Spring REST JSON response

Spring REST JSON response

Spring’s @ResponseBody annotation and returning the object that we want to send to the client.

The @ResponseBody annotation tells Spring that we will be returning data in the response body rather than rendering a JSP.

When the @ResponseBody annotation is used, Spring will return the data in a format that is acceptable to the client.

JSON response:

If the client request has a header to accept JSON and Jackson-Mapper is present in the classpath, then Spring will try to serialize the return value to JSON.

XML response:

If the request header indicates XML as acceptable (accept= application/xml) and Java Architecture for XML Binding (JAXB) is in the classpath and the return type is annotated with JAXB annotation, Spring will try to marshall the return value to XML.

<dependency>

    <groupId>org.codehaus.jackson</groupId>

    <artifactId>jackson-mapper-asl</artifactId>

    <version>1.9.12</version>

</dependency>

import org.apache.log4j.Logger;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.http.MediaType;

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.PathVariable;

import org.springframework.web.bind.annotation.RequestBody;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestMethod;

import org.springframework.web.bind.annotation.RequestParam;

import org.springframework.web.bind.annotation.ResponseBody;

import org.springframework.web.context.request.WebRequest;

import com.abusecore.controller.RestController;

import com.abusecore.model.Count;

import com.abusecore.services.IDataServices;

@Controller

@RequestMapping("/AbuseCore-1")

public class RestController {

       @Autowired

       IDataServices dataServices;

      

      

       /** Logger class to display logs. */

       static final Logger logger = Logger.getLogger(RestController.class);

      

       @RequestMapping(value="/count-tickets.json",method=RequestMethod.GET)

       public @ResponseBody Count getTicketsCount() {

              Count count = dataServices.getTicketsCount();

              logger.info("total tickets :" + count);

              return count;

       }

}