在 Spring 中访问 MySQL 数据源 bean

Question

我正在尝试从我的 Spring 项目（在 springtoolsuite 中），我想要 访问 MySQL JNDI （由 JBoss 应用程序服务器）。

我的 Bean 声明

<bean id="dataSource" class="org.springframework.jndi.JndiObjectFactoryBean" scope="singleton" >
<property name="jndiName" value="java:/MySqlDS" />
<property name="resourceRef" value="true" />

来自 JBoss 控制台：

java: Namespace
+- MySqlDS (class: org.jboss.resource.adapter.jdbc.WrapperDataSource)

但是，当我运行测试应用程序时，我得到了以下结果。我做错了什么？

    Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in file [/workspace-sts/test1/cspringbean.xml]: Invocation of init method failed; nested exception is javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file:  java.naming.factory.initial
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1401)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:512)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:450)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:290)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:287)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:189)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:540)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:842)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:416)
    at org.springframework.context.support.FileSystemXmlApplicationContext.<init>(FileSystemXmlApplicationContext.java:140)
    at org.springframework.context.support.FileSystemXmlApplicationContext.<init>(FileSystemXmlApplicationContext.java:84)
    at com.don22.EscortIdol.main(EscortIdol.java:13)
Caused by: javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file:  java.naming.factory.initial
    at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:645)
    at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:288)
    at javax.naming.InitialContext.getURLOrDefaultInitCtx(InitialContext.java:325)
    at javax.naming.InitialContext.lookup(InitialContext.java:392)
    at org.springframework.jndi.JndiTemplate$1.doInContext(JndiTemplate.java:154)
    at org.springframework.jndi.JndiTemplate.execute(JndiTemplate.java:87)
    at org.springframework.jndi.JndiTemplate.lookup(JndiTemplate.java:152)
    at org.springframework.jndi.JndiTemplate.lookup(JndiTemplate.java:178)
    at org.springframework.jndi.JndiLocatorSupport.lookup(JndiLocatorSupport.java:95)
    at org.springframework.jndi.JndiObjectLocator.lookup(JndiObjectLocator.java:105)
    at org.springframework.jndi.JndiObjectFactoryBean.lookupWithFallback(JndiObjectFactoryBean.java:201)
    at org.springframework.jndi.JndiObjectFactoryBean.afterPropertiesSet(JndiObjectFactoryBean.java:187)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1460)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1398)
    ... 12 more

Answer 1

我还建议查看 JEE 命名空间，而不是定义工厂 bean

<jee:jndi-lookup id="dataSource" jndi-name="jdbc/MyDataSource"/>

请参阅 http://static.springsource.org/spring/docs/2.5.6/reference/xsd-config.html

Answer 2

javax.naming.NoInitialContextException：
需要指定类名
环境或系统属性，或作为
小程序参数，或在
应用程序资源文件：
java.naming.factory.initial

堆栈跟踪中的这条消息让我相信您没有在 JBoss 中设置 JNDI 数据源池，或者您的 JNDI 名称不正确。检查两者。

更新：您的应用程序如何使用 JBOSS 进行 JNDI 查找？如果您没有部署在应用程序服务器中，那么您应该使用 DriverManagerDataSource，而不是 JNDI 数据源。