ERROR: Need to specify class name in environment or system property LDAP and JNDI

Question

This is my code:

     public class TestConnection {

public static void main(String[] args) {
    String password = "s3cret";
    Map<String, String> env = new HashMap<String, String>();
    env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
    env.put(Context.PROVIDER_URL, "ldap://localhost:389/dc=userdev,dc=local");
    env.put(Context.SECURITY_AUTHENTICATION, "simple");
    //env.put(Context.SECURITY_PRINCIPAL, "uid="+ username +"cn=users"); // replace with user DN
    env.put(Context.SECURITY_PRINCIPAL, "cn=dcmanager,cn=users,dc=userdev,dc=local"); // replace with user DN
    env.put(Context.SECURITY_CREDENTIALS, password);

    DirContext ctx = null;
    try {
       ctx = new InitialDirContext();
    } catch (NamingException e) {
       // handle
    }
    try {
       SearchControls controls = new SearchControls();
       controls.setSearchScope( SearchControls.SUBTREE_SCOPE);
       ctx.search( "", "(objectclass=person)", controls);
       // no need to process the results
    } catch (NameNotFoundException e) {
        e.printStackTrace();
        System.out.println("catch 1");
       // The base context was not found.
       // Just clean up and exit.
    } catch (NamingException e) {
        System.out.println("catch 2");
        e.printStackTrace();
       // exception handling
    } finally {
       // close ctx or do Java 7 try-with-resources http://docs.oracle.com/javase/tutorial/essential/exceptions/tryResourceClose.html
    }

}

    }

I got this error (catch 2) : javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial

I have looked for a lot of solutions, but I don't get the error. Where is the problem? Maybe the context, but I think that the code is perfectly correct.

Answer 1

You have to construct the InitialDirContext object using the env map you have populated. i.e. use the following code to construct it;

ctx = new InitialDirContext(env);