Code for a standalone usage of the Mailjet API in JAVA

README.md

How to use it

• In your root directory, copy the Makefile
• Create a src folder and copy the file HttpURLConnectionMailjet.java into it
• You will need the commons-codec.jar file. Download it from http://commons.apache.org/proper/commons-codec/download_codec.cgi.
• Create a lib folder and download the file commons-codec.jar into this folder
• Fill your Mailjet API Keys (line 20-21) in the file HttpURLConnectionMailjet.java
• Then just performe a make

HttpURLConnectionMailjet.java

/**
 * Code for a standalone usage of the mailjet API
 */

//some import
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import org.apache.commons.codec.binary.Base64;

import javax.net.ssl.HttpsURLConnection;


//class definition
public class HttpURLConnectionMailjet {

	private final String USER_AGENT = "Mozilla/5.0";
	private final String MJ_APIKEY_PUBLIC = "FIXME";
	private final String MJ_APIKEY_PRIVATE = "FIXME";

	public static void main(String[] args) throws Exception {

		HttpURLConnectionMailjet http = new HttpURLConnectionMailjet();

		System.out.println("Testing 1 - Send Http GET request");
		http.sendGet();

		// System.out.println("\nTesting 2 - Send Http POST request");
		// http.sendPost();

	}

	// HTTP GET request
	private void sendGet() throws Exception {

		String url = "https://api.mailjet.com/v3/REST/listrecipient";

		URL obj = new URL(url);
		HttpURLConnection con = (HttpURLConnection) obj.openConnection();

		// optional default is GET
		con.setRequestMethod("GET");

		//add request header
		con.setRequestProperty("User-Agent", USER_AGENT);

		String authString = MJ_APIKEY_PUBLIC + ":" + MJ_APIKEY_PRIVATE;
		System.out.println("auth string: " + authString);
		byte[] authEncBytes = Base64.encodeBase64(authString.getBytes());
		String authStringEnc = new String(authEncBytes);
		System.out.println("Base64 encoded auth string: " + authStringEnc);

		con.setRequestProperty("Authorization", "Basic " + authStringEnc);

		int responseCode = con.getResponseCode();
		System.out.println("\nSending 'GET' request to URL : " + url);
		System.out.println("Response Code : " + responseCode);

		BufferedReader in = new BufferedReader(
		        new InputStreamReader(con.getInputStream()));
		String inputLine;
		StringBuffer response = new StringBuffer();

		while ((inputLine = in.readLine()) != null) {
			response.append(inputLine);
		}
		in.close();

		//print result
		System.out.println(response.toString());

	}

	// HTTP POST request
	private void sendPost() throws Exception {

		String url = "https://api.mailjet.com/v3/REST/contact";
		URL obj = new URL(url);
		HttpsURLConnection con = (HttpsURLConnection) obj.openConnection();

		//add reuqest header
		con.setRequestMethod("POST");
		con.setRequestProperty("User-Agent", USER_AGENT);
		con.setRequestProperty("Accept-Language", "en-US,en;q=0.5");

		String authString = MJ_APIKEY_PUBLIC + ":" + MJ_APIKEY_PRIVATE;
		System.out.println("auth string: " + authString);
		byte[] authEncBytes = Base64.encodeBase64(authString.getBytes());
		String authStringEnc = new String(authEncBytes);
		System.out.println("Base64 encoded auth string: " + authStringEnc);

		String urlParameters = "Param1=C02G8416DRJM&Param2=&locale=&Param3=&param4=12345";

		// Send post request
		con.setDoOutput(true);
		DataOutputStream wr = new DataOutputStream(con.getOutputStream());
		wr.writeBytes(urlParameters);
		wr.flush();
		wr.close();

		int responseCode = con.getResponseCode();
		System.out.println("\nSending 'POST' request to URL : " + url);
		System.out.println("Post parameters : " + urlParameters);
		System.out.println("Response Code : " + responseCode);

		BufferedReader in = new BufferedReader(
		        new InputStreamReader(con.getInputStream()));
		String inputLine;
		StringBuffer response = new StringBuffer();

		while ((inputLine = in.readLine()) != null) {
			response.append(inputLine);
		}
		in.close();

		//print result
		System.out.println(response.toString());

	}

}

makefile

all:
	javac -cp lib/commons-codec-1.10.jar src/HttpURLConnectionMailjet.java
	cd src && java -cp ../lib/commons-codec-1.10.jar:. HttpURLConnectionMailjet

clean:
	rm src/HttpURLConnectionMailjet.class