找不到com.mchange.v2.c3p0.ComboPooledDataSource

其他 2018-11-20 15:20:57 阅读次数: 0

最近需要编写mysql连接池需求，发现网上有的教程利用c3P0进行编程，给出的需要的jar包如截图

截图中给出的jar中找不到ComboPooledDataSource ，原因在于第一个jar包版本应该不低于0.9.5.2才可以

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转载自blog.csdn.net/u011806486/article/details/73201546

找不到com.mchange.v2.c3p0.ComboPooledDataSource

Class 'com.mchange.v2.c3p0.ComboPooledDataSource' not found [config set

nested exception is java.lang.ClassNotFoundException: com.mchange.v2.c3p0.ComboPooledDataSource

Invalid property 'url' of bean class [com.mchange.v2.c3p0.ComboPooledDataSource]

Failed to instantiate [com.mchange.v2.c3p0.ComboPooledDataSource]: No default constructor found

C3P0的详细配置说明（com.mchange.v2.c3p0.ComboPooledDataSource）

转：C3P0的详细配置说明（com.mchange.v2.c3p0.ComboPooledDataSource）

Cannot find class [com.mchange.v2.c3p0.ComboPooledDataSource] for bean with name 'dataSource' define

【异常】nested exception is java.lang.ClassNotFoundException: com.mchange.v2.c3p0.ComboPooledDataSource

SQLException: com.mchange.v2.c3p0.ComboPooledDataSource [ java.beans.IntrospectionException: java.lang.reflect.InvocationTargetException [numThreadsAwaitingCheckoutDefaultUser] ] has been closed()

Tomcat启动时执行到Initializing c3p0 pool... com.mchange.v2.c3p0.ComboPooledDataSource...时卡住

Spring启动卡壳情况：com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.getPoolManag…

Could not load com.mchange.v2.c3p0.impl.PoolBackedDataSourceBaseBeanInfo.

java.lang.AbstractMethodError：com.mchange.v2.c3p0.impl.NewProxyResultSet.isClosed

java.lang.AbstractMethodError:com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.setCharacterStream

com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.setBinaryStream(IL

com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource getPoolManager

Invalid property 'url' of bean class com mchange v2 c3p0 Co

java.lang.AbstractMethodError: Method com/mchange/v2/c3p0/impl/

com.mchange.v2.c3p0.impl.NewProxyConnection cannot be cast to com.mysql.jdbc

Exception:com.mchange.v2.c3p0.impl.NewProxyConnection cannot be cast to oracle.j

java.lang.AbstractMethodError: Method com/mchange/v2/c3p0/impl/NewProxyPrepa

c3p0 error java.lang.NoClassDefFoundError:com.mchange.v2.ser.Indirector

java.lang.AbstractMethodError: Method com/mchange/v2/c3p0/impl/NewProxyPreparedStatement.isClosed()Z

java.lang.AbstractMethodError: Receiver class com.mchange.v2.c3p0.impl.NewProxyPreparedStatement doe

解决SSM：Method com/mchange/v2/c3p0/impl/NewProxyResultSet.isClosed()Z is abstract

解决C3P0连接中Caused by: com.mchange.v2.resourcepool.CannotAcquireResourceException: A ResourcePool

【SSM】Method com/mchange/v2/c3p0/impl/NewProxyResultSet.isClosed()Z is abstract

c3p0错误：java.lang.ClassNotFoundException: com.mchange.v2.ser.Indirector

报错： AbstractMethodError: Method com/mchange/v2/c3p0/impl/NewProxyResultSet.isClosed()Z is abstract

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