如何在Java和Play Framework中使用HTTP方法

Question

I really dont understand much of How Play Framework interact with Java (i use eclipse as IDE)
so please bear with me if my explanation is a bit incomprehensible

what i am trying to do is a 1-page webpage (localhost:9000) that could look like this:

http://i.stack.imgur.com/JtRFF.png (i only have 1 rep so i think can't put image; just a link)

THINGS I NEED TO KNOW:
1) How Does HTTP Methods interact with Playframework
2) How can I Delete, Edit entries

currently What i only know is how to populate students

    public static Result addStudents(){

    Student student = Form.form(Student.class).bindFromRequest().get();
    student.save();
    return redirect(routes.Application.index());
    }

public static Result getStudents(){

List<Student> students = new Model.Finder(String.class, Student.class).all();
return ok(toJson(students));
}

@Entity
public class Student extends Model{

@Id
public String Id;
public String name;
public String course;

}

(I use Java not scala but i really don't know about the difference so i retained the intex.scala.html)

@main("Welcome to Play") {
<form action="@routes.Application.addStudents()" method="post">
<input name="name">
<input course="course">
<input type="submit">
</form>
}

 POST    /student                   controllers.Application.addStudents()
 GET     /student                   controllers.Application.getStudents()

Answer 1

This completely depends on your needs. You will probably need to learn some ajax, and then learn how to work with requests in the play framework. You can learn ajax basics here . Here you can learn to parse the data you can send with ajax.

For example:

Javascript

var req = new XMLHttpRequest();
var data = "{"Hi"};
req.open("GET", "http://localhost:9000/service, true);
req.send(data);

Java

@BodyParser.Of(BodyParser.Json.class)
public static Result index() {
    RequestBody body = request().body();
    return ok(body.asJson()).as("text/json");
}

Also, you will need to import play.mvc.Http . I am not sure about the javascript, my ajax is a little rusty.

This will simply echo the response back , but it shows the basics.