LDAP Java打印调试输出

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 searchBase = "dc=example,dc=com";
        String searchFilter = "(objectClass=person)";

        try {
            // 建立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查询
            SearchControls searchControls = new SearchControls();
            searchControls.setSearchScope(SearchControls.SUBTREE_SCOPE);
            NamingEnumeration<SearchResult> results = ctx.search(searchBase, searchFilter, searchControls);

            // 遍历结果集并打印调试输出
            while (results.hasMore()) {
                SearchResult result = results.next();
                Attributes attrs = result.getAttributes();
                Attribute cn = attrs.get("cn");
                Attribute email = attrs.get("email");
                System.out.println("Name: " + cn.get());
                System.out.println("Email: " + email.get());
                System.out.println("--------------------");
            }

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