I’m creating a REST API that will accept JSON requests.
I’m testing it out using CURL:
curl -i -POST -H 'Accept: application/json' -d '{"id":1,"pan":11111}' http://localhost:8080/PurchaseAPIServer/api/purchase
But getting the following error:
HTTP/1.1 415 Unsupported Media Type
Server: Apache-Coyote/1.1
Content-Type: text/html;charset=utf-8
Content-Length: 1051
Date: Wed, 25 Apr 2012 21:36:14 GMT
The server refused this request because the request entity is in a format not supported by the requested resource for the requested method ().
When debugging it never even gets into my create action in the controller.
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
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.ResponseBody;
import org.springframework.web.bind.annotation.ResponseStatus;
import com.app.model.Purchase;
import com.app.service.IPurchaseService;
@Controller
public class PurchaseController {
@Autowired
private IPurchaseService purchaseService;
@RequestMapping(value = "purchase", method = RequestMethod.GET)
@ResponseBody
public final List<Purchase> getAll() {
return purchaseService.getAll();
}
@RequestMapping(value = "purchase", method = RequestMethod.POST)
@ResponseStatus( HttpStatus.CREATED )
public void create(@RequestBody final Purchase entity) {
purchaseService.addPurchase(entity);
}
}
UPDATE
I added Jackson config to AppConfig.java:
@Configuration
@ComponentScan(basePackages = "com.app")
public class AppConfig {
@Bean
public AnnotationMethodHandlerAdapter annotationMethodHandlerAdapter()
{
final AnnotationMethodHandlerAdapter annotationMethodHandlerAdapter = new AnnotationMethodHandlerAdapter();
final MappingJacksonHttpMessageConverter mappingJacksonHttpMessageConverter = new MappingJacksonHttpMessageConverter();
HttpMessageConverter<?>[] httpMessageConverter = { mappingJacksonHttpMessageConverter };
String[] supportedHttpMethods = { "POST", "GET", "HEAD" };
annotationMethodHandlerAdapter.setMessageConverters(httpMessageConverter);
annotationMethodHandlerAdapter.setSupportedMethods(supportedHttpMethods);
return annotationMethodHandlerAdapter;
}
}
My GETs are working correctly now:
curl -i -H "Content-Type:application/json" -H "Accept:application/json" http://localhost:8080/PurchaseAPIServer/api/purchase
HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
Content-Type: application/json
Transfer-Encoding: chunked
Date: Thu, 26 Apr 2012 21:19:55 GMT
[{"id":1,"pan":111}]
But I get the following when attempting a POST:
curl -i -X POST -H "Content-Type:application/json" -H "Accept:application/json" http://localhost:8080/PurchaseAPIServer/api/purchaseMe -d "{"id":2,"pan":122}"
HTTP/1.1 400 Bad Request
Server: Apache-Coyote/1.1
Content-Type: text/html;charset=utf-8
Content-Length: 971
Date: Thu, 26 Apr 2012 21:29:56 GMT
Connection: close
The request sent by the client was syntactically incorrect ().
My Model:
@Entity
@XmlRootElement
public class Purchase implements Serializable {
/**
*
*/
private static final long serialVersionUID = 6603477834338392140L;
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
private Long pan;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public Long getPan() {
return pan;
}
public void setPan(Long pan) {
this.pan = pan;
}
}
Any ideas where I’m going wrong?
Thanks
As sdouglass suggested, Spring MVC automatically detects Jackson and sets up a MappingJacksonHttpMessageConverter to handle conversion to/from JSON. But I did need explicity configure the converter to get it to work as he also pointed out.
I added the following and my CURL GET requests were working..Hooray.
AppConfig.java
But the following CURL POST was still not working (Never hitting the controller action and giving no console debug info.
So I added Logback to get some detailed debugging started.
Adding TRACE level debugging to org.springframework.web.servlet.mvc gave me the answer to the problem.
I changed my CURL POSTs to the following an it all worked:
Hopefully someone finds this useful.