用Java从LDAP中检索sidHistory

import javax.naming.*;
import javax.naming.directory.*;

public class LDAPExample {
    public static void main(String[] args) {
        String ldapUrl = "ldap://ldap.example.com:389";
        String username = "cn=admin,dc=example,dc=com";
        String password = "adminpassword";
        String baseDn = "dc=example,dc=com";
        String searchFilter = "(objectClass=user)";
        String[] attributes = {"sidHistory"};

        try {
            // 创建LDAP连接
            Hashtable<String, String> env = new Hashtable<>();
            env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
            env.put(Context.PROVIDER_URL, ldapUrl);
            env.put(Context.SECURITY_AUTHENTICATION, "simple");
            env.put(Context.SECURITY_PRINCIPAL, username);
            env.put(Context.SECURITY_CREDENTIALS, password);
            DirContext ctx = new InitialDirContext(env);

            // 执行LDAP搜索
            SearchControls searchControls = new SearchControls();
            searchControls.setSearchScope(SearchControls.SUBTREE_SCOPE);
            searchControls.setReturningAttributes(attributes);
            NamingEnumeration<SearchResult> results = ctx.search(baseDn, searchFilter, searchControls);

            // 处理搜索结果
            while (results.hasMore()) {
                SearchResult result = results.next();
                Attributes attrs = result.getAttributes();
                Attribute sidHistoryAttr = attrs.get("sidHistory");
                if (sidHistoryAttr != null) {
                    // 处理sidHistory属性值
                    for (int i = 0; i < sidHistoryAttr.size(); i++) {
                        String sid = (String) sidHistoryAttr.get(i);
                        System.out.println("sidHistory: " + sid);
                    }
                }
            }

            // 关闭LDAP连接
            ctx.close();
        } catch (NamingException e) {
            e.printStackTrace();
        }
    }
}