引起:java.sql.SQLException:不支持JDBC4 Connection.isValid()方法

Question

我的play-framework项目在我的本地运行良好,但是当我尝试在heroku中部署它时,我遇到了以下错误.

2015-07-05T06:24:10.456657+00:00 app[web.1]:    at com.google.inject.Guice.createInjector(Guice.java:73)
2015-07-05T06:24:10.456817+00:00 app[web.1]:    at play.api.inject.guice.GuiceApplicationBuilder.build(GuiceApplicationBuilder.scala:93)
2015-07-05T06:24:10.456702+00:00 app[web.1]:    at com.google.inject.Guice.createInjector(Guice.java:62)
2015-07-05T06:24:10.456746+00:00 app[web.1]:    at play.api.inject.guice.GuiceBuilder.injector(GuiceInjectorBuilder.scala:126)
2015-07-05T06:24:10.456863+00:00 app[web.1]:    at play.api.inject.guice.GuiceApplicationLoader.load(GuiceApplicationLoader.scala:21)
2015-07-05T06:24:10.456909+00:00 app[web.1]:    at play.core.server.ProdServerStart$.start(ProdServerStart.scala:52)
2015-07-05T06:24:10.456951+00:00 app[web.1]:    at play.core.server.ProdServerStart$.main(ProdServerStart.scala:27)
2015-07-05T06:24:10.456994+00:00 app[web.1]:    at play.core.server.ProdServerStart.main(ProdServerStart.scala)
2015-07-05T06:24:10.457407+00:00 app[web.1]:    at com.zaxxer.hikari.pool.BaseHikariPool.addConnection(BaseHikariPool.java:441)
2015-07-05T06:24:10.457496+00:00 app[web.1]:    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
2015-07-05T06:24:10.457369+00:00 app[web.1]: Caused by: java.sql.SQLException: JDBC4 Connection.isValid() method not supported, connection test query must be configured
2015-07-05T06:24:10.457602+00:00 app[web.1]:    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
2015-07-05T06:24:10.457451+00:00 app[web.1]:    at com.zaxxer.hikari.pool.BaseHikariPool$1.run(BaseHikariPool.java:413)
2015-07-05T06:24:10.457681+00:00 app[web.1]:    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
2015-07-05T06:24:10.457812+00:00 app[web.1]:    at java.lang.Thread.run(Thread.java:745)
2015-07-05T06:24:10.457768+00:00 app[web.1]:    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
2015-07-05T06:24:11.231007+00:00 heroku[web.1]: Process exited with status 255
2015-07-05T06:24:11.243795+00:00 heroku[web.1]: State changed from starting to crashed
2015-07-05T06:24:11.245013+00:00 heroku[web.1]: State changed from crashed to starting
2015-07-05T06:24:16.259302+00:00 heroku[web.1]: Starting process with command `target/universal/stage/bin/sazors -Dhttp.port=10803`
2015-07-05T06:24:17.542815+00:00 app[web.1]: Picked up JAVA_TOOL_OPTIONS: -Xmx384m -Xss512k -Dfile.encoding=UTF-8
2015-07-05T06:24:18.643391+00:00 app[web.1]: 06:24:18,391 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback.groovy]
2015-07-05T06:24:18.643397+00:00 app[web.1]: 06:24:18,391 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback-test.xml]

我使用PostgreSQL作为我的数据库和光滑的数据库访问库.我尝试谷歌它,并经过一些研究后发现,当配置文件中提供的url不正确或返回null时,可能会导致此错误.我试图解决它,但我无法解决此错误.

这是我的Procfile:

web:target/universal/stage/bin/myapp -Dhttp.port = $ {PORT} -Dconfig.resource = $ {PLAY_CONF_FILE}

和Application.conf

slick.dbs.default.driver="slick.driver.PostgresDriver$"
slick.dbs.default.db.driver="org.postgresql.Driver"
slick.dbs.default.db.url="postgres://rycmvicwkkzofh:Xt2PWggm__FQEHOeq9EoMqTOtF@ec2-54-243-132-114.compute-1.amazonaws.com:5432/d5pr4h65obtb0s"
slick.dbs.default.db.user=rycmuicwkkzofh
slick.dbs.default.db.password="copiedfromheroku"

PS:我正在进行这些修订

play framework version : 2.4.0 slick version : 3.0

编辑:如果我添加slick.dbs.default.db.connectionTestQuery="SELECT 1"我的application.conf它会产生新类型的nullPointerException错误.

