线程“main”中的异常org.springframework.beans.factory.UnsatisfiedDependencyException

<bean id="datasource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
     <property name="driverClassName" value="oracle.jdbc.driver.OracleDriver"/>
     <property name="url" value="jdbc:oracle:thin:@localhost:1521:xe"/>
     <property name="username" value="system"/>
     <property name="password" value="manager"/>
    </bean>

    <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
    <constructor-arg ref="datasource"/>
    </bean>
    <bean id="projectdao" class="com.query.dao.ProjectDAO">
    <constructor-arg ref="jdbcTemplate"/> 
</bean>

线程“main”中的异常org.springframework.beans.factory.UnsatisfiedDependencyException：在类路径资源[com / query / comman / application-context.xml]中定义名称为'projectdao'的bean时出错：通过构造函数参数表示不满意的依赖关系索引0的类型为[javax.sql.DataSource]：无法将类型[org.springframework.jdbc.core.JdbcTemplate]的构造函数参数值转换为必需的类型[javax.sql.DataSource]：无法转换类型的值' org.springframework.jdbc.core.JdbcTemplate'到必需的类型'javax.sql.DataSource';嵌套异常是java.lang.IllegalStateException：无法将类型[org.springframework.jdbc.core.JdbcTemplate]的值转换为必需的类型[javax.sql.DataSource]：找不到匹配的编辑器或转换策略

线程“main”中的异常org.springframework.beans.factory.UnsatisfiedDependencyException：在类路径资源[com / query / comman / application-context.xml]中定义名称为'projectdao'的bean时出错：通过构造函数参数表示不满意的依赖关系索引0的类型为[javax.sql.DataSource]：无法将类型[org.springframework.jdbc.core.JdbcTemplate]的构造函数参数值转换为必需的类型[javax.sql.DataSource]：无法转换类型的值' org.springframework.jdbc.core.JdbcTemplate'到必需的类型'javax.sql.DataSource';嵌套异常是java.lang.IllegalStateException：无法将类型[org.springframework.jdbc.core.JdbcTemplate]的值转换为所需类型[javax.sql.DataSource]：org.springframework.beans中找不到匹配的编辑器或转换策略 . or.s.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor上的org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor（ConstructorResolver.java:191）中的factory.support.ConstructorResolver.createArgumentArray（ConstructorResolver.java:670）在Org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance（AbstractAutowireCapableBeanFactory.java:888）的org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean（AbstractAutowireCapableBeanFactory.java:479）org上的AbstractAutowireCapableBeanFactory.java:984） .springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean（AbstractAutowireCapableBeanFactory . java：450）org.springframework.beans.factory.support.AbstractBeanFactory $ 1.getObject（AbstractBeanFactory.java:290）org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton（DefaultSingletonBeanRegistry.java:222）at org . springframework.beans.factory.support.AbstractBeanFactory.doGetBean（AbstractBeanFactory.java:287）位于org.springframework.beans.factory.support的org.springframework.beans.factory.support.AbstractBeanFactory.getBean（AbstractBeanFactory.java:189） . 位于org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization（AbstractApplicationContext.java:871）的orr.springframework.context.support.AbstractApplicationContext.refresh（AbstractApplicationContext.java:423）中的DefaultListableBeanFactory.preInstantiateSingletons（DefaultListableBeanFactory.java:562） .springframework.context.support.ClassPathXmlApplicationContext . （ClassPathXmlApplicationContext.java:139）org.springframework.context.support.ClassPathXmlApplic ationContext . （ClassPathXmlApplicationContext.java:83）at com.query.test.projectTest.main（projectTest.java:11）