Parse request parameters without writing wrapper class

问题

How to handle json requests and parse the request parameters in dropWizard?

@POST
@Path("/test")
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
public String test(@Context final HttpServletRequest request) {
    JSONObject data=new JSONObject();
    System.out.println(request);
    System.out.println(request.getParameterMap());
    System.out.println(">>>>>>>>>");

    return "{\"status\":\"ok\"}";
}

I wrote the above code and tried the following request.

curl -XPOST  -H "Content-Type: application/json" --data {"field1":"val1", "field2":"val2"} http://localhost:8080/test

But request.getParameterMap() is {}

How to parse the parameters without writing a wrapper class?

回答1:

Your curl command may need some additional quotes around the data (I'm getting an error without them):

curl -H "Content-type: application/json" -X POST -d '{"field1":"tal1", "field2":"val2"}' http://localhost:8080/test

You are sending a POST request without URL parameters. I'm not sure why you are expecting to see something there.

I don't know which version of dropwizard you are using but I couldn't make the combination of @POST and @Path("/something") annotation to behave when a method is annotated. I'm getting HTTP ERROR 404.

To make it work I have to move the @Path annotation to the resource/class level and leave only the @Post annotation at the method.

@Path("/test")
public class SimpleResource {

    @POST
    @Consumes(MediaType.APPLICATION_JSON)
    public String test(final String data) throws IOException {
        System.out.println("And now the request body:");
        System.out.println(data);
        System.out.println(">>>>>>>>>");

        return "{\"status\":\"ok\"}";
    }
}

To get the body of the request as String just do as above. Taken from here: How to get full REST request body using Jersey?

The console looks like:

INFO  [2016-11-24 15:26:29,290] org.eclipse.jetty.server.Server: Started @3539ms
And now the request body:
{"field1":"tal1", "field2":"val2"}
>>>>>>>>>

来源：https://stackoverflow.com/questions/40784962/parse-request-parameters-without-writing-wrapper-class

标签

jersey

dropwizard

pojo