前提條件

• 已初始化Client。具體操作，請參見初始化。

• 已創(chuàng)建數(shù)據(jù)表。

參數(shù)

示例

以下示例用于查詢數(shù)據(jù)表的表結構信息、可選配置信息和預留吞吐量信息。

private static void describeTable(SyncClient client) {
    //設置數(shù)據(jù)表名稱。
    DescribeTableRequest request = new DescribeTableRequest("<TABLE_NAME>");
    DescribeTableResponse response = client.describeTable(request);
    TableMeta tableMeta = response.getTableMeta();
    System.out.println("表的名稱：" + tableMeta.getTableName());
    System.out.println("表的主鍵：");
    for (PrimaryKeySchema primaryKeySchema : tableMeta.getPrimaryKeyList()) {
        System.out.println(primaryKeySchema);
    }
    TableOptions tableOptions = response.getTableOptions();
    System.out.println("表的TTL:" + tableOptions.getTimeToLive());
    System.out.println("表的MaxVersions:" + tableOptions.getMaxVersions());
    //只能查看加密表的加密配置信息。非加密表無此配置項。
    //System.out.println("表的加密配置：" + response.getSseDetails());
    ReservedThroughputDetails reservedThroughputDetails = response.getReservedThroughputDetails();
    System.out.println("表的預留讀吞吐量："
            + reservedThroughputDetails.getCapacityUnit().getReadCapacityUnit());
    System.out.println("表的預留寫吞吐量："
            + reservedThroughputDetails.getCapacityUnit().getWriteCapacityUnit());
}