Build a Basic CRUD App with Angular 5.0 and Spring Boot 2.0

Developer Blog Comments
121

Matt Raible

Check out Add Authentication to Your Angular PWA for information on how to deploy an app like this one. It shows how to deploy to Cloud Foundry and Heroku.

122

Bill Xiong

awesome post! this is the perfect tech stack so far.

123

Matt Raible

This typically happens when you forget to add (or register) the AuthInterceptor that adds the access token to the Authorization header.

124

tjm1706

When running with Openjdk/172 I get this error: InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty. Why?

125

tjm1706

When using Firefox, the app is not redirected to the okta login. When using Chrome, everything works ok. Why?

126

Matt Raible

Do you see any errors in your developer console? It should work just fine with Firefox.

127

Matt Raible

I’ve never seen this error before and I’m unsure what Openjdk/172 is. Are you using Java 1.7? This post requires you to use Java 8.

128

tjm1706

Yes, I use Openjdk 8, build(number) 172.
AND … thank you for the nice post!

129

tjm1706

Firefox had to think it over for a night … now it works! Just started the server and then the client.

130

Matt Raible

Does it work now, or are you still getting an error about the trustAnchors?

131

tjm1706

Nope, it does not work. It must be some general setup of OpenJDK 8.

132

Matt Raible

That stinks. I’ve created an issue for this problem. Please subscribe to the issue on GitHub if you’d like to be notified of updates.

133

global leads

Pretty! This was an incredibly wonderful post. Thank you for supplying this information.

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134

Javier Arroyo

Awesome blog, question how would I obtain info on the user in the spring boot backend up? I ran accros this: https://developer.okta.com/…

But that seems to return null for user when implemented

135

Matt Raible

There’s a similar question on our developer forums. You should be able to use something like the following when you have Spring Boot setup as a resource server.


@GetMapping("/")
public String index(@AuthenticationPrincipal Jwt jwt) {
    return String.format(“Hello, %s!”, jwt.getSubject());
}

In JHipster, we use the following logic in a UserService.java class:


public UserDTO getUserFromAuthentication(AbstractAuthenticationToken authToken) {
    Map<string, object=""> attributes;
    if (authToken instanceof OAuth2AuthenticationToken) {
        attributes = ((OAuth2AuthenticationToken) authToken).getPrincipal().getAttributes();
    } else if (authToken instanceof JwtAuthenticationToken) {
        attributes = ((JwtAuthenticationToken) authToken).getTokenAttributes();
    } else {
        throw new IllegalArgumentException(“AuthenticationToken is not OAuth2 or JWT!”);
    }
    User user = getUser(attributes);
    user.setAuthorities(authToken.getAuthorities().stream()
        .map(GrantedAuthority::getAuthority)
        .map(authority -> {
            Authority auth = new Authority();
            auth.setName(authority);
            return auth;
        })
        .collect(Collectors.toSet()));
    return new UserDTO(syncUserWithIdP(attributes, user));
}

We do this because Spring Security’s AbstractAuthenticationToken is the parent of both types of tokens (OAuth2AuthenticationToken for oauth2Login() and JwtAuthenticationToken for oauth2ResourceServer()).

Hope this helps!

136

Javier Arroyo

Yep definitely helped the first snippet did the trick for me i.e.:

@GetMapping("/")
public String index(@AuthenticationPrincipal Jwt jwt) {
return String.format(“Hello, %s!”, jwt.getSubject());
}