Spring 启动 Cassandra "Error creating bean with name 'session'"

Question

我对简单的 Spring 启动应用程序有疑问。我正在使用：

spring-boot-starter-parent
spring-boot-starter-data-cassandra
Cassandra 3.11.3（CentOS 7 服务器和本地 Mac OS）（通过 cqlsh 查询）

我遵循了 https://www.baeldung.com/spring-data-cassandra-tutorial 的简单指南，无论 Cassandra 是运行还是不是运行我启动时出现一个错误：

2018-11-25 09:12:34.581 ERROR 83213 --- [main] o.s.boot.SpringApplication: Application run failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'session' defined in class path resource [some/project/path/CassandraConfig.class]: Invocation of init method failed; nested exception is java.lang.NoClassDefFoundError: com/codahale/metrics/JmxReporte

我的配置class:

@Configuration
@EnableCassandraRepositories(basePackages = "packagename")
public class CassandraConfig extends AbstractCassandraConfiguration {

    @Override
    protected String getKeyspaceName() {
        return "test";
    }

    @Bean
    public CassandraClusterFactoryBean cluster() {
        CassandraClusterFactoryBean cluster = new CassandraClusterFactoryBean();
        cluster.setContactPoints("127.0.0.1");
        cluster.setPort(9042);
        return cluster;
    }

    @Override
    public SchemaAction getSchemaAction() {
        return SchemaAction.CREATE_IF_NOT_EXISTS;
    }

    @Override
    public String[] getEntityBasePackages() {
        return new String[]{"packagename"};
    }
}

实体：

@Table
public class Image implements Serializable {

    @PrimaryKeyColumn(
        name = "key",
        ordinal = 0,
        type = PrimaryKeyType.PARTITIONED)
    private UUID id;

    @Column
    private Blob object;
}

存储库：

@Repository
public interface ImagesRepository extends CrudRepository<Image, UUID> {
}

Cassandra 结构：

CREATE TABLE images (
    key text,
    object blob,
    PRIMARY KEY (key)
);

另外 https://github.com/springframeworkguru/spring-boot-cassandra-example 也给我创建 bean 的错误。

Answer 1

您缺少 Dropwizard 依赖项：

You need the metrics-core library as a dependency:
<dependencies>
<dependency>
    <groupId>io.dropwizard.metrics</groupId>
    <artifactId>metrics-core</artifactId>
    <version>${metrics.version}</version>
</dependency>
Note

Make sure you have a metrics.version property declared in your POM with the current version, which is 3.1.0.

Spring 启动 Cassandra "Error creating bean with name 'session'"

Spring boot Cassandra "Error creating bean with name 'session'"

java

spring

cassandra

spring-boot

spring-data-cassandra