How correctly produce JSON by RESTful web service

Question

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

User · Answer

Use this annotation   RequestMapping value     url   method   RequestMethod GET  produces    MediaType APPLICATION JSON

User · Answer

GET  Path   friends    Produces MediaType APPLICATION JSON  public String getFriends             here you can return any bean also it will automatically convert into json      return    friends     Michael    Tom    Daniel    John    Nick

User · Answer

You could use a package like org json http   www json org java   Because you will need to use JSONObjects more often   There you can easily create JSONObjects and put some values in it    JSONObject json   new JSONObject     JSONArray array new JSONArray        array put  1        array put  2        json put  friends   array        System out println json toString 2            friends            1          2           edit This has the advantage that you can build your responses in different layers and return them as an object

User · Answer

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

User · Answer

POST  Path   Employee    Consumes  application json    Produces  application json   public JSONObject postEmployee JSONObject jsonObject throws Exception      return jsonObject

[java] How correctly produce JSON by RESTful web service?

Examples related to java

Examples related to json

Examples related to web-services

Examples related to rest

Examples related to jersey