public class IoTMqttClientConfig extends PersistentConnectConfig
appkey, channelHost, channelRootCrtFile, deviceName, deviceSecret, isCheckChannelRootCrt, isInitUpdateFlag, productKey, productSecret, receiveOfflineMsg, secureMode, securityGuardAuthcode| 构造器和说明 | 
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IoTMqttClientConfig()  | 
IoTMqttClientConfig(java.lang.String pk,
                   java.lang.String dn,
                   java.lang.String ds)  | 
checkVaild