CODEWITHSUNDEEP
javajsonrestjersey
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Reputation: 424

Simple Rest to return Json using jersey

Hi I'm trying to return Json from a method in a simple rest using Jersey

HelloWorldService.class

  @Path("/hello")
    public class HelloWorldService {
        
        @GET
        @Path("/empdetail/{id}")
        @Produces(MediaType.APPLICATION_JSON)
        public EmpDetailsVo getEmpDetails(@PathParam("id") String id){
            
            EmpDetailsVo details = new EmpDetailsVo();
            details.empId="1202";
            details.empName="Akhi";
            details.empAddress="123 Main St. Newark PA 19121";
            return details;
            
        }
    }

EmpDetailsVo class has getter and setters for empId, name and address.

When I try to run this url:

http://localhost:8080/jerseyRest/rest/hello/empdetail/1202

I get Http status 500.

And on console I see an error:

SEVERE: A message body writer for Java class jerseyRest.EmpDetailsVo, and Java type class jerseyRest.EmpDetailsVo, and MIME media type application/json was not found

And

javax.ws.rs.WebApplicationException: com.sun.jersey.api.MessageException: A message body writer for Java class jerseyRest.EmpDetailsVo, and Java type class jerseyRest.EmpDetailsVo, and MIME media type application/json was not found

Can someone please help.

Upvotes: 2

Views: 8394

Answers (1)

FrobberOfBits
FrobberOfBits

Reputation: 18022

You need to tell Jersey how to marshal and unmarshal objects from the EmpDetailsVo type into JSON.

Check this tutorial for an example of how this can be done. Here's another example using a different approach. Investigate the use of the com.sun.jersey.api.json.POJOMappingFeature parameter provided to your web application via web.xml, and that should get you there.

Upvotes: 3

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