Example usage for com.google.gson Gson toJson

List of usage examples for com.google.gson Gson toJson

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Introduction

In this page you can find the example usage for com.google.gson Gson toJson.

Prototype

public String toJson(JsonElement jsonElement)

Source Link

Document

Converts a tree of JsonElement s into its equivalent JSON representation.

Usage

From source file:AOP.java

public static void main(String[] args) throws Exception {
    RequestController rc = new RequestController();

    rt = Runtime.instance();/*from w ww  . j a  va2  s . c  om*/

    World world = new World();

    int prisonerCount = 8;
    String[] prisonerNames = { "Randy", "Stan", "Kyle", "Eric", "Kenny", "Chef", "Butters", "MrMackey" };

    createContainer();

    Random rand = new Random(System.currentTimeMillis());

    Gson gson = new Gson();
    String json = gson.toJson(world);
    rc.sendPostReq(0, json);

    try {
        for (int i = 0; i < prisonerCount; i++) {
            Object[] agentArgs = new Object[3];
            agentArgs[0] = world;
            agentArgs[1] = world.getRooms().get(0);
            agentArgs[2] = new Point(rand.nextInt(199), rand.nextInt(199));

            mainContainer.createNewAgent(prisonerNames[i], "aop.agents.Prisoner", agentArgs).start();
        }

    } catch (StaleProxyException ex) {
        Logger.getLogger(AOP.class.getName()).log(Level.SEVERE, null, ex);
    }
}

From source file:InventoryDeleteItemServlet.java

License:Open Source License

@Override
public HttpResponse doWork(HttpRequest request, String rootDirectory) {
    HttpResponse response;//from ww  w . j a  v a 2 s  .  co m
    try {
        String inventoryUrl = "./web/inventory.json";
        File inventory = new File(inventoryUrl);

        StringBuilder sb = new StringBuilder();
        Scanner sc = new Scanner(inventory);
        while (sc.hasNext()) {
            sb.append(sc.nextLine());
        }
        sc.close();

        // Add this new book to the list of existing books
        Gson gson = new Gson();
        InventoryObject[] inventoryArray = gson.fromJson(sb.toString(), InventoryObject[].class);
        ArrayList<InventoryObject> inventoryList = new ArrayList<InventoryObject>(
                Arrays.asList(inventoryArray));

        String body = new String(request.getBody());
        System.out.println(body);

        // Find existing item and remove it
        int id = Integer.parseInt(body.split("=")[1]);
        for (InventoryObject item : inventoryList) {
            if (item.getID() == id) {
                inventoryList.remove(item);
                break;
            }
        }

        // Serialize new list
        Gson gsonBuilder = new GsonBuilder().setPrettyPrinting().create();
        String arrayListToJson = gsonBuilder.toJson(inventoryList);

        BufferedWriter bw = new BufferedWriter(new FileWriter(inventory));
        bw.write(arrayListToJson);
        bw.close();

        response = HttpResponseFactory.create200OK(inventory, Protocol.CLOSE);
    } catch (Exception e) {
        response = HttpResponseFactory.create404NotFound(Protocol.CLOSE);
    }
    return response;
}

From source file:LanguageServlet.java

@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    //Define action
    String action = request.getParameter("action");
    //Define data
    String data = request.getParameter("data");

    //Create locale object
    Locale locale = null;// w w w .  j a v  a  2  s. c  om
    //Create resource bundle object
    ResourceBundle resourceBundle = null;

    //Create key - value pair collection for response
    Map<String, String> map = new HashMap<String, String>();

    //Here i use Gson library for working with Json
    Gson gson = new GsonBuilder().create();

    //Based on action i can switch to different options.
    //I print predefined text to output just for debugging
    try {
        if (action.equals("changeLang")) {
            if (data.equals("en")) {
                locale = new Locale("en", "EN");
                resourceBundle = ResourceBundle.getBundle("i18n.Bundle", locale);
                System.out.println(resourceBundle.getString("NAME"));
                System.out.println(resourceBundle.getString("LAST_NAME"));
                System.out.println(resourceBundle.getString("LANGUAGE"));
            } else if (data.equals("ru")) {
                locale = new Locale("ru", "RU");
                resourceBundle = ResourceBundle.getBundle("i18n.Bundle", locale);
                System.out.println(resourceBundle.getString("NAME"));
                System.out.println(resourceBundle.getString("LAST_NAME"));
                System.out.println(resourceBundle.getString("LANGUAGE"));
            } else if (data.equals("de")) {
                locale = new Locale("de", "DE");
                resourceBundle = ResourceBundle.getBundle("i18n.Bundle", locale);
                System.out.println(resourceBundle.getString("NAME"));
                System.out.println(resourceBundle.getString("LAST_NAME"));
                System.out.println(resourceBundle.getString("LANGUAGE"));
            }
        }
        //Put data to collection.Keys are equals to index.html label's id values.
        map.put("name", resourceBundle.getString("NAME"));
        map.put("lastname", resourceBundle.getString("LAST_NAME"));
        map.put("language", resourceBundle.getString("LANGUAGE"));

