java - 玩框架Form.form找不到symbol

Question

我正在阅读 Play Framework 教程。我收到此错误:

error: cannot find symbol

In /Users/hseritt/devel/todolist/app/controllers/Application.java at line 12.

import views.html.*;

public class Application extends Controller {

static Form<Task> taskForm = Form.form(Task.class); // ERROR IS HIGHLIGHTED AS Form.form 

public static Result index() {
    return redirect(routes.Application.tasks());
}

我的 Application.java 的完整代码:

package controllers;

import play.*;
import play.data.*;
import play.mvc.*;

import models.*;
import views.html.*;

public class Application extends Controller {

static Form<Task> taskForm = Form.form(Task.class);

public static Result index() {
        return redirect(routes.Application.tasks());
}

public static Result tasks() {
    return ok(
        views.html.index.render(Task.all(), taskForm)
    );
}

public static Result newTask() {
     return TODO;
}

public static Result deleteTask(Long id) {
    return TODO;
}
}

我想知道我是否遗漏了教程中的某些内容或放错了地方。

谢谢!

Answer 1

我认为您应该导入以下内容:

import static play.data.Form.*;