Back when i was preparing for the Web Component Developer exam, i had an idea of the requestURI and pattern mapping against the exact servlet. In simple words, the logic behind how the server maps the ”” tag and the tag. I know that it is really a monstrous job, but then i wanted to try it using a simple array. Of course the code i wrote is buggy ( I myself found one big bug in there.) But for most cases, it works fine.

Here is my code. Download from here. public class Navigation {

static String[] config= { “/test2”, “TestServlet2”, “/test”, “TestServlet” }; static String requestUri= “/test2/”;

public static void main(String[] args) {

System.out.println(“output” +new Navigation().getHandler(config, requestUri)); }

public String getHandler(String[] config, String requestUri) { System.out.println(“Request uri : “+requestUri); int maxMatch=0; //store the length of the match that is the longest. String currentMatch=null; //the most accurate match string

for (int i=0;i<config.length;i=i+2){ //looping through the array. // Coz, you know that every odd String in the array is the Handler String, //you can just skip them

System.out.println(“config[i] :”+config[i]);

if ((requestUri.startsWith(config[i]))){ if (config[i].length()>maxMatch){ //compare the length of the //previously matched String, if any maxMatch=config[i].length(); //if so, store it System.out.println(“max match… “+config[i+1]); currentMatch=config[i+1]; //Dont forget the String too }

}

}

if (currentMatch!=null){ return currentMatch; //return it. }

return “/”; }

}