修改为从数据库访问

这里将之前的直接返回一个用户，修改为从数据库访问并返回

public class CustomUserService implements UserDetailsService {
    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        try {
            com.example.demo.model.userInfo.User userDb = userService.getUserByUserCode(userName);
            if (userDb == null)
                throw new UsernameNotFoundException("用户名或密码不正确");
            String encodePassword = userDb.getPassword();
            //String encodePassword = new BCryptPasswordEncoder().encode(password);
            List<GrantedAuthority> authorities = getAuthorities(userName);
            MyUser user = new MyUser(userName, encodePassword, authorities);
            user.setRealName(userDb.getUserName());
            return user;
        } catch (Exception e) {
            throw new UsernameNotFoundException("用户名或密码不正确");
        }
    }
    private List<GrantedAuthority> getAuthorities(String userName) throws Exception {
        List<GrantedAuthority> authorities = new ArrayList<GrantedAuthority>();
        //authorities.add(new SimpleGrantedAuthority("role_user"));
        //data from database
        List<Role> roles = roleService.getRolesByUserCode(userName);
        if (roles != null) {
            roles.forEach(r -> authorities.add(new SimpleGrantedAuthority(r.getRoleName())));
        }
        return authorities;
    }
}
}

userService 和 roleService 自己自由选择数据库访问技术实现即可。

自定义 User 类

另外，这里扩展了 User 类，新增了 realName 昵称

public class MyUser extends User {
    private String realName;
    public MyUser(String username, String password, Collection<? extends GrantedAuthority> authorities) {
        super(username, password, authorities);
    }
    public String getRealName() {
        return realName;
    }
    public void setRealName(String realName) {
        this.realName = realName;
    }
    public MyUserDTO toMyUserDTO() {
        return new MyUserDTO(this.realName, this.getUsername());
    }
    public class MyUserDTO {
        private String realName;
        private String userName;
        public String getRealName() {
            return realName;
        }
        public void setRealName(String realName) {
            this.realName = realName;
        }
        public String getUserName() {
            return userName;
        }
        public void setUserName(String userName) {
            this.userName = userName;
        }
        public MyUserDTO(String realName, String userName) {
            this.realName = realName;
            this.userName = userName;
        }
    }
}

测试

修改数据库的用户信息，验证是否能正常登录