注入构造函数时出错，com.datastax.driver.core.exceptions.NoHostAvailableException答案

【问题标题】：Error injecting constructor, com.datastax.driver.core.exceptions.NoHostAvailableException注入构造函数时出错，com.datastax.driver.core.exceptions.NoHostAvailableException
【发布时间】：2019-05-25 05:51:38
【问题描述】：

我正在为 Windows 10 使用 docker。我试图连接到我的本地主机，但它给出了一个错误。我使用了 command > docker start cassandra-ce ... 这是成功的，但是当我运行 'sbt run' 命令并在浏览器中输入我的 localhost:9000 时出现错误：

Uncaught error from thread [application-akka.actor.default-dispatcher-4]: null, s
hutting down JVM since 'akka.jvm-exit-on-fatal-error' is enabled for ActorSystem[
application]
java.lang.ExceptionInInitializerError
        at com.consultengine.services.InviteService.getAllInviteReceived(InviteSe
rvice.scala:54)
        at com.consultengine.controllers.v1.InviteController.$anonfun$getAllInvit
eReceived$2(InviteController.scala:130)
        at scala.concurrent.Future$.$anonfun$apply$1(Future.scala:655)
        at scala.util.Success.$anonfun$map$1(Try.scala:251)
        at scala.util.Success.map(Try.scala:209)
        at scala.concurrent.Future.$anonfun$map$1(Future.scala:289)
        at scala.concurrent.impl.Promise.liftedTree1$1(Promise.scala:29)
        at scala.concurrent.impl.Promise.$anonfun$transform$1(Promise.scala:29)
        at scala.concurrent.impl.CallbackRunnable.run(Promise.scala:60)
        at akka.dispatch.BatchingExecutor$AbstractBatch.processBatch(BatchingExec
utor.scala:55)
        at akka.dispatch.BatchingExecutor$BlockableBatch.$anonfun$run$1(BatchingE
xecutor.scala:91)
        at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:12)

        at scala.concurrent.BlockContext$.withBlockContext(BlockContext.scala:81)

