Pass the array as a parameter to the JAX-RS resource

Question

I have many parameters that can be transferred to the server using JAX-RS.

Is there a way to pass or AarryList with a URL?

Answer 1

You have several options.

Option 1: query parameter with multiple values

You can provide several simple values ​​for one query parameter. For example, a query string might look like this:

PUT /path/to/my/resource?param1=value1¶m1=value2¶m1=value3

Here, the param1 query parameter has three values, and the container will give you access to all three values ​​as an array (see Query String Line ).

Option 2: provide complex data in a PUT package

If you need to send complex data to a PUT request, this is usually done by delivering this content to the request body. Of course, this payload can be xml (and linked via JAXB).

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Remember that the point of the URI is the identification of the resource ( RFC 3986, 3.4 ), and if this array of values ​​is the data that is needed to identify the resource, then the URI is a good place to do this. If, on the other hand, this data array is part of a new view that is sent in this PUT request, then it belongs to the request body.

Having said that, if you really do not need an array of simple values, I would recommend choosing option 2. I can not come up with a good reason to use URL-encoded XML in the URL, d be interested to know more about what exactly this data is.

Answer 2

We can get request parameters and corresponding values ​​in the form of a Map,

 @GET @Produces(MediaType.APPLICATION_JSON) public void test(@Context UriInfo ui) { MultivaluedMap<String, String> map = ui.getQueryParameters(); String name = map.getFirst("name"); String age = map.getFirst("age"); System.out.println(name); System.out.println(age); }