formFactory.form()不存在!PlayFramework

Question

我有一点问题,我想创建一个Web应用程序,我学习PlayFramework与java文档

此示例代码:

public Result hello() {
    DynamicForm requestData = formFactory.form().bindFromRequest();
    String firstname = requestData.get("firstname");
    String lastname = requestData.get("lastname");
    return ok("Hello " + firstname + " " + lastname);
}

''formFactory''不存在.

http://i.imgur.com/W941Bgz.png

为什么我没有这个领域？

当我想创建一个模型时,我没有模型类

http://i.imgur.com/9FW7wp1.png

如果你解决我的问题,非常感谢你!:)

Answer 1

从文档:

要包装一个类,你必须将一个play.data.FormFactory注入到Controller中

Play已经知道了FormFactory,所以只需为它添加一个构造函数参数:

public class FooController {

    private final FormFactory formFactory;

    @Inject
    public FooController(final FormFactory formFactory) {
        this.formFactory = formFactory;
    }

    public Result hello() {
        DynamicForm requestData = formFactory.form().bindFromRequest();
        String firstname = requestData.get("firstname");
        String lastname = requestData.get("lastname");
        return ok("Hello " + firstname + " " + lastname);
    }
}

我猜Model你提到的是EBean.您需要为项目启用EBean,然后您将在类路径上拥有必要的类.

在project/plugins.sbt:

addSbtPlugin("com.typesafe.sbt" % "sbt-play-ebean" % "3.0.0")

build.sbt:

lazy val myProject = (project in file(".")).enablePlugins(PlayJava, PlayEbean)

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