「アクセストークン」を発行すると、 {"returnCode":"99","returnMessage":"UnexpectedError"} が得られました
Hello,
It seems that I need an access token to use LINE WORKS API 2.0, but I haven't been able to get it.
I issued a Service Account from the Developer Console and generated a JWT using the account credentials. However, when I try to issue an access token, I get an "Invalid JWT value" response. I've checked the token generation procedure but it doesn't seem to work. .
I try to get access token with below Request URL
Request URL: https://auth.worksmobile.com/oauth2/v2.0/token
I was doing the following service account authentication in PHP
$headers_encoded = $this -> base64url_encode ( json_encode ( $headers ));
$payload_encoded = $this -> base64url_encode ( json_encode ( $payload ));
$signature = hash_hmac ( 'sha256' , " $headers_encoded . $payload_encoded " , $secret );
$signature_encoded = $this -> base64url_encode ( $signature );
$jwt = " $headers_encoded . $payload_encoded . $signature_encoded " ;
However, the authentication server returns a 400 error response
{
"error_description" : "JWT token is not valid." ,
"error" : "invalid_request" ,
"error_uri" : "See document on https://developers.worksmobile.com/reference/authorization-sa"
}
I checked the validity of the JWT at https://jwt.io/ which also shows an invalid signature.
Content:
assertion= eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.{JSON Claim set BASE64 encoded}.{signature BASE64 encoded}
grant_type= urn:ietf:params:oauth:grant-type:jwt-bearer
client_id=MY_CLIENT_ID
client_secret=MY_CLIENT_SECRET
scope=bot
(JSON claim set, signature, private key are real)
Thank you very much.
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まだ、解決できませんか？
今すぐ実際に使用しているLINE WORKSユーザーに質問してみましょう。