如何在Jersey REST webservice中返回Array？ [英] How to return Array in Jersey REST webservice?

问题描述

我是REST webservice的新手，我尝试使用Jersey实现并编写了一个简单的Web服务代码，将List返回给调用客户端：

I am new to REST webservice, I tried using Jersey implementation and wrote a simple webservice code to return List to calling client:

@GET
@Produces(MediaType.TEXT_XML)
public GenericEntity<List<String>> stringlist() {
    List<String> list = Arrays.asList("test", "as");
    return new GenericEntity<List<String>>(list) {
    };
}

我不知道如何在我的客户端获取列表的值。我刚试过在我的客户端使用下面的代码，但是我收到了错误。

I am not sure how to get the value of the list in my client. I just tried using the below code in my client but I am getting error.

service.path("rest")
       .path("getVal")
       .accept(MediaType.TEXT_XML)
       .get(GenericEntity.class

有人可以通过简单的Web服务代码帮助我将Array传递给客户端吗？

Can someone help me with a simple webservice code which passes the Array to client?

推荐答案

您应该只能返回一些@XmlRootElement注释对象的List并访问它们：

You should be able to return just List of some @XmlRootElement annotated objects and access them:

service.path("rest").path("getVal").accept(MediaType.TEXT_XML).get(new GenericEntity<List<MyObj>>{});

由于某些原因，这对于普通字符串来说更复杂，你需要用JAXBElement封装它们

for some reason this is more complicated with plain strings, you need to encapsulate them with JAXBElement

@GET
@Produces(MediaType.TEXT_XML)
public List<JAXBElement<String>> stringlist() {
     Arrays.asList(new JAXBElement[] {
        new JAXBElement(QName.valueOf("element1"), String.class, "ahoj"),
        new JAXBElement(QName.valueOf("element2"), String.class, "nazdar")
    };);
}

并像以前的情况一样访问它，但你需要询问for

And access it similarly as in previous case, but you would need to "ask" for

new GenericEntity<List<JAXBElement<String>>>{}

这篇关于如何在Jersey REST webservice中返回Array？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！