Chapter 9. @FormParam
When the input request body is of the type
application/x-www-form-urlencoded (that is, an HTML form), you can inject individual form parameters from the request body into method parameter values.
<form method="POST" action="/resources/service"> First name: <input type="text" name="firstname"> <br> Last name: <input type="text" name="lastname"> </form>
If you post using this form, the service would look as follows:
@Path("/")
public class NameRegistry {
@Path("/resources/service")
@POST
public void addName(@FormParam("firstname") String first, @FormParam("lastname") String last) {...}
You cannot combine
@FormParam with the default application/x-www-form-urlencoded that unmarshalls to a MultivaluedMap<String, String> That is, the following would be illegal:
@Path("/")
public class NameRegistry {
@Path("/resources/service")
@POST
@Consumes("application/x-www-form-urlencoded")
public void addName(@FormParam("firstname") String first, MultivaluedMap<String, String> form) {...}
