Rest Api json example

import java.io.IOException;

import java.net.MalformedURLException;

import java.net.URL;

import com.fasterxml.jackson.core.JsonFactory;

import com.fasterxml.jackson.core.JsonParseException;

import com.fasterxml.jackson.core.JsonParser;

import com.fasterxml.jackson.databind.ObjectMapper;

public class MainClass {

public static void main(String[] args) {

JsonParser();

}

public static void JsonParser() {

String URL = "http://api.plos.org/search?q=title:%22Drosophila%22%20and%20body:%22RNA%22&fl=id&start=100&rows=100";

try {

ObjectMapper om = null;

JsonParser jp = null;

RootObject result = new RootObject();

jp = new JsonFactory().createParser(new URL(URL));

om = new ObjectMapper();

result = om.readValue(jp,RootObject.class);

Response response = result.getResponse();

System.out.println(response.getNumFound());

System.out.println(response.getStart());

for (Doc value : response.getDocs()) {

System.out.println( value.getId());

}

} catch (JsonParseException e) {

e.printStackTrace();

} catch (MalformedURLException e) {

e.printStackTrace();

} catch (IOException e) {

System.out.println(e.getMessage());

e.printStackTrace();

}

}

}

public class Doc
{

@jsonproperty  private String id;

  public String getId() { return this.id; }

  public void setId(String id) { this.id = id; }
}

public class Response
{
  @jsonproperty("numFound") private int numFound;

  public int getNumFound() { return this.numFound; }

  public void setNumFound(int numFound) { this.numFound = numFound; }

 @jsonproperty("start") private int start;

  public int getStart() { return this.start; }

  public void setStart(int start) { this.start = start; }

  @jsonproperty("docs") private ArrayList<Doc> docs;

  public ArrayList<Doc> getDocs() { return this.docs; }

  public void setDocs(ArrayList<Doc> docs) { this.docs = docs; }
}

public class RootObject
{
  @jsonproperty("response") private Response response;

  public Response getResponse() { return this.response; }

  public void setResponse(Response response) { this.response = response; }
}