在Spring中如何从“< sec：authentication property =" principal.username" />"”中打印用户名和姓氏 [英] In Spring How to print user first name and last name from "<sec:authentication property="principal.username"/>"

问题描述

如何从打印用户名和姓？< sec：authentication property =principal.username/>

此 principal.username 仅打印用户ID。但我想在这里打印用户名和数据库的名字。可能吗？

This principal.username only prints user Id. But I want here to print the user first and last name from database. Is it possible?

推荐答案

我想你在谈论Spring Security。

I guess you are talking about Spring Security.

这里是我使用的解决方案：

Here is a solution I used:

创建一个将映射用户的类。它必须实现接口 org.springframework.security.core.userdetails.UserDetails ：

Create a class that will map your users. It have to implements the interface org.springframework.security.core.userdetails.UserDetails :

public class MyUserDetails implements UserDetails {
    private String username;
    private String password;

    private String firstname;
    private String lastname;

    public String getFirstname() {
        return firstname;
    }

    public String getLastname() {
        return lastname;
    }

    // Etc.
}

创建 org.springframework.security.core.userdetails.UserDetailsS​​ervice 的实现，它将从数据库加载您的用户：

Create an implementation of org.springframework.security.core.userdetails.UserDetailsService that will load your users from the database :

@Component
public class MyUserDetailsService implements UserDetailsService {
    @Autowired
    private MyUserDAO userDAO;

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        final MyUserDetails user = userDAO.getUserByUsername(username);
        if(user == null) {
            throw new UsernameNotFoundException("No user found for username '" + username +"'.");
        }
        return user;
    }
}

现在您必须告诉Spring Security使用您的服务从您的用户加载详细信息：

Now you have to tell Spring Security to use your service to load the details from your users :

<authentication-manager>
    <user-service id="myUserDetailsService"/>
</authentication-manager>

现在你应该可以使用< sec：authentication property = principal.firstname/> 和< sec：authentication property =principal.lastname/> 显示名字和姓氏当前用户。

Now you should be able to use <sec:authentication property="principal.firstname"/> and <sec:authentication property="principal.lastname"/> to display the firstname and the lastname of the current user.

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