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?
Here's one of my methods:
@GET
@Path("/friends")
@Produces("application/json")
public String getFriends() {
return "{'friends': ['Michael', 'Tom', 'Daniel', 'John', 'Nick']}";
}
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?
Please help me as a beginner to deal with these issues. Thanks in advance!
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;
}
}
and then your method would look like this:
@GET @Produces("application/json")
public MyJaxbBean getMyBean() {
return new MyJaxbBean("Agamemnon", 32);
}
There is a chapter in the latest documentation that deals with this:
https://jersey.java.net/documentation/latest/user-guide.html#json