Secure Spring Boot Application with JWT | Part 7 End

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Secure Spring Boot Application with JWT

For this last part of Secure Spring Boot Application with JWT, in the controller I have created two endpoints as GET and POST. 

Generate Token

In generateToken method you can see AuthorizeReq is pass with request body. After validation generated token has returned.

If the user is authenticated and authorized person then user redirect to the Welcome page.

In application.properties

I have create Postgres DB as local Database and set connection properties like so:

Local Postgres Database

I have created local database by using Postgres like so.

I have create username/password in main class, when start running project, then the table will auto generated in the local Database.

Testing

In this section we are going to test our application whether it works fine or not. I have used Postman for this, but you can use any API platform like Postman, Insomnia.

First we check “/authenticate” endpoint.

We need to provide credentials in the body, then we can send the request. After that you can see a toke is generated successfully. This token is encoded token.

eyJhbGciOiJIUzI1NiJ9.eyJzdWIiOiJraG1lcnNpZGUiLCJpYXQiOjE2NTg4Mzk4NzUsImV4cCI6MTY1ODkyNjI3NX0.MsJFQeCS0AhQQwxmBpt2qYP9blD16GRcuoPDSdkpbuU

You can decode JWT from their official site https://jwt.io/. when we paste generated token encoded area you can see all the details in the decode area. you can see the algorithm in the HEADER section that used to encode. You can see all the data in the PAYLOAD section.

We need to send GET request here. You should provide the token that we generated previously, you can provide it in the header section. Remember, you should provide your token as Bearer token. 

If its success you will able to see the welcome massage. That means our authorization process is working fine.

I think you can get better understand about how JWT is working from these videos.

Git: https://github.com/Yuth-Set/Securing-Spring-Boot-with-JWT

Watch Full video of the last part:

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