Java can';t使用Spring、Hibernate和c3p0创建数据源bin
我无法使用Spring、Hibernate和MySql将dataSource bin创建为c3p0连接池 我的错误:Java can';t使用Spring、Hibernate和c3p0创建数据源bin,java,spring,hibernate,c3p0,Java,Spring,Hibernate,C3p0,我无法使用Spring、Hibernate和MySql将dataSource bin创建为c3p0连接池 我的错误: java.lang.NoSuchMethodError: com.mchange.v2.c3p0.impl.C3P0Defaults.dataSourceName()Ljava/lang/String; at com.mchange.v2.c3p0.impl.PoolBackedDataSourceBase.<init>(PoolBackedDataSourc
java.lang.NoSuchMethodError: com.mchange.v2.c3p0.impl.C3P0Defaults.dataSourceName()Ljava/lang/String;
at com.mchange.v2.c3p0.impl.PoolBackedDataSourceBase.<init>(PoolBackedDataSourceBase.java:49)
at com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.<init>(AbstractPoolBackedDataSource.java:74)
at com.mchange.v2.c3p0.ComboPooledDataSource.<init>(ComboPooledDataSource.java:134)
at com.mchange.v2.c3p0.ComboPooledDataSource.<init>(ComboPooledDataSource.java:130)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:147)
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'transactionManager' defined in ServletContext resource [/WEB-INF/dispatcher-servlet.xml]: Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in ServletContext resource [/WEB-INF/dispatcher-servlet.xml]: Cannot resolve reference to bean 'dataSource' while setting bean property 'dataSource'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in ServletContext resource [/WEB-INF/dispatcher-servlet.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [com.mchange.v2.c3p0.ComboPooledDataSource]: Constructor threw exception; nested exception is java.lang.NoSuchMethodError: com.mchange.v2.c3p0.impl.C3P0Defaults.dataSourceName()Ljava/lang/String;
java.lang.NoSuchMethodError:com.mchange.v2.c3p0.impl.C3P0Defaults.dataSourceName()Ljava/lang/String;
位于com.mchange.v2.c3p0.impl.PoolBackedDataSourceBase。(PoolBackedDataSourceBase.java:49)
位于com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource。(AbstractPoolBackedDataSource.java:74)
com.mchange.v2.c3p0.ComboPooledDataSource。(ComboPooledDataSource.java:134)
com.mchange.v2.c3p0.ComboPooledDataSource。(ComboPooledDataSource.java:130)
位于sun.reflect.NativeConstructorAccessorImpl.newInstance0(本机方法)
位于sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
在sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
位于java.lang.reflect.Constructor.newInstance(Constructor.java:526)
位于org.springframework.beans.BeanUtils.InstanceClass(BeanUtils.java:147)
org.springframework.beans.factory.BeanCreationException:使用ServletContext资源[/WEB-INF/dispatcher servlet.xml]中定义的名称“transactionManager”创建bean时出错:设置bean属性“sessionFactory”时无法解析对bean“sessionFactory”的引用;嵌套异常为org.springframework.beans.factory.BeanCreationException:创建名为“sessionFactory”的bean时出错,该名称在ServletContext资源[/WEB-INF/dispatcher servlet.xml]中定义:设置bean属性“dataSource”时无法解析对bean“dataSource”的引用;嵌套异常为org.springframework.beans.factory.BeanCreationException:创建名为“dataSource”的bean时出错,该名称在ServletContext资源[/WEB-INF/dispatcher servlet.xml]中定义:bean实例化失败;嵌套的异常为org.springframework.beans.BeanInstantiationException:无法实例化bean类[com.mchange.v2.c3p0.ComboPooledDataSource]:构造函数引发异常;嵌套的异常是java.lang.NoSuchMethodError:com.mchange.v2.c3p0.impl.C3P0Defaults.dataSourceName()Ljava/lang/String;
我的spring配置:
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
<property name="driverClass" value="com.mysql.jdbc.Driver" />
<property name="jdbcUrl" value="jdbc:mysql://localhost:3306/screenshots" />
<property name="user" value="root" />
<property name="password" value="root" />
<property name="acquireIncrement" value="1"></property>
<property name="minPoolSize" value="5" />
<property name="maxPoolSize" value="10" />
<property name="maxIdleTime" value="1800" />
</bean>
<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean" lazy-init="false" autowire="default">
<property name="dataSource">
<ref local="dataSource" />
</property>
<property name="packagesToScan" value="com.webscreenshots.bean"/>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.max_fetch_depth">3</prop>
<prop key="hibernate.jdbc.fetch_size">50</prop>
<prop key="hibernate.jdbc.batch_size">10</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
</props>
</property>
</bean>
<tx:annotation-driven />
<bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
org.hibernate.dialogue.mysqldialogue
3.
50
10
真的
更新
以及我的POM依赖项:
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.28</version>
</dependency>
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.2.1</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-c3p0</artifactId>
<version>4.3.0.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>4.3.0.Final</version>
</dependency>
mysql
mysql连接器java
5.1.28
com.mchange
c3p0
0.9.2.1
org.hibernate
hibernate-c3p0
4.3.0.1最终版本
org.hibernate
冬眠核心
4.3.0.1最终版本
我正在使用Spring3.2
这是typican配置,我不介意出现什么问题。
您能给我一些建议吗?很可能您的应用程序的类路径中有一个c3p0的旧版本,在某种程度上,再加上类加载器委托,您的有效代码库中会出现c3p0的混合版本。其调用触发NoSuchMethod错误的方法是在0.9.2-pre6(您认为正在使用的版本C3P00.9.2.1)附近添加的。可能您带来了一个0.9.1.x版本以及托管依赖项(请注意,c3p0-0.9.2.x之前的版本与较新版本的组名不同),或者您的某个地方有一个非托管jar文件
上面列出的依赖项看起来不错,hibernate-c3p0-4.3.0.Final依赖于您明确添加的c3p0的同一版本。但是您可能不想显式地将c3p0添加为依赖项,而只是让hibernate-c3p0引入它的版本。请注意,从4.2.3开始,您想要的c3p0版本是一个hibernate依赖项;如果您以某种方式从旧版本引入依赖项,那么您可能会遇到问题。无论如何,您需要了解应用程序的有效类路径(包括JVM扩展目录)并找出旧版本与您要使用的版本共存的位置。我认为问题在于
com.mchange.v2.c3p0.ComboPooledDataSource
类的acquireIncrement
属性,它应该是这样的
<property name="acquireIncrement">1</property>
1
或
尝试更改此设置,然后再次运行应用程序
希望这能解决你的问题
<property name="acquireIncrement" value="1"/>