Java系统如何共用域用户名和密码

import java.util.Hashtable;

import javax.naming.Context;
import javax.naming.NamingException;
import javax.naming.directory.DirContext;
import javax.naming.directory.InitialDirContext;

public class TestLDAP {
	
	public static String INITCTX = "com.sun.jndi.ldap.LdapCtxFactory";
	/*
	 * Host name and port number of LDAP server
	 */
	public static String MY_SERVICE = "ldap://10.46.33.2:389";
	
	
	public static void main(String[] args) {

	    //需要到sun下载jndi  LDAP Service Provider, 1.2.4  包
	    //http://java.sun.com/products/jndi/downloads/index.html
	    Hashtable env = new Hashtable();
	    env.put(Context.INITIAL_CONTEXT_FACTORY, INITCTX);
	    env.put(Context.PROVIDER_URL, MY_SERVICE);
		env.put(Context.SECURITY_AUTHENTICATION, "simple");

		// 使用者的完整 email ，也就是 AD 中的 ${sAMAccountName}@your.domain.name
		env.put(Context.SECURITY_PRINCIPAL, "[e-mail]");
//		env.put(Context.SECURITY_PRINCIPAL, "[e-mail]");
		// 認證當時的密碼
		env.put(Context.SECURITY_CREDENTIALS, "密码");
	    try {
			DirContext ctx = new InitialDirContext(env);
		} catch (NamingException e) {
			//验证失败
			e.printStackTrace();
		}
	}
}