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laravel jwt login failed

May 26, 2023 pm 04:16 PM

When using the Laravel framework to implement JWT (JSON Web Token) login, if you encounter a login failure, it may be caused by the following factors.

  1. The Secret Key of JWT is not configured correctly

When using JWT for authentication, a Secret Key needs to be shared between the server and the client for encryption and decryption The generated JWT token. If the Secret Key is incorrect when configuring JWT, the token cannot be parsed correctly, causing login failure. Therefore, you need to confirm that the correct Secret Key is configured in the config/auth.php file.

  1. Mismatch between database model and table

When using Laravel for authentication, you need to specify the user model to be authenticated, and the database corresponding to the model surface. A mismatch between these two will cause an error when querying the database, resulting in a failed login. At this point, you need to check whether the mapping between the database model and the table is correct, and confirm whether the table name is consistent with expectations.

  1. JWT token invalidation

Since the JWT token has a certain expiration time by default, if the user logs in without operating for a long time, it may cause the The card is invalid and the login fails. At this time, you need to confirm that the correct expiration time is set when generating the JWT token, and consider adding the function of refreshing the token.

  1. Guard not set up correctly

In Laravel, Guard is used to determine which user credentials provider should be used to authenticate the user. If Guard is not set up correctly, it will result in the user's identity not being correctly authenticated, and thus the login being unsuccessful. You need to check whether the Guard name is consistent with the one in the auth.php configuration file.

To sum up, when JWT login fails, you need to check the above four factors and make corresponding adjustments according to the specific circumstances of the error. Only by checking and eliminating erroneous factors can the effectiveness of JWT authentication be ensured, thereby ensuring the security and stability of the system.

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