<meta charset="utf-8">
		<title>Get Cookies</title>
		<script src="jquery-1.9.1.min.js"></script>
		<script>
			$(document).ready(function() {
				$("button").click(function() {								
		    		$.get("http://localhost:8080/SimpleServletProject/GetCookiesServlet", function(responseJson) {
		      			var $ul = $('<ul>').appendTo($('#somediv')); // Create HTML <ul> element and append it to HTML DOM element with ID "somediv".
			            $.each(responseJson, function(index, item) { // Iterate over the JSON array.
			                $('<li>').text(item).appendTo($ul);      // Create HTML <li> element, set its text content with currently iterated item and append it to the <ul>.
			            });
		    		});				  		
				});
			});
		</script>
	
					
		<button>Send an HTTP GET request to a page and get the result back</button>
		<div id="somediv"></div>
	

@WebServlet(description = "This servlet gets and decrypts userId from Cookie", urlPatterns = { "/GetCookiesServlet" })
public class GetCookiesServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {		
		response.setContentType("application/json");
		response.setHeader("Access-Control-Allow-Origin", "*");
		response.setHeader("Access-Control-Allow-Methods", "GET");
		response.setCharacterEncoding("UTF-8");
		PrintWriter writer = response.getWriter();				
		Cookie[] cookies = request.getCookies();
		String userId = null;
		String password = null;
		String companyId = null;
		for(Cookie c : cookies) {
			if ("COMPANY_ID".equals(c.getName())) {
				companyId = c.getValue();
			} else if ("ID".equals(c.getName())) {
				userId = hexStringToStringByAscii(c.getValue());
			} else if ("PASSWORD".equals(c.getName())) {
				password = hexStringToStringByAscii(c.getValue());
			}
		}
		
		if (userId != null && password != null && companyId != null) {
			try {				
				KeyValuePair kvp = UserLocalServiceUtil.decryptUserId(Long.parseLong(companyId), userId, password);				
				List<string> list = new ArrayList<string>();				
			        list.add(kvp.getKey());	    
				String json = new Gson().toJson(list);		
				writer.write(json);		
				writer.close();
			} catch (NumberFormatException e) {				
				e.printStackTrace();
			} catch (PortalException e) {
				e.printStackTrace();
			} catch (SystemException e) {
				e.printStackTrace();
			}
		}
	}
	
	public String hexStringToStringByAscii(String hexString) {
		byte[] bytes = new byte[hexString.length()/2];
		for (int i = 0; i &lt; hexString.length() / 2; i++) {
			String oneHexa = hexString.substring(i * 2, i * 2 + 2);
			bytes[i] = Byte.parseByte(oneHexa, 16);
		}
		try {
			return new String(bytes, "ASCII");
		} catch (UnsupportedEncodingException e) {
			throw new RuntimeException(e);
		}
	}
	
}
</string></string>

response.setHeader("Access-Control-Allow-Origin", "*");