scala - 在 play/scala 中以 post 方法发送多部分表单数据

Question

如何在 play scala 中以 post 方法发送多部分表单数据使用:scalaVersion:2.11.7playVersion-2.1.5

Answer 1

你需要做一点代码，然后你就可以像使用它了

val data = MultipartFormData(formFields, "asdasboundarystringas")
WS.url(myUrl).post(data.body)

MultipartFormData的代码可以在github上找到:https://gist.github.com/EECOLOR/7649144

更新

另一种方法，我已经用 Play 2.4.3 尝试过

package controllers

import play.api.Play.current
import play.api.libs.ws._
import play.api._
import play.api.mvc._
import com.ning.http.client.AsyncHttpClient
import com.ning.http.client.multipart.FilePart
import com.ning.http.client.multipart.StringPart
import java.io.File

class Application extends Controller {

  def index = Action {
    val url = "http://symlink.dk/code/php/submit/"

    val asyncHttpClient:AsyncHttpClient = WS.client.underlying
    val postBuilder = asyncHttpClient.preparePost("http://symlink.dk/code/php/submit/")
    val builder = postBuilder.addBodyPart(new StringPart("myField", "abc", "UTF-8"))
      .addBodyPart(new StringPart("myField1", "abc1", "UTF-8"))
      .addBodyPart(new StringPart("myField2", "abc2", "UTF-8"))
      .addBodyPart(new FilePart("myFile", new File("app/controllers/Application.scala")))
    val response = asyncHttpClient.executeRequest(builder.build()).get();
    Ok(response.getResponseBody)
  }

}

符号链接(symbolic link)不验证文件部分，所以我不确定，但文件肯定是发送的

更新

具有身份验证和文件验证

package controllers

import play.api.Play.current
import play.api.libs.ws._
import play.api._
import play.api.mvc._
import com.ning.http.client.AsyncHttpClient
import com.ning.http.client.multipart.FilePart
import com.ning.http.client.multipart.StringPart
import java.io.File
import org.apache.commons.codec.binary.Base64.encodeBase64

class Application extends Controller {

  def index = Action {
    val url = "http://httpbin.org/post"

    val name = "MyUserName"
    val password = "MyPassword"

    val encodedCredentials =
      new String(encodeBase64("%s:%s".format(name, password).getBytes))

    val asyncHttpClient:AsyncHttpClient = WS.client.underlying
    val postBuilder = asyncHttpClient.preparePost(url)
    val builder = postBuilder
      .addHeader("Authorization", "Basic " + encodedCredentials)
      .addBodyPart(new StringPart("myField", "abc", "UTF-8"))
      .addBodyPart(new StringPart("myField1", "abc1", "UTF-8"))
      .addBodyPart(new StringPart("myField2", "abc2", "UTF-8"))
      .addBodyPart(new FilePart("myFile", new File("app/controllers/Application.scala")))
    val response = asyncHttpClient.executeRequest(builder.build()).get();
    Ok(response.getResponseBody)
  }

}

发布数据的回声:

{
  "args": {}, 
  "data": "", 
  "files": {
    "myFile": "package controllers\n\nimport play.api.Play.current\nimport play.api.libs.ws._\nimport play.api._\nimport play.api.mvc._\nimport com.ning.http.client.AsyncHttpClient\nimport com.ning.http.client.multipart.FilePart\nimport com.ning.http.client.multipart.StringPart\nimport java.io.File\nimport org.apache.commons.codec.binary.Base64.encodeBase64\n\nclass Application extends Controller {\n\n  def index = Action {\n//    val url = \"http://symlink.dk/code/php/submit/\"\n    val url = \"http://httpbin.org/post\"\n\n    val name = \"MyUserName\"\n    val password = \"MyPassword\"\n\n    val encodedCredentials =\n      new String(encodeBase64(\"%s:%s\".format(name, password).getBytes))\n\n    val asyncHttpClient:AsyncHttpClient = WS.client.underlying\n    val postBuilder = asyncHttpClient.preparePost(url)\n    val builder = postBuilder\n      .addHeader(\"Authorization\", \"Basic \" + encodedCredentials)\n      .addBodyPart(new StringPart(\"myField\", \"abc\", \"UTF-8\"))\n      .addBodyPart(new StringPart(\"myField1\", \"abc1\", \"UTF-8\"))\n      .addBodyPart(new StringPart(\"myField2\", \"abc2\", \"UTF-8\"))\n      .addBodyPart(new FilePart(\"myFile\", new File(\"app/controllers/Application.scala\")))\n    val response = asyncHttpClient.executeRequest(builder.build()).get();\n    Ok(response.getResponseBody)\n  }\n\n}\n"
  }, 
  "form": {
    "myField": "abc", 
    "myField1": "abc1", 
    "myField2": "abc2"
  }, 
  "headers": {
    "Accept": "*/*", 
    "Authorization": "Basic TXlVc2VyTmFtZTpNeVBhc3N3b3Jk", 
    "Content-Length": "1991", 
    "Content-Type": "multipart/form-data; boundary=ZUeOacX0k9AyI7O12kXDuV5gucDyh2IcA", 
    "Host": "httpbin.org", 
    "User-Agent": "AHC/1.0"
  }, 
  "json": null, 
  "origin": "111.111.111.11", 
  "url": "http://httpbin.org/post"
}

更新

只是为了澄清 - 如果您不需要将文件作为表单的一部分发送，那么您不需要访问底层 WSClient 并且可以使用琐碎的 WS

val url = "http://httpbin.org/post"

val name = "MyUserName"
val password = "MyPassword"

val result = WS.url(url)
  .withAuth(name, password, WSAuthScheme.BASIC)
  .post(
      Map(
        "myField" -> Seq("myValue"),
        "myField1" -> Seq("myValue1"),
        "myField2" -> Seq("myValue2")
      )
    )
val response = Await.result(result, 10 seconds)
Ok(response.body)

请求发送此代码:

{
  "args": {}, 
  "data": "", 
  "files": {}, 
  "form": {
    "myField": "myValue", 
    "myField1": "myValue1", 
    "myField2": "myValue2"
  }, 
  "headers": {
    "Accept": "*/*", 
    "Authorization": "Basic TXlVc2VyTmFtZTpNeVBhc3N3b3Jk", 
    "Content-Length": "51", 
    "Content-Type": "application/x-www-form-urlencoded; charset=utf-8", 
    "Host": "httpbin.org", 
    "User-Agent": "AHC/1.0"
  }, 
  "json": null, 
  "origin": "111.111.111.11", 
  "url": "http://httpbin.org/post"
}