在Bean中获取用户信息
Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
if (!(authentication instanceof AnonymousAuthenticationToken)) {
String currentUserName = authentication.getName();
return currentUserName;
}
Spring Security
框架提供了多种 AuthenticationToken
的派生类,根据自己的应用场景,可以对 SecurityContextHolder
里面的 AuthenticationToken
进行类型转换,如下:
UsernamePasswordAuthenticationToken authenticationToken = (UsernamePasswordAuthenticationToken) SecurityContextHolder.getContext().getAuthentication();
// details里面存放了当前登录用户的详细信息
User userDetails = (User) authenticationToken.getDetails();
PS. AuthenticationToken的类型转换同样适用于下面提到的Principal类。
在Controller中获取用户信息
- 通过Principal参数获取:
import java.security.Principal;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
@RestController
public class SecurityController {
@GetMapping(value = "/username")
public String currentUserName(Principal principal) {
return principal.getName();
}
}
- 通过Authentication参数获取:
import org.springframework.security.core.Authentication;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
@RestController
public class SecurityController {
@GetMapping("/username")
@ResponseBody
public String currentUserName(Authentication authentication) {
return authentication.getName();
}
}
- 通过HttpServletRequest获取
import java.security.Principal;
import javax.servlet.http.HttpServletRequest;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
@RestController
public class SecurityController {
@GetMapping("/username")
public String currentUserNameSimple(HttpServletRequest request) {
Principal principal = request.getUserPrincipal();
return principal.getName();
}
}
通过 Interface 获取用户信息
注意:IAuthenticationFacade 这个接口在springboot2.1.0中已不存在了
通过 Interface 获取其实和第一种在 Bean 中获取用户信息是一样的,都是访问 SecurityContextHolder 获取的,只是进行了封装。
public interface IAuthenticationFacade {
Authentication getAuthentication();
}
@Component
public class AuthenticationFacade implements IAuthenticationFacade {
@Override
public Authentication getAuthentication() {
return SecurityContextHolder.getContext().getAuthentication();
}
}
下面是使用方法:
@RestController
public class SecurityController {
@Autowired
private IAuthenticationFacade authenticationFacade;
@GetMapping("/username")
public String currentUserNameSimple() {
Authentication authentication = authenticationFacade.getAuthentication();
return authentication.getName();
}
}
在JSP页面中获取用户信息
要使用 Spring Security 的标签特性,首先要在 JSP 页面引入 Security 的 tag:
<%@ taglib prefix="security" uri="http://www.springframework.org/security/tags" %>
通过以下方式可以获取到当前登录用户:
<security:authorize access="isAuthenticated()">
authenticated as <security:authentication property="principal.username" />
</security:authorize>
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