Can't Deserialize JSON in Java Servlet

Question

My endpoint can't make sense of incoming JSON. Here's the endpoint: ``` import javax.ws.rs.Consumes; import javax.ws.rs.DefaultValue; import javax.ws.rs.GET; import javax.ws.rs.POST; import javax.ws.rs.Path; import javax.ws.rs.PathParam; import javax.ws.rs.Produces; import javax.ws.rs.QueryParam; import javax.ws.rs.core.MediaType; import javax.ws.rs.core.Response; import org.hibernate.Query; import org.hibernate.Session; import org.json.JSONObject; ... @POST @Path("/{department}/{team}") @Consumes(MediaType.APPLICATION_JSON) @Produces(MediaType.APPLICATION_JSON) public Response handleJSON(JSONObject json , @PathParam("department") String department, @PathParam("team") String team){ MyObj myObj = new MyObj(); myObj.setDepartment(department); myObj.setTeam(team); myObj.setPlatform(json.optString("platform")); saveObj(myObj); return Response.ok(true).build(); } ``` I'm posting JSON containing the key/value for "platform" using Postman, with header: `Content-Type` as `application/json` Bu…

Accepted Answer

This might not be an ideal solution, but i do think it could work.

Hopefully you have the Jackson JSON dependency already...

you can find it here: http://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-core

I would try the following code:

```
@POST
@Path("/{department}/{team}")
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
public Response handleJSON(String json, @PathParam("department") String department,       @PathParam("team") String team){

ObjectMapper mapper = new ObjectMapper();
    JsonNode node = mapper.readValue(json, JsonNode.class);

MyObj myObj = new MyObj();

myObj.setDepartment(department);
    myObj.setTeam(team);

if (node.get("platform") != null) {
        myObj.setPlatform(node.get("platform").textValue());
    }

saveObj(myObj);

return Response.ok(true).build();

}
```

Notice that I am asking your WS Framework to just pass me the JSON as a String and just handling it myself. Maybe its not ideal, but should work.

Cheers!

Can't Deserialize JSON in Java Servlet

Solution

Problem