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我在cassandra.yaml文件中將我的Cassandra數據庫的authenticator值更改爲'PasswordAuthenticator'。 以前我用下面的代碼用java連接到數據庫。訪問在Java中使用'PasswordAuthenticator'的Cassandra數據庫
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();
}
下面這段代碼給我錯誤說
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,我需要用我的超級用戶的用戶名和密碼連接到數據庫。如何在使用java連接到數據庫時提供這些詳細信息?