> JAX-RS(参考实施泽西岛)
> JAXB(参考实施地铁)@H_502_2@

两者都包含在Glassfish Java EE 5和6参考实现中.@H_502_2@

简而言之,JAX-RS允许您通过添加@GET,@ POST,@ PUT或@DELETE注释之一将普通方法声明为Web服务. JAX-RS还具有自动解析路径和URL查询参数的注释,并且在大多数情况下它负责构造适当的响应对象.@H_502_2@

JAXB通过添加@XmlRootElement,@ XMLElement,@ XMLID等自动将纯对象(PO​​JO)与XML进行转换.当与JAX-RS结合使用时,编组和解组将以透明方式完成.@H_502_2@

例如：@H_502_2@

@H_502_2@

// POJO with JAXB annotations

@XmlRootElement(name = "sensor")
public class MyObject {
    @XmlID
    @XmlElement
    private String id;

    @XmlAttribute
    private String name;

    @XmlElement(name = "sensor-value")
    private Integer value;

    @XmlTransient // don't translate to XML
    private Double computedValue;

    // ...getters and setters
}


// POJO with REST interface

@Path("/mywebservice")
public class MyWebService {
    @EJB
    MySensorController controller;

    @GET
    @Produces("application/xml")
    public MyObject getCurrentSensorValue(@QueryParam("ID") String id) {
        // automatic unmarshalling from MyObject to XML
        return controller.getSensorValue(id);
    }
}

生成的XML看起来像这样：@H_502_2@

@H_502_2@