Spring Boot + Spring Security + JWT from scratch - Java Brains
Why Stack Overflow recommends it
Stack Overflow users link it as the tutorial they followed when they hit problems implementing JWT auth in Spring Boot, including Kotlin ports, signature algorithm errors, and endpoint whitelisting.
Recommended by 4 people across 4 different months, 2019 to 2023.
What it is
A 39-minute tutorial from Java Brains that builds a new Spring Boot project with Spring Security and adds JWT-based authentication. It creates an endpoint that authenticates a user and returns a JWT, then adds a filter that checks the Authorization header and authorizes requests carrying a valid token.
What people said
Recommends mneri · 2019-11 · Stack Overflow · on “Expire the JWT Token on logout in Spring Boot REST API”
On the same line as @RonOhRob I would suggest the jti (JWT ID) [LINK] claim. This claim provides a unique identifier for the JWT. Your JWT payload would look like: { "iss": "example.com", "iat": "1300819080", "exp": "1300819380", "jti": "123e4567-e89b-42d3-a456-556642440000", "username": "mneri" } When a JWT is manually expired you insert the jti into a blacklist. The value should persist into the table until the natural expiration of the token. Now, for each request should also check if jti inside the table; if it's found the access is denied. If a user wants to expire all of his tokens there's another simple strategy involving the iat (Issued At) [LINK] claim: add a deny_before field to th
Recommends Дамир Эсенов · 2020-03 · Stack Overflow · on “Undefined SignatureAlgorithm.HS256, jwt authorization in spring boot”
i was doing jwt authorization during this tutorial [this video] . I don't know why, but my Intellij cannot understand what it is "HS256" in 'createToken' method. Thanks for help! JwtUtil.java import com.sun.org.apache.xml.internal.security.algorithms.SignatureAlgorithm; import io.jsonwebtoken.Claims; import io.jsonwebtoken.Jwts; import org.springframework.security.core.userdetails.UserDetails; import org.springframework.stereotype.Service; import java.util.Date; import java.util.HashMap; import java.util.Map; import java.util.function.Function; @Service public class JwtUtil { private String SECRET_KEY = "secret"; public String extractUsername(String token) { return extractClaim(token, Claims::get
Recommends Ruchira Nawarathna · 2020-12 · Stack Overflow · on “One type argument expected for interface Function <out R>”
I am following a tutorial [this video] to implement JWT authentication with spring boot and java. But in my case I want to do it with Kotlin. I am able to generate a jwt token but having issues when extracting claims from a jwt token. In this tutorial there is a generic function to extract claims from a token. public <T> T extractClaim(String token, Function<Claims, T> claimsResolver { final Claims claims = extractAllClaims(token); return claimResolver.apply(claims); } private Claims extractAllClaims(String token) { return Jwts.parser().setSigningKey(KEY).parseClaimsJws(token).getBody(); } public String extractUsername(String token) { return extractClaim(token, Claims::getSubject); } I have writt
Recommends Ruhul Amin · 2021-03 · Stack Overflow · on “How does authentification with JWT work in Spring Boot”
Here is few point JWT is designed to work: Clients logs in by sending their credentials to the identity provider The identity provider verifies the credentials; if all is OK, it retrieves the user data, generates a JWT containing user details and permissions that will be used to access the services, and it also sets the expiration on the JWT (which might be unlimited). Client stores the JWT for a limited or unlimited amount of time, depending on the expiration set by the identity provider. Client sends the stored JWT in an Authorization header for every request to the service provider. For each request, the service provider takes the JWT from the Authorization header and decrypts it, if need
Cites software_dev · 2020-03 · Stack Overflow · on “Infinite loop when authenticating user: Implementation of JWT with Spring Security”
EDIT: I am now getting a 403 forbidden, access denied on all requests besides register and login I am testing out my endpoints for an application after having implemented JWT authentication and spring security based on this article: [LINK] Similarly, my other sources of inspiration include: [this video] Registration and login of a user are functional, but when I perform subsequent requests requiring the JWT in the header, I get an infinite loop/recursion and a stack overflow error. However, when I input a non-existing JWT on purpose, it throws back the appropriate error message and works well. So the problem is with successfully authenticating a valid JWT. After looking online at different stack
