yacy_search_server/htroot/DemoServlet.java

import net.yacy.yacy;
import net.yacy.cora.protocol.RequestHeader;
import net.yacy.interaction.Interaction;
import net.yacy.server.serverObjects;
import net.yacy.server.serverSwitch;

public final class DemoServlet {

	public static serverObjects respond(final RequestHeader header,
			final serverObjects post, @SuppressWarnings("unused") final serverSwitch env) {

		// return variable that accumulates replacements
		final serverObjects prop = new serverObjects();

		prop.put("temperature", "-10°C");

		// Display currently logged on user
		prop.put("username", Interaction.GetLoggedOnUser(header));

		//Generate Userlist
		int numUsers = 0;
		for (String user : Interaction.GetUsers()) {
            prop.putHTML("users_"+numUsers+"_user", user);
            numUsers++;
        }
        prop.put("users", numUsers);



		if (post != null) {

		if (post.containsKey("submit")) {

			prop.put("temperature", post.get("textthing"));

			String filename= post.get("textthing");

			int counter = 0;

			while (counter < 10) {

				prop.put("localimg_"+counter+"_path","/"+filename);

				prop.put("localimg_"+counter+"_checked", "2");
				counter++;
			}

			prop.put("localimg", counter);



			prop.put("temperature", yacy.homedir+"/DATA/HTDOCS/"+filename);
		}

		}

		// return rewrite properties
		return prop;
	}

}