That is gone but getting new error now:
2015-07-05T12:22:49.781133+00:00 app[web.1]:    at com.google.inject.Guice.createInjector(Guice.java:73)
2015-07-05T12:22:49.781201+00:00 app[web.1]:    at com.google.inject.Guice.createInjector(Guice.java:62)
2015-07-05T12:22:49.781283+00:00 app[web.1]:    at play.api.inject.guice.GuiceBuilder.injector(GuiceInjectorBuilder.scala:126)
2015-07-05T12:22:49.781361+00:00 app[web.1]:    at play.api.inject.guice.GuiceApplicationBuilder.build(GuiceApplicationBuilder.scala:93)
2015-07-05T12:22:49.781507+00:00 app[web.1]:    at play.core.server.ProdServerStart$.start(ProdServerStart.scala:52)
2015-07-05T12:22:49.781425+00:00 app[web.1]:    at play.api.inject.guice.GuiceApplicationLoader.load(GuiceApplicationLoader.scala:21)
2015-07-05T12:22:49.781599+00:00 app[web.1]:    at play.core.server.ProdServerStart$.main(ProdServerStart.scala:27)
2015-07-05T12:22:49.781669+00:00 app[web.1]:    at play.core.server.ProdServerStart.main(ProdServerStart.scala)
2015-07-05T12:22:49.782161+00:00 app[web.1]: Caused by: java.lang.NullPointerException
2015-07-05T12:22:49.782226+00:00 app[web.1]:    at com.zaxxer.hikari.pool.BaseHikariPool.addConnection(BaseHikariPool.java:446)
2015-07-05T12:22:49.782328+00:00 app[web.1]:    at com.zaxxer.hikari.pool.BaseHikariPool$1.run(BaseHikariPool.java:413)
2015-07-05T12:22:49.782417+00:00 app[web.1]:    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
2015-07-05T12:22:49.782515+00:00 app[web.1]:    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
2015-07-05T12:22:49.783691+00:00 app[web.1]:    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
2015-07-05T12:22:49.783803+00:00 app[web.1]:    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
2015-07-05T12:22:49.783883+00:00 app[web.1]:    at java.lang.Thread.run(Thread.java:745)

Answer 1

Play HikariCP模块(查找"connectionTestQuery"配置)建议您可以按如下方式设置测试查询:

slick.dbs.default.db.connectionTestQuery="/*ping*/ select 1" // or whatever

然后,堆栈跟踪中的错误理论上应该消失.

Answer 2

我相信这个问题已经在Play 邮件列表中讨论过了。

原因是Slick不支持Heroku设置的DATABASE_URL格式。您必须将 DATABASE_URL 解析为 JDBC URL。您可以使用 heroku-jdbc 库相当轻松地完成此操作： https://github.com/jkutner/heroku-jdbc

只需将这样的行添加到您的部门即可：

libraryDependencies += "com.heroku.sdk" % "heroku-jdbc" % "0.1.0"

然后你可以像这样解析 URL：

var jdbcURL = DatabaseUrl.extract.jdbcUrl

然后将该 URL 传递给 slick

编辑

实际上，看起来大多数人都在手动解析 DATABASE_URL，并使用硬编码值设置灵活的配置。这很好，但请注意连接可能会发生变化，并且您必须手动更改设置。

所以你需要将你的配置更改为：

slick.dbs.default.db.url="jdbc:postgresql://host:port/path"

但您可能想要销毁并重新创建数据库，因为您已公开发布了连接详细信息。

我已向 slick 提交了 PR 来解决此问题： https ://github.com/slick/slick/pull/1193