springLdap 操作ldap示例（增删改查）

转自：http://blog.csdn.net/sundenskyqq/article/details/9002440

这部分的示例网上的确有很多，但是个人在查找的过程中还是感到不够满意，所以就自己总结一下，方便自己以后查阅，也方便其他童鞋查找资料。

springLdap 操作ldap示例（增删改查）

在看这个文章之前，最好是了解了openldap的schema文件，也就是了解objectClass和attribute以及它们的关系。否则很容易不了解代码的含义以及抛出的异常。

实体类：

package ldap.entity;

/**
 * 本测试类person对象来自schema文件的core.schema文件
 * objectClass为person，必填属性和可选属性也是根据该对象得到的。
 * Author:Ding Chengyun
 */
public class Person {

	private String sn; //必填属性
	private String cn; //必填属性
	
	private String userPassword; //可选属性
	private String telephoneNumber; //可选属性
	private String seeAlso; //可选属性
	private String description;  //可选属性
	public String getSn() {
		return sn;
	}
	public void setSn(String sn) {
		this.sn = sn;
	}
	public String getCn() {
		return cn;
	}
	public void setCn(String cn) {
		this.cn = cn;
	}
	public String getUserPassword() {
		return userPassword;
	}
	public void setUserPassword(String userPassword) {
		this.userPassword = userPassword;
	}
	public String getTelephoneNumber() {
		return telephoneNumber;
	}
	public void setTelephoneNumber(String telephoneNumber) {
		this.telephoneNumber = telephoneNumber;
	}
	public String getSeeAlso() {
		return seeAlso;
	}
	public void setSeeAlso(String seeAlso) {
		this.seeAlso = seeAlso;
	}
	public String getDescription() {
		return description;
	}
	public void setDescription(String description) {
		this.description = description;
	}
	
}

mapper类： 

package ldap.mapper;

import javax.naming.NamingException;
import javax.naming.directory.Attributes;

import ldap.entity.Person;

import org.springframework.ldap.core.AttributesMapper;

/**
 * 这个类的作用是将ldap中的属性转化为实体类的属性值，
 * 在查询信息的时候会用到
 */
public class PersonAttributeMapper implements AttributesMapper{

	@Override
	public Object mapFromAttributes(Attributes attr) throws NamingException {
		Person person = new Person();
		person.setSn((String)attr.get("sn").get());
		person.setCn((String)attr.get("cn").get());
		
		if (attr.get("userPassword") != null) {
			person.setUserPassword((String)attr.get("userPassword").get());
		}
		if (attr.get("telephoneNumber") != null) {
			person.setTelephoneNumber((String)attr.get("telephoneNumber").get());
		}
		if (attr.get("seeAlso") != null) {
			person.setSeeAlso((String)attr.get("seeAlso").get());
		}
		if (attr.get("description") != null) {
			person.setDescription((String)attr.get("description").get());
		}
		return person;
	}

}

dao类：

package ldap.dao;

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

import javax.naming.directory.Attributes;
import javax.naming.directory.BasicAttribute;
import javax.naming.directory.BasicAttributes;
import javax.naming.directory.DirContext;
import javax.naming.directory.ModificationItem;

import ldap.entity.Person;
import ldap.mapper.PersonAttributeMapper;

import org.springframework.ldap.NameNotFoundException;
import org.springframework.ldap.core.DistinguishedName;
import org.springframework.ldap.core.LdapTemplate;
import org.springframework.ldap.filter.AndFilter;
import org.springframework.ldap.filter.EqualsFilter;

import xhrd.ucenter.ldap.entity.UcenterLdapApplication;
import xhrd.ucenter.ldap.ldapAttributeMappper.ApplicationAttributeMapper;

/**
 * Description: 此类的作用是使用spring的 LdapTemplate完成对ldap的增删改查的操作
 * Author:Ding Chengyun
 */
public class PersonDao {

	//注入spring的LdapTemplate，此处在spring的配置文件中需要配置
	private LdapTemplate ldapTemplate;

	public LdapTemplate getLdapTemplate() {
		return ldapTemplate;
	}
	public void setLdapTemplate(LdapTemplate ldapTemplate) {
		this.ldapTemplate = ldapTemplate;
	}
	
	/**
	 * 添加 一条记录
	 * @param person
	 */
	public void createOnePerson(Person person) {
		BasicAttribute ba = new BasicAttribute("objectclass");
		ba.add("person"); //此处的person对应的是core.schema文件中的objectClass：person
		Attributes attr = new BasicAttributes();
		attr.put(ba);
		//必填属性，不能为null也不能为空字符串
		attr.put("cn", person.getCn());
		attr.put("sn", person.getSn());

