Java Example
<source lang=”java”>
package com.mtgox.api;
import java.net.HttpURLConnection; import java.net.URL; import java.net.URLEncoder; import java.util.HashMap; import java.util.logging.Level; import java.util.logging.Logger; import javax.crypto.Mac; import javax.crypto.spec.SecretKeySpec; import sun.misc.BASE64Decoder; import sun.misc.BASE64Encoder;
public class Client {
protected String key; protected String secret; /**
- @param args the command line arguments
- /
public static void main(String[] args) { Client client = new Client( "your key here", "your secret here" ); HashMap<String, String> query_args = new HashMap<>(); query_args.put("currency", "BTC"); query_args.put("amount", "5.0"); query_args.put("return_success", "https://mtgox.com/success"); query_args.put("return_failure", "https://mtgox.com/failure"); client.query("1/generic/private/merchant/order/create", query_args); } public Client(String key, String secret) { this.key = key; this.secret = secret; } public String query(String path, HashMap<String, String> args) { try { // add nonce and build arg list args.put("nonce", String.valueOf(System.currentTimeMillis())); String post_data = this.buildQueryString(args); // args signature Mac mac = Mac.getInstance("HmacSHA512"); SecretKeySpec secret_spec = new SecretKeySpec((new BASE64Decoder()).decodeBuffer(this.secret), "HmacSHA512"); mac.init(secret_spec); String signature = (new BASE64Encoder()).encode(mac.doFinal(post_data.getBytes())); // build URL URL queryUrl = new URL("https://mtgox.com/api/" + path); // create connection HttpURLConnection connection = (HttpURLConnection)queryUrl.openConnection(); connection.setDoOutput(true); // set signature connection.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; Java Test client)"); connection.setRequestProperty("Rest-Key", this.key); connection.setRequestProperty("Rest-Sign", signature.replaceAll("n", "")); // write post connection.getOutputStream().write(post_data.getBytes()); // read info byte buffer[] = new byte[16384]; int len = connection.getInputStream().read(buffer, 0, 16384); System.out.print(new String(buffer, 0, len, "UTF-8")); } catch (Exception ex) { Logger.getLogger(Client.class.getName()).log(Level.SEVERE, null, ex); } return "foo"; } protected String buildQueryString(HashMap<String, String> args) { String result = new String(); for (String hashkey : args.keySet()) { if (result.length() > 0) result += '&'; try { result += URLEncoder.encode(hashkey, "UTF-8") + "=" + URLEncoder.encode(args.get(hashkey), "UTF-8"); } catch (Exception ex) { Logger.getLogger(Client.class.getName()).log(Level.SEVERE, null, ex); } } return result; } }
</source>