手动获取AuthenticationManager的实例

问题描述

我正在尝试实现以下内容，但是我的authenticationManager实例抛出以下异常，并且未自动接线.如何从Spring手动获取它的实例?我没有使用spring控制器，而是在使用JSF请求作用域bean.当容器尝试自动连接authenticationManager时，在运行时出现以下异常. requestCache很好.我不明白为什么我有两个实例...

I'm trying to implement the below, but my authenticationManager instance throws the below exception and is not autowired. How do I get an instance of it from Spring manually? I'm not using a spring controller, I'm using a JSF request scoped bean. I get the below exception at runtime when the container tries to autowire the authenticationManager. The requestCache comes in fine. I don't understand why I have two instances...

config:

<authentication-manager>
        <authentication-provider user-service-ref="userManager">
                <password-encoder ref="passwordEncoder" />
        </authentication-provider>
    </authentication-manager>

@Controller
public class SignupController
{

    @Autowired
    RequestCache requestCache;

    @Autowired
    protected AuthenticationManager authenticationManager;

    @RequestMapping(value = "/account/signup/", method = RequestMethod.POST)
    public String createNewUser(@ModelAttribute("user") User user, BindingResult result,  HttpServletRequest request, HttpServletResponse response)
    {
        //After successfully Creating user
            authenticateUserAndSetSession(user, request);

        return "redirect:/home/";
    }

    private void authenticateUserAndSetSession(User user,
        HttpServletRequest request)
    {
        UsernamePasswordAuthenticationToken token = new UsernamePasswordAuthenticationToken(
                user.getUsername(), user.getPassword());

        // generate session if one doesn't exist
        request.getSession();

        token.setDetails(new WebAuthenticationDetails(request));
        Authentication authenticatedUser = authenticationManager.authenticate(token);

        SecurityContextHolder.getContext().setAuthentication(authenticatedUser);
    }

}

推荐答案

首先，为您的AuthenticationManager

<authentication-manager alias="authenticationManager">
   ...
</authentication-manager>

第二，自动接线时请使用限定符:

Second, use qualifier when auto-wiring:

@Autowired
@Qualifier("authenticationManager")
protected AuthenticationManager authenticationManager;

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