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。

依赖性是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docker-compose文件，该文件启动容器cassandra:3.11.3，端口9042、9160、7199、7000、7001和卷cassandra_data:/data。稍后，我将其全部放在某个GitHub存储库中，并使用完整的代码编辑此答案。

我的CassandraConfiguration类具有返回CassandraCustomConversions，ClusterBuilderCustomizer和Session的bean，还自动连接了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>

无法连接到dockerized卡桑德拉

1 个答案: