我已經按照 CassandraOperations 將記錄插入到 cassandra 中。因為我需要為一行插入 TTL 值，所以我選擇了這種方式。CrudRespository 不能有存儲 TTL 值的功能。下面是 Cassandra 配置類@Override@Beanpublic CassandraClusterFactoryBean cluster() {    final CassandraClusterFactoryBean cluster = new CassandraClusterFactoryBean();    cluster.setContactPoints(cassandra_contactPoints);    cluster.setPort(Integer.parseInt(cassandra_port));    cluster.setUsername(cassandra_username);    cluster.setPassword(cassandra_password);    LOGGER.info("Cluster created with contact points [" + cassandra_port + "] " + "& port ["            + Integer.parseInt(cassandra_port) + "].");    return cluster;}@Override@Beanpublic CassandraMappingContext cassandraMapping() throws ClassNotFoundException {    return new BasicCassandraMappingContext();}@Overrideprotected String getKeyspaceName() {    return cassandra_keyspaceName;}當我啟動應用程序時，它拋出以下異常Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.cassandra.core.CassandraAdminTemplate]: Factory method 'cassandraTemplate' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in class path resource [com/sample/session/config/CassandraConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.cassandra.SessionFactory]: Factory method 'sessionFactory' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'session' defined in class path resource [com/sample/session/config/CassandraConfig.class]: Invocation of init method failed; nested exception is java.lang.NoClassDefFoundError: com/codahale/metrics/JmxReporter