How to avoid many if/else conditions in the method?

I'm in doubts am on right way for one of my methods. This one is a compositor of URI I'm using for my http requests. It just takes data from a separate static class with final Strings, merges them together and includes received from the server token where necessary. It happened all URIs are with token and the only one, authentication, without it. What I've done:

private URI urlComposer(String apiUri, String token) { 
        URI uri = null;
        try {

            if(apiUri.equals("POST_AUTH_URL")) {
                uri = URIUtils.createURI(null, MyConfig.WEB_SERVER, -1, apiUri, null, null);
                return uri; 
            }

            String tmp = apiUri.toString();
            String[] array = tmp.split("<token>");
            tmp = array[0] + auth.getToken() + array[1];

            uri = URIUtils.createURI(null, MyConfig.WEB_SERVER, -1, tmp, null, null);

            if (MyConfig.DEBUG) Log.d("Dev", "Constructed url " + uri);
            return uri; 
        } catch (URISyntaxException e) {
            if (MyConfig.DEBUG) Log.d("Dev", "urlComposer was unable to construct a URL"); 
            e.printStackTrace();
        }
        return null;
    }

Trying to look in the future I don't like the idea to generate more if/else statements if I would have more special cases like this POST_AUTH_URL. One one hand I want the only one method to be called to construct a URI, on开发者_JAVA技巧 the other I don't want these ifs. What shall I do?

If you always set URIs, only different ones, you can use a map:

uriMap.put("POST_AUTH_URL", URIUtils.createURI(null, MyConfig.WEB_SERVER, -1, apiUri, null, null));

You can access this map later:

uri = uriMap.get(apiUri);

You could theoretically create an enum URI_TYPE with method createURI (it is difficult to derive the actual parameters from the provided code snippet). This way you'd simply invoke this method on a specific enum value, which would have its own specific implementation.

Pls refer this and this for more information. Hope it helps.