		//可选字段需要判断是否为空，如果为空则不能添加
		if (person.getDescription() != null
				&& person.getDescription().length() > 0) {
			attr.put("description", person.getDescription());
		}

		if (person.getUserPassword() != null
				&& person.getUserPassword().length() > 0) {
			attr.put("userPassword", person.getUserPassword());
		}
		if (person.getSeeAlso() != null
				&& person.getSeeAlso().length() > 0) {
			attr.put("seeAlso", person.getSeeAlso());
		}
		if (person.getTelephoneNumber() != null 
				&& person.getTelephoneNumber().length() > 0) {
			attr.put("telephoneNumber", person.getTelephoneNumber());
		}
		
		//bind方法即是添加一条记录。
		ldapTemplate.bind(getDn(person.getCn()), null, attr);
	}

	/**
	
	/**
	 * 根据dn查询详细信息
	 * @param cn
	 * @return
	 */
	public UcenterLdapApplication getPersonDetail(String cn) {
		try {
			//ldapTeplate的lookup方法是根据dn进行查询，此查询的效率超高
			UcenterLdapApplication ua = (UcenterLdapApplication) 
				ldapTemplate.lookup(getDn(cn),
						new ApplicationAttributeMapper());
			return ua;
		} catch (NameNotFoundException e) {
			return null;
		}
	}

	/**
	 * 根据自定义的属性值查询person列表
	 * @param person
	 * @return
	 */
	public List<Person> getPersonList(
			Person person) {
		List<Person> list = new ArrayList<Person>();
		//查询过滤条件
		AndFilter andFilter = new AndFilter();
		andFilter.and(new EqualsFilter("objectclass", "person"));
		
		
		if (person.getCn() != null
				&& person.getCn().length() > 0) {
			andFilter.and(new EqualsFilter("cn", person.getCn()));
		}
		if (person.getSn() != null
				&& person.getSn().length() > 0) {
			andFilter.and(new EqualsFilter("sn", person.getSn()));
		}

		if (person.getDescription() != null
				&& person.getDescription().length() > 0) {
			andFilter.and(new EqualsFilter("description", person.getDescription()));
		}

		if (person.getUserPassword() != null
				&& person.getUserPassword().length() > 0) {
			andFilter.and(new EqualsFilter("userPassword", person.getUserPassword()));
		}
		if (person.getSeeAlso() != null
				&& person.getSeeAlso().length() > 0) {
			andFilter.and(new EqualsFilter("seeAlso", person.getSeeAlso()));
		}
		if (person.getTelephoneNumber() != null 
				&& person.getTelephoneNumber().length() > 0) {
			andFilter.and(new EqualsFilter("telephoneNumber", person.getTelephoneNumber()));
		}
		//search是根据过滤条件进行查询，第一个参数是父节点的dn，可以为空，不为空时查询效率更高
		list = ldapTemplate.search("", andFilter.encode(),
				new PersonAttributeMapper());
		return list;
	}

	/**
	 * 删除一条记录，根据dn
	 * @param cn
	 */
	public void removeOnePerson(String cn) {
		ldapTemplate.unbind(getDn(cn));
	}

	/**
	 * 修改操作
	 * @param person
	 */
	public void updateOnePerson(Person person) {
		if (person == null || person.getCn() == null 
				|| person.getCn().length() <= 0) {
			return;
		}
		List<ModificationItem> mList = new ArrayList<ModificationItem>();
		
		mList.add(new ModificationItem(DirContext.REPLACE_ATTRIBUTE,
				new BasicAttribute("sn",person.getSn())));
		mList.add(new ModificationItem(DirContext.REPLACE_ATTRIBUTE,
				new BasicAttribute("description",person.getDescription())));
		mList.add(new ModificationItem(DirContext.REPLACE_ATTRIBUTE,
				new BasicAttribute("seeAlso",person.getSeeAlso())));
		mList.add(new ModificationItem(DirContext.REPLACE_ATTRIBUTE,
				new BasicAttribute("telephoneNumber",person.getTelephoneNumber())));
		mList.add(new ModificationItem(DirContext.REPLACE_ATTRIBUTE,
				new BasicAttribute("userPassword",person.getUserPassword())));
		
		if (mList.size() > 0) {
			ModificationItem[] mArray = new ModificationItem[mList.size()];
			for (int i = 0; i < mList.size(); i++) {
				mArray[i] = mList.get(i);
			}
			//modifyAttributes 方法是修改对象的操作，与rebind（）方法需要区别开
			ldapTemplate.modifyAttributes(this.getDn(person.getCn()), mArray);
		}
	}
	/**
	 * 得到dn
	 * @param cn
	 * @return
	 */
	private DistinguishedName getDn(String cn) {
		//得到根目录，也就是配置文件中配置的ldap的根目录
		DistinguishedName newContactDN = new DistinguishedName();
		// 添加cn，即使得该条记录的dn为"cn=cn,根目录",例如"cn=abc,dc=testdc,dc=com"
		newContactDN.add("cn", cn);
		return newContactDN;
	}
}