Question

我开发了一个简单的RESTful Web服务。

根资源类：

@Path("/order")
@RequestScoped
public class CustOrderContainerResource {

  //<editor-fold defaultstate="collapsed" desc="Instance Variable">
  @Context
  private UriInfo myUriInfo;

  @Context
  private ResourceContext myResourceContext;

  @Context
  private SecurityContext mySecurityContext;

  @Inject
  private CustOrderDAO myCustOrderDAO;

  public CustOrderContainerResource() {
  }


  @GET
  @Produces({MediaType.APPLICATION_XML, MediaType.APPLICATION_ATOM_XML})
  public List<Custorder> ReadCustomerOrder(@QueryParam("min")int min, 
      @QueryParam("max")int max, @Context Request myRequest, 
      @Context HttpHeaders myHeader) {

    int totalOrder = 0;
    List<Custorder> resultList = null;

    totalOrder = myCustOrderDAO.count();
    if(min == 0 && max == 0) {
      throw new QueryParamException("Order ID is empty");
    }
    else if(max > totalOrder) {
      throw new QueryParamException("Order ID Range is invalid");
    }
    resultList = myCustOrderDAO.findRange(min, max, "findOrderIDRange");

    return resultList;
  }

  @GET
  @Produces(MediaType.APPLICATION_JSON)
  public List<Custorder> ReadCustomerOrder() {

    // Check conditional get here
    return myCustOrderDAO.findAll(); 
  }

  @POST
  @Consumes({MediaType.APPLICATION_XML, MediaType.APPLICATION_FORM_URLENCODED})
  public Response createOrder(Custorder myCustOrder) {

    String orderID = null;

    myCustOrder.setStatus("pending");
    myCustOrder.setOrderdate(new Date());
    myCustOrder.setTotal("");

    // Persist
    myCustOrderDAO.create(myCustOrder);

    // Get Order ID

    // Embedded created URL for new customer order in response
    return Response.created(myUriInfo.getAbsolutePath().resolve(myCustOrder.getOrderid() + "/")).build();
  }

  @Path("{orderID}")
//  @Produces(MediaType.TEXT_HTML)
  public CustOrderResource ReadSingleCustomerOrder(@PathParam("orderID") String orderID) {

    int userOrderID = Integer.parseInt(orderID);
    int myOrderID = myCustOrderDAO.count();

    CustOrderResource myCustorder = null;

    if(userOrderID > myOrderID 
            || myCustOrderDAO.find(orderID) == null) {
      throw new OrderNotFoundException("Order ID Not Found");
    }

    if(!mySecurityContext.isUserInRole("admin")) {  
      // Propogates to specific resource class
      myCustorder = myResourceContext.getResource(CustOrderResource.class);
      myCustorder.setOrderID(orderID);
    }

    return myCustorder;
    //    return CustOrderResource.getInstance(myCustOrderDAO, orderID);
  }
}

子资源定位器类：

@RequestScoped
public class CustOrderResource {

  //<editor-fold defaultstate="collapsed" desc="Instance Variable">
  @Inject
  private CustOrderDAO myCustOrderDAO;

  private String orderID;

  private static final Logger myLogger = Logger.getLogger(CustOrderResource.class.getName()); 

  //</editor-fold>

  // ========================================================
  public CustOrderResource() {
  }

  private CustOrderResource(String orderID) {
    this.orderID = orderID;
  }


  public static Custorder getInstance(CustOrderDAO myCustOrderDAO, String orderID) {
    return myCustOrderDAO.find(orderID);
  }

  @GET
  @Produces({MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON, MediaType.APPLICATION_ATOM_XML})
  public Custorder getCustomerOrder() {
    return myCustOrderDAO.find(orderID);
  }

  @POST
  @Consumes(MediaType.APPLICATION_XML)
  public String updateCustomerOrder() {

    return "so";

    /*try {
      myCustOrderDAO.update(myCustOrder);
    }
    catch(Exception e) {

      myLogger.log(Level.ALL, e.toString());

      throw new WebApplicationException(
              Response.status(Status.INTERNAL_SERVER_ERROR)
              .entity("Cust Order Update Failed").build());
    }*/
  }

  @DELETE
  // 415 Unsupported media type
  public String deleteCustomerOrder() {

    return "Deleted";
    //    myCustOrderDAO.delete(myCustOrder);
  }

  public String getOrderID() {
    return orderID;
  }

  public void setOrderID(String orderID) {
    this.orderID = orderID;
  }
}

我的问题是

AFAIK，资源上下文将传播到特定的资源类当我们根据HTTP方法将它指定为参数时 POST或DELETE。如何从子资源定位器传递参数方法进入子资源类方法？

我尝试使用带有XML数据的post方法更新客户订单，但遗憾的是JAX-RS运行时返回415不支持的媒体类型。

我正在使用http://code.google.com/p/rest-client/中的REST客户端来测试我的应用程序，方法是将XML文件粘贴到正文选项卡内容中。这有什么问题？

当我返回列表时，JAXB是否自动转换为XML 对象？我已经测试过，它返回xml格式但只是想要确认。返回响应对象是否更灵活？

我想知道如何使用对象列表和带有列表对象（Apache Abdera）的URI或Atom XML列表构建一个响应对象。

如何在我的数据库中找到一个新持久化对象的id createCustomerOrder方法？

感谢。

请帮忙。

Answer 1

使用QueryParam注释解决将对象传递到子资源定位器类的问题。新持久化的对象是使用EntityManager util查找的。

RESTful Web服务 - 资源上下文和响应问题

1 个答案: