我有一个spring boot的应用程序，使用cassandra db 4.0，运行到带有Java1.8292的ubuntu 16.0中。
启动tomcat 9时，catalina.out日志中会显示以下消息：

> 2021-05-11 22:57:49.614  WARN 1184 --- [s0-admin-1] c.d.o.d.i.c.control.ControlConnection: [s0] Error connecting to Node(endPoint=127.0.0.1:9042, hostId=null, 
> 2021-05-11 22:57:49.628  WARN 1184 --- [ main] ConfigServletWebServerApplicationContext: Exception encountered during context initialization - cancelling re
> 2021-05-11 22:57:49.645  INFO 1184 --- [main] ConditionEvaluationReportLoggingListener: Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled. 
> 2021-05-11 22:57:49.692 ERROR 1184 --- [main] o.s.boot.SpringApplication : Application run failed

我检查了cqlsh 6是否正常运行：

Connected to SSP at 127.0.0.1:9042
[cqlsh 6.0.0 | Cassandra 4.0 | CQL spec 3.4.5 | Native protocol v5]
Use HELP for help.
cqlsh>

nodetool状态正常：

Datacenter: datacenter1
=======================
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
--  Address    Load        Tokens  Owns (effective)  Host ID                               Rack
UN  127.0.0.1  414.45 KiB  16      100.0%            f457b508-1b91-456c-85bc-1a621c5c1d78  rack1

但是，Spring Boot无法连接到cassandra。它给了我这个连接到节点的错误（endpoint=127.0.0.1:9042，hostid=null）。
cassandra.yaml和cassandra-env.sh默认配置为127.0.0.1。
有人知道发生了什么事吗？
pom.xml

<!-- https://mvnrepository.com/artifact/com.datastax.cassandra/cassandra-driver-core -->
        <dependency>
            <groupId>com.datastax.cassandra</groupId>
            <artifactId>cassandra-driver-core</artifactId>
            <version>4.0.0</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/com.datastax.spark/spark-cassandra-connector -->
        <dependency>
            <groupId>com.datastax.spark</groupId>
            <artifactId>spark-cassandra-connector_2.12</artifactId>
            <version>3.0.0</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.apache.spark/spark-core -->
        <dependency>
            <groupId>org.apache.spark</groupId>
            <artifactId>spark-core_2.12</artifactId>
            <version>3.1.1</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.apache.spark/spark-sql -->
        <dependency>
            <groupId>org.apache.spark</groupId>
            <artifactId>spark-sql_2.12</artifactId>
            <version>3.1.1</version>
        </dependency>