Is it possible to retrieve roles from ServerWebExchange?

php editor Baicao answers your question: "Is it possible to retrieve roles from ServerWebExchange?" The answer is yes. In Spring WebFlux, the currently requested role information can be obtained through the ServerWebExchange object. ServerWebExchange is one of the core classes of the Spring WebFlux framework, which represents the context of HTTP requests and responses. Through the ServerWebExchange object, you can access information such as the request path, request headers, and request parameters. To obtain role information, you can obtain the currently requested user object through the getUser() method of the ServerWebExchange object to obtain the user's role information. In this way, you can perform corresponding permission control and business processing based on the user's role.

Question content

I can retrieve the principal name from the org.springframework.web.server.serverwebexchange instance.

exchange.getprincipal().subscribe(principal -> /* do something with it */);

Can I also retrieve the principal's role? The java.security.principal class (unlike userdetails) only provides a name string (getname())

Use case: Let's say I want to write a gatewayfilter that takes into account the current user's role and changes the exchange:

(exchange, chain) -> /* some filtering logic */

Workaround

I cast it to authentication. In my case, the principal was actually usernamepasswordauthenticationtoken, which is the authentication subtype

((Authentication) principal).getAuthorities()

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