Help Center > > API Reference> Northbound Java SDK API Reference> Service API List> Secure Application Access> Authentication

Authentication

Updated at: Aug 28, 2019 GMT+08:00

Typical Scenario

This API is called by an NA for access authentication when the NA accesses open APIs of the IoT platform for the first time. After the authentication of the NA expires, the NA must call this API to perform authentication again so that the NA can continue to access open APIs of the IoT platform.

API Function

This API is used by an NA to get authenticated before accessing open APIs of the IoT platform for the first time.

Note

The authentication API is the prerequisite for calling other APIs. Except the authentication API itself, other APIs must use the accessToken obtained by the authentication API.

If the accessToken is obtained for multiple times, the previous accessToken is invalid and the last accessToken obtained is valid. Do not obtain the accessToken through concurrent attempts.

API Description

1
AuthOutDTO getAuthToken() throws NorthApiException

Class

Authentication

Parameter Description

The application ID and secret use the values of Methods of the ClientInfo Class in the NorthApiClient class.

Return Value

AuthOutDTO

Parameter

Type

Description

scope

String(256)

Indicates the application permission scope, that is, the scope of IoT platform resources that can be accessed using the accessToken. This parameter has a fixed value of default.

tokenType

String(256)

Indicates the type of the accessToken. This parameter has a fixed value of bearer.

expiresIn

Integer(256)

Indicates the validity time for the IoT platform to generate and return the accessToken, in seconds.

accessToken

String(256)

Indicates the authentication parameter that is used to access APIs of the IoT platform.

refreshToken

String(256)

Indicates the authentication parameter that is used to update the accessToken. The validity period of this parameter is 1 month.

Error Code

HTTP Status Code

Error Code

Error Description

Remarks

400

100449

The device is freezed cant operate.

The user does not have the operation permission.

Recommended handling: Check whether the user corresponding to appId has the permission to call the API.

400

102202

Required Parameter is null or empty.

Mandatory fields cannot be left blank.

Recommended handling: Check whether the mandatory parameters in the request are set.

401

100208

AppId or secret is not right.

appId or secret is incorrect.

Recommended handling:

  • Check whether appId and secret are correct. Specifically, check for new or missing characters.
  • Check whether the IP address in the request path is correct.

500

50252

Internal server error.

An internal server error occurs.

Recommended handling: An internal error occurs on the IoT platform. Contact IoT platform maintenance personnel.

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