错误：无法创建PoolableConnectionFactory（isValid（）返回false）

问题是什么？ 我使用H2 DATABASE

有人解决了我的问题吗？ 我使用H2数据库，Hibernate 5

这个hy HibernateConfig.java

package com.train.shoponlinebackend.config; @Configuration @ComponentScan(basePackages = {"com.train.shoponlinebackend.dto"}) @EnableTransactionManagement public class HibernateConfig { private static String DATABASE_URL = "jdbc:h2:tcp://localhost/~/onlineshopping"; private static String DATABASE_DRIVER = "org.h2.Driver"; private static String DATABASE_DIALECT = "org.hibernate.dialect.H2Dialect"; private static String DATABASE_USERNAME = "sa"; private static String DATABASE_PASSWORD = ""; @Bean public DataSource getDataSource() { BasicDataSource dataSource = new BasicDataSource(); dataSource.setDriverClassName(DATABASE_DRIVER); dataSource.setUrl(DATABASE_URL); dataSource.setUsername(DATABASE_USERNAME); dataSource.setPassword(DATABASE_PASSWORD); return dataSource; } @Bean public SessionFactory getSessionFactory(DataSource dataSource) { LocalSessionFactoryBuilder builder = new LocalSessionFactoryBuilder(dataSource); builder.addProperties(getHibernateProperties()); builder.scanPackages("com.train.shoponlinebackend.dto"); return builder.buildSessionFactory(); } private Properties getHibernateProperties() { // TODO Auto-generated method stub Properties properties = new Properties(); properties.put("hibernate.dialect", DATABASE_DIALECT); properties.put("hibernate.show_sql", true); properties.put("hibernate.format_sql", true); return properties; } @Bean public HibernateTransactionManager getTransactionManager(SessionFactory sessionFactory) { HibernateTransactionManager transactionManager = new HibernateTransactionManager(sessionFactory); return transactionManager; } 

}

我在DAO IMPL中的方法：

 @Repository("categoryDAO") public class CategoryDAOImpl implements CategoryDAO { @Autowired private SessionFactory sessionFactory; @Override @Transactional public boolean add(Category category) { try { // add category sessionFactory.getCurrentSession().persist(category); return true; } catch (Exception e) { e.printStackTrace(); return false; } } } 

我的JUNIT测试

 @Test public void testAdCategory(){ category = new Category(); category.setActive(true); category.setDescription("This is some description of TV"); category.setImageURL("CAT_1.png"); category.setName("Television"); assertEquals("Success added category", true, categoryDAO.add(category)); } 

运行junit测试时出现错误：

 org.springframework.transaction.CannotCreateTransactionException: Could not open Hibernate Session for transaction; nested exception is org.hibernate.exception.GenericJDBCException: Unable to acquire JDBC Connection at org.springframework.orm.hibernate5.HibernateTransactionManager.doBegin(HibernateTransactionManager.java:542) at org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:373) at org.springframework.transaction.interceptor.TransactionAspectSupport.createTransactionIfNecessary(TransactionAspectSupport.java:447) at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:277) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213) at com.sun.proxy.$Proxy28.add(Unknown Source) at com.train.shoponlinebackend.test.CategoryTestCase.testAdCategory(CategoryTestCase.java:36) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26) at org.junit.runners.ParentRunner.run(ParentRunner.java:363) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192) Caused by: org.hibernate.exception.GenericJDBCException: Unable to acquire JDBC Connection at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:47) at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:111) at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:97) at org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.acquireConnectionIfNeeded(LogicalConnectionManagedImpl.java:102) at org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.getPhysicalConnection(LogicalConnectionManagedImpl.java:129) at org.hibernate.internal.SessionImpl.connection(SessionImpl.java:514) at org.springframework.orm.hibernate5.HibernateTransactionManager.doBegin(HibernateTransactionManager.java:448) ... 32 more Caused by: java.sql.SQLException: Cannot create PoolableConnectionFactory (isValid() returned false) at org.apache.commons.dbcp2.BasicDataSource.createPoolableConnectionFactory(BasicDataSource.java:2294) at org.apache.commons.dbcp2.BasicDataSource.createDataSource(BasicDataSource.java:2039) at org.apache.commons.dbcp2.BasicDataSource.getConnection(BasicDataSource.java:1533) at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:122) at org.hibernate.internal.NonContextualJdbcConnectionAccess.obtainConnection(NonContextualJdbcConnectionAccess.java:35) at org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.acquireConnectionIfNeeded(LogicalConnectionManagedImpl.java:99) ... 35 more Caused by: java.sql.SQLException: isValid() returned false at org.apache.commons.dbcp2.PoolableConnection.validate(PoolableConnection.java:284) at org.apache.commons.dbcp2.PoolableConnectionFactory.validateConnection(PoolableConnectionFactory.java:357) at org.apache.commons.dbcp2.BasicDataSource.validateConnectionFactory(BasicDataSource.java:2307) at org.apache.commons.dbcp2.BasicDataSource.createPoolableConnectionFactory(BasicDataSource.java:2290) ... 40 more 

Answer 1

检查pom.xml文件中的h2版本。

如果h2数据库引擎是1.4.194，那么通过maven或gradle为h2数据库驱动程序添加的依赖项也应该是1.4.194。

Answer 2

我将重述根本原因（和解决方案），因为每次要使用H2时都会遇到此问题。 事业是如此简单和明显……

在安装H2并获得有效连接后，请检查您安装的H2 bin Jar（主类）的精确版本（再次 – 在H2服务器位置而不是您的程序）。 这是我正在使用的（本月..）：

 C:\Program Files (x86)\H2\bin\h2-1.4.195.jar 

当然你的H2服务器可能在另一个平台或位置。

规则：当您设置类路径（即项目的maven POM文件）时**始终在程序中指定与H2服务器使用的完全相同的H2 jar文件**（即上面的那个对我来说） 。 H2非常挑剔。

maven用户可能在其POM文件中指定了此内容：

   com.h2database h2 1.4.193   

看“193”？ 这与上面的服务器（见上面的jar）不同（使用195）。

更改使用195的pom将解决问题（替换你在这里使用的任何H2版本）

    com.h2database h2 1.4.195   

如果您感到沮丧或无法访问maven存储库，只需将上面安装的H2服务器jar文件（项目外部）复制到项目中（maven之外）并继续..