Scala Play抛出RuntimeException:java.lang.ExceptionInInitializerError

我有以下播放控制器：

package controllers

import models.{Page, DB}
import play.api._
import play.api.data.Form
import play.api.data.Forms._
import play.api.libs.json.Json
import play.api.mvc._

class Application extends Controller {

  def index = Action {
    Ok(views.html.index("Your new application is ready."))
  }

  val pageForm: Form[Page] = Form {
    mapping (
      "url" -> text
    )(Page.apply)(Page.unapply)
  }

  def addPage = Action { implicit request =>
    val page = pageForm.bindFromRequest.get
    DB.save(page)
    Redirect(routes.Application.index)
  }

  def getPages = Action {
    val page = DB.query[Page].fetch
    Ok(Json.toJson(page))
  }
}

此控制器访问此模型：

package models

import java.net.URL

import play.api.libs.json.Json

case class Page(url: String) {
  var content: String = new URL(url).getContent().toString;
}

object Page {
  implicit val personFormat = Json.format[Page]
}

并存储在数据库中，如下所示：

package models

import sorm._

object DB extends Instance(entities = Seq(Entity[Page]()), url="jdbc:h2:mem:test")

 <form action="@routes.Application.addPage" method="post">
        <input name="url" type="text">
        <button>Add Page</button>
    </form>

我从UI创建模型的新实例，如下所示：

package models

import sorm._

object DB extends Instance(entities = Seq(Entity[Page]()), url="jdbc:h2:mem:test")

 <form action="@routes.Application.addPage" method="post">
        <input name="url" type="text">
        <button>Add Page</button>
    </form>

我的

build.sbt

文件：

name := """ScalaWeb"""

version := "1.0-SNAPSHOT"

lazy val root = (project in file(".")).enablePlugins(PlayScala)

scalaVersion := "2.11.7"

libraryDependencies ++= Seq(
  jdbc,
  cache,
  ws,
  specs2 % Test
)

libraryDependencies ++= Seq(
  "org.sorm-framework" % "sorm" % "0.3.19",
  "org.scala-lang" % "scala-compiler" % scalaVersion.value force(),
  "com.h2database" % "h2" % "1.3.148"
)

resolvers += "scalaz-bintray" at "http://dl.bintray.com/scalaz/releases"

// Play provides two styles of routers, one expects its actions to be injected, the
// other, legacy style, accesses its actions statically.
routesGenerator := InjectedRoutesGenerator

scalacOptions += "-Ylog-classpath"

---

错误消息不是很具有描述性。此代码有什么问题？

请向我们展示您的

版本。sbt

可能您忘记添加h2依赖项：

val appDependencies = Seq(
  "org.sorm-framework" % "sorm" % "0.3.118",
  "com.h2database" % "h2" % "1.3.168"
)

---

并使用名称

Db

代替

Db

。Big

DB

是play数据库API的一部分

请发布完整的堆栈跟踪。我添加了完整的堆栈跟踪。你有没有设法解决这个问题？事实上，h2依赖项并不存在。现在我已经添加了它（你可以在我更新的帖子中看到），但是同样的错误消息出现了。