Java操作ldap的基本方法(下)(增删改查)，针对初学者，非常实用！

哈喽小伙伴们，我又来啦！你们上篇博客的步骤都成功了吗？有疑问的请在评论处写出，我会尽最大努力帮助你们。咱们接着上篇博客来说，接下来是修改和删除操作啦！

上篇博客地址：https://blog.csdn.net/IT_0417/article/details/83897748

下面是修改代码：

package com.spring.ldap;

import com.novell.ldap.LDAPAttribute;
import com.novell.ldap.LDAPConnection;
import com.novell.ldap.LDAPException;
import com.novell.ldap.LDAPModification;

import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

/**
 * @author jianning
 * @description 修改操作示例
 * @date 2018/11/8
 * @time 14:52
 */
public class LDAPModifyAttrs {

    public static void main(String[] args) {
        String ldapHost = "localhost";
        String loginDN = "cn=Manager,dc=maxcrc,dc=com";
        String password = "secret";
        //要修改的用户的entryDN,uid不可修改
        String modifyDN = "uid=test,ou=Employee,dc=maxcrc,dc=com";

        int ldapPort = LDAPConnection.DEFAULT_PORT;
        int ldapVersion = LDAPConnection.LDAP_V3;
        LDAPConnection lc = new LDAPConnection();
        List modList = new ArrayList();
        // Add a new value to the description attribute
        String desc = "This object was modified at " + new Date();
        LDAPAttribute attribute = new LDAPAttribute("description", desc);
        modList.add(new LDAPModification(LDAPModification.ADD, attribute));
        attribute = new LDAPAttribute("telephoneNumber", "180-8888-xxxx");
        modList.add(new LDAPModification(LDAPModification.ADD, attribute));
        // Replace the labeledURI address with a new value
        attribute = new LDAPAttribute("labeledURI", "www.micmiu.com");
        modList.add(new LDAPModification(LDAPModification.REPLACE, attribute));
        // delete the email attribute
        attribute = new LDAPAttribute("mail");
        modList.add(new LDAPModification(LDAPModification.DELETE, attribute));
        LDAPModification[] mods = new LDAPModification[modList.size()];
        mods = (LDAPModification[]) modList.toArray(mods);
        try {
            lc.connect(ldapHost, ldapPort);
            lc.bind(ldapVersion, loginDN, password.getBytes("UTF8"));
            lc.modify(modifyDN, mods);
            System.out.println("LDAPAttribute add、replace、delete all successful.");
        } catch (LDAPException e) {
            e.printStackTrace();
        } catch (UnsupportedEncodingException e) {
            System.out.println("Error: " + e.toString());
        } finally {
            try {
                if (lc.isConnected()) {
                    lc.disconnect();
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

}

下面我贴出修改前后的对比，你们就更加理解啦！(不知道修改前的属性可以翻看我上一篇博客～～)

接下来就是最残忍的一步啦，我们要将创建、修改好的用户给pass掉，下面是代码：

package com.spring.ldap;

import com.novell.ldap.LDAPConnection;
import com.novell.ldap.LDAPException;

import java.io.UnsupportedEncodingException;

/**
 * @author jianning
 * @description 删除条目的示例
 * @date 2018/11/8
 * @time 14:44
 */
public class LDAPDeleteEntry {

    public static void main(String[] args) {
        String ldapHost = "localhost";
        String loginDN = "cn=Manager,dc=maxcrc,dc=com"; //要执行ou的creatorsName
        String password = "secret";
        String deleteDN = "uid=test,ou=Employee,dc=maxcrc,dc=com";//要删除的用户entryDN
        int ldapPort = LDAPConnection.DEFAULT_PORT;
        int ldapVersion = LDAPConnection.LDAP_V3;
        LDAPConnection lc = new LDAPConnection();
        try {
            lc.connect(ldapHost, ldapPort);
            lc.bind(ldapVersion, loginDN, password.getBytes("UTF8"));
            lc.delete(deleteDN);
            System.out.println(" delete Entry: " + deleteDN + " success.");
            lc.disconnect();
        } catch (LDAPException e) {
            if (e.getResultCode() == LDAPException.NO_SUCH_OBJECT) {
                System.err.println("Error: No such object");
            } else if (e.getResultCode() == LDAPException.INSUFFICIENT_ACCESS_RIGHTS) {
                System.err.println("Error: Insufficient rights");
            } else {
                System.err.println("Error: " + e.toString());
            }
        } catch (UnsupportedEncodingException e) {
            System.out.println("Error: " + e.toString());
        } finally {
            try {
                if (lc.isConnected()) {
                    lc.disconnect();
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }
}

右键Run，刷新ldap工具就可以看到，我们的test用户不见啦。

不知道小伙伴们都成功了没有，我有几点要说明一下：

1.上篇博客中有写到需求，还需要做到ldap和mysql数据动态同步，但是我今天没有整理好代码，所以就在下篇博客中写出吧～

2.代码中的loginDN是要执行ou的creatorsName；要操作的DN是用户的entryDN。代码中我都加了注释，如果没有找到这些属性，我建议大家不要急于求成，还是多看一些ldap的博客吧！

好啦，今天是周五，写篇博客也算是对我一周的总结。前两天看了一篇文章，一名程序员30岁之前的路：程序员->架构师->Team Leader(Project Manager)->技术总监，看完之后想了想自己还像白纸一样神马都不会啊，压力山大！当然了，我认为不论从事什么行业，都需要我们付出很大努力，没有人的成功是轻轻松松的，祝大家在程序员的道路越走越远～～