应用程序在部署 Heroku Play 后崩溃！框架（double 类型不存在）

Question

我无法使用 PostgreSQL 数据库在 Heroku 上正确部署我的 Play Frmaework app (Java)。

Procfile

web: target/universal/stage/bin/name -Dhttp.port=${PORT} -DapplyEvolutions.default=true -Ddb.default.driver=org.postgresql.Driver -Ddb.default.url=$DATABASE_URL

built.sbt:

name := """name"""

version := "1.0-SNAPSHOT"

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

scalaVersion := "2.11.1"

libraryDependencies ++= Seq(
  javaJdbc,
  javaEbean,
  cache,
  javaWs
)

libraryDependencies += "org.postgresql" % "postgresql" % "9.3-1100-jdbc4"

Heroku 的日志:

←[36m2015-05-20T13:35:43.429517+00:00 app[web.1]:←[0m @6m7pfofpb: Database 'default' is in an inconsistent state! ←[36m2015-05-20T13:35:43.412967+00:00 app[web.1]:←[0m [←[31merror←[0m] play - ERROR: type "double" does not exist ←[36m2015-05-20T13:35:43.412974+00:00 app[web.1]:←[0m Position: 320 [ERROR:0, SQLSTATE:42704] ←[36m2015-05-20T13:35:43.428889+00:00 app[web.1]:←[0m Oops, cannot start the server. ←[36m2015-05-20T13:35:43.429771+00:00 app[web.1]:←[0m at play.api.db.evolutions.Evolutions$.checkEvolutionsState(Evolutions.scala:196) ←[36m2015-05-20T13:35:43.429822+00:00 app[web.1]:←[0m at play.api.db.evolutions.Evolutions$.databaseEvolutions(Evolutions.scala:367) ←[36m2015-05-20T13:35:43.429871+00:00 app[web.1]:←[0m at play.api.db.evolutions.Evolutions$$anonfun$evolutionScript.apply(Evolutions.scala:332) ←[36m2015-05-20T13:35:43.429907+00:00 app[web.1]:←[0m at play.api.db.evolutions.Evolutions$$anonfun$evolutionScript.apply(Evolutions.scala:330) ←[36m2015-05-20T13:35:43.433005+00:00 app[web.1]:←[0m at scala.Option.map(Option.scala:145) ←[36m2015-05-20T13:35:43.433063+00:00 app[web.1]:←[0m at play.api.db.evolutions.Evolutions$.evolutionScript(Evolutions.scala:330) ←[36m2015-05-20T13:35:43.433140+00:00 app[web.1]:←[0m at play.api.db.evolutions.EvolutionsPlugin$$anonfun$onStart$$anonfun$apply.apply$mcV$sp(Evolutions.scala:486) ←[36m2015-05-20T13:35:43.433214+00:00 app[web.1]:←[0m at play.api.db.evolutions.EvolutionsPlugin.withLock(Evolutions.scala:531) ←[36m2015-05-20T13:35:43.433254+00:00 app[web.1]:←[0m at play.api.db.evolutions.EvolutionsPlugin$$anonfun$onStart.apply(Evolutions.scala:485) ←[36m2015-05-20T13:35:43.433294+00:00 app[web.1]:←[0m at play.api.db.evolutions.EvolutionsPlugin$$anonfun$onStart.apply(Evolutions.scala:483) ←[36m2015-05-20T13:35:43.433333+00:00 app[web.1]:←[0m at scala.collection.immutable.List.foreach(List.scala:383) ←[36m2015-05-20T13:35:43.433450+00:00 app[web.1]:←[0m at play.api.db.evolutions.EvolutionsPlugin.onStart(Evolutions.scala:483) ←[36m2015-05-20T13:35:43.433528+00:00 app[web.1]:←[0m at play.api.Play$$anonfun$start$$anonfun$apply$mcV$sp.apply(Play.scala:91) ←[36m2015-05-20T13:35:43.433588+00:00 app[web.1]:←[0m at play.api.Play$$anonfun$start$$anonfun$apply$mcV$sp.apply(Play.scala:91) ←[36m2015-05-20T13:35:43.433638+00:00 app[web.1]:←[0m at scala.collection.immutable.List.foreach(List.scala:383) ←[36m2015-05-20T13:35:43.433676+00:00 app[web.1]:←[0m at play.api.Play$$anonfun$start.apply$mcV$sp(Play.scala:91) ←[36m2015-05-20T13:35:43.433728+00:00 app[web.1]:←[0m at play.api.Play$$anonfun$start.apply(Play.scala:91) ←[36m2015-05-20T13:35:43.433774+00:00 app[web.1]:←[0m at play.api.Play$$anonfun$start.apply(Play.scala:91) ←[36m2015-05-20T13:35:43.433809+00:00 app[web.1]:←[0m at play.utils.Threads$.withContextClassLoader(Threads.scala:21) ←[36m2015-05-20T13:35:43.433864+00:00 app[web.1]:←[0m at play.api.Play$.start(Play.scala:90) ←[36m2015-05-20T13:35:43.433912+00:00 app[web.1]:←[0m at play.core.StaticApplication.(ApplicationProvider.scala:55) ←[36m2015-05-20T13:35:43.434109+00:00 app[web.1]:←[0m at play.core.server.NettyServer$.createServer(NettyServer.scala:244) ←[36m2015-05-20T13:35:43.434194+00:00 app[web.1]:←[0m at play.core.server.NettyServer$$anonfun$main.apply(NettyServer.scala:280) ←[36m2015-05-20T13:35:43.434302+00:00 app[web.1]:←[0m at play.core.server.NettyServer$$anonfun$main.apply(NettyServer.scala:275) ←[36m2015-05-20T13:35:43.434388+00:00 app[web.1]:←[0m at scala.Option.map(Option.scala:145) ←[36m2015-05-20T13:35:43.434467+00:00 app[web.1]:←[0m at play.core.server.NettyServer$.main(NettyServer.scala:275) ←[36m2015-05-20T13:35:43.434565+00:00 app[web.1]:←[0m at play.core.server.NettyServer.main(NettyServer.scala) ←[36m2015-05-20T13:35:44.389152+00:00 heroku[web.1]:←[0m State changed from starting to crashed ←[36m2015-05-20T13:35:44.376937+00:00 heroku[web.1]:←[0m Process exited with status 255

