spring-boot - 如何忽略 spring-boot-cassandra 默认配置来加载 cassandra 连接实例

Question

我添加了 cassandra starter 的依赖项

<dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-data-cassandra</artifactId>
   <version>2.0.0.RELEASE</version>
</dependency>

但默认配置对我来说很差。

org.springframework.beans.factory.BeanCreationException: 
Error creating bean with name 'cassandraSession' 
defined in class path resource 
[org/springframework/boot/autoconfigure/data/cassandra/
CassandraDataAutoConfiguration.class]:
Invocation of init method failed; nested exception is 
com.datastax.driver.core.exceptions.NoHostAvailableException:
All host(s) tried for query failed (tried: 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), localhost/127.0.0.1:9042
(com.datastax.driver.core.exceptions.TransportException: 
[localhost/127.0.0.1:9042] Cannot connect))

Caused by: com.datastax.driver.core.exceptions.NoHostAvailableException: 
All host(s) tried for query failed (tried: 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), localhost/127.0.0.1:9042 
(com.datastax.driver.core.exceptions.TransportException: 
[localhost/127.0.0.1:9042] Cannot connect))

当我没有配置' spring.data.cassandra.* '时，我希望spring应用程序不加载cassandra连接实例（如cassandraSession）

能做什么？

标签： spring-bootspring-datacassandra-3.0spring-data-cassandra

Answer 1

您需要排除 CassandraDataAutoConfiguration 以禁用 spring boot cassandra 自动配置，例如

@SpringBootApplication
@EnableAutoConfiguration(exclude = { CassandraDataAutoConfiguration.class })
public class Application {
}

然后定义您自己的 Cassandra 配置，例如

@Configuration
@EnableReactiveCassandraRepositories
public class CassandraConfig extends AbstractReactiveCassandraConfiguration {
}