在 Postman 的请求正文中传递多个 JSON 数据并使用 Jersy(JXRS) 进入 Java Rest API

Question

I want to get multiple JSON data which I am passing into Postman in Body as Json format.

If I am passing single json data like : "{"firstName":"riya","lastName":"soni"}" so I can get it in my Java API mentioned as below :

@Path("patient")
@POST
@Consumes(MediaType.APPLICATION_JSON)
public String getPatient(Patient patient) {
System.out.println(patient.getFirstName());
System.out.println(patient.getLastName());
return "ok";
}

It is working properly. But if I want to pass data like [{"firstName":"riya","lastName":"soni"},{"firstName":"shreya","lastName":"patel"}]

and getting in API like below :

@Path("patientDetail")
@POST
@Consumes(MediaType.APPLICATION_JSON)
public String getPatientDetails(@RequestBody List<Patient> patient) {
for (Patient p : patient) {
System.out.println(p.getFirstName());
System.out.println(p.getLastName());
}
return "ok";
}

When I am hitting request from postman by passing multiple JSON data as I have mentioned, even getPateintDetails method is not calling, how to pass and get multiple json data in Rest API. Please give me the solution or reference link for the same.

Answer 1

Check this small working example which are looking for..

Track.java

public class Track {
    String title;
    String singer;
    //getters and setters
    @Override
    public String toString() {
        return "Track [title=" + title + ", singer=" + singer + "]";
    }
}

JSONService.java

@Path("/json/check")
public class JSONService {
    @POST
    @Path("/postManyAsString")
    @Consumes(MediaType.APPLICATION_JSON)
    public String createManyTrackInJSON(String jsonStr) throws Exception {
        JSONObject inputObject = new JSONObject(jsonStr);
        if(inputObject.get("tracks") instanceof JSONObject)
        {
            JSONObject jsonObject = (JSONObject) inputObject.get("tracks");
            System.out.println(jsonObject.get("title"));
            System.out.println(jsonObject.get("singer"));
        }
        else if(inputObject.get("tracks") instanceof JSONArray)
        {
            JSONArray jsonArray = (JSONArray) inputObject.get("tracks");
            for(int i=0; i<jsonArray.length(); i++)
            {
                JSONObject jsonObject = jsonArray.getJSONObject(i);
                System.out.println(jsonObject.get("title"));
                System.out.println(jsonObject.get("singer"));
            }
        }
        else
        {
            System.out.println(inputObject.get("tracks"));
        }
        return "Okay";
    }
}

URL: http://localhost:8080/RESTfulExample/rest/json/check/postMany input data:

[{
    "title" : "hai1",
    "singer" : "sree1"
},
{
    "title" : "hai2",
    "singer" : "sree2"
},
{
    "title" : "hai3",
    "singer" : "sree3"
}]

Answer 2

Try the JSON by passing in the below format.

{
  "data" : [
    {"firstName":"riya","lastName":"soni"}, 
    {"firstName":"shreya","lastName":"patel"}
 ]
}

Parse the JSON and get the data variable first and use it to get each object in the array.