创建ldap长连接

[table]
|连接LDAP数据库CRUD，包括分页查询的持久层代码|
[/table]

package com.scnu.ytxt.persistence.sqlmapdao.user;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import javax.naming.directory.Attributes;
import javax.naming.directory.SearchControls;

import org.springframework.ldap.AttributesMapper;
import org.springframework.ldap.CollectingNameClassPairCallbackHandler;
import org.springframework.ldap.LdapTemplate;
import org.springframework.ldap.support.DistinguishedName;
import org.springframework.ldap.support.control.PagedResultsRequestControl;
import org.springframework.ldap.support.filter.AndFilter;
import org.springframework.ldap.support.filter.EqualsFilter;

import com.scnu.ytxt.attribute.AttributeBuilder;
import com.scnu.ytxt.attribute.AttributeFather;
import com.scnu.ytxt.attribute.AttributeMapper;
import com.scnu.ytxt.persistence.iface.user.UserManageDao;

/**
 * 用户管理DaoImpl
 * 
 * @author Ray
 */
public class UserManageDaoImpl implements UserManageDao {
	private LdapTemplate ldapTemplate;
	/** objectClass类型 */
	private static final String OBJECT_NAME = "user";
	/** 节点名 */
	private static final String BASE = "ou=user";
	/** 所需要的类名称 */
	private static final String ENTITY_CLASSNAME
						= "com.scnu.ytxt.persistence.sqlmapdao.user.UserForLDAP";
	/** 主键 */
	private static final String PRIMARY_KEY = "userUid";
	/** 最大页数 */
	private static final int MAX_PAGE = 10000;

	AttributeFather father = null;

	AttributeBuilder builder = null;

	AttributeMapper mapper = null;

	public void setLdapTemplate(LdapTemplate ldapTemplate)
	{
		this.ldapTemplate = ldapTemplate;
	}

	/** 构造函数 */
	public UserManageDaoImpl()
	{
		father = new AttributeFather(ENTITY_CLASSNAME);

		builder = new AttributeBuilder();

		mapper = new AttributeMapper();
	}

	/** 创建条目对应的DN */
	public DistinguishedName getDN(Object parameterObject, String primaryKey,
			String ouBase)
	{
		UserForLDAP userForLDAP = (UserForLDAP) parameterObject;

		// 设置在ou=user下查找对象
		DistinguishedName newContactDN = new DistinguishedName(ouBase);

		// 设置需要删除的条目的DN
		newContactDN.add(primaryKey, userForLDAP.getUserUid());

		return newContactDN;
	}

	/** 添加 */
	public int addUser(final Object parameterObject)
	{
		try
		{
			// 获取用户传来的属性集
			Attributes attri = builder.getUserAttrs(parameterObject,
					OBJECT_NAME);

			DistinguishedName newContactDN = getDN(parameterObject,
					PRIMARY_KEY, BASE);
			// 把新条目绑定到LDAP
			ldapTemplate.bind(newContactDN, null, attri);
			// 参数说明（"userUid=liling,ou=user" , null(绑定对象) , 要添加的字段集）

			return 1;

		}
		catch (Exception e)
		{
			System.out.println("异常：" + e);
			return 0;
		}
	}

	/** 删除 */
	public int delUser(final Object parameterObject)
	{
		DistinguishedName newContactDN
				= getDN(parameterObject, PRIMARY_KEY,BASE);
		try
		{

			// 进行删除，其中true表示同时删除其孩子结点
			ldapTemplate.unbind(newContactDN, true);

			return 1;

		}
		catch (Exception e)
		{
			return 0;
		}
	}

	/** 修改 */
	public int updateUserInfo(final Object parameterObject, String updateType)
	{
		// 获取用户传来的属性集
		Attributes attri = builder.getUserAttrs(parameterObject,
				OBJECT_NAME);

		DistinguishedName newContactDN = getDN(parameterObject, PRIMARY_KEY,
				BASE);
		try
		{
			ldapTemplate.rebind(newContactDN, null, attri);
			// 参数说明（"userUid=liling,ou=user" , null , 要添加的字段值）
			return 1;
		}
		catch (Exception e)
		{
			return 0;
		}
	}

	/** 查询 */
	public List getUserInfo(final Object parameterObject, int curPage,
			int pageSize)
	{
		// 用于存储条目列表
		List list = new ArrayList();
		long starTime = System.currentTimeMillis();

		// 设置filter
		String filter = "objectclass=" + OBJECT_NAME;

		// 声明搜索控件
		SearchControls searchControls = new SearchControls();

		// 指定检索范围
		searchControls.setSearchScope(SearchControls.SUBTREE_SCOPE);
		/*
		 * 0:OBJECT_SCOPE,搜索指定的命名对象。 
		 * 1:ONELEVEL_SCOPE,只搜索指定命名对象的一个级别，这是缺省值。
		 * 2:SUBTREE_SCOPE,搜索以指定命名对象为根结点的整棵树
		 */

