Play Framework 2.6.x ebean：DataSource 仅在生产中为空

Question

Java 版本：9.0.4（我也试过 10.0.2）

播放版本：2.6.15（也是2.6.18）

Play-ebean：4.1.3

该项目使用 sbt run 运行良好，但尝试在生产环境中运行它（完全相同的环境），会导致此错误。 “DataSource 用户为空？”

感谢任何见解！

这是完整的日志，我的 conf 设置如下。

[warn] o.h.v.m.ParameterMessageInterpolator - HV000184: ParameterMessageInterpolator has been chosen, EL interpolation will not be supported
[error] io.ebean.Ebean - Error trying to create the default EbeanServer
java.lang.RuntimeException: DataSource user is null?
        at org.avaje.datasource.pool.ConnectionPool.<init>(ConnectionPool.java:207)
        at org.avaje.datasource.core.Factory.createPool(Factory.java:15)
        at io.ebeaninternal.server.core.DefaultContainer.getDataSourceFromConfig(DefaultContainer.java:334)
        at io.ebeaninternal.server.core.DefaultContainer.setDataSource(DefaultContainer.java:278)
        at io.ebeaninternal.server.core.DefaultContainer.createServer(DefaultContainer.java:117)
        at io.ebeaninternal.server.core.DefaultContainer.createServer(DefaultContainer.java:88)
        at io.ebeaninternal.server.core.DefaultContainer.createServer(DefaultContainer.java:45)
        at io.ebean.EbeanServerFactory.create(EbeanServerFactory.java:58)
        at io.ebean.Ebean$ServerManager.getWithCreate(Ebean.java:202)
        at io.ebean.Ebean$ServerManager.<init>(Ebean.java:160)
Oops, cannot start the server.
Exception in thread "main" com.google.common.util.concurrent.UncheckedExecutionException: java.lang.IllegalArgumentException
        at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2218)
        at com.google.common.cache.LocalCache.get(LocalCache.java:4147)
        at com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:4151)
        at com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:5140)
        at com.google.common.cache.LocalCache$LocalLoadingCache.getUnchecked(LocalCache.java:5146)
        at com.google.inject.internal.util.StackTraceElements.forMember(StackTraceElements.java:70)
        at com.google.inject.internal.Errors.formatSource(Errors.java:817)
        at com.google.inject.internal.Errors.formatSource(Errors.java:796)
        at com.google.inject.internal.Errors.formatInjectionPoint(Errors.java:849)
        at com.google.inject.internal.Errors.formatSource(Errors.java:811)
        at com.google.inject.internal.Errors.formatSource(Errors.java:796)
        at com.google.inject.internal.Errors.format(Errors.java:590)
        at com.google.inject.CreationException.getMessage(CreationException.java:50)
        at java.base/java.lang.Throwable.getLocalizedMessage(Throwable.java:396)
        at java.base/java.lang.Throwable.toString(Throwable.java:485)
        at java.base/java.lang.String.valueOf(String.java:2788)
        at java.base/java.io.PrintStream.println(PrintStream.java:897)
        at java.base/java.lang.Throwable$WrappedPrintStream.println(Throwable.java:752)
        at java.base/java.lang.Throwable.printStackTrace(Throwable.java:659)
        at java.base/java.lang.Throwable.printStackTrace(Throwable.java:648)
        at java.base/java.lang.Throwable.printStackTrace(Throwable.java:639)
        at play.core.server.RealServerProcess.$anonfun$exit$1(ServerProcess.scala:49)
        at play.core.server.RealServerProcess.$anonfun$exit$1$adapted(ServerProcess.scala:49)
        at scala.Option.foreach(Option.scala:257)
        at play.core.server.RealServerProcess.exit(ServerProcess.scala:49)
        at play.core.server.ProdServerStart$.start(ProdServerStart.scala:74)
        at play.core.server.ProdServerStart$.main(ProdServerStart.scala:25)
        at play.core.server.ProdServerStart.main(ProdServerStart.scala)
Caused by: java.lang.IllegalArgumentException
        at com.google.inject.internal.asm.$ClassReader.<init>(Unknown Source)
        at com.google.inject.internal.asm.$ClassReader.<init>(Unknown Source)
        at com.google.inject.internal.asm.$ClassReader.<init>(Unknown Source)
        at com.google.inject.internal.util.LineNumbers.<init>(LineNumbers.java:66)
        at com.google.inject.internal.util.StackTraceElements$1.load(StackTraceElements.java:46)
        at com.google.inject.internal.util.StackTraceElements$1.load(StackTraceElements.java:43)
        at com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3708)
        at com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2416)
        at com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2299)
        at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2212)
        ... 27 more

应用配置设置：

db {
  default.driver=com.mysql.jdbc.Driver
  default.url="jdbc:mysql://1.1.1.1/db_name?characterEncoding=UTF8&autoReconnect=true&useSSL=false"
  default.username=user
  default.password="pwd"
}

Answer 1

所以这似乎对我有用。这个问题本质上是不稳定的，所以我不能确定。

@Inject
    public Repository(EbeanConfig ebeanConfig, DynamicEvolutions dynamicEvolutions,
                      DatabaseExecutionContext executionContext, Config config) {
        this.ebeanServer = Ebean.getServer(ebeanConfig.defaultServer());
        this.executionContext = executionContext;
    }

所以这基本上是将 EbeanConfig 和 DynamicEvolutions 注入到任何调用 Ebean.getServer(); 的类中

我在这个问题线程上找到了这个，

https://github.com/playframework/play-ebean/issues/51

在 2.6.x 和 ebean 4.1.3 上使用它，如上所述，它似乎有效。