auth.js

var Client = require('node-rest-client').Client;
 
// direct way 
var client = new Client();
var authorization;
var current_data;

var login_args = {
    data: {username: "kenzan", password: "kenzan" },
    headers: { "Content-Type": "application/json" }
};

var username = process.argv[2];
var password = process.argv[3];

client.post("http://localhost:8080/Kenzan/rest/login", {data: {username: username, password: password}, headers: {"Content-Type": "application/json" } },
    function (data, response) {
      if(data.jwt == null)
        console.log("Unable to obtain JSON web token");
      else if(data.error != null)
        console.log("Invalid error message: " + data.error);
      else
        console.log(data.jwt);
    });