Examples with AuthenticationPrincipal org.springframework.security.core.annotation.AuthenticationPrincipal used on opensource projects

Example 6 with AuthenticationPrincipal

use of org.springframework.security.core.annotation.AuthenticationPrincipal in project spring-security by spring-projects.

the class AuthenticationPrincipalArgumentResolver method resolvePrincipal.

private Object resolvePrincipal(MethodParameter parameter, Object principal) {
    AuthenticationPrincipal authPrincipal = findMethodAnnotation(AuthenticationPrincipal.class, parameter);
    String expressionToParse = authPrincipal.expression();
    if (StringUtils.hasLength(expressionToParse)) {
        StandardEvaluationContext context = new StandardEvaluationContext();
        context.setRootObject(principal);
        context.setVariable("this", principal);
        context.setBeanResolver(this.beanResolver);
        Expression expression = this.parser.parseExpression(expressionToParse);
        principal = expression.getValue(context);
    }
    if (isInvalidType(parameter, principal)) {
        if (authPrincipal.errorOnInvalidType()) {
            throw new ClassCastException(principal + " is not assignable to " + parameter.getParameterType());
        }
        return null;
    }
    return principal;
}