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我最近刚刚从 EC2 迁移到 OpenShift，因为 Openshift 有这些应用程序，只需单击一下即可快速安装（他们称之为墨盒），但是我现在使用这个 MySql 墨盒有一个问题。

我在 OpenShift 中部署了 spring webapp，硬编码 mysql 服务器的 db URL、USERNAME、PASSWORD 不起作用。大多数论坛建议使用环境变量来指向数据库 url、用户、密码，但仍然无法正常工作。但我担心的是，即使我硬编码了数据库 url、用户名和密码，它至少也会起作用。

任何有用和有用的解决方案将不胜感激。

 SEVERE: Servlet.service() for servlet [dispatcher] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.orm.hibernate3.HibernateJdbcException: JDBC exception on Hibernate data access: SQLException for SQL [n/a]; SQL state [null]; error code [0]; Could not open connection; nested exception is org.hibernate.exception.GenericJDBCException: Could not open connection] with root cause
com.mchange.v2.resourcepool.CannotAcquireResourceException: A ResourcePool could not acquire a resource from its primary factory or source.
        at com.mchange.v2.resourcepool.BasicResourcePool.awaitAvailable(BasicResourcePool.java:1319)
        at com.mchange.v2.resourcepool.BasicResourcePool.prelimCheckoutResource(BasicResourcePool.java:557)
        at com.mchange.v2.resourcepool.BasicResourcePool.checkoutResource(BasicResourcePool.java:477)
        at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:525)
        at com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.getConnection(AbstractPoolBackedDataSource.java:128)
        at org.hibernate.service.jdbc.connections.internal.C3P0ConnectionProvider.getConnection(C3P0ConnectionProvider.java:79)
        at org.hibernate.internal.AbstractSessionImpl$NonContextualJdbcConnectionAccess.obtainConnection(AbstractSessionImpl.java:277)
        at org.hibernate.engine.jdbc.internal.LogicalConnectionImpl.obtainConnection(LogicalConnectionImpl.java:297)
        at org.hibernate.engine.jdbc.internal.LogicalConnectionImpl.getConnection(LogicalConnectionImpl.java:169)
        at org.hibernate.engine.jdbc.internal.proxy.ConnectionProxyHandler.extractPhysicalConnection(ConnectionProxyHandler.java:82)
        at org.hibernate.engine.jdbc.internal.proxy.ConnectionProxyHandler.continueInvocation(ConnectionProxyHandler.java:138)
        at org.hibernate.engine.jdbc.internal.proxy.AbstractProxyHandler.invoke(AbstractProxyHandler.java:81)
        at com.sun.proxy.$Proxy63.prepareStatement(Unknown Source)
        at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$5.doPrepare(StatementPreparerImpl.java:147)
        at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:166)
        at org.hibernate.engine.jdbc.internal.StatementPreparerImpl.prepareQueryStatement(StatementPreparerImpl.java:145)
        at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1720)
        at org.hibernate.loader.Loader.doQuery(Loader.java:828)
        at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:289)
        at org.hibernate.loader.Loader.doList(Loader.java:2447)
        at org.hibernate.loader.Loader.doList(Loader.java:2433)
        at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2263)
        at org.hibernate.loader.Loader.list(Loader.java:2258)
        at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:470)
        at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:355)
        at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:196)
        at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1161)
        at org.hibernate.internal.QueryImpl.list(QueryImpl.java:101)
        at org.hibernate.ejb.QueryImpl.getResultList(QueryImpl.java:252)
        at org.springframework.data.jpa.repository.query.JpaQueryExecution$CollectionExecution.doExecute(JpaQueryExecution.java:77)
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1 回答 1

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If you are running a scaled application, then you also need to use the environment variable for the database port, as it will not be the standard 3306. You can check this by sshing into your gear and running env | grep MYSQL and see what it prints out.

于 2013-11-28T05:19:35.337 回答