如何通过RESTful Web服务正确生成JSON？ [英] How correctly produce JSON by RESTful web service?

问题描述

我第一次写网络服务。我创建了一个基于 Jersey 的RESTful Web服务。我想生成JSON 。如何生成正确的JSON类型的Web服务需要做什么？

I am writing a web service the first time. I created a RESTful web service based on Jersey. And I want to produce JSON. What do I need to do to generate the correct JSON type of my web service?

这是我的方法之一：

@GET
@Path("/friends")
@Produces("application/json")
public String getFriends() {
    return "{'friends': ['Michael', 'Tom', 'Daniel', 'John', 'Nick']}";
}

我只需指出注释 @就足够了为我的方法生成（application / json）？那么这个方法可能会返回任何类型的对象？还是只有String？我是否需要对这些对象进行额外处理或转换？

Is it sufficient that I simply point out annotation @Produces("application/json") for my method? Then this method may return any type of object? Or only String? Do I need additional processing or transformation of these objects?

请帮助我作为初学者来处理这些问题。在此先感谢！

Please help me as a beginner to deal with these issues. Thanks in advance!

推荐答案

您可以使用jaxb注释来注释您的bean。

You can annotate your bean with jaxb annotations.

  @XmlRootElement
  public class MyJaxbBean {
    public String name;
    public int age;

    public MyJaxbBean() {} // JAXB needs this

    public MyJaxbBean(String name, int age) {
      this.name = name;
      this.age = age;
    }
  }

然后您的方法如下所示：

and then your method would look like this:

   @GET @Produces("application/json")
   public MyJaxbBean getMyBean() {
      return new MyJaxbBean("Agamemnon", 32);
   }

最新文档中有一章涉及此问题：

There is a chapter in the latest documentation that deals with this:

https：// jersey .java.net / documentation / latest / user-guide.html #json

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