Spring Security’s default behavior is easy to use for a standard web application. It uses cookie-based authentication and sessions. Also, it automa...
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Great Article! Good job!
A quick question: Why here are you checking the header and not the authentication object?
I mean, you already checked the header in
getAuthentication()
Like this, should also work, or not? :D
Again, great article!
Well, you're right. My bad 😀
I'll update the code. Thanks for your attention 🙂
For starters, great introduction to JWT security! But i was looking around to see if i could authenticate users with a database instead of the in memory database that is used by default. Do you happen to have an example for this?
EDIT:
Few minutes after i asked the question i stumbled upon the answer...
for those interested i changed this:
to this
password encoder is just a constructor for a BcryptEncoder, and the userdetail service provides a method to load by username from the repository, and get authorities.
Hi . Could you please explain where you got the JWT Token From?
When doing the operation below
Hi. You can find JWT in HTTP header Authorization in response from
/api/authenticate
.But from your post it says
<Response body is empty>
This response body should be the token right?
Yes, response body is empty since JWT is sent via HTTP header.
I'll update that code snipped since it's bit confusing.
This is a great explanation! I have been trying to get this to work for weeks and now I get it!
Thank you! I'm writing another article about token refreshing so stay tuned :)
But i'm curious to know how to use UserDetails ?here ?
Hello ! Im waiting for your article about implementing token refreshing.Any plans to do in the future ?
Hello Kivimango. I'm sorry that it takes so long but I have too much work to do so the article is still a draft. But I promise I'll try to complete the article asap.
I already started with code updates in a separate branch, so you can check the progress there
Awesome! Another thing that I have been trying to understand is how to extend what you have to a user repository.
I have like 3 weeks looking for a clear explanation of the basic jwt integration with spring security..
Great Job!
Thank for the tutorial. But I don't really agree with your coding style, should be more careful thought. Like the code below, the authentication object should not get from the first place.
Thank you for the tutorial. I was wondering how can i implement the @PreAuthorize annotation and the whole roles thing in my spring security(I've looked into other tutorials but it didn't help). Thank you for your time.
Hey! Great article, helped me a lot!
Hey just wanted to let you know this was sooooo helpful! Thank you for your time and talent at teaching!
If anyone else is struggling with the seemingly high complexity of the spring security framework, I have a few things to add that I've learned in my struggles:
also if it helps anyone:
if you want to put the username/id whatever you are storing as the subject in jwt onto the request (so that your secured endpoints know which user is accessing):
in AuthorizationFilter#doFilterInternal(): request.setAttribute("username", authentication.getPrincipal());
in ur controllers: public @RequestBody ReturnType yourMethod(@RequestAttribute("username") String username) { ... }
Hello! First of all really nice guide!
I tried to implement it, i did exactly as you did but i keep getting this error starting on the method authenticationManager.authenticate(authenticationToken) in class JwtAuthenticationFilter:
java.lang.NoSuchMethodError: 'boolean org.springframework.security.crypto.password.PasswordEncoder.upgradeEncoding(java.lang.String)
What could it be?
Very nice!
Thank you :)
hmmm could you tell me how to this implementation use refresh_token? for example storage this refresh in database. And when token is expired check the refresh_token?
I have similar implementation in my project but I want to extend with refresh_token.
In JwtAuthenticationFilter, method attemptAuthentication, the authentication data (username and password) are got from request URL. I need that the username and password got from request body (example JSON: { "username": "john", "password":"mysecret" }). How can I made this?
It's very simple. You just need to update
JwtAuthenticationFilter
class to parse received JSON data.Example:
Great article, clean and straightforward. Awesome!
How exactly are the roles checked in this scenario? Suppose you have and endpoint that has in configuration a restriction: hasRole("ADMIN"). How would the authorization filter work then?
JwtAuthenticationFilter
saves user data and roles into JWT when the user logs in.JwtAuthorizationFilter
parses the JWT during every HTTP request and load user data and roles from JWT into Spring's security context.hasRole("ADMIN")
reads roles from security context and allows request only if there is"ROLE_ADMIN"
.In my example, roles and user are defined in
SecurityConfiguration
(in-memory user).I still see set-cookie in response. And each time request
/api/private
, it will create a new JSESSIONIDset-cookie: JSESSIONID=...; Path=/; HttpOnly
It should not create JSESSIONID cookie. Do you have a git repository with your code? We can check it together :)
Great Article! it works fine on Postman everything succeeds but it keeps throwing 403 error on Angular 8 any fixes I can apply?
Very nice! Thank you
Why do you use "var" ?
It's valid syntax since Java 10. I also think that
var
is more elegant than full type declaration (it doesn't mean that Java is now dynamically typed).Hi Could you please explain where you get the JWT Token from ? the one that you use for calling the API End Point .
Thanks!
But sending the username and password in url localhost:8080/api/authenticate?us... , isn't it a security flaw itself?
For example purposes it's fine. Also, if you're using HTTPS then no one will see query params.
You can send username and password as standard
POST
data with content-typeapplication/x-www-form-urlencoded
and then those params will not be part of the URL.Super Good. Was struggling to understand this for a week :)
tnx
Do I need to enable CSRF protection on an api?
Hi,
Instead of creating a Servlet Filter, I think you should go the Spring way by creating a org.springframework.security.web.context.SecurityContextRepository implementation.
Great post thank to u,
can you integrate social login(google, Facebook ...) with the code.
thanks