java - Parse a JSON response as an object -

good evening,
newbie in web services , want write simple client gets responses rest calls.
downloaded , added jersey-bundle-1.17.1.jar build path , found working piece of code makes rest call url , returns response string.

import javax.ws.rs.core.mediatype;  import com.sun.jersey.api.client.client; import com.sun.jersey.api.client.clientresponse; import com.sun.jersey.api.client.webresource;  public class testjerseyclient {     public static void main(string[] args) {         try {             client client = client.create();             webresource webresource = client                     .resource("http://path/to/service");              clientresponse response = webresource                     .accept(mediatype.application_json)                     .get(clientresponse.class);              if (response.getstatus() != 200)                 throw new runtimeexception("failed : http error code : " + response.getstatus());              string output = response.getentity(string.class);              system.out.println("output server .... \n");             system.out.println(output);         } catch (exception e) {             e.printstacktrace();         }     } } 

but don't want string manipulations parts of response im interested in.

i prefer more structured approach, getting object instead of string
(a json object, map<k,v> object, etc...)

---

try#1 - map<k,v>

sep 15, 2013 2:46:13 com.sun.jersey.api.client.clientresponse getentity severe: message body reader java class java.util.map, , java type java.util.map<java.lang.string, java.lang.object>, , mime media type application/json; charset=utf-8 not found sep 15, 2013 2:46:13 com.sun.jersey.api.client.clientresponse getentity severe: registered message body readers compatible mime media type are: application/json; charset=utf-8 ->   com.sun.jersey.json.impl.provider.entity.jsonjaxbelementprovider$app   com.sun.jersey.json.impl.provider.entity.jsonrootelementprovider$app   com.sun.jersey.json.impl.provider.entity.jsonlistelementprovider$app */* ->   com.sun.jersey.core.impl.provider.entity.formprovider   com.sun.jersey.core.impl.provider.entity.stringprovider   com.sun.jersey.core.impl.provider.entity.bytearrayprovider   com.sun.jersey.core.impl.provider.entity.fileprovider   com.sun.jersey.core.impl.provider.entity.inputstreamprovider   com.sun.jersey.core.impl.provider.entity.datasourceprovider   com.sun.jersey.core.impl.provider.entity.xmljaxbelementprovider$general   com.sun.jersey.core.impl.provider.entity.readerprovider   com.sun.jersey.core.impl.provider.entity.documentprovider   com.sun.jersey.core.impl.provider.entity.sourceprovider$streamsourcereader   com.sun.jersey.core.impl.provider.entity.sourceprovider$saxsourcereader   com.sun.jersey.core.impl.provider.entity.sourceprovider$domsourcereader   com.sun.jersey.json.impl.provider.entity.jsonjaxbelementprovider$general   com.sun.jersey.core.impl.provider.entity.xmlrootelementprovider$general   com.sun.jersey.core.impl.provider.entity.xmllistelementprovider$general   com.sun.jersey.core.impl.provider.entity.xmlrootobjectprovider$general   com.sun.jersey.core.impl.provider.entity.entityholderreader   com.sun.jersey.json.impl.provider.entity.jsonrootelementprovider$general   com.sun.jersey.json.impl.provider.entity.jsonlistelementprovider$general  com.sun.jersey.api.client.clienthandlerexception: message body reader java class java.util.map, , java type java.util.map<java.lang.string, java.lang.object>, , mime media type application/json; charset=utf-8 not found     @ com.sun.jersey.api.client.clientresponse.getentity(clientresponse.java:561)     @ com.sun.jersey.api.client.clientresponse.getentity(clientresponse.java:535)     @ com.sun.jersey.api.client.webresource.handle(webresource.java:696)     @ com.sun.jersey.api.client.webresource.access$300(webresource.java:74)     @ com.sun.jersey.api.client.webresource$builder.get(webresource.java:512)     @ rest.testjerseyclientadvanced.main(testjerseyclientadvanced.java:36) 

you can use genson library.

// register genson in jersey client clientconfig cfg = new defaultclientconfig(gensonjsonconverter.class); client client = client.create(cfg); webresource webresource = client.resource("http://path/to/service");  // can map pojo, no need have string or map somepojo pojo = webresource                 .accept(mediatype.application_json)                 .get(somepojo.class);