我不明白什么原因导致Bean创建异常代表返回相同的类。
该类为com.mchange.v2.c3p0.ComboPooledDataSource
,错误显示预计返回 [ com.mchange.v2.c3p0.ComboPooledDataSource ]但返回 [ com.mchange.v2.c3p0.ComboPooledDataSource ]的实例
这是错误:
org.springframework.beans.factory.BeanCreationException:
Error creating bean with name 'dataSourceGCA' defined in class path resource [META-INF/xxxxx-security-app.xml]:
Invocation of init method failed; nested exception is javax.naming.NamingException:
The local resource link [dataSourceGCA2] that refers to global resource [jdbc/dataSourceGCA2Global] was expected to return an instance of [com.mchange.v2.c3p0.ComboPooledDataSource] but returned an instance of [com.mchange.v2.c3p0.ComboPooledDataSource]
我正在使用Java 7和Tomcat 7。
这是数据源的配置:
在 context.xml 中:
<ResourceLink name="jdbc/dataSourceGCA2"
global="jdbc/dataSourceGCA2Global"
auth="Container"
type="com.mchange.v2.c3p0.ComboPooledDataSource" />
在 server.xml 中:
<Resource description="whatever"
name="jdbc/dataSourceGCA2Global"
auth="Container"
factory="org.apache.naming.factory.BeanFactory"
type="com.mchange.v2.c3p0.ComboPooledDataSource"
user="xxxxxxxx"
password="xxxxxxxx"
initialPoolSize="1"
minPoolSize="1"
maxPoolSize="5"
acquireIncrement="1"
driverClass="oracle.jdbc.driver.OracleDriver"
jdbcUrl="jdbc:oracle:thin:@tprodva2:1522/BD2"
testConnectionOnCheckin="true"
idleConnectionTestPeriod="300"
maxIdleTimeExcessConnections="0"
maxIdleTime="0" />
什么会导致这种行为?
感谢任何帮助。
答案 0 :(得分:2)
(会发表评论,但声名太低)
这可能是由两个不同的类加载器加载的同一个类引起的。