// create a bcm client
    String endpoint = "bcm.bj.baidubce.com";
    String userId = "fakeuser1ba678asdf8as7df6a5sdf67";
    String ak = "ak";
    String sk = "sk";
    BcmClientConfiguration config = new BcmClientConfiguration();
    config.setCredentials(new DefaultBceCredentials(ak, sk));
    config.setEndpoint(endpoint);
    BcmClient client = new BcmClient(config);
    // push custom metric data with value and no dimension
    PushCustomMetricDataRequest request = PushCustomMetricDataRequest.builder()
            .userId(userId)
            .namespace("test_wang")
            .metricName("test_api_no_dimension")
            .value(10.0)
            .timestamp(DateUtils.formatAlternateIso8601Date(new Date(System.currentTimeMillis() - 10 * 60 * 1000)))
            .build();
    PushMetricDataResponse response = client.pushCustomMonitorMetricData(request);
    System.out.println(JsonUtils.toJsonString(response));
    // push custom metric data with statistic value and dimension
    List<Dimension> dimensions = new ArrayList<>();
    dimensions.add(new Dimension().withName("dimension1").withValue("d1"));
    dimensions.add(new Dimension().withName("dimension2").withValue("d2"));
    StatisticValue value = StatisticValue.builder()
            .maximum(1.0).minimum(2.0).sum(3.0).sampleCount(1).average(4.0).build();
    request = PushCustomMetricDataRequest.builder()
            .userId(userId)
            .namespace("test_wang")
            .metricName("test_api_time")
            .dimensions(dimensions)
            .statisticValues(value)
            .timestamp(DateUtils.formatAlternateIso8601Date(new Date(System.currentTimeMillis() - 10 * 60 * 1000)))
            .build();
    response = client.pushCustomMonitorMetricData(request);
    System.out.println(JsonUtils.toJsonString(response));