如何从 Scala Play 访问帖子数据？
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How do I access post data from scala play?
提问by user1435853
I have a route that is type "POST". I am sending post data to the page. How do I access that post data. For example, in PHP you use $_POST
我有一个类型为“POST”的路由。我正在向页面发送帖子数据。我如何访问该帖子数据。例如，在 PHP 中你使用 $_POST
How do I access the post data in scala and play framework?
如何访问 Scala 和 Play 框架中的帖子数据？
回答by Leonya
As of Play 2.1, there are two ways to get at POST parameters:
从 Play 2.1 开始，有两种方法可以获取 POST 参数：
1) Declaring the body as form-urlencoded via an Action parser parameter, in which case the request.body is automatically converted into a Map[String, Seq[String]]:
1) 通过 Action 解析器参数将 body 声明为 form-urlencoded，在这种情况下 request.body 会自动转换为 Map[String, Seq[String]]：
def test = Action(parse.tolerantFormUrlEncoded) { request =>
val paramVal = request.body.get("param").map(_.head)
}
2) By calling request.body.asFormUrlEncoded to get the Map[String, Seq[String]]:
2) 通过调用 request.body.asFormUrlEncoded 来获取 Map[String, Seq[String]]：
def test = Action { request =>
val paramVal = request.body.asFormUrlEncoded.get("param").map(_.head)
}
回答by biesior
Here you've got good sample how it's done in Play:
在这里，您有很好的示例，它是如何在 Play 中完成的：
val loginForm = Form(
tuple(
"email" -> text,
"password" -> text
) verifying ("Invalid email or password", result => result match {
case (email, password) => User.authenticate(email, password).isDefined
})
)
/**
* Handle login form submission.
*/
def authenticate = Action { implicit request =>
loginForm.bindFromRequest.fold(
formWithErrors => BadRequest(html.login(formWithErrors)),
user => Redirect(routes.Projects.index).withSession("email" -> user._1)
)
}
It's described in the documentation of the forms submission
它在表单提交的文档中进行了描述
回答by virtualeyes
as @Marcus points out, bindFromRequest is the preferred approach. For simple one-off cases, however, a field
正如@Marcus 指出的那样， bindFromRequest 是首选方法。然而，对于简单的一次性案例，一个字段
<input name="foo" type="text" value="1">
can be accessed via post'd form like so
可以像这样通过post'd表单访问
val test = Action { implicit request =>
val maybeFoo = request.body.get("foo") // returns an Option[String]
maybeFoo map {_.toInt} getOrElse 0
}
回答by Arvind Audacious
Here you've got good sample how it's done in Play 2:
在这里你有很好的示例，它是如何在 Play 2 中完成的：
def test = Action(parse.tolerantFormUrlEncoded) { request =>
val paramVal = request.body.get("param").map(_.head).getorElse("");
}