java-classic-code/spring-ldap/TraditionalPersonRepoImpl.java

package com.primeton.poctag.service.ldap.impl;

import com.primeton.poctag.service.ldap.PersonRepo;

import javax.naming.Context;
import javax.naming.NameNotFoundException;
import javax.naming.NamingEnumeration;
import javax.naming.NamingException;
import javax.naming.directory.Attribute;
import javax.naming.directory.Attributes;
import javax.naming.directory.DirContext;
import javax.naming.directory.InitialDirContext;
import javax.naming.directory.SearchControls;
import javax.naming.directory.SearchResult;
import java.util.Hashtable;
import java.util.LinkedList;
import java.util.List;

/**
 * <pre>
 *
 * Created by zhenqin.
 * User: zhenqin
 * Date: 2021/9/14
 * Time: 16:40
 * Vendor: yiidata.com
 *
 * </pre>
 *
 * @author zhenqin
 */
public class TraditionalPersonRepoImpl implements PersonRepo {

    @Override
    public List<String> getAllPersonNames() {
        Hashtable env = new Hashtable();
        env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
        env.put(Context.PROVIDER_URL, "ldap://localhost:10389/ou=yiidata,dc=yiidata,dc=com");

        DirContext ctx;
        try {
            ctx = new InitialDirContext(env);
        } catch (NamingException e) {
            throw new RuntimeException(e);
        }

        List<String> list = new LinkedList<String>();
        NamingEnumeration results = null;
        try {
            SearchControls controls = new SearchControls();
            controls.setSearchScope(SearchControls.SUBTREE_SCOPE);
            results = ctx.search("", "(uid=*)", controls);

            System.out.println("-------------------------------");
            while (results.hasMore()) {
                SearchResult searchResult = (SearchResult) results.next();
                Attributes attributes = searchResult.getAttributes();
                System.out.println(attributes);
                Attribute attr = attributes.get("uid");
                String cn = attr.get().toString();
                list.add(cn);
            }
        } catch (NameNotFoundException e) {
            // The base context was not found.
            e.printStackTrace();
            // Just clean up and exit.
        } catch (NamingException e) {
            throw new RuntimeException(e);
        } finally {
            if (results != null) {
                try {
                    results.close();
                } catch (Exception e) {
                    // Never mind this.
                }
            }
            if (ctx != null) {
                try {
                    ctx.close();
                } catch (Exception e) {
                    // Never mind this.
                }
            }
        }
        return list;
    }


    public static void main(String[] args) {
        final List<String> allPersonNames = new TraditionalPersonRepoImpl().getAllPersonNames();
        System.out.println(allPersonNames);
    }
}