handler.admin.CoreAdminHandler.handleReloadAction(CoreAdminHandler.java:735)
... 31 more
Caused by: org.apache.solr.common.SolrException: Error loading class 'SolrPostFilter'
at org.apache.solr.core.SolrCore.<init>(SolrCore.java:881)
at org.apache.solr.core.SolrCore.reload(SolrCore.java:437)
Caused by: org.apache.solr.common.SolrException: Error loading class 'SolrPostFilter'
at org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:490)
at org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:421)
Caused by: java.lang.ClassNotFoundException: SolrPostFilter
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
Where is the problem. I think, its path is not set. How to do it?
I am getting a NoClassDefFound error when trying to run Spark. I cannot figure out the reason behind this. Please help.
Exception in thread "main" java.lang.NoClassDefFoundError:
org/apache/spark/sql/SchemaRDD
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
at java.lang.Class.privateGetMethodRecursive(Class.java:3048)
at java.lang.Class.getMethod0(Class.java:3018)
at java.lang.Class.getMethod(Class.java:1784)
at org.apache.spark.deploy.SparkSubmit$.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:659)
at org.apache.spark.deploy.SparkSubmit$.doRunMain$1(SparkSubmit.scala:180)
at org.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:205)
at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:120)
at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)
Caused by: java.lang.ClassNotFoundException: org.apache.spark.sql.SchemaRDD
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 10 more
NoClassDefFoundError means Java couldn't find the Class it was looking for. That normally means:
You defined wrongly the classpath.
Java is finding and using the wrong version of the jar (probably because of Maven dependency hell).
Solution for 1 is to check the classpath: make sure you are including the jar that defines org.apache.spark.sql.SchemaRDD.
Solution for 2 is to check if you have a Maven dependency that depends (transitively) on an older version of the resource that defines that class.