Restlet开发指南.doc

Restlet开发指南1. Java对象Java对象是实际操作对象的封装，目前可以从http提交的xml格式和Json格式自动转换为Java类对象。1.1. XML转换XmlRootElement(name=”user”)public class User private String name; private String sex; private int id; public void setName(String name) = name; public void setId(int id)this.id = id; public void setSex(String sex)this.sex = sex; public String getName()return ; public String getSex()return this.sex; public int getId() return this.id; 如果http客户端提交的数据格式是xml， Json male 10001Restlet将会自动转化成一个User对象。2. Resource对象Path(“/users”)class UsersResource GET Produces(“application/xml”,”text/xml”) public UserList getUsers() . /UserList也必须是个可转换xml的对象 GET Path(“/id:d+”) Produces(“application/xml”,”text/xml”) public User getUser(PathParam(“id”) int id) . POST Consumes(“application/xml”,”text/xml”) public int addUser(User user) . POST Consumes(“application/json”) public int addUser(Representation rep) JsonRepresentation jrep = new JsonRepresentation(rep); JSONObject jobj = jrep.getJSONObject(); User user = new User(); user.setName(jobj.getString(“name”); user.setSex(jobj.getString(“sex”); user.setId(jobj.getInteger(“id”); return user.getId(); PUT Path(“/id:d+”) Consumes(“application/xml”, “text/xml”) public int updateUser(PathParam(“id”) int id，User usr) . DELETE Path(“/id:d+”) public int deleteUser(PathParam(“id”) int id) . 3. Applicationpublic class TestApplication extends javax.ws.rs.core.Application public TestApplication() super(); public SetClass getClasses() final SetClass classes = new HashSetClass(); classes.add(UsersResource.class); return classes; public Set getSingletons() /final Set singleton = new HashSet(); / singleton.add(new UserResource(); / return singleton; return null; 4. 内部存储在系统运行过程中，返回存储的单一实例public class UserManager private UserManager singleton = new UserManager(); public static UserManager get() return singleton; private Map userDB= new HashMap(); private IntCounter id = new IntCounter(100); public int addUser(User user) this.userDB.put(id.incrementInt(), user); return id.get(); public int updateUser(int id, User user)this.userDB.replace(id, user);return id; public int deleteUser(int id)this.userDB.remove(id);return id; public User getUser(int id)return this.userDB.get(id); 5. 启动RESTpublic class RestMain public static void main(String args) Component com = new Component();Server server = com.getServers(); server.add(Protocol.HTTP,8184);JaxRsApplication app = new JaxRsApplication(com.getContext().createChildContext();app.add(new TestApplication();com.getDefaultHost().attach(app);com.start();System.out.println(Server started on port + server.getPort(); System.out.