Using @Consume with GET request in Jersey Rest

问题

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

回答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;

回答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?

回答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

回答4:

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.

回答5:

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;

来源：https://stackoverflow.com/questions/9993736/using-consume-with-get-request-in-jersey-rest