        at akka.dispatch.BatchingExecutor$BlockableBatch.run(BatchingExecutor.sca
la:91)
        at akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:40)
        at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(ForkJ
oinExecutorConfigurator.scala:43)
        at akka.dispatch.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
        at akka.dispatch.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.jav
a:1339)
        at akka.dispatch.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
        at akka.dispatch.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.j
ava:107)
Caused by: com.impetus.kundera.configure.schema.SchemaGenerationException: Error
while opening socket, Caused by: .
        at com.impetus.client.cassandra.schemamanager.CassandraSchemaManager.init
iateClient(CassandraSchemaManager.java:718)
        at com.impetus.kundera.configure.schema.api.AbstractSchemaManager.exportS
chema(AbstractSchemaManager.java:112)
        at com.impetus.client.cassandra.schemamanager.CassandraSchemaManager.expo
rtSchema(CassandraSchemaManager.java:166)
        at com.impetus.kundera.configure.SchemaConfiguration.configure(SchemaConf
iguration.java:191)
        at com.impetus.kundera.configure.ClientMetadataBuilder.buildClientFactory
Metadata(ClientMetadataBuilder.java:48)
        at com.impetus.kundera.persistence.EntityManagerFactoryImpl.configureClie
ntFactories(EntityManagerFactoryImpl.java:408)
        at com.impetus.kundera.persistence.EntityManagerFactoryImpl.configure(Ent
ityManagerFactoryImpl.java:161)
        at com.impetus.kundera.persistence.EntityManagerFactoryImpl.<init>(Entity
ManagerFactoryImpl.java:135)
        at com.impetus.kundera.KunderaPersistence.createEntityManagerFactory(Kund
eraPersistence.java:85)
        at javax.persistence.Persistence.createEntityManagerFactory(Persistence.j
ava:79)
        at com.consultengine.daos.InviteDAOImpl$.<init>(InviteDAO.scala:29)
        at com.consultengine.daos.InviteDAOImpl$.<clinit>(InviteDAO.scala)
        ... 20 more
Caused by: org.apache.thrift.transport.TTransportException: java.net.ConnectExcep
tion: Connection refused: connect
        at org.apache.thrift.transport.TSocket.open(TSocket.java:187)
        at com.impetus.client.cassandra.schemamanager.CassandraSchemaManager.init
iateClient(CassandraSchemaManager.java:695)
        ... 31 more
Caused by: java.net.ConnectException: Connection refused: connect
        at java.net.DualStackPlainSocketImpl.connect0(Native Method)
        at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketIm
pl.java:79)
        at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.jav
a:350)
        at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketI
mpl.java:206)
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:
188)
        at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
        at java.net.Socket.connect(Socket.java:589)
        at org.apache.thrift.transport.TSocket.open(TSocket.java:182)
        ... 32 more
[error] a.a.ActorSystemImpl - Uncaught error from thread [application-akka.actor.
default-dispatcher-4]: null, shutting down JVM since 'akka.jvm-exit-on-fatal-erro
r' is enabled for ActorSystem[application]
java.lang.ExceptionInInitializerError: null
        at com.consultengine.services.InviteService.getAllInviteReceived(InviteSe
rvice.scala:54)
        at com.consultengine.controllers.v1.InviteController.$anonfun$getAllInvit
eReceived$2(InviteController.scala:130)
        at scala.concurrent.Future$.$anonfun$apply$1(Future.scala:655)
        at scala.util.Success.$anonfun$map$1(Try.scala:251)
        at scala.util.Success.map(Try.scala:209)
        at scala.concurrent.Future.$anonfun$map$1(Future.scala:289)
        at scala.concurrent.impl.Promise.liftedTree1$1(Promise.scala:29)
        at scala.concurrent.impl.Promise.$anonfun$transform$1(Promise.scala:29)
        at scala.concurrent.impl.CallbackRunnable.run(Promise.scala:60)
        at akka.dispatch.BatchingExecutor$AbstractBatch.processBatch(BatchingExec
utor.scala:55)
Caused by: com.impetus.kundera.configure.schema.SchemaGenerationException: Error
while opening socket, Caused by: .
        at com.impetus.client.cassandra.schemamanager.CassandraSchemaManager.init
iateClient(CassandraSchemaManager.java:718)
        at com.impetus.kundera.configure.schema.api.AbstractSchemaManager.exportS
chema(AbstractSchemaManager.java:112)
        at com.impetus.client.cassandra.schemamanager.CassandraSchemaManager.expo
rtSchema(CassandraSchemaManager.java:166)
        at com.impetus.kundera.configure.SchemaConfiguration.configure(SchemaConf
iguration.java:191)
        at com.impetus.kundera.configure.ClientMetadataBuilder.buildClientFactory
Metadata(ClientMetadataBuilder.java:48)
        at com.impetus.kundera.persistence.EntityManagerFactoryImpl.configureClie
ntFactories(EntityManagerFactoryImpl.java:408)
        at com.impetus.kundera.persistence.EntityManagerFactoryImpl.configure(Ent
ityManagerFactoryImpl.java:161)
        at com.impetus.kundera.persistence.EntityManagerFactoryImpl.<init>(Entity
ManagerFactoryImpl.java:135)
        at com.impetus.kundera.KunderaPersistence.createEntityManagerFactory(Kund
eraPersistence.java:85)
        at javax.persistence.Persistence.createEntityManagerFactory(Persistence.j
ava:79)
Caused by: org.apache.thrift.transport.TTransportException: java.net.ConnectExcep
tion: Connection refused: connect
        at org.apache.thrift.transport.TSocket.open(TSocket.java:187)
        at com.impetus.client.cassandra.schemamanager.CassandraSchemaManager.init
iateClient(CassandraSchemaManager.java:695)
        at com.impetus.kundera.configure.schema.api.AbstractSchemaManager.exportS
chema(AbstractSchemaManager.java:112)
        at com.impetus.client.cassandra.schemamanager.CassandraSchemaManager.expo
rtSchema(CassandraSchemaManager.java:166)
        at com.impetus.kundera.configure.SchemaConfiguration.configure(SchemaConf
iguration.java:191)
        at com.impetus.kundera.configure.ClientMetadataBuilder.buildClientFactory
Metadata(ClientMetadataBuilder.java:48)
        at com.impetus.kundera.persistence.EntityManagerFactoryImpl.configureClie
ntFactories(EntityManagerFactoryImpl.java:408)
        at com.impetus.kundera.persistence.EntityManagerFactoryImpl.configure(Ent
ityManagerFactoryImpl.java:161)
        at com.impetus.kundera.persistence.EntityManagerFactoryImpl.<init>(Entity
ManagerFactoryImpl.java:135)
        at com.impetus.kundera.KunderaPersistence.createEntityManagerFactory(Kund
eraPersistence.java:85)
Caused by: java.net.ConnectException: Connection refused: connect
        at java.net.DualStackPlainSocketImpl.connect0(Native Method)
        at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketIm
pl.java:79)
        at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.jav
a:350)
        at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketI
mpl.java:206)
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:
188)
        at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
        at java.net.Socket.connect(Socket.java:589)
        at org.apache.thrift.transport.TSocket.open(TSocket.java:182)
        at com.impetus.client.cassandra.schemamanager.CassandraSchemaManager.init
iateClient(CassandraSchemaManager.java:695)

我也改变了我的 application.conf

application.baseUrl="http://localhost:9000"
ce.webserver.url="http://localhost:8100"
ce.cassandra.host="localhost"
version=33

和我的persistance.xml 文件到本地主机和端口9160：

<properties>
            <property name="kundera.nodes" value="localhost" />
            <property name="kundera.port" value="9160" />
            <property name="kundera.keyspace" value="cedb" />
            <property name="kundera.dialect" value="cassandra" />
            <property name="kundera.ddl.auto.prepare" value="update" />
            <property name="kundera.client.lookup.class" value="com.impetus.client.cassandra.thrift.ThriftClientFactory" />
        </properties>

【问题讨论】：

启动 cassandra 的完整命令是什么？
@HansikaMadushanWeerasena 我用过：'docker start cassandra' 然后'docker ps'

标签： scala docker cassandra

【解决方案1】：

这是因为你在 docker 中启动 Cassandra 时没有做端口映射。您的 Cassandra 仅在该特定 docker 网络中可见。使用以下命令启动带有端口映射的 Cassandra。

docker run -p 9042:9042 cassandra

然后你会在docker ps看到0.0.0.0:9042->9042/tcp

对于第二个错误，如果您不想自动管理架构，请将 <property name="kundera.port" value="9160" /> 端口更改为 9042 并删除 <property name="kundera.ddl.auto.prepare" value="update" />

如果要自动管理架构，请将<property name="kundera.port" value="9160" /> 端口更改为 9042 并使用以下命令在 docker 中启动 Cassandra，启动 Cassandra thrift 服务器并映射 thrift 端口。

docker run -p 9042:9042 -p 9160:9160 -e CASSANDRA_START_RPC=true cassandra

【讨论】：

以前的错误是 docker。不做端口映射。现在问题在于昆德拉配置。可以在此处找到类似的错误 (stackoverflow.com/questions/42374743/…) 似乎您想删除模式的自动管理或打开 cassandra 服务器中的节俭端口。您需要自动管理架构吗？
谢谢，它的工作！