如何使用java中的以下详细信息连接到LDAP服务器？

我有以下java代码，但我得到了错误 提供详细信息

password=“some”；域名=ABF.ADDAS.com用户 name=SADFA.com\username或SADFA\username

Hashtable env=new Hashtable（）；
put（Context.INITIAL\u Context\u工厂，“com.sun.jndi.ldap.LdapCtxFactory”）；
env.put（Context.PROVIDER\u URL，“ldap://ip:389");
// 
环境put（Context.SECURITY_认证，“simple”）；
环境put（Context.SECURITY_PRINCIPAL，“”）；
环境put（Context.SECURITY_凭证，“密码”）；

只需使用参数调用InitialLdapContext：

env.put(Context.SECURITY_AUTHENTICATION, "simple");
env.put(Context.SECURITY_PRINCIPAL, domainName + "\\" + username);
env.put(Context.SECURITY_CREDENTIALS, password);

try{
    return new InitialLdapContext(env, null);
}
catch(javax.naming.CommunicationException e){
    throw new NamingException("Failed to connect to " + domainName + ((serverName==null)? "" : " through " + serverName));
}
catch(NamingException e){
    throw new NamingException("Failed to authenticate " + username + "@" + domainName + ((serverName==null)? "" : " through " + serverName));
}

---

LDAP身份验证错误：LDAP:错误代码49-80090308:LDAPPER:DSID-0C0900334，注释：AcceptSecurityContext错误，数据52e，vece 49 LDAP\u无效\u凭证也请尝试

env.put（Context.SECURITY\u主体，用户名+“@”+域名）
env.put(Context.SECURITY_AUTHENTICATION, "simple");
env.put(Context.SECURITY_PRINCIPAL, domainName + "\\" + username);
env.put(Context.SECURITY_CREDENTIALS, password);

try{
    return new InitialLdapContext(env, null);
}
catch(javax.naming.CommunicationException e){
    throw new NamingException("Failed to connect to " + domainName + ((serverName==null)? "" : " through " + serverName));
}
catch(NamingException e){
    throw new NamingException("Failed to authenticate " + username + "@" + domainName + ((serverName==null)? "" : " through " + serverName));
}