Getting error when submitting form using SpringMVC and REST_问答_开发者

Created an online form in JSP using SpringMVC tag libraries. The controller for my form is a RESTful web service.

The RESTful web service has two calls:

(1) http://localhost:8080/myapp/applications/new

This brings up the online form in the browser (this works).

(2) http://localhost:8080/myapp/applications/create

This saves the form data to a database (handles submit). This is where it breaks.

Followed the conventions from the sample demo petclinic app which comes with the Spring Framework.

Online form:

<%@ page contentType="text/html;charset=UTF-8" language="java"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%@ taglib prefix="spring" uri="http://www.springframework.org/tags"%>
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>

<html>
     <body>
       <form:form modelAttribute="application" method="POST" action="create">
      <table>
        <tr>
          <td>Name:</td>
          <td><form:input path="name" size="30" maxlength="80"/></td>
        </tr>
        <tr>
          <td>Description:</td>
          <td><form:input path="description" size="30" maxlength="80"/></td>
        </tr>
        <tr>
          <td>Image URL:</td>
          <td><form:input path="imgUrl" size="30" maxlength="80"/></td>
        </tr>
      </table>
      <input type="submit" value="Save" />
        </form:form>
    </body>
</html>

The RESTful web se开发者_如何学Gorvice which serves as form controller:

@Controller
@Path(ApplicationsResource.APPLICATION_URL)
public class ApplicationsResource
{
    private final Logger log = 
            LoggerFactory.getLogger(ApplicationsResource.class);

    public static final String APPLICATION_URL = "/applications";

    @Autowired
    private ApplicationManager applicationManager;

    @Autowired
    private ProfileManager profileManager;

    @POST
    @Path("create")
    @Produces(MediaType.TEXT_HTML)
    public Model getNewApplication(@Context HttpServletRequest request,
                                   @RequestAttribute Model model)
    {

        Application app = new Application();
        model.addAttribute("application", app);
        try
        {
          if ("POST".equalsIgnoreCase(request.getMethod()))
          {
              if (app != null)
              {
                  applicationManager.save(app);
                  log.info("Added application: " + app.getName());
              }
              else
              {
                  log.info("Application not added");
              }
           }
         } 
         catch (Exception e)
         {
          log.info("Exception: ", e);
          throw new
                  WebApplicationException(Response.status(
                   RestError.SERVER_ERROR_HTTP_RESP).
                   type("application/json;charset=utf-8").
                   entity(new ErrorOutput(RestError.SERVER_ERROR_CODE, RestError.SERVER_ERROR_MSG, e.toString())).build());
          }
      return model;
    }

   @InitBinder
   public void setAllowedFields(WebDataBinder dataBinder)
   {
       dataBinder.setDisallowedFields(new String[] {"id"});
   }

   @GET
   @Path("new")
   @Produces( { MediaType.TEXT_HTML })
   public ModelAndView getNewApplicationForm()
   {
       log.info("ApplicationsResource - Inside getNewApplicationForm");
       ModelAndView mv = new ModelAndView("/applications/applications_new");
       mv.addObject("application", new Application());
       return mv;
   }
}

Exception thrown when I click on submit:

Failed executing POST /applications/create org.jboss.resteasy.spi.BadRequestException:

Could not find message body reader for type:

interface org.springframework.ui.Model of content type: application/x-www-form-urlencoded at

org.jboss.resteasy.core.MessageBodyParameterInjector$1 createReaderNotFound(MessageBodyParameterInjector.java:73)

Does anyone know why I am getting this exception?

Would really appreciate it if someone could help me with this issue...

Happy programming and thank you for taking the time to read this.

It was a RESTEasy problem... The fix was putting the @Form Application App inside the parameter list and prepending the domain model object's setters with @FormParam("name").

See: Integrating RESTEasy with SpringMVC

You haven't told your controller what mime types it accepts and how to map them, it needs a Reader associated with that mime type to map it and send it into your method.