How can I generate HMAC Muse Proxy proxified links in java?

The instructions and code provided below are based on the following assumptions:
– MuseProxyFoundationHMAC is the Muse Proxy application configured with HMAC authentication;
– quiet is the value of the secret;
– userName and timestamp are the signature parameters;
– SHA256 is the algorithm;
– the separator between the signature parameters is . .

Integrate the following code into your Java project:

package com.edulib.muse.proxy.samples;

import java.util.LinkedHashMap;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class Index extends HttpServlet {
private static final long serialVersionUID = 1L;

* Default constructor.
public Index() {
// TODO Auto-generated constructor stub

* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

String algorithm = "HmacSHA256";
String secret = "quiet";
String proxyURL = "http://MUSE_PROXY_HOST:PORT";
String applicationID = "MuseProxyFoundationHMAC";
String separator = ".";
// timestamp represent the current UNIX timestamp
String timestamp = "" + System.currentTimeMillis() / 1000L;
// referer is the referer from request
String referer = request.getRequestURL().toString();
// userAddres is IP adress for user from request
String userAddress = request.getRemoteAddr();
// userAgent is userAgent from request header
String userAgent = request.getHeader("user-agent");

LinkedHashMap<String, String> parameters = new LinkedHashMap<String, String>();
parameters.put("userName", "test");
parameters.put("ts", timestamp);
parameters.put("referer", referer);
parameters.put("userAddress", userAddress);
parameters.put("userAgent", userAgent);

MuseProxyHMAC museProxyHMAC = new MuseProxyHMAC(proxyURL, applicationID, secret, algorithm, separator, parameters);

PrintWriter out = response.getWriter();
out.print(""&lt;a href=\"" + museProxyHMAC.generatedURL + "\" target=\"_blank\"&gt;" + museProxyHMAC.generatedURL + "&lt;/a&gt;"");

where replace MUSE_PROXY_HOST:PORT with your actual Muse Proxy host and port.
The aditional file that needs to be integrated into your Java project can be downloaded from here.