本文共 2577 字,大约阅读时间需要 8 分钟。
- 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;
-
-
-
-
- public class LDAPConnection {
-
- private String baseDN;
- private String filter;
- private String[] attributes;
- private Hashtable<String, String> env = null;
-
- private static LDAPConnection lc;
-
- private LDAPConnection() {
-
-
- baseDN = "******";
-
- attributes = new String[]{ "cn"};
-
- if ((filter == null) || (filter == ""))
- filter = "objectclass=*";
- }
-
- public static LDAPConnection getInstance() {
- if (lc == null) {
- lc = new LDAPConnection();
- }
- return lc;
- }
-
-
-
-
-
- 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();
- }
-
- }
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