我完全是Cassandra新手，所以我的错误可能很明显。
我正在尝试使用Spring Boot（版本2.3.0.M2）创建一个应用程序，该应用程序连接到安装在本地主机上的Cassandra（版本3.11.6）。
我遇到了java.lang.IllegalStateException并显示以下消息： Since you provided explicit contact points, the local DC must be explicitly set (see basic.load-balancing-policy.local-datacenter in the config, or set it programmatically with SessionBuilder.withLocalDatacenter). Current contact points are: Node(endPoint=localhost:9042, hostId=16a785a4-eaf3-4a4d-a216-5244d75206aa, hashCode=7b0b99d7)=datacenter1. Current DCs in this cluster are: datacenter1
我的POM文件如下：
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.3.0.M2</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.test</groupId>
<artifactId>cassandra</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>cassandra</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-cassandra</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>io.projectreactor</groupId>
<artifactId>reactor-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
</pluginRepository>
</pluginRepositories>
</project>
public class CassandraConfig extends AbstractCassandraConfiguration {
public static final String KEYSPACE = "test_keyspace";
@Override
public SchemaAction getSchemaAction() {
return SchemaAction.CREATE_IF_NOT_EXISTS;
}
@Override
protected List<CreateKeyspaceSpecification> getKeyspaceCreations() {
CreateKeyspaceSpecification specification = CreateKeyspaceSpecification.createKeyspace(KEYSPACE);
return Arrays.asList(specification);
}
@Override
protected List<DropKeyspaceSpecification> getKeyspaceDrops() {
return Arrays.asList(DropKeyspaceSpecification.dropKeyspace(KEYSPACE));
}
@Override
protected String getKeyspaceName() {
return KEYSPACE;
}
@Override
public String[] getEntityBasePackages() {
return new String[]{"com.test.cassandra.entity"};
}
}
我的属性文件包含以下配置：
spring.data.cassandara.keyspace-name=test_keyspace
spring.data.cassandra.contact-points=localhost
spring.data.cassanda.port=9042
spring.data.cassandra.schema-act=create_if_not_exists
我也尝试过使用
spring.data.cassandra.contact-points=dc1
当我执行这个应用程序时，从日志中可以看到我正在使用以下版本的DataStax Java driver for Apache Cassandra(R) (com.datastax.oss:java-driver-core) 4.4.0
在cassandra-rackdc.properties文件中，我将名称设置为
dc=dc1
我已经进行了几次测试，添加了配置参数，甚至按照datastax文档的描述在类路径下添加了一个application.conf文件，但是没有任何成功的迹象。你有任何线索应该在哪里做吗？