Spring ldap登陆

public class PersonDaoImpl implements PersonDao {

	private LdapTemplate ldapTemplate;

	public static void main(String[] args) {
		ApplicationContext cxt = new ClassPathXmlApplicationContext(
				"applicationContext.xml");
		PersonDaoImpl personDao = (PersonDaoImpl) cxt.getBean("personDao");

		// List users = personDao.getAllPersonNames();
		// System.out.println(users.size());
		String userName = "10010a";
		String passWord = "2039729";
		String userDn = personDao.getDnForUser(userName);
		System.out.println("userDn:" + userDn);
		boolean bl=personDao.authenticate(userDn, passWord);
		System.out.println("验证结果:" + bl);
		
		

	}

/**
	 * 根据CN属性取得用户DN（当然你可以根据自己情况换成别的属性来操作）
	 * @param cn
	 * @return
	 */
	private String getDnForUser(String cn) {
		EqualsFilter f = new EqualsFilter("cn", cn);
		List result = ldapTemplate.search(DistinguishedName.EMPTY_PATH, f
				.toString(), new AbstractContextMapper() {
			protected Object doMapFromContext(DirContextOperations ctx) {
				return ctx.getNameInNamespace();
			}
		});
		if (result.size() != 1) {
			throw new RuntimeException("User not found or not unique");
		}
		return (String) result.get(0);
	}
/**
 * 根据用户名密码验证
 * @param userDn
 * @param credentials
 * @return
 */
	public boolean authenticate(String userDn, String credentials) {
		DirContext ctx = null;
		try {
			ctx = ldapTemplate.getContextSource().getContext(userDn,
					credentials);
			return true;
		} catch (Exception e) {
			// Contextcreationfailed-authenticationdidnotsucceed

			return false;
		} finally {
			// ItisimperativethatthecreatedDirContextinstanceisalwaysclosed
			LdapUtils.closeContext(ctx);
		}
	}