我特别看不懂这行日志

00:00 app[web.1]:←[0m [←[31merror←[0m] play - ERROR: type "double" does not exist

当然，我的一些项目有一些双重属性class。为什么double类型会出错？

任何 advice/ideas 欢迎 :)

编辑 1
这是我使用 double 类型的仅有的两个 classes。
汽车

@Entity
public class Car extends Model{

    @Id
    @GeneratedValue
    private int id; 
    @ManyToOne
    @JoinColumn(name="user_fk")
    private User user; 
    private String brand; 
    private String model; 
    @Column(unique = true)
    private String licencePlate; 
    private String fuel;
    private int nbSits; 
    @Column(name = "avg_cons", columnDefinition = "REAL")
    private double avgCons; // Average consumption
    @Column(name = "co2_cons", columnDefinition = "REAL")
    private double co2Cons;
    @Column(name = "htva_price", columnDefinition = "REAL")
    private double htvaPrice; 
    @Column(name = "leasing_price", columnDefinition = "REAL")
    private double leasingPrice;
    @Column(columnDefinition = "REAL")
    private double mileage; 
    @Column(columnDefinition = "REAL")
    private boolean availability;
}

交易

@Entity
@Table(name = "transactions")
public class Transaction extends Model{

    @Id
    @GeneratedValue
    private int id; 
    @OneToOne
    @JoinColumn(name = "car_fk")
    private Car car;
    @OneToOne 
    @JoinColumn(name = "driver")
    private User driver;  
    @Column(name = "from_date")
    private Timestamp fromDate; 
    @Column(name = "to_date")
    private Timestamp toDate; 
    @Column(name = "start_mileage", columnDefinition = "REAL")
    private double startMileage; 
    @Column(name = "end_mileage", columnDefinition = "REAL")
    private double endMileage;
    @Column(columnDefinition = "REAL")
    private double avgCons; 
    private String status; 
    private boolean exchange; 
}

Answer 1

PostgreSQL 使用列类型 double precision 并且不知道列类型 double

我建议尝试

@Column(columnDefinition = "NUMERIC")
private BigDecimal startMileage;

columnDefinition 的值实际上是 DDL 语句的一部分，这就是为什么您应该检查 1.sql 以查看究竟生成了什么（由 Ebean）

应用程序在部署 Heroku Play 后崩溃！框架（double 类型不存在）

App crashed after deployment Heroku Play! Framework (type double does not exist)

heroku

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playframework-2.3