MqttClientApplicationMessage 类 |
来自客户端的一次消息的内容，当前类主要是在MQTT的服务端进行使用
The content of a message from the client. The current class is mainly used on the MQTT server
The content of a message from the client. The current class is mainly used on the MQTT server
继承层次SystemObject
HslCommunication.MQTTMqttApplicationMessage
HslCommunication.MQTTMqttClientApplicationMessage
HslCommunication.MQTTMqttApplicationMessage
HslCommunication.MQTTMqttClientApplicationMessage
命名空间： HslCommunication.MQTT
程序集： HslCommunication (在 HslCommunication.dll 中) 版本：12.1.2.0 (12.1.2.0)
语法MqttClientApplicationMessage 类型公开以下成员。
构造函数| 名称 | 说明 | |
|---|---|---|
 | MqttClientApplicationMessage |
实例化一个默认的对象 Instantiate a default object |
属性| 名称 | 说明 | |
|---|---|---|
 | ClientId |
客户端的Id信息 Client Id information |
| CreateTime |
当前消息的生成时间 The generation time of the current message |
| IsCancelPublish |
获取或设置当前的消息是否取消发布，默认False，也就是发布出去 Get or set whether the current message is unpublished, the default is False, which means it is published |
| MsgID |
当前消息的ID信息，在Qos大于0的时候，才是有值的
|
| Payload |
有效载荷包含将被发布的应用消息。数据的内容和格式是应用特定的。 (继承自 MqttApplicationMessage。)The payload contains application messages to be published. The content and format of the data is application specific. |
| QualityOfServiceLevel |
这个字段表示应用消息分发的服务质量等级保证。分为，最多一次，最少一次，正好一次，只发不推送。 (继承自 MqttApplicationMessage。)This field indicates the quality of service level guarantee for application message distribution. Divided into, at most once, at least once, exactly once |
| Retain |
该消息是否在服务器端进行保留，详细的说明参照文档的备注 (继承自 MqttApplicationMessage。)Whether the message is retained on the server. For details, refer to the remarks of the document. |
| Topic |
主题名（Topic Name）用于识别有效载荷数据应该被发布到哪一个信息通道。 (继承自 MqttApplicationMessage。)The Topic Name is used to identify which information channel the payload data should be published to. |
| UserName |
当前的客户端的用户名 Username of the current client |
方法| 名称 | 说明 | |
|---|---|---|
| Equals | Determines whether the specified object is equal to the current object. (继承自 Object。) |
 | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (继承自 Object。) |
| GetHashCode | Serves as the default hash function. (继承自 Object。) |
| GetType | Gets the Type of the current instance. (继承自 Object。) |
| MemberwiseClone | Creates a shallow copy of the current Object. (继承自 Object。) |
| ToString | Returns a string that represents the current object. (继承自 MqttApplicationMessage。) |
扩展方法| 名称 | 说明 | |
|---|---|---|
 | ToJsonString |
获取当前对象的JSON格式表示的字符串。 (由 HslExtension 定义。)Gets the string represented by the JSON format of the current object. |
参见