How to convert json String to java object

Question

From jsp through ajax cal I'm passing json string to server and I am converting to json object. How can I convert the jsonobject to a model class object in java? In server I'm doing this: ``` HttpServletRequest request = ServletActionContext.getRequest(); String jsonData = request.getParameter("JsonData"); JSONObject jsonDataObject = (JSONObject) JSONSerializer.toJSON( jsonData ); ``` My model classes looks like this: ``` public class Vehicles { private List vehicle; public List getVehicle() { return vehicle; } public void setVehicle(List vehicle) { this.vehicle= vehicle; } } ``` And ``` public class Vehicle{ private Integer vId; private String VName; private List department; //getters and setters; } ``` and ``` public class Department{ private Integer depId; private String departmentName; private List item; //getters and setters } ``` and ``` public class Item{ private Integer itemId; private String itemName; //getters and setters } ``` an…

Accepted Answer

use this..

```
  import org.codehaus.jackson.map.ObjectMapper;
  import org.json.JSONException;
  import org.json.JSONObject;

HttpServletRequest request = ServletActionContext.getRequest();
Vehicles vehicles;
String jsonData = request.getParameter("JsonData");
jsonData = jsonData.substring(13, jsonData.length()-2);
ObjectMapper mapper = new ObjectMapper();
try{
    vehicles= mapper.readValue(jsonData, Vehicles.class);
}
catch (Exception e) {
    e.printStackTrace();
}
```

How to convert json String to java object

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