CODEWITHSUNDEEP
javajsonjakarta-eecookiesjax-rs
Bogdan Guta
Bogdan Guta

Reputation: 13

JAX-RS @CookieParam value changes from a request to another

I'm trying to make a resource which adds products into a shopping cart. I'm trying to add a product to the shopping cart and save the shopping cart as JSON String in a cookie. (Here the Cart object has 2 fields, productId and quantity)

@POST
@Path("/update")
@Produces(MediaType.APPLICATION_JSON)
public Response updateShoppingCart(@CookieParam(COOKIE_NAME) javax.ws.rs.core.Cookie cookie, Cart cart) {
    NewCookie newCookie = null;
    ObjectMapper mapper = new ObjectMapper();
    if (cookie !=null){
        try {
            List<Cart> shoppingCart = mapper.readValue(cookie.getValue(), new TypeReference<List<Cart>>() {
            });
            //the case where there is already something in the shopping cart
            //...
            String jsonString = mapper.writeValueAsString(shoppingCart);
            newCookie = new NewCookie(COOKIE_NAME, jsonString,"/", "", "shopping-cart", MAX_AGE, false);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }else{
        List<Cart> carts = new ArrayList<>();
        carts.add(cart);
        try {
            String jsonString = mapper.writeValueAsString(carts);
            newCookie = new NewCookie(COOKIE_NAME, jsonString,"/", "", "shopping-cart", MAX_AGE, false);
        } catch (JsonProcessingException e) {
            e.printStackTrace();
        }
    }
    return Response.ok(newCookie).cookie(newCookie).build();
}

The first time when I run this, the cookie is set correctly for example it sets the correct value: [{\"productId\":1,\"quantity\":2}] if I add a product with the id 1 and quantity 2. The problem is that when I run this a second time the cookie received as CookieParam has an incorrect value, in this case [{\"productId\":1 . I'm testing this with Postman and sending a POST request with the JSON {"productId":1, "quantity":2} in the body. What am I doing wrong?

Upvotes: 1

Views: 796

Answers (1)

Ari Singh
Ari Singh

Reputation: 1296

Cookies have to be put in the header, not the body. Something like:

Cookie: name=value; name2=value2; name3=value3

For postman refer to : https://www.getpostman.com/docs/postman/sending_api_requests/cookies

UPDATE: In my experience, postman sometimes does not send cookies. Try converting postman command to curl command (refer to: https://www.getpostman.com/docs/postman/sending_api_requests/generate_code_snippets) then make sure curl command has the cookie either in the header or in -b parameter (Refer: https://curl.haxx.se/docs/manpage.html)

Upvotes: 1

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