Cites Will · 2020-03 · Stack Overflow · on “SpringBoot UserDetailsService loadUserByUsername Method Never Called with custom WebSecurityConfigurerAdapter”
I'm following the tutorial in this video: [this video] My code is at the state of the 7:30 mark. For whatever reason, I can't seem to get the SecurityConfigurer.java Class to recognize my custom UserDetailsService class called MyUserDetailsService.java . The expected behavior is that when I go to the /hello endpoint I've specified in HelloResource.Java class, a login page should be generated. I should be able to login to the webpage with the loadUserByUsername method's hard-coded return User value with the username and password of "foo". No matter what change I make though, it always seems that the loadUserByUsername method is not called (I've proven this with breakpoints/print statements). This
Cites Yonatan Karp-Rudin · 2020-04 · Stack Overflow · on “JWT refresh token with jjwt”
recently I've started my project in SpringBoot and Kotlin and I wanted to create user management system. After a few searches, I've looked at this [this video] video regarding the implementation of JWT tokens for the authentication process. Everything seems to work perfectly, besides the fact that currently, I need to pass the username and password in each authentication - which means that the client calling the API needs to either store it or ask for it each time. After looking in this [LINK] article it seems that option 3 is actually what I'm looking for. From what I'm understanding the process of authentication should be as follow: a client calls the authentication method 2 tokens are returned
Cites sandeep srivastav vaddiparthy · 2020-04 · Stack Overflow · on “SpringBoot Security Does not Whitelist Login Endpoints”
I have been trying to get a sample SpringBoot app up and running along with SpringBoot Security+JWT helping me handle the security situation. (The source code can be found here: [LINK] ) I have followed [this video] tutorial religiously and setup the entire SpringBoot Security configuration. Now, I achieved half of my goal which is to add security but I am unable to whitelist the Login and Register endpoints. My WebSecurityConfig is given below. It has the configuration to whitelist the login and register endpoints but it does not work. Can someone take a look and let know what is going wrong here. @EnableWebSecurity class WebSecurityConfig extends WebSecurityConfigurerAdapter { @Autowired privat
Cites Leonard-Riccardo Wecke · 2021-10 · Stack Overflow · on “How to connect Woocommerce WordPress plugin to a Spring Boot API based on Spring Security Oauth2 JWT?”
I am a Spring Developer trying to figure out how to connect a WordPress WooCommerce Website to my REST Spring boot Service. I haven't worked with WordPress, so there are a lot of unknown unknowns for me there. I am in collaboration with another developer on the WordPress side of things, trying to solve this issue, but we are a little lost. Are there Best Practices for a WordPress website to access the Spring boot Oauth2 API (including JWT Token delivery Service) ? CONCRETE DESCRIPTION OF MY SITUATION: State right now (working): Someone orders a Product on the WooCommerce website and the order status is set to processing. The goal : WordPress WooCommerce Backend calls the Spring boot API to s
Cites Tinotenda Mutadza · 2023-03 · Stack Overflow · on “Spring boot - /authenticate endpoint won't return a JSON Web Token”
I've been working on this for a while and the video I used to help me is from 2019 so it's a bit outdated but I thought that I could work through the problems. The program runs but when I try using postman I get a 401 unauthorized error: Here is the jwtutil.java file code: package com.stdbankjwtauth.authsystem.util; import java.util.Map; import java.util.function.Function; import java.util.Date; import java.util.HashMap; import org.springframework.security.core.userdetails.UserDetails; import org.springframework.stereotype.Service; import io.jsonwebtoken.Claims; import io.jsonwebtoken.Jwts; import io.jsonwebtoken.SignatureAlgorithm; @Service public class JwtUtil { private String SECRET_KEY =