「LDAP検索」の詳細記事： Javaってまだいけますか

(&(objectClass=Person)(cn=Babs*))

(|(objectClass=Person)(cn=Babs*))

(!(objectClass=Person))

public String escape(String str) {
	
	if(str == null) {
		return "\\00";
	}
	
	// 最初に\をエスケープ
	if(str.indexOf("\\") >= 0) {
		str = StringUtils.replace(str, "\\", "\\5C");
	}
	
	if(str.indexOf("*") >= 0) {
		str = StringUtils.replace(str, "*", "\\2A");
	}
	if(str.indexOf("(") >= 0) {
		str = StringUtils.replace(str, "(", "\\28");
	}
	if(str.indexOf(")") >= 0) {
		str = StringUtils.replace(str, ")", "\\29");
	}
	return str;
}

public void search(String cn) {
	String filter = "(cn=*" + escape(cn) + ")";
	
	SearchControls ctls = new SearchControls();
	ctls.setSearchScope(SearchControls.SUBTREE_SCOPE);

	Hashtable env = getEnv();
	DirContext dirContext = new InitialDirContext(env);

	try {
		NamingEnumeration entries = dirContext.search([baseDn], filter, ctls);

		while (entries.hasMore()) {
			javax.naming.directory.SearchResult entry = (javax.naming.directory.SearchResult) entries.next();
			
			// 省略
		}
		
	} finally {
		dirContext.close();
	}
}

public Hashtable getEnv() {
	Hashtable env = new Hashtable();
	env.put("java.naming.factory.initial", "com.sun.jndi.ldap.LdapCtxFactory");
	env.put("java.naming.provider.url", "ldap://" + [LDAPサーバホスト名] + ":" + [LDAPサーバポート番号] + "/");
	env.put("java.naming.security.authentication", "simple");
	env.put("java.naming.security.principal", "");
	env.put("java.naming.security.credentials", "");
	return env;
}