User user = (User) session. HttpServletRequest req = (HttpServletRequest) request Response.getOutputStream().print(failed.getMessage()) Ĭustom AuthenticationFilter check for auth info stored in session and pass to Securit圜ontext: public class AuthenticationFilter extends GenericFilterBean void doFilter( tStatus(HttpServletResponse.SC_UNAUTHORIZED) Res.getOutputStream().print("You are logged in as " + void unsuccessfulAuthentication( Req.getSession().setAttribute(UserSessionKey, user) // Simply put it in session readValue(req.getInputStream(), LoginUserDto.class) When I was looking for a solution I created a filter: void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException object My REST API works very well, but now I need to secure it. I don't want to use Basic authentication.Other resource will be accessible after authorization for all users.Some resources will be accessible only for users with administrator rights,.Some REST resources will be public - no need to authenticate at all,.I would like to manage token creation, checking validity, expiration in my own implementation. Token based authenticator - users will provide its credentials and get unique and time limited access token.There are so many options how to secure resources and how work with Spring security, I need to clarify if my needs are realistic. Listing 7.I know that securing REST API is widely commented topic but I'm not able to create a small prototype that meets my criteria (and I need to confirm that these criteria are realistic). It relies on the JJWT library to do the work, as seen in Listing 7. JWTTokenService is the place where the actual JWT token is handled. TokenService.java and JWTTokenService.java Login does the reverse: It takes a user name, grabs the user with userService, verifies that the password matches, then uses tokenService to create the token. If the token is good, findByToken uses UserService to get the actual user object. findByToken takes a token, then uses tokenService to verify its validity. The protected API and login calls (index.html) let token = null async function protectedAPI()īoth methods - findByToken and login - rely on TokenService and UserService. You can see the JS for handling these interactions in Listing 1. It also provides a simple log-in capability. This simple index.html file allows the user to click a button and see the message returned from the protected endpoint. This will give you a sense of how a JavaScript front end interacts with the server security. That is where the client lives in the form of a small index.html file. Spring Web will by default serve files in the resources/static folder. The front end with simple log-in capability There is also an index.html file serving the simple front end from /resources/static. To keep things as simple as possible and make it easier to get your mind around things, I’ve spurned Java best practice and put all of the classes you will use in a single package. In this case, a simple collection of users. A guide to creating a new, custom security expression with Spring Security, and then using the new expression with the Pre and Post authorize annotations. UserServiceImpl.java: The implementation of UserService.java.Used by TokenAuthenticationService to recover the user via the token info. UserService.java: An interface for finding users.UserController.java: The web controller that provides the log-in API.Used by UserController.java to handle the business logic of log-in and by TokenAuthenticationProvider to find users by token. UserAuthenticationService.java: A middleware service.User.java: A simple implementation of the Spring UserDetails interface.TokenService.java: Used by TokenAuthenticationService to create and verify JWT tokens.TokenAuthenticationService.java: The token-based implementation of UserAuthenticationService.TokenAuthenticationProvider.java: Supplied by Securit圜onfig.java to the AuthenticationManager to provide a way to recover the user in TokenAuthenticationFilter.TokenAuthenticationFilter.java: Responsible for checking for user auth info when secured resources are requested. Securit圜onfig.java: Responsible for configuring Spring Security.NoRedirectStrategy: Used in Securit圜onfig.java to avoid Spring Security’s default redirection behavior.M圜ontroller.java: The web controller that contains the protected endpoint.JWTTokenService.java: The implementation of TokenService, used by TokenAuthenticationService.JwtApplication.java: The main app file, created by Spring Boot.The class files involved in the sample app are listed below (linked to their sources).
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