Using #Consume with GET request in Jersey Rest - jsonp

Question

I'm trying to bind values in a GET request to a POJO.
The values are parameters in a HTTP GET request. I'm using JSONP to pass the parameters however it looks like JSONP pushes the JSON object up onto the Request line so its not really a JSON object which is being sent but instead just name value pairs on the URL.
Is it possible to map the values in my GET request to a POJO? Jersey gives the following exception when i try binding
A HTTP GET method, public void handleJSONP(MyPojo), should not consume any entity.
The binding code is looking in the request body however it doesnt exist because it is a GET request. Is there any other way to bind the values in the request without having to manually include a #QueryParam entry for each ?
Thanks

Answer 1

I was able resolve this by using #com.sun.jersey.api.core.InjectParam of jersey
public JSONWithPadding doSomething(#InjectParam final MyPojo argPojo)
Then the Pojo looks like this
public class MyPojo
{
/** */
#QueryParam("value1")
private String value1;
/** */
#QueryParam("value2")
private String value2;
/** */
#QueryParam("value3")
private List<String> value3;

Answer 2

HTTP GET by specification includes the parameters in the URL - therefore it only accepts value pairs. So, what you are trying to do is not feasible. why don't you use a POST instead to bundle a JSON object together with the request?

Answer 3

I am proposing a more expanded example.
jQuery client side:
var argPojo = {
callback:"myPojoCallback",
value1:"val1",
value2:"val2",
value3:["val1", "val2", "val3"]
};
var url = 'xxx.xx.xx.xx/testPojo';
$.ajax({
type: 'GET',
async: false,
jsonpCallback: argPojo.callback,
url: url,
data:argPojo,
contentType: "application/json",
dataType: 'jsonp',
beforeSend:function(){
console.log("sending:",argPojo);
},
success: function(response) {
console.log("reciving",response);
},
error: function(e) {
console.error("error",e);
}
});
on the server
#Path("testPojo")
#GET
#Consumes(MediaType.APPLICATION_JSON)
#Produces("application/x-javascript")
public JSONWithPadding testPojo(#InjectParam MyPojo argPojo){
System.out.println(argPojo);
System.out.println(argPojo.callback);
System.out.println(argPojo.value1);
System.out.println(argPojo.value2);
System.out.println(argPojo.value3);
return new JSONWithPadding(argPojo, argPojo.callback);
}
the actual class object
public class MyPojo {
#QueryParam("callback")
public String callback;
#QueryParam("value1")
public String value1;
#QueryParam("value2")
public String value2;
#QueryParam("value3[]")
public List<String> value3;
public MyPojo(){}
}
chrome console result
sending: Object
callback: "myPojoCallback"
value1: "val1"
value2: "val2"
value3: Array[3]
__proto__: Object
receiving Object
callback: "myPojoCallback"
value1: "val1"
value2: "val2"
value3: Array[3]
__proto__: Object

Answer 4

As we know GET request cannot consume any entity, we need to pass each parameter as params. To be simple we can do like the below using javax.ws.rs.BeanParam
(We can use the #BeanParam instead of #InjectParam
public JSONWithPadding doSomething(#BeanParam final MyPojo argPojo)
....
public class MyPojo
{
/** */
#QueryParam("value1")
private String value1;
/** */
#QueryParam("value2")
private String value2;
/** */
#QueryParam("value3")
private List<String> value3;

Answer 5

GET request cannot consume any entity.
Instead, use POST or PUT methods (provided request is for insert or update).
Otherwise, go with standard way of passing attributes in URL.