如何使用Spring4.0配置ldap

<dependencies>
  <dependency>
    <groupId>org.springframework.ldap</groupId>
    <artifactId>spring-ldap-core</artifactId>
    <version>2.3.3.RELEASE</version>
  </dependency>
</dependencies>

dependencies {
  implementation 'org.springframework.ldap:spring-ldap-core:2.3.3.RELEASE'
}

<ldap:context-source id="contextSource"
    url="ldap://localhost:389/dc=example,dc=com"
    base="ou=users"
    username="cn=admin,dc=example,dc=com"
    password="password" />

<bean id="ldapTemplate" class="org.springframework.ldap.core.LdapTemplate">
    <constructor-arg ref="contextSource" />
</bean>

@Autowired
private LdapTemplate ldapTemplate;

public void searchUsers() {
    List<String> result = ldapTemplate.search(
        QueryBuilder.query().where("objectclass").is("person"),
        new AttributesMapper<String>() {
            public String mapFromAttributes(Attributes attrs) throws NamingException {
                return attrs.get("cn").get().toString();
            }
        });

    for (String cn : result) {
        System.out.println(cn);
    }
}