Java 读取 AD 用户

Java代码


import java.util.ArrayList;

import java.util.HashMap;

import java.util.Hashtable;

import java.util.List;

import java.util.Map;

import javax.naming.Context;

import javax.naming.NamingEnumeration;

import javax.naming.directory.Attributes;

import javax.naming.directory.SearchControls;

import javax.naming.directory.SearchResult;

import javax.naming.ldap.InitialLdapContext;

import javax.naming.ldap.LdapContext;

/**

* LDAP 连接

*/

public class LDAPConnection {

private String baseDN;

private String filter;

private String[] attributes;

private Hashtable<String, String> env = null;

private static LDAPConnection lc;

private LDAPConnection() {

//搜索根节点

baseDN = "******";

//要查询的属性列

attributes = new String[]{"cn"};

//过滤条件

if ((filter == null) || (filter == ""))

filter = "objectclass=*";

}

public static LDAPConnection getInstance() {

if (lc == null) {

lc = new LDAPConnection();

}

return lc;

}

/**

* 建立LDAP连接

* @return boolean

*/

private LdapContext getLdapContext() {

env = new Hashtable<String, String>();

env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");

env.put(Context.PROVIDER_URL, "ldap://*****:389");

env.put(Context.SECURITY_AUTHENTICATION, "simple");

env.put(Context.SECURITY_CREDENTIALS, "123456");

env.put(Context.SECURITY_PRINCIPAL, "****");

try {

return new InitialLdapContext(env, null);

} catch (Exception e) {

System.out.println("连接服务器失败！");

e.printStackTrace();

}

return null;

}

/**

* 获取用户信息

* @return List<Map>

*/

public List<Map> getUsers() {

LdapContext ctx = getLdapContext();

if(ctx == null){

return null;

}

List<Map> list = new ArrayList<Map>();

try {

SearchControls constraints = new SearchControls();

constraints.setReturningAttributes(attributes);

constraints.setSearchScope(SearchControls.SUBTREE_SCOPE);

NamingEnumeration<?> en = ctx.search(baseDN, filter, constraints);

while (en != null && en.hasMoreElements()) {

Object obj = en.nextElement();

if (obj instanceof SearchResult) {

SearchResult si = (SearchResult) obj;

Attributes attrs = si.getAttributes();

Map<String, Object> map = new HashMap<String, Object>();

for (int i = 0; i < attributes.length; i++) {

String attributeName = attributes[i];

if(attrs.get(attributeName) == null){

map.put(attributeName, attrs.get(attributeName));

}else{

map.put(attributeName, attrs.get(attributeName).get());

}

}

System.out.println(map);

list.add(map);

} else {

System.out.println(obj);

}

}

} catch (Exception e) {

e.printStackTrace();

}

System.out.println("总符合条件记录数："+list.size());

return list;

}

public static void main(String arg[]) {

LDAPConnection.getInstance().getUsers();

}

}