我在使用数据库时遇到问题
我本来打算看这个教程http://vimeo.com/58969923#（来自 playframework.com 页面的一张）
在模型中：
play-2.2.1/jcirs/app/models/MedicalIncident.java
公共类 MedicalIncident 扩展模型{}
我正在尝试使用实体。为此我必须导入：
javax.persistence.* 和 play.db.ebean.*
但都找不到。
错误是
包 javax.persistence 不存在
我应该怎么办？
使用其他数据库引擎吗？或者应该下载一些依赖项。
我想以最好的方式使用 playframework。
请帮忙。
我的配置
应用程序.conf：
db.default.driver=org.h2.Driver
db.default.url="jdbc:h2:mem:play"
ebean.default="models.*"
堆栈跟踪：
[jcirs] $ run 8081
--- (Running the application from SBT, auto-reloading is enabled) ---
[info] play - Listening for HTTP on /0:0:0:0:0:0:0:0:8081
(Server started, use Ctrl+D to stop and go back to the console...)
[info] Compiling 5 Scala sources and 5 Java sources to /home/daniel/play-2.2.1/jcirs/target/scala-2.10/classes...
[error] /home/daniel/play-2.2.1/jcirs/app/models/MedicalIncident.java:4: error: package javax.persistence does not exist
[error] import javax.persistence.*;
[error] ^
[error] /home/daniel/play-2.2.1/jcirs/app/models/MedicalIncident.java:6: error: package play.db.ebean does not exist
[error] import play.db.ebean.*;
[error] ^
[error] /home/daniel/play-2.2.1/jcirs/app/models/MedicalIncident.java:14: error: cannot find symbol
[error] public class MedicalIncident extends Model {
[error] ^
[error] symbol: class Model
[error] /home/daniel/play-2.2.1/jcirs/app/models/MedicalIncident.java:13: error: cannot find symbol
[error] @Entity
[error] ^
[error] symbol: class Entity
[error] /home/daniel/play-2.2.1/jcirs/app/models/MedicalIncident.java:15: error: cannot find symbol
[error] @id
[error] ^
[error] symbol: class id
[error] location: class MedicalIncident
[error] /home/daniel/play-2.2.1/jcirs/app/controllers/MedicalIncident.java:21: error: cannot find symbol
[error] MedicalIncident medical_incident = Form.form(MedicalIncident.class).bindFormRequest().get();
[error] ^
[error] symbol: variable Form
[error] location: class MedicalIncident
[error] 6 errors
[error] (compile:compile) javac returned nonzero exit code
[error] application -
! @6gfjpj0cf - Internal server error, for (GET) [/] ->
play.PlayExceptions$CompilationException: Compilation error[error: package javax.persistence does not exist]
at play.PlayReloader$$anon$1$$anonfun$reload$2$$anonfun$apply$14$$anonfun$apply$16.apply(PlayReloader.scala:304) ~[na:na]
at play.PlayReloader$$anon$1$$anonfun$reload$2$$anonfun$apply$14$$anonfun$apply$16.apply(PlayReloader.scala:304) ~[na:na]
at scala.Option.map(Option.scala:145) ~[scala-library.jar:na]
at play.PlayReloader$$anon$1$$anonfun$reload$2$$anonfun$apply$14.apply(PlayReloader.scala:304) ~[na:na]
at play.PlayReloader$$anon$1$$anonfun$reload$2$$anonfun$apply$14.apply(PlayReloader.scala:298) ~[na:na]
at scala.Option.map(Option.scala:145) ~[scala-library.jar:na]
[warn] play - No application found at invoker init
您是否更新了 Build.scala 中的项目依赖项？
不确定 Play 2.2.1 中是否有任何更改，但对于 Play 2.1.3 Build.scala 中的依赖项将如下所示：
val appDependencies = Seq(
javaCore,
javaJdbc,
javaEbean
)
编辑：
一旦您更新了 Build.scala 中的依赖项，请不要忘记通过运行相应的 play 命令来更新 IDEA 或 Eclipse 中的依赖项，例如
play idea
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