Question

我配置了以下PropertyPlaceholderConfigurer

<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="location" value