Question

I am required to input start time and end time and in swing java that I will further send to a URL to get some selected nodes created in this time using GET REST call.
URL is:

http://wisekar.iitd.ernet.in/active/api_resources.php/method/mynode
    ?key=YOUR_API_KEY_HERE
    &startTime=START_TIME[Optional]
    &endTime=END_TIME[Optional]en

The website will take take the input (time stamps) as they are given in the image.

Screenshot Of my window

Now my code is here:

class Algorithm extends JFrame implements ActionListener {

    private static String ENDPOINT =
            "http://wisekar.iitd.ernet.in/active/api_"
            + "resources.php/method/mynode.json?key=api_key";

    Algorithm() {
       // label1 = new JLabel();.....

        panel = new JPanel(new GridLayout(5, 2));
        //adding in panel label1,text1 ... 
        add(panel, BorderLayout.CENTER);
        SUBMIT.addActionListener(this);
        setTitle("Optimal Travel Route");
    }

    public void actionPerformed(ActionEvent ae) {
        try {
            //String value1 = text1.getText();..

            URL url = new URL(ENDPOINT + "&datasetId=" + value3
                    + "&startTime=" + value1 + "&endTime=" + value2);
            System.out.println(url);
            HttpURLConnection httpCon;
            httpCon = (HttpURLConnection) url.openConnection();
            httpCon.setDoInput(true);
            System.out.println(httpCon.getResponseCode());
            System.out.println(httpCon.getResponseMessage());
            BufferedReader in = new BufferedReader(new InputStreamReader(
                    httpCon.getInputStream()));
            String inputLine;
            while ((inputLine = in.readLine()) != null) {
                System.out.println(inputLine);
            }
            in.close();
        } catch (IOException ex) {
            Logger.getLogger(Algorithm.class.getName()).log(Level.SEVERE, null, ex);
        }
    }
}

class AlgorithmDemo {

    public static void main(String arg[]) {
        try {
            Algorithm frame = new Algorithm();
            frame.setSize(450, 200);
            frame.setVisible(true);
        } catch (Exception e) {
            JOptionPane.showMessageDialog(null, e.getMessage());
        }
    }
}

I have tried everything; I have commented it. Using this code, I am getting the nodes when I am typing the generated URL in the browser, but it is not giving the result on the console when I am printing. What is wrong in my code? Can someone tell me how should date and time should be passed to the GET. Please help. When I only input the data set ID, it gives me all the nodes of that data set ID. According to me, there is some problem in passing the time stamps.

Answer 1

Unfortunately when I ran a quick test I got an unauthorized response.
But it looks like the issue is the string is not url safe.
Yo need to ensure your spaces are converted to %20.
This will also be why it works using and browser as the browser address bar will do this for you behind the scenes.
If you use:

String urlSafeValue1 = URLEncoder.encode(value1, "UTF-8");
String urlSafeValue2 = URLEncoder.encode(value2, "UTF-8");
String urlSafeValue3 = URLEncoder.encode(value3, "UTF-8");

The arguments will be made url safe.