Java 如何在 Play Framework 中获取表单数据
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How to get form data in Play Framework
提问by Gandalf StormCrow
I found this neat post before asking this question (but doesn't solve my problem) :
在问这个问题之前，我发现了这个整洁的帖子（但没有解决我的问题）：
I'm trying to update a record with ajax call using play framework as a backend.
我正在尝试使用播放框架作为后端使用 ajax 调用更新记录。
Here is some data regarding my request :
以下是有关我的请求的一些数据：
Request URL:http://172.20.12.50:9000/updateName
Request Method:PUT
Form Data
name=&value=Testttt&pk=367
Here is how I try to test what I get on the server side :
这是我尝试测试我在服务器端获得的内容的方法：
Logger.info("PK IS " + request().getQueryString("pk"));
This is what I get in the log:
这是我在日志中得到的：
[info] application - PK IS null
How would I get these params from FormData? I got this data regarding my request from firebug
我如何从 FormData 获取这些参数？我从萤火虫那里得到了关于我的请求的数据
采纳答案by mguillermin
The POST data is available in a controller with request().body().
POST 数据在带有request().body().
On the body, you can call .asFormUrlEncoded()to retrieve a Mapof the data. You will find more information in the documentation.
在正文上，您可以调用.asFormUrlEncoded()以检索Map数据。您将在文档中找到更多信息。
For more complex use cases, you can use the Form APIto define data constraints and validation and bind data directly to a specific class.
对于更复杂的用例，您可以使用Form API来定义数据约束和验证并将数据直接绑定到特定类。
回答by Chris Beach
Adapted from http://www.playframework.com/documentation/2.0/ScalaForms
改编自http://www.playframework.com/documentation/2.0/ScalaForms
import play.api.data._
import play.api.data.Forms._
case class MyFormData(name: Option[String], value: String, pk: Long)
val myForm = Form(
mapping(
"name" -> optional(text),
"value" -> text,
"pk" -> number
)(MyFormData.apply)(MyFormData.unapply)
)
myForm.bindFromRequest.fold(
formWithErrors => // binding failure, you retrieve the form containing errors,
value => // binding success, you get the MyFormData value
)
Obviously substitute MyFormDatafor something meaningful to your domain.
显然可以替代MyFormData对您的领域有意义的东西。
回答by Ducaz035
You can get it for files:
您可以为文件获取它：
val music = request.body.file("music").get
for body parts as an example:
以身体部位为例：
var tracktitle = ""
request.body.dataParts.get("tracktitle").get.foreach(value => tracktitle = value)
