如何使用spring-data-ldap认证ladp用户？

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-ldap</artifactId>
</dependency>

spring.ldap.urls=ldap://ldap.example.com:389
spring.ldap.base=dc=example,dc=com
spring.ldap.username=cn=admin,dc=example,dc=com
spring.ldap.password=adminpassword

@Entry(base = "ou=users", objectClasses = "inetOrgPerson")
public class User {
    @Id
    private Name dn;
    
    @Attribute(name = "cn")
    private String username;
    
    @Attribute(name = "userPassword")
    private String password;
    
    // 其他属性...
    
    // getter和setter方法...
}

public interface UserRepository extends LdapRepository<User> {
    User findByUsername(String username);
}

@Autowired
private UserRepository userRepository;

public boolean authenticate(String username, String password) {
    User user = userRepository.findByUsername(username);
    if (user != null && user.getPassword().equals(password)) {
        // 认证成功
        return true;
    } else {
        // 认证失败
        return false;
    }
}