After creating a Rest Service using Spring MVC4.1.X, I encountered an issue when attempting to return Json output to the browser. The error message displayed was:
The resource identified by this request is only capable of generating responses with characteristics not acceptable according to the request "accept" headers.
I have utilized @ResponseBody for automatic conversion of a Java pojo into JSON objects and have attempted various solutions from Stack Overflow without success.
my controller class
package com.spring.rest.ambulance;
import java.io.IOException;
import net.sf.json.JSONObject;
import org.codehaus.jackson.map.ObjectMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;
import com.spring.dao.AmbulanceDAO;
import com.spring.dao.AmbulanceDAOImpl;
import com.spring.model.Ambulance;
@RestController
@RequestMapping("/Ambulance")
public class AmbulanceRestController {
@Autowired
private AmbulanceDAO ambulanceDAO;
@RequestMapping(value = "/hello", method = RequestMethod.GET)
public @ResponseBody String getAllUsers(ModelMap model) {
String jsonData = "[{\"id\":\"3253123\",\"firstname\":\"Chris\",\"lastname\":\"Johnson\",\"address\":\"211, Geoffrey Drive\",\"city\":\"Newark\",\"phone\":\"999-888-6666\",\"email\":\"<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="f6959e849f859cb68f979e9999d895999b">[email protected]</a>\"},{\"id\":\"67643837\",\"firstname\":\"Bill\",\"lastname\":\"Derkson\",\"address\":\"201, Sleepy Hollow Drive\",\"city\":\"Newark\",\"phone\":\"999-777-2222\",\"email\":\"<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="c5a7aca9a9a185a2a8a4aca9eba6aaa8">[email protected]</a>\"}]";
return jsonData;
}
@RequestMapping(value = "/{id}")
public @ResponseBody Ambulance getAmbulanceProviders(ModelMap model,
@PathVariable("id") int Id) {
String jsonData = null ;
Ambulance ambulance = ambulanceDAO.getById(Id);
ObjectMapper objmapper = new ObjectMapper();
try {
jsonData = objmapper.writeValueAsString(ambulance);
} catch (IOException e) {
e.printStackTrace();
}
return ambulance;
}
Entity being returned
package com.spring.model;
import org.codehaus.jackson.map.ObjectMapper;
public class Ambulance {
private int ID;
private String vehicleNumber;
private String ambulanceType;
private String ambulanceProviderName;
//getters and setters omitted
}
DAO Ambulance getById
public Ambulance getById(int id) {
Ambulance ambulance = new Ambulance();
System.out.println(jdbcTemplate.getDataSource());
String sql = "SELECT * FROM AMBULANCE WHERE AMBULANCEID = ?";
ambulance = (Ambulance)jdbcTemplate.queryForObject(sql,new Object[] { id }, new AmbulanceRowMapper());
return ambulance;
}
pom.xml
<!-- POM file content -->