我们只在一台开发机器上遇到了一个奇怪的错误,对于其他机器,它工作得很好(我个人不能重现这个问题):
Caused by: java.lang.ClassCastException: scala.collection.immutable.$colon$colon cannot be cast to scala.collection.Seq
at scala.Option.map (Option.scala:163)
at com.lightbend.lagom.maven.RunAllMojo.$anonfun$execute$15 (ServiceMojos.scala:402
到目前为止,这是一份记录:
$ sbt new lagom/lagom-scala.g8
[info] Loading global plugins from /Users/abrahma/.sbt/1.0/plugins
[info] Set current project to lagomlife (in build file:/Users/abrahma/Bitbucket/Practice-Scala/LagomLife/)
[info] Set current project to lagomlife (in build file:/Users/abrahma/Bitbucket/P
下午好,
但是,在运行命令时,我试图遵循:
sbt new -Dsbt.version=0.13.13 lagom/lagom-scala.g8
我得到以下错误:
Template not found for: -Dsbt.version 0.13.13 lagom/lagom-scala.g8
正如本教程的安装部分所述,我检查了我的java版本:
java version "1.8.0_131"
Java(TM) SE Runtime Environment (build 1.8.0_131-b11)
Java HotSpot(TM) 64-Bit Server VM (bu
当服务在库贝开始时,我有错误:
2020-09-16T22:01:17.370+0300 [warn] com.lightbend.lagom.internal.javadsl.persistence.jpa.JpaSessionImpl [] - Exception while initializing JPA EntityManagerFactory
javax.persistence.PersistenceException: No Persistence provider for EntityManager named defaultPersistenceUnit
at jav
我在lagom项目中创建了一个模块。我的模块只有kafka消费者,用于在cassandra中消费消息和存储消息事件。感谢为什么,在我的LagomApplicationLoader中,我没有定义任何服务,并且用LagomServer.forServices()初始化lagomServer为空。但是,每当我启动我的应用程序时,我都会得到以下异常:
java.lang.IllegalArgumentException
at com.lightbend.lagom.scaladsl.server.LagomServer$$anon$2.<init>(LagomServer.scal
谁能告诉我为什么用插件'addSbtPlugin("com.github.mpeltonen“% " sbt -idea”% "1.6.0")‘运行sbt gen-idea时,创建模块'lagom-internal-meta-project-cassandra’时会卡顿。
[info] Creating IDEA module for project 'lagom-internal-meta-project-cassandra' ...
[error] Missing extra test configuration
java
我的服务是这样宣布的:
public interface BlogQueryService extends Service {
public ServiceCall<String, Source<String, ?>> tick(int interval);
public ServiceCall<String, Source<String, ?>> tock();
public ServiceCall<NotUsed, Source<PostSummary, ?>> newPosts();
public
我正在使用Lagom( scala )框架,我可以找到任何方法来保存具有复杂类型的cassandra中的scala case类对象。那么如何在Lagom scala中插入cassandra UDT。有谁能解释一下如何使用BoundStatement.setUDTValue()方法吗?
I have tried to do by using com.datastax.driver.mapping.annotations.UDT.
but does not work for me. I have also tried com.datastax.driver.core
Session Interf