postgresql – 没有可用的隐式会话Scala Slick
发布时间:2020-12-13 15:56:46 所属栏目:百科 来源:网络整理
导读:import scala.slick.driver.PostgresDriver.simple._ import scala.slick.session.Database.threadLocalSession object Main extends App { Database.forURL("jdbc:postgresql://localhost:5432/slick",driver = "org.postgresql.Driver",user="postgres",pa
import scala.slick.driver.PostgresDriver.simple._ import scala.slick.session.Database.threadLocalSession object Main extends App { Database.forURL("jdbc:postgresql://localhost:5432/slick",driver = "org.postgresql.Driver",user="postgres",password="postgres") withSession { } ; } 我想要填写“withSession”参数.我试图按照光滑的教程here,但与postgres. 这是我的错误堆栈: > run [info] Running Main [error] (run-main) java.sql.SQLException: No implicit session available; threadLocalSession can only be used within a withSession block java.sql.SQLException: No implicit session available; threadLocalSession can only be used within a withSession block at scala.slick.session.Database$.threadLocalSession(Database.scala:74) at Main$delayedInit$body.apply(main.scala:9) at scala.Function0$class.apply$mcV$sp(Function0.scala:40) at scala.runtime.AbstractFunction0.apply$mcV$sp(AbstractFunction0.scala:12) at scala.App$$anonfun$main$1.apply(App.scala:71) at scala.App$$anonfun$main$1.apply(App.scala:71) at scala.collection.immutable.List.foreach(List.scala:318) at scala.collection.generic.TraversableForwarder$class.foreach(TraversableForwarder.scala:32) at scala.App$class.main(App.scala:71) at Main$.main(main.scala:4) at Main.main(main.scala) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:616) [trace] Stack trace suppressed: run last compile:run for the full output. java.lang.RuntimeException: Nonzero exit code: 1 at scala.sys.package$.error(package.scala:27) [trace] Stack trace suppressed: run last compile:run for the full output. [error] (compile:run) Nonzero exit code: 1 [error] Total time: 0 s,completed Sep 19,2013 3:38:34 PM 谢谢! 解决方法
withSession是您查询的地方.他们需要一个会议.另外请删除threadLocalSession导入而改写
withSession{ implicit session:Session => // <- your queries here } (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |