当使用 Hibernate 响应式与 AWS RDS 时，必须确保在操作数据库时存在 Vert.x 上下文。解决此问题的一种方法是使用 AWS SDK for Java 的 AWS Secrets Manager 凭据提供程序，并将其与 Vert.x 或 Vert.x RxJava 集成。以下是使用 Vert.x RxJava 的示例代码：

// 从 AWS Secrets Manager 中获取凭据
AWSClientCredentials awsCreds = AWSClientCredentials.create(new DefaultAWSCredentialsProviderChain());

SecretsManagerClient secretsManagerClient = SecretsManagerClient.builder()
        .credentialsProvider(awsCreds.getProvider())
        .region(Region.US_EAST_1)
        .build();

GetSecretValueRequest getSecretValueRequest = GetSecretValueRequest.builder()
        .secretId("myDatabaseCredentials")
        .build();

// 获取数据库凭据并使用 Vert.x 上下文创建数据库连接
Maybe connectionMaybe = Single.fromFuture(secretsManagerClient.getSecretValue(getSecretValueRequest))
        .map(secret -> Json.decodeValue(secret.secretString(), JsonObject.class))
        .map(credentials -> PgPool.pool(Vertx.vertx(), new PgConnectOptions()
                .setHost(credentials.getString("host"))
                .setPort(credentials.getInteger("port"))
                .setDatabase(credentials.getString("database"))
                .setUser(credentials.getString("username"))
                .setPassword(credentials.getString("password")),
                new PoolOptions().setMaxSize(5)));

// 在 Vert.x 上下文中使用响应式 Hibernate 实体类和数据库连接执行操作
context.runOnContext(() -> {
    Uni.createFrom().item(new ExampleEntity("John", "Doe"))
            .flatMap(entity -> Uni.createFrom().voidItem()
                    .invoke(() -> System.out.println("Saving entity: " + entity)))
            .flatMap(() -> connectionMaybe.toUni())
            .flatMap(connection -> ReactiveSqlClient.newInstance(connection)
                    .preparedQuery("INSERT INTO example_entity (first_name, last_name) VALUES ($1, $2)")
                    .execute(Tuple.of("John", "Doe")))
            .flatMap(resultSet -> Uni.createFrom().voidItem()
                    .invoke(() -> System.out.println("Rows inserted: " + resultSet.rowCount())))
            .flatMap