Spring Ldap 分页

LDAP.search()当查询的数据较多时，当查询的数目较大时，会导致内存溢出，因此采用Ldap的分页进行查询

public class ChraUserService
{
@Autowired
SearchEmployeeLdapDao searchEmployeeLdapDao;
public void employeeinfo()
{
 PagedResultsCookie cookie=null;
 PagedResult list=null;
 SearchEmployeeLdapDao.Initldap();//初始化Ldap
 do {
   list=searchEmployeeLdapDao.searchlist(cookie); //获得查询分页的List
   cookie=list.getCookie();
   } while (list.getCookie().getCookie()!=null);//判断是否结束
 }
}

public class SearchEmployeeLdapDao
{
@Autowired
LdapTemplate ldapTemplate;//spring LDap dataSource
private AndFilter filter = null;
private SearchControls searchControls=null;
public void initldap()
{
ldapTemplate.setIgnorePartialResultException(true);
filter=new AndFilter(); //查询的过滤条件
filter.and(new EqualsFilter("objectclass", "user"));
filter.and(new LikeFilter("uid", "Tim*"));
searchControls = new SearchControls();
searchControls.setSearchScope( SearchControls.SUBTREE_SCOPE );
String[] s={"employeeNumber","uid","department","mail","title","thumbnailPhoto"}; //查询返回的字段
searchControls.setReturningAttributes(s);
}
public PagedResult searchlist(PagedResultsCookie cookie)
{
PagedResultsRequestControl control = new PagedResultsRequestControl(pagesize, cookie);
List<MemberBean> list= ldapTemplate.search( "", filter.encode(),searchControls, new ChraUserAttributesMapper(),control);
return new PagedResult(list, control.getCookie());
}

public class ChraUserAttributesMapper implements AttributesMapper
{
@Override
public MemberBean mapFromAttributes(Attributes attrs) throws NamingException {
NamingEnumeration<? extends Attribute> en = attrs.getAll();
while (en.hasMoreElements())
{
BasicAttribute object = (BasicAttribute) en.nextElement();
//业务逻辑
}
}

spring LDAP的xml配置文件

<beans>
<bean id="contextSource"
class="org.springframework.ldap.core.support.LdapContextSource">
<property name="url" value="***********************" />
<property name="base" value="*********************" />
<property name="referral" value="follow"/>
</bean>
<bean id="ldapTemplate"
class="org.springframework.ldap.core.LdapTemplate">
<constructor-arg ref="contextSource" />
</bean>