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我在cassandra.yaml文件中将我的Cassandra数据库的authenticator值更改为'PasswordAuthenticator'。 以前我用下面的代码用java连接到数据库。访问在Java中使用'PasswordAuthenticator'的Cassandra数据库
public void connect(String node) {
cluster = Cluster.builder()
.addContactPoint(node).build();
Metadata metadata = cluster.getMetadata();
System.out.printf("Connected to cluster: %s\n",
metadata.getClusterName());
for (Host host : metadata.getAllHosts()) {
System.out.printf("Datatacenter: %s; Host: %s; Rack: %s\n",
host.getDatacenter(), host.getAddress(), host.getRack());
}
session = cluster.connect();
}
下面这段代码给我错误说
Exception in thread "main" com.datastax.driver.core.exceptions.AuthenticationException: Authentication error on host /127.0.0.1: Host /127.0.0.1 requires authentication, but no authenticator found in Cluster configuration
我明白,我需要用我的超级用户的用户名和密码连接到数据库。如何在使用java连接到数据库时提供这些详细信息?