		// 声明属性名集合，并由Map类型转换为String类型数组
		Map attriMap = father.getAttriName();
		String returnedAtts[] = new String[attriMap.size()];

		for (int i = 0, size = attriMap.size(); i < size; i++)
		{
			returnedAtts[i] = (String) (attriMap.get(i));
		}
		// 设置要返回的属性，即所有
		searchControls.setReturningAttributes(returnedAtts);

		// 设置handler，handler里存储了条目的list
		CollectingNameClassPairCallbackHandler handler
				= ldapTemplate.new AttributesMapperCallbackHandler(mapper);

		// 设置页面大小
		PagedResultsRequestControl requestControl
				= new PagedResultsRequestControl(pageSize);

		// 分为两种情况，第一种只取第一页，第二种取其他页数
		if (curPage == 1)
		{
			try
			{
				// 只获取第一页
				ldapTemplate.search(BASE, filter, searchControls, handler,
						requestControl);
				list = handler.getList();
			}
			catch (Exception e)
			{
				System.out.println("分页查询异常1" + e);
			}
		}
		else
		{
			try
			{
				// 按分页搜索，并将结果存进handler，这里获取第一页
				ldapTemplate.search(BASE, filter, searchControls, handler,
						requestControl);

				// 循环获取其余的页数，直至目标页
				for (int i = 0, cur_1 = curPage - 1, cur_2 = curPage - 2; i < cur_1; i++)
				{
					// 声明临时变量handlerTemp。用于每次存储该次搜索的页面信息
					CollectingNameClassPairCallbackHandler handlerTemp
							= ldapTemplate.new AttributesMapperCallbackHandler(mapper);

					// 设置页面大小
					requestControl = new PagedResultsRequestControl(pageSize,
							requestControl.getCookie());

					// 在上次查询的基础上继续往后查询
					ldapTemplate.search(BASE, filter, searchControls,
							handlerTemp, requestControl);

					// 检测为当前页，获取当前页的条目列表
					if (i == cur_2)
						list = handlerTemp.getList();
				}
				long endTime = System.currentTimeMillis();
				System.out.println("查询所用时间:" + (endTime - starTime));
			}
			catch (Exception e)
			{
				System.out.println("分页查询异常2" + e);
			}
		}
		return list;
	}

	/** 查询表的行数 */
	public int getUserTotal(final Object parameterObject) {
		long starTime = System.currentTimeMillis();

		// 条目列表
		List list = null;
		// 设置filter
		String filter = "objectclass=" + OBJECT_NAME;

		// 声明搜索控件
		SearchControls searchControls = new SearchControls();

		// 指定检索范围
		searchControls.setSearchScope(SearchControls.SUBTREE_SCOPE);
		// 0:OBJECT_SCOPE,搜索指定命名的对象。1:ONELEVEL_SCOPE,只搜索指定命名对象的一个级别，这是缺省值。2:SUBTREE_SCOPE,搜索指定命名对象的子树，包括指定的命名对象

		// 声明属性名集合，并转换为String数组

		// 不返回属性对
		searchControls.setReturningAttributes(null);

		// 设置handler，handler里存储了条目的list
		CollectingNameClassPairCallbackHandler handler
				= ldapTemplate.new AttributesMapperCallbackHandler(mapper);

		// 设置页面大小
		PagedResultsRequestControl requestControl
				= new PagedResultsRequestControl(MAX_PAGE);

		try
		{
			// 只获取第一页
			ldapTemplate.search(BASE, filter, searchControls, handler,
					requestControl);
			list = handler.getList();
			long endTime = System.currentTimeMillis();
			System.out.println("获得记录数所用时间:" + (endTime - starTime));
		}
		catch (Exception e)
		{
			System.out.println("分页查询异常1" + e);
		}

		return list.size();
	}

	/** 查询指定记录 */
	public Object getUserInfoById(final Object parameterObject) {

		// 条目列表
		List list = null;
		try
		{
			UserForLDAP userForLDAP = (UserForLDAP) parameterObject;

			// 过滤器
			AndFilter andFilter = new AndFilter();
			andFilter.and(new EqualsFilter("objectclass", OBJECT_NAME));

			// 添加userUid的过滤器设置
			if (userForLDAP.getUserUid() != "")
				andFilter.and(new EqualsFilter(PRIMARY_KEY, userForLDAP.getUserUid()));
			else
				return null;

			// 进行检索
			list = ldapTemplate.search(BASE, andFilter.encode(),mapper);
		}
		catch (Exception e)
		{
			System.out.println("查询指定记录异常" + e);
		}
		return list;
	}
}