        //Send response to browser.
        response.getWriter().write(gson.toJson(map));
    } catch (Exception e) {
        e.printStackTrace();
    }

}

From source file:MainFrame.java

private void jMenuItem4ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItem4ActionPerformed
    Gson gson = new Gson();
    String json = gson.toJson(umlDesigner1.getProject());
    JFileChooser chooser = new JFileChooser();
    if (chooser.showSaveDialog(this) != JFileChooser.APPROVE_OPTION) {
        return;//from www  .java  2  s . c  o  m
    }
    File file = chooser.getSelectedFile();
    if (file == null) {
        return;
    }

    FileWriter writer = null;
    try {
        writer = new FileWriter(file);
        writer.write(json);
    } catch (IOException ex) {
        JOptionPane.showMessageDialog(this, "File Not Saved", "ERROR", JOptionPane.ERROR_MESSAGE);
    } finally {
        if (writer != null) {
            try {
                writer.close();
            } catch (IOException x) {
            }
        }
    }
}

From source file:RunnerRepository.java

License:Apache License

public static void generateJSon() {
    JsonObject root = new JsonObject();
    JsonObject array = new JsonObject();
    array.addProperty("Embedded", "embedded");
    array.addProperty("DEFAULT", "Embedded");
    JsonObject array2 = new JsonObject();
    array2.addProperty("NimbusLookAndFeel", "javax.swing.plaf.nimbus.NimbusLookAndFeel");
    array2.addProperty("MetalLookAndFeel", "javax.swing.plaf.metal.MetalLookAndFeel");
    array2.addProperty("MotifLookAndFeel", "com.sun.java.swing.plaf.motif.MotifLookAndFeel");
    array2.addProperty("WindowsLookAndFeel", "com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
    array2.addProperty("JGoodiesWindowsLookAndFeel", "com.jgoodies.looks.windows.WindowsLookAndFeel");
    array2.addProperty("Plastic3DLookAndFeel", "com.jgoodies.looks.plastic.Plastic3DLookAndFeel");
    array2.addProperty("PlasticXPLookAndFeel", "com.jgoodies.looks.plastic.PlasticXPLookAndFeel");
    array2.addProperty("DEFAULT", "MetalLookAndFeel");
    root.add("plugins", new JsonArray());
    root.add("editors", array);
    root.add("looks", array2);
    root.add("layout", new JsonObject());
    try {//from w  w  w. j  ava 2s.c  o  m
        FileWriter writer = new FileWriter(TWISTERINI);
        Gson gson = new GsonBuilder().setPrettyPrinting().create();
        writer.write(gson.toJson(root));
        writer.close();
    } catch (Exception e) {
        System.out.println("Could not write default JSon to twister.conf");
        e.printStackTrace();
    }
    System.out.println("twister.conf successfully created");
}

From source file:State_Servlet.java

/**
 * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
 * methods.//from  w w w .  j  a  va  2 s  . co  m
 *
 * @param request servlet request
 * @param response servlet response
 * @throws ServletException if a servlet-specific error occurs
 * @throws IOException if an I/O error occurs
 */
protected void processRequest(HttpServletRequest request, HttpServletResponse response) {
    response.setContentType("text/html;charset=UTF-8");
    try (PrintWriter out = response.getWriter()) {

        /* TODO output your page here. You may use following sample code. */

        /*  out.println("<!DOCTYPE html>");
          out.println("<html>");
          out.println("<head>");
          out.println("<title>Servlet java</title>");            
          out.println("</head>");
          out.println("<body>");
          out.println("<h1>Servlet java at " + request.getContextPath() + "</h1>");
          out.println("</body>");
          out.println("</html*/
        try {
            String JDBC_driver = "com.mysql.jdbc.Driver";
            String DB_URL = "jdbc:mysql://localhost:3306/wheels_on_rent";
            Class.forName(JDBC_driver);
            String db_user = "root";
            String db_pass = "";

            Connection conn = DriverManager.getConnection(DB_URL, db_user, db_pass);
            String query = "SELECT DISTINCT `State/Union Territory` FROM `india_states_cities` ";
            PreparedStatement pst = conn.prepareStatement(query);
            ResultSet rs = pst.executeQuery();

            String json;
            ArrayList<State> listStates = new ArrayList<State>();
            while (rs.next()) {
                State s = new State();
                s.setState_name(rs.getString("State/Union Territory"));
                listStates.add(s);
                //s.setCity_name(rs.getString("City"));

            }
            Gson g = new Gson();

            json = g.toJson(listStates);
            out.print(json);

            rs.close();
            pst.close();
            conn.close();
        } catch (Exception ex) {
            out.print("error" + ex.getMessage());
        }
    } catch (IOException ex) {
        Logger.getLogger(State_Servlet.class.getName()).log(Level.SEVERE, null, ex);
    }

}

From source file:contactDAO.java

@GET
@Path("/add")
public String addContact(@QueryParam("myEmail") String myEmail, @QueryParam("fEmail") String fEmail) {

    JsonObject jsonResponse = new JsonObject();

    /////// 0. Extract My ID from DB
    int userID = getUserId(myEmail);

    if (userID == -1) {
        //// internal error in DB
        jsonResponse.addProperty("status", "failed");
        jsonResponse.addProperty("result", "Errors with our Servers, Try again later!");

    } else {//from w ww . j a v  a2 s . com

        /////// 1. Check if user already exists
        EntityManager entityManager = entityManagerFactory.createEntityManager();
        Query query = entityManager.createNamedQuery("User.findByEmail").setParameter("email", fEmail);
        List<User> users = query.getResultList();

        if (!users.isEmpty()) {
            /////// 2. if YES
            ////////////////////////// add to contacts and return POSITIVE response

            User friend = users.get(0);

            int friendId = friend.getId();
            Contact contact = new Contact(userID, friendId);

            entityManager.getTransaction().begin();
            entityManager.persist(contact);
            entityManager.getTransaction().commit();

            ///// prepare response as JSON
            jsonResponse.addProperty("status", "success");

            Gson gson = new Gson();
            jsonResponse.addProperty("result", gson.toJson(friend));

        } else {
            /////// 3. if NO
            /////////////////////// return user not found NEGATIVE response
            jsonResponse.addProperty("status", "failed");
            jsonResponse.addProperty("result", "Corresponding user is not fount, Check his email");

        }

    }

    return jsonResponse.toString();
}

From source file:HyperLogLog.java

public String ToJson() {
    Gson g = new Gson();
    JsonObject elm = new JsonObject();
    elm.addProperty("M", this.m);
    elm.addProperty("B", this.b);
    elm.addProperty("A", this.alpha);
    JsonArray registerArr = new JsonArray();
    for (int i = 0; i < registers.length; i++) {
        registerArr.add(new JsonPrimitive(registers[i]));
    }// w  w  w  .  ja  v  a 2 s  . c  o m
    elm.add("R", registerArr);
    return g.toJson(elm);
}

From source file:MainPublicacao.java

public static void main(String[] args) {
    ///////////////////////////feeddenoticia-INSERIR///////////////////////////////////         
    //esta returnando codigo 204 porem inseri
    ///*/*from   w  w w.  j  av a2 s .c o  m*/
    String localidade = "centro4";
    String descricao = "buraco";
    String categoria = "infra-estrutura";
    Date data = Date.from(Instant.now());
    // long idUsuario = 2;

    JSONObject jsonObject = new JSONObject();

    //Armazena dados em um Objeto JSON
    jsonObject.put("localidade", localidade);
    jsonObject.put("descricao", descricao);
    jsonObject.put("categoria", categoria);
    jsonObject.put("data", data);
    //jsonObject.put("idUsuario", idUsuario);           

    Gson gson = new Gson();
    String Json = gson.toJson(jsonObject);

    URL url;
    try {
        url = new URL("http://localhost:8084/web/webresources/webService/feed/inserir");

        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setDoOutput(true);
        connection.setRequestMethod("POST");
        connection.setRequestProperty("Content-Type", "application/json");

        OutputStream os = connection.getOutputStream();
        os.write(Json.getBytes("UTF-8"));
        os.flush();

        int code = connection.getResponseCode();
        System.out.println(code + " - " + Json);

        os.close();
        connection.disconnect();

    } catch (MalformedURLException ex) {
        JOptionPane.showMessageDialog(null, "erro de URLException conexao ao rest ( salvar cliente)\n" + ex);
    } catch (IOException ex) {
        JOptionPane.showMessageDialog(null, "erro de IOException conexao ao rest ( salvar cliente) \n" + ex);
    }
}

From source file:ListAction.java

@Override
public void execute(HttpServletRequest request, PrintWriter out, File folder) {

    try {/*  www .  j  ava2  s .c  o m*/
        String type = request.getParameter("type");

        JsonArray list = new JsonArray();

        switch (type) {
        case "movie":
            File[] movies = Service.listAllMovies(folder);

            for (int i = 0; i < movies.length; i++) {
                JsonObject m = new JsonObject();
                m.addProperty("title", movies[i].getName());
                list.add(m);
            }

            break;

        case "series":
            File[] series = Service.listAllSeries(folder);

            for (int i = 0; i < series.length; i++) {
                JsonObject m = new JsonObject();
                m.addProperty("title", series[i].getName());
                list.add(m);
            }

            break;

        case "episode":
            String series_title = request.getParameter("series");

            folder = new File(folder.getAbsolutePath() + "\\Series\\" + series_title);

            List<File> episodes = Service.listAllEpisodes(folder);

            for (File f : episodes) {
                JsonObject episode = new JsonObject();

                String title = f.getName().split(" - ")[0];

                episode.addProperty("title", series_title + " - " + title);

                list.add(episode);
            }

            break;
        }

        JsonObject container = new JsonObject();

        container.add("list", list);

        Gson gson = new GsonBuilder().setPrettyPrinting().create();
        String json = gson.toJson(container);
        out.println(json);
    } catch (Exception e) {
        throw e;
    }
}