Jersey building restful style of Webserivices (ii)

I. GENERAL description

XML and JSON are the most commonly used data interchange formats. This example shows how to turn a Java object into an XML output.

Second, the process

1. In the example above, create a package "Com.waylau.rest.bean"

2. Create a Java class "User" under the package

[Java]View Plaincopyprint?

2. Package Com.waylau.rest.bean;
4. Import javax.xml.bind.annotation.XmlRootElement;
6. /*
8. * User Bean
10. * @author waylau.com
12. * 2014-3-17
14. */
16. @XmlRootElement
18. Public class User {
22. private String userId;
24. private String UserName;
26. private String age;
30. Public User () {};
34. Public User (string userId, String userName, String age) {
36. This.userid = userId;
38. this.username = userName;
40. this.age = age;
42. }
44. Public String getUserId () {
46. return userId;
48. }
50. public void Setuserid (String userId) {
52. This.userid = userId;
54. }
56. Public String GetUserName () {
58. return userName;
60. }
62. public void Setusername (String userName) {
64. this.username = userName;
66. }
68. Public String Getage () {
70. return age;
72. }
74. public void Setage (String age) {
76. this.age = age;
78. }
80. }

Note: This class adds an annotation "@XmlRootElement" that is the root node of the XML when it is converted to XML.

3. In "Com.waylau.rest.resources", add the Resource "Userresource" with the following code:

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2. Package com.waylau.rest.resources;
6. Import java.util.ArrayList;
8. Import Java.util.HashMap;
10. Import java.util.List;
12. Import Java.util.Map;
16. Import Javax.ws.rs.Path;
18. Import javax.ws.rs.Produces;
20. Import Javax.ws.rs.PathParam;
22. Import Javax.ws.rs.core.MediaType;
24. Import Javax.ws.rs.DELETE;
26. Import Javax.ws.rs.GET;
28. Import Javax.ws.rs.POST;
30. Import Javax.ws.rs.PUT;
34. Import Com.waylau.rest.bean.User;
38. @Path ("/users")
40. Public class Userresource {
42. private static map<string,user> UserMap = new hashmap<string,user> (); Store users
44. /** 
46. * Check All
48. * @return
50. */
52. @GET
54. @Produces (mediatype.application_xml)
56. Public list<user> getAllUsers () {
58. list<user> users = new arraylist<user> ();
60. User U1 = new User ("001","Waylau","26");
62. User U2 = new User ("002","King","23");
64. User U3 = new User ("003","Susan","21");
68. Usermap.put (U1.getuserid (), U1);
70. Usermap.put (U2.getuserid (), U2);
72. Usermap.put (U3.getuserid (), U3);
76. Users.addall (Usermap.values ());
78. return users;
80. }
84. @GET
86. @Path ("/getuserxml")
88. @Produces (mediatype.application_xml)
90. Public User Getuserxml () {
92. User user = new user ();
94. User.setage ("21");
96. User.setuserid ("004");
98. User.setusername ("Amand");
100. return user;
102. }
110. }

Where Mediatype.application_xml shows that the output is in XML form

Output a single object in the browser input http://localhost:8089/RestDemo/rest/users/getUserXml

A collection of Http://localhost:8089/RestDemo/rest/users output objects in the browser input

This article transferred from: http://blog.csdn.net/kkkloveyou/article/details/21415735

Jersey building restful style of Webserivices (ii)