相关疑难解决方法(0)

我正在开发一个企业项目,该项目具有EJB模块和在GlassFish v3.1,Weld v1.1和Jersey上运行的Web项目.在EJB中,我定义了一个实体类Manufacturer并生成了一个会话Facade ManufacturerFacade.

在Web项目中,我希望Manufacturer通过REST 公开实例.为此,我创建了以下资源:

这ManufacturersResource是一个容器资源,它返回存储在数据库中的所有制造商的列表.它通过注入ManufacturerFacade和调用findAll()方法来实现.缩写代码:

@RequestScoped
@Path("/manufacturer")
public class ManufacturersResource {

    @Inject
    private ManufacturerFacade manufacturerFacade;

    @GET
    @Produces("application/xml")
    public List<Manufacturer> getManufacturers() {
        return manufacturerFacade.findAll();
    }
}

该资源还有一个子资源:

@Path("{id}")
public ManufacturerResource getManufacturer(@PathParam("id") String id) {
    return ManufacturerResource.getInstance(id, manufacturerFacade);
}

该ManufacturerFacade如下外观:

public class ManufacturerResource {

    @Inject
    private ManufacturerFacade manufacturerFacade;

    private long id;

    private ManufacturerResource(String id) {
        this.id = Long.parseLong(id);
    }

    public static ManufacturerResource getInstance(String id,) {
        return new …