Question

我正在尝试设置一个与本地postgres连接的播放框架服务器。

我当前的applications.conf是这样的：

dbplugin=disabled
db {
  default {
    dataSourceClassName=org.postgresql.ds.PGSimpleDataSource
    dataSource {
      user="postgres"
      password="postgres"
      databaseName="timeseries"
      serverName="localhost"
    }
    hikaricp {
      connectionTestQuery = "SELECT 1"
    }
  }
}

我的build.sbt只添加了最新的postgres jdbc：

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

scalaVersion := "2.11.6"

libraryDependencies ++= Seq(
  javaJdbc
  , cache
  , javaWs
  , "org.postgresql" % "postgresql" % "9.4.1207.jre7"
)

我收到的错误是

[error] - application - 
[info] 
[info] ! @6ookeg34l - Internal server error, for (GET) [/] ->
[info]  
[info] play.api.UnexpectedException: Unexpected exception[CreationException: Unable to create injector, see the following errors:
[info] 
[info] 1) Error in custom provider, Configuration error: Configuration error[Cannot connect to database [default]]
[info]   while locating play.api.db.DBApiProvider
[info]   while locating play.api.db.DBApi
[info]     for parameter 0 at play.db.DefaultDBApi.<init>(DefaultDBApi.java:28)
[info]   at play.db.DefaultDBApi.class(DefaultDBApi.java:28)
[info]   while locating play.db.DefaultDBApi
[info]   while locating play.db.DBApi
[info]     for field at play.db.DBModule$NamedDatabaseProvider.dbApi(DBModule.java:61)
[info]   while locating play.db.DBModule$NamedDatabaseProvider
[info]   at com.google.inject.util.Providers$GuicifiedProviderWithDependencies.initialize(Providers.java:149)
[info]   at play.db.DBModule.bindings(DBModule.java:40):
[info] Binding(interface play.db.Database qualified with QualifierInstance(@play.db.NamedDatabase(value=default)) to ProviderTarget(play.db.DBModule$NamedDatabaseProvider@3782a5cb)) (via modules: com.google.inject.util.Modules$OverrideModule -> play.api.inject.guice.GuiceableModuleConversions$$anon$1)
[info] Caused by: Configuration error: Configuration error[Cannot connect to database [default]]

我发现，我的游戏2.4不需要hikari作为明确的依赖。附加密码和用户名都是正确的以及databsename。

除了框架网站之外，我实际上并不知道在哪里寻找更多信息，我已经广泛检查过了。多人似乎也有类似的问题，虽然他们的解决方案对我没有帮助，或者只是我走这条路的一步。

Answer 1

有两个地方可以确切地了解如何配置连接池：

Play docs: SettingsJDBC
play-jdbc reference.conf file

从那里，您可以看到您的游泳池必须配置为：

db {
  default {
    driver=org.postgresql.Driver
    url="jdbc:postgresql://localhost/timeseries"
    user=postgres
    password=postgres

    hikaricp {
      dataSourceClassName = org.postgresql.ds.PGSimpleDataSource
      connectionTestQuery = "SELECT 1"
      # Data source configuration options. Must be INSIDE
      # the hikaricp "node" here
      dataSource {
        # anything you need to configure here
        ...
      }
    }
  }
}

注意配置节点是如何嵌套的：db - ＆gt; default - ＆gt; hikaricp - ＆gt; dataSource。这是因为dataSource是HikariCP特有的配置。正如您在reference.conf文件中看到的，BoneCP不提供此配置节点。

此外，Typesafe Configuration library同时支持上述配置或写出更多＆＃34;明显＆＃34;如下所示：

db.default.driver=org.postgresql.Driver
db.default.url="jdbc:postgresql://localhost/timeseries"
db.default.user=postgres
db.default.password=postgres
db.default.hikaricp.dataSourceClassName = org.postgresql.ds.PGSimpleDataSource
db.default.hikaricp.connectionTestQuery = "SELECT 1"

Answer 2

还可以尝试：

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js"></script>
<a href="#" class="niva3" data-target="#get1">Link 1</a> 
<a href="#" class="niva3" data-target="#get2">Link 2</a>
<a href="#" class="niva3" data-target="#get3">Link 3</a>

<div class="niva3-dolj" id="get1">[include id="1365"]</div>
<div class="niva3-dolj" id="get2">[include id="1562"]</div>
<div class="niva3-dolj" id="get3">[include id="1565"]</div>

Answer 3

找到答案：

您需要使用以下格式：

dataSourceClassName=org.postgresql.ds.PGSimpleDataSource
dataSource.user=postgres
dataSource.password=sdfsdfasd
dataSource.databaseName=timeseries
dataSource.serverName=localhost
hikaricp .connectionTestQuery = "SELECT 1"

使用Postgres和HikariCP设置Play 2.4.0会产生配置错误

3 个答案: