Passing String parameter and object in Post request to a RESTful service

Question

I have a client side method:

@SuppressWarnings("unchecked")
public static void main(String[] args){
    mediaTracker = new MediaTracker(frame);

    Dimension dim = Toolkit.getDefaultToolkit().getScreenSize();
    frame.setSize(dim.width, dim.height);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setVisible(true);

    setFullScreen();

    RSACipher rsaCipher = new RSACipher();
    // client side code
    RSAKeyPair keyPair;
    try {
        keyPair = new RSAKeyPair(2048);

        String servletURL = "http://localhost:8080/AesRsaEncryptionServiceRest/aesrsarest/doc/encryptionservice?pkey=pkey&skey=skey";

        Gson gson = new GsonBuilder().create();

        URL servlet = null;
        try {

            servlet = new URL(servletURL);
            System.out.println("Sending request to " + servletURL);
            HttpURLConnection servletConnection = (HttpURLConnection) servlet.openConnection();
            servletConnection.setRequestMethod("POST");
            servletConnection.setDoOutput(true);
            servletConnection.setDoInput(true);


            //send the keys to the server
            ObjectOutputStream objOut = new ObjectOutputStream(servletConnection.getOutputStream());

            objOut.writeObject(keyPair.getPublicKey());

            objOut.flush();
            objOut.close();

In line ObjectOutputStream objout, I passed the publickey needed for encryption. I want to know, if it's possible to pass a String parameter with object to post method?

I tried to create a new object, then I put the String parameters and the public key object and passed to an object stream, but it did not work. I needed the String parameters for passing the filename to be encrypted using the RESTful service

the code i post, it is passing an object using objectoutputsream and the object is public key which is generated from rsa... i dont think it is in json type... If it will be possible to put the public key in json format maybe i can passed json object with public key inside together with string for the file name to a restful service... — George
– George, Commented Mar 17, 2016 at 23:52

Darshan Mehta · Accepted Answer · 2016-03-17 23:57:28Z

1

Assuming it's a json request, we can use any json parser (i.e. Gson, Jackson etc) to convert object into json and POST it to url. Below is an example to pass a Map(object) using Jackson.

OutputStreamWriter out = new   OutputStreamWriter(servletConnection.getOutputStream());
ObjectMapper mapper = new ObjectMapper(); //Jackson Object mapper
Map<String, Object> data = new HashMap<String, Object>();
data.put("key", "value");
out.write(mapper.writeValueAsString(data));

Similarly, we can convert any object into json and send it in payload.

answered Mar 17, 2016 at 23:57

Darshan Mehta

31k14 gold badges75 silver badges111 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Passing String parameter and object in Post request to a RESTful service

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related