我的代码有问题。代码可以在其他计算机上运行，但不能在我的计算机上运行。我读到了有关解决此问题的信息，但将 jdk 更改为 http://jdk8.java.net/lambda/ 的解决方案仍然不起作用。任何想法？
Caused by: java.lang.reflect.GenericSignatureFormatError: Signature Parse error: expected ')'
sun.reflect.generics.parser.SignatureParser.error(SignatureParser.java:124) ~[na:1.8.0-ea]
at sun.reflect.generics.parser.SignatureParser.parseFormalParameters(SignatureParser.java:586) ~[na:1.8.0-ea]
at sun.reflect.generics.parser.SignatureParser.parseMethodTypeSignature(SignatureParser.java:576) ~[na:1.8.0-ea]
at sun.reflect.generics.parser.SignatureParser.parseMethodSig(SignatureParser.java:171) ~[na:1.8.0-ea]
at sun.reflect.generics.repository.ConstructorRepository.parse(ConstructorRepository.java:55) ~[na:1.8.0-ea]
at sun.reflect.generics.repository.ConstructorRepository.parse(ConstructorRepository.java:43) ~[na:1.8.0-ea]
at sun.reflect.generics.repository.AbstractRepository.<init>(AbstractRepository.java:74) ~[na:1.8.0-ea]
at sun.reflect.generics.repository.GenericDeclRepository.<init>(GenericDeclRepository.java:48) ~[na:1.8.0-ea]
at sun.reflect.generics.repository.ConstructorRepository.<init>(ConstructorRepository.java:51) ~[na:1.8.0-ea]
at sun.reflect.generics.repository.MethodRepository.<init>(MethodRepository.java:46) ~[na:1.8.0-ea]
at sun.reflect.generics.repository.MethodRepository.make(MethodRepository.java:59) ~[na:1.8.0-ea]
at java.lang.reflect.Method.getGenericInfo(Method.java:101) ~[na:1.8.0-ea]
at java.lang.reflect.Method.getGenericReturnType(Method.java:249) ~[na:1.8.0-ea]
at org.hibernate.annotations.common.reflection.java.JavaXClass.getDeclaredMethodProperties(JavaXClass.java:113) ~[hibernate-commons-annotations-4.0.5.Final.jar:4.0.5.Final]
at org.hibernate.annotations.common.reflection.java.JavaXClass.getDeclaredProperties(JavaXClass.java:129) ~[hibernate-commons-annotations-4.0.5.Final.jar:4.0.5.Final]
at org.hibernate.annotations.common.reflection.java.JavaXClass.getDeclaredProperties(JavaXClass.java:121) ~[hibernate-commons-annotations-4.0.5.Final.jar:4.0.5.Final]
at org.hibernate.cfg.InheritanceState.determineDefaultAccessType(InheritanceState.java:263) ~[hibernate-core-4.3.10.Final.jar:4.3.10.Final]
at org.hibernate.cfg.InheritanceState.getElementsToProcess(InheritanceState.java:224) ~[hibernate-core-4.3.10.Final.jar:4.3.10.Final]
at org.hibernate.cfg.AnnotationBinder.bindClass(AnnotationBinder.java:775) ~[hibernate-core-4.3.10.Final.jar:4.3.10.Final]
at org.hibernate.cfg.Configuration$MetadataSourceQueue.processAnnotatedClassesQueue(Configuration.java:3845) ~[hibernate-core-4.3.10.Final.jar:4.3.10.Final]
at org.hibernate.cfg.Configuration$MetadataSourceQueue.processMetadata(Configuration.java:3799) ~[hibernate-core-4.3.10.Final.jar:4.3.10.Final]
at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1412) ~[hibernate-core-4.3.10.Final.jar:4.3.10.Final]
at …我尝试使用spark为casandra保存一些数据,但是当我尝试保存Date时,我得到了
线程"main"中的异常org.apache.spark.sql.AnalysisException:无法从field2#5中提取值; org.apache.spark.sql.catalyst.expressions.ExtractValue $ .apply(complexTypeExtractors.scala:73)at org.apache.spark.sql.catalyst.analysis.Analyzer $ ResolveReferences $$ anonfun $ apply $ 10 $$ anonfun $ applyOrElse $ 4.applyOrElse(Analyzer.scala:475)atg.apache.spark.sql.catalyst.analysis.Analyzer $ ResolveReferences $$ anonfun $ apply $ 10 $$ anonfun $ applyOrElse $ 4.applyOrElse(Analyzer.scala:467)at org .apache.spark.sql.catalyst.trees.TreeNode $$ anonfun $ transformUp $ 2.apply(TreeNode.scala:339)at org.apache.spark.sql.catalyst.trees.TreeNode $$ anonfun $ transformUp $ 2.apply( TreeNode.scala:339)atg.apache.spark.sql.catalyst.trees.CurrentOrigin $ .withOrigin(TreeNode.scala:69)at org.apache.spark.sql.catalyst.trees.TreeNode.transformUp(TreeNode.scala :338)org.apache.spark.sql.catalyst.trees.TreeNode $$ anonfun $ 5.apply(TreeNode.scala:332)at org.apache.spark.sql.catalyst.trees.TreeNode $$ anonfun $ 5.apply (TreeNode.scala:332)在sca的org.apache.spark.sql.catalyst.trees.TreeNode $$ anonfun $ 4.apply(TreeNode.scala:281)la.collection.Iterator $$ anon $ 11.next(Iterator.scala:328)at scala.collection.Iterator $ class.foreach(Iterator.scala:727)at scala.collection.AbstractIterator.foreach(Iterator.scala:1157) at scala.collection.generic.Growable $ class.$ …
我试图将一些数据发送到kafka,但是当我运行我的代码时,我得到了
13:20:17.688 [kafka-producer-network-thread | producer-1]
DEBUG org.apache.kafka.clients.NetworkClient - Node -1 disconnected.
13:20:17.784 [kafka-producer-network-thread | producer-1] DEBUG org.apache.kafka.clients.NetworkClient - Initialize connection to node -1 for sending metadata request
13:20:17.784 [kafka-producer-network-thread | producer-1] DEBUG org.apache.kafka.clients.NetworkClient - Initiating connection to node -1 at kafkaAdress:2181.
13:20:18.781 [kafka-producer-network-thread | producer-1] DEBUG org.apache.kafka.common.network.Selector - Connection with kafkaAdress/addressId disconnected
java.net.ConnectException: Connection refused: no further information
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(Unknown Source)
at org.apache.kafka.common.network.PlaintextTransportLayer.finishConnect(PlaintextTransportLayer.java:54)
at org.apache.kafka.common.network.KafkaChannel.finishConnect(KafkaChannel.java:72)
at org.apache.kafka.common.network.Selector.poll(Selector.java:274)
at org.apache.kafka.clients.NetworkClient.poll(NetworkClient.java:256)
at org.apache.kafka.clients.producer.internals.Sender.run(Sender.java:216)
at org.apache.kafka.clients.producer.internals.Sender.run(Sender.java:128)
at java.lang.Thread.run(Unknown Source)
码: …