This post will walk readers through the process of creating a JWT token and provide step-by-step, straightforward instructions for authenticating and authorizing it. The processes listed below will be used for the generation, authentication, and authorization of JWT tokens.
- WebAPI Application for ASP.Net Core
- Include the necessary packages
- In the app’s settings, add Key, Issuer, and Audience.cs
- Register JWT Token in Program.cs file for Authentication.
- Model creation (UserModel)
- Make a Login API Controller (token generation and user authentication)
- With the product controller, create a product web API project
- Use Token to test the API endpoint in Postman
1. Include the ASP.Net Core API program
Launch Visual Studio 2022, choose ASP.Net Core Web API from the list of projects, and then click Next.
Name the project and solution as desired, then choose the framework.Create Net 8.0.
2. Include Nuget Packages
Using the NuGet package manager, add the following packages.
Microsoft.AspNetCore.JwtBearer.Authentication System.IdentityModel.Tokens.Jwt Microsoft.IdentityModel.Tokens
3. Adjust the appsettings option.JSON
Add the following Key, Issuer, and Audience after opening appsetting.json.
4. Register the JWT token for Authentication in the Program.cs file
5. Create Models (UserModel)
Add a new folder with the model name and create UserModel.
6. Create LoginAPI Controller (Authenticate user and generate token)
Add a new Empty API controller name “LoginController” in the controller folder.
Here, it creates one Post Action method for Login and two methods for Authenticating the user credentials and Generates the token (if a user is authenticated).
7. Create a Web API project with a Product controller to authorize getting Product Details
Add NuGet Packages
Add the following packages from the NuGet package manager.
- Microsoft.AspNetCore.Authentication.JwtBearer
- Microsoft.IdentityModel.Tokens
- System.IdentityModel.Tokens.Jwt
Create a get method to get the product list.
add jwt authentication in the program. cs and key in appsettings.json.
8. Test the API endpoint in Postman with Token
Run the application and give the value of the Username and Password.
Copy the URL, paste it into Postman, copy the token, and paste it into the bearer token.
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