我有一个使用Spring Security的Spring MVC web应用程序。我想知道当前登录用户的用户名。我正在使用下面给出的代码片段。这是公认的方式吗?
我不喜欢在这个控制器中调用静态方法——恕我直言，这违背了Spring的全部目的。有没有一种方法来配置应用程序有当前的SecurityContext，或当前的认证，注入代替?
@RequestMapping(method = RequestMethod.GET)
public ModelAndView showResults(final HttpServletRequest request...) {
final String currentUser = SecurityContextHolder.getContext().getAuthentication().getName();
...
}
当前回答
我会这样做:
request.getRemoteUser();
其他回答
我得到认证的用户 HttpServletRequest.getUserPrincipal ();
例子:
import javax.servlet.http.HttpServletRequest;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.web.authentication.preauth.RequestHeaderAuthenticationFilter;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.support.RequestContext;
import foo.Form;
@Controller
@RequestMapping(value="/welcome")
public class IndexController {
@RequestMapping(method=RequestMethod.GET)
public String getCreateForm(Model model, HttpServletRequest request) {
if(request.getUserPrincipal() != null) {
String loginName = request.getUserPrincipal().getName();
System.out.println("loginName : " + loginName );
}
model.addAttribute("form", new Form());
return "welcome";
}
}
对于我写的上一个Spring MVC应用程序，我没有注入SecurityContext holder，但我确实有一个基本控制器，我有两个实用程序方法与此相关…isAuthenticated() & getUsername()。在内部，它们执行您所描述的静态方法调用。
至少在以后需要重构时，它只在一个地方。
我同意必须为当前用户查询SecurityContext很糟糕，这似乎是一种非常非spring的处理这个问题的方式。
我写了一个静态的“助手”类来处理这个问题;它是脏的，因为它是一个全局和静态的方法，但我认为如果我们改变任何与安全相关的东西，至少我只需要改变一个地方的细节:
/**
* Returns the domain User object for the currently logged in user, or null
* if no User is logged in.
*
* @return User object for the currently logged in user, or null if no User
* is logged in.
*/
public static User getCurrentUser() {
Object principal = SecurityContextHolder.getContext().getAuthentication().getPrincipal()
if (principal instanceof MyUserDetails) return ((MyUserDetails) principal).getUser();
// principal object is either null or represents anonymous user -
// neither of which our domain User object can represent - so return null
return null;
}
/**
* Utility method to determine if the current user is logged in /
* authenticated.
* <p>
* Equivalent of calling:
* <p>
* <code>getCurrentUser() != null</code>
*
* @return if user is logged in
*/
public static boolean isLoggedIn() {
return getCurrentUser() != null;
}
在Spring 3+中，您有以下选项。
方案一:
@RequestMapping(method = RequestMethod.GET)
public String currentUserNameByPrincipal(Principal principal) {
return principal.getName();
}
选择二:
@RequestMapping(method = RequestMethod.GET)
public String currentUserNameByAuthentication(Authentication authentication) {
return authentication.getName();
}
选项3:
@RequestMapping(method = RequestMethod.GET)
public String currentUserByHTTPRequest(HttpServletRequest request) {
return request.getUserPrincipal().getName();
}
选项4:花哨的一个:查看更多细节
public ModelAndView someRequestHandler(@ActiveUser User activeUser) {
...
}
我使用@Controller类中的@AuthenticationPrincipal注释以及@ controlleradvisor注释。例:
@ControllerAdvice
public class ControllerAdvicer
{
private static final Logger LOGGER = LoggerFactory.getLogger(ControllerAdvicer.class);
@ModelAttribute("userActive")
public UserActive currentUser(@AuthenticationPrincipal UserActive currentUser)
{
return currentUser;
}
}
其中UserActive是我用于已登录用户服务的类，并且扩展自org.springframework.security.core.userdetails.User。喜欢的东西:
public class UserActive extends org.springframework.security.core.userdetails.User
{
private final User user;
public UserActive(User user)
{
super(user.getUsername(), user.getPasswordHash(), user.getGrantedAuthorities());
this.user = user;
}
//More functions
}
真的很容易。
