Cassandra java操作(一) 初体验

引入Gradle依赖

// <https://mvnrepository.com/artifact/com.datastax.oss/java-driver-core>
compile group: 'com.datastax.oss', name: 'java-driver-core', version: '4.8.0'

启动Cassandra

docker run -p 9042:9042 -d ttbb/cassandra:stand-alone-eth0

查询版本号

//注意，driver 4.0版本删除了cluster对象，session才是现在基础的对象
public class CassandraSession {

    public static void main(String[] args) throws Exception {
        try (CqlSession session = CqlSession.builder().build()) {
            ResultSet rs = session.execute("select release_version from system.local");
            Row row = rs.one();
            System.out.println(row.getString("release_version"));
        }
    }

}
//输出 4.0-beta1

demo代码参考

https://github.com/Shoothzj/java-demo