HarmonyOS实战开发：@ohos.data.distributedKVStore (分布式键值数据库)

import ohos.data.distributed.DistributedKvManager;
import ohos.data.distributed.common.KvManagerConfig;
import ohos.data.distributed.common.TimeOutOption;
import ohos.data.distributed.common.entity.KeyValue;
import ohos.data.distributed.common.entity.Priority;
import ohos.data.distributed.common.entity.ResultSet;
import ohos.data.distributed.common.entity.SyncMode;
 
public class DistributedKvStoreExample {
    private static final String APP_ID = "com.huawei.examples.kvstore";
    private static final String DEVICE_ID = "device1";
    private static final String STORE_ID = "store1";
 
    public static void main(String[] args) {
        // 初始化配置
        KvManagerConfig config = new KvManagerConfig();
        config.appId = APP_ID;
        config.deviceId = DEVICE_ID;
        config.syncMode = SyncMode.SYNC;
        config.timeout = TimeOutOption.TIME_OUT_IN_EPOCH;
 
        // 获取DistributedKvManager实例
        DistributedKvManager manager = DistributedKvManager.getInstance();
 
        // 打开KV Store
        try {
            manager.openKvStore(config, new DistributedKvManager.Callback() {
                @Override
                public void onSuccess(DistributedKvStore store) {
                    // 使用store进行操作
                    // 例如：插入键值对
                    KeyValue keyValue = new KeyValue("key1", "value1".getBytes());
                    store.put(keyValue, Priority.PRIORITY_LOW);
 
                    // 查询键值对
                    ResultSet resultSet = store.getEntries("key1");
                    if (resultSet != null) {
                        for (KeyValue kv : resultSet) {
                            System.out.println("Key: " + kv.getKey() + ", Value: " + new String(kv.getValue()));
                        }