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書名： Jakarta EE Cookbook
作者名： Elder Moraes
本章字數： 153字
更新時間： 2021-06-24 16:12:41

How to do it...

You need to perform the following steps to try this recipe:

Start by creating a root for your JAX-RS endpoints:

@ApplicationPath("webresources")
public class AppConfig extends Application{
}

Create a User class (this will be your Model):

public class User {

    private String name;
    private String email;

    public User(String name, String email) {
        this.name = name;
        this.email = email;
    }

    //DON'T FORGET THE GETTERS AND SETTERS
    //THIS RECIPE WON'T WORK WITHOUT THEM
}

Now, create a session bean, which will be injected later in your Controller:

@Stateless
public class UserBean {
    
    public User getUser(){
        return new User("Elder", "elder@eldermoraes.com");
    }
}

Then, create the Controller:

@Controller
@Path("userController")
public class UserController {
    
    @Inject
    Models models;
    
    @Inject
    UserBean userBean;
    
    @GET
    public String user(){
        models.put("user", userBean.getUser());
        return "/user.jsp";
    }
}

And finally, create the web page (the View):

<head>
    <meta http-equiv="Content-Type" content="text/html; 
    charset=UTF-8">
    <title>User MVC</title>
</head>
<body>
    <h1>${user.name}/${user.email}</h1>
</body>

Run it on a Jakarta EE 8 server and access this URL:

http://localhost:8080/ch01-mvc/webresources/userController

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