我们使用数据采集系统作为设备，并通过MQTT协议将一些信号值发送到分配给物联网集线器的容器中。设备和iot-hub之间的连接工作良好，我们接收到一些JSON数据。当我们打开JSON数据时，我们无法读取"body"中的温度值。在JSON数据中，因为它们是编码的。如果您能告诉我们，我们应该如何自动将JSON数据转换为适当的格式，以便我们可以读取数字中的值，我将不胜感激。
请在JSON数据中找到下面的三行代码。其余的行是相同的，但它们的编码不同。
{"EnqueuedTimeUtc"2022 - 02 - 09年t10:00:30.8600000z","Properties":{"Sensor""},"SystemProperties":{"connectionDeviceId"Iba","connectionAuthMethod":"{"scope"device","type":"sas","issuer":"iothub","acceptingIpFilterRule":零}","connectionDeviceGenerationId":"637799949903534194","enqueuedTime":"2022 - 02 - 09 - t10:00:30.8600000z"},"Body":"My42MjI3NTQ ="}
{"EnqueuedTimeUtc"2022 - 02 - 09年t10:00:30.8750000z","Properties":{"Sensor""},"SystemProperties":{"connectionDeviceId"Iba","connectionAuthMethod":"{"scope"device","type":"sas","issuer":"iothub","acceptingIpFilterRule":零}","connectionDeviceGenerationId":"637799949903534194","enqueuedTime":"2022 - 02 - 09 - t10:00:30.8750000z"},"Body":"My42ODEyNDY ="}
{"EnqueuedTimeUtc"2022 - 02 - 09年t10:00:30.9070000z","Properties":{"Sensor""},"SystemProperties":{"connectionDeviceId"Iba","connectionAuthMethod":"{"scope"device","type":"sas","issuer":"iothub","acceptingIpFilterRule":零}","connectionDeviceGenerationId":"637799949903534194","enqueuedTime":"2022 - 02 - 09 - t10:00:30.9070000z"},"Body":"My43Mzk1OTI ="}
提前感谢!
BrMasoud
您应该向消息主题添加两个参数，例如内容类型(ct)和内容编码(ce)，如下面的示例所示:
devices/device1/messages/events/$.ct=application%2Fjson&$.ce=utf-8