Exception in thread "main" java.sql.SQLException: Connections could not be acquired from the underly

来源：互联网发布：c语言问号表达式编辑：程序博客网时间：2024/06/14 18:57

2015-01-10 16:00

at com.mchange.v2.sql.SqlUtils.toSQLException(SqlUtils.java:106)at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:529)at com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.getConnection(AbstractPoolBackedDataSource.java:128)at lee.BeanTest.main(BeanTest.java:26)Caused by: 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)... 2 more-------------------代码public static void main(String[] args)throws Exception{ApplicationContext ctx = newClassPathXmlApplicationContext("bean.xml");DataSource ds = (DataSource)ctx.getBean("dataSource");Connection conn = ds.getConnection();PreparedStatement pstmt = conn.prepareStatement("insert into news_inf value(null , ? , ?)");pstmt.setString(1 , "XXXX");pstmt.setString(2 , "YYYY");pstmt.executeUpdate();pstmt.close();conn.close();}bean。xml就不发出来了，上面与c3p0数据源的配置 是OK的  ------------------------------应该是连接mysql的密码出错了

java报错是怎么回事，我只想连下数据库而已

2015-01-10 16:00白羊luojishu | 分类：数据库DB | 浏览15次

Exception in thread "main" java.sql.SQLException: Connections could not be acquired from the underlying database!at com.mchange.v2.sql.SqlUtils.toSQLException(SqlUtils.java:106)at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:529)at com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.getConnection(AbstractPoolBackedDataSource.java:128)at lee.BeanTest.main(BeanTest.java:26)Caused by: 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)... 2 more-------------------代码public static void main(String[] args)throws Exception{ApplicationContext ctx = newClassPathXmlApplicationContext("bean.xml");DataSource ds = (DataSource)ctx.getBean("dataSource");Connection conn = ds.getConnection();PreparedStatement pstmt = conn.prepareStatement("insert into news_inf value(null , ? , ?)");pstmt.setString(1 , "疯狂Java讲义");pstmt.setString(2 , "Struts 2权威指南");pstmt.executeUpdate();pstmt.close();conn.close();}bean。xml就不发出来了，上面与c3p0数据源的配置 是OK的

0 0