无法连接到 dockerized Cassandra

Question

代码抛出以下异常：

 org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cassandraConfiguration': Invocation of init method failed; nested exception is 

 com.datastax.driver.core.exceptions.NoHostAvailableException:
 All host(s) tried for query failed
 (
   tried:

   localhost/127.0.0.1:9042
   (com.datastax.driver.core.exceptions.TransportException: [localhost/127.0.0.1:9042]
    Cannot connect),

   localhost/0:0:0:0:0:0:0:1:9042
   (com.datastax.driver.core.exceptions.TransportException: [localhost/0:0:0:0:0:0:0:1:9042]
    Cannot connect)
 )

我正在使用JHipster example found at GitHub。运行mvnw clean test 不会返回任何失败。

端口 9042 和 9160 已在防火墙中打开。

依赖项是 cassandra-driver-extras、cassandra-driver-mapping 和 spring-boot-starter-data-cassandra。

Answer 1

这是 application-dev.yml 的重要部分：

spring:
    data:
        cassandra:
            contactPoints: localhost
            protocolVersion: V4
            compression: LZ4
            keyspaceName: demo_ks
            entityPackage: com.demo.domain
            port: 9042

必须使用启动容器 cassandra:3.11.3、端口 9042、9160、7199、7000、7001 和卷 cassandra_data:/data 的 docker-compose 文件。稍后我会将其全部放在某个 GitHub 存储库中，并使用完整代码编辑此答案。

我的CassandraConfiguration 类有返回CassandraCustomConversions、ClusterBuilderCustomizer 和Session 的bean，也自动连接Cluster 和MetricRegistry。

pom.xml的重要部分：

<properties>
    <spring-boot.version>2.0.5.RELEASE</spring-boot.version>
</properties>

<dependencies>
    <dependency>
        <groupId>org.cassandraunit</groupId>
        <artifactId>cassandra-unit-spring</artifactId>
        <scope>test</scope>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-cassandra</artifactId>
    </dependency>

    <dependency>
        <groupId>org.springframework.data</groupId>
        <artifactId>spring-data-cassandra</artifactId>
    </dependency>

    <dependency>
        <groupId>com.datastax.cassandra</groupId>
        <artifactId>cassandra-driver-extras</artifactId>
    </dependency>

    <dependency>
        <groupId>com.datastax.cassandra</groupId>
        <artifactId>cassandra-driver-mapping</artifactId>
    </dependency>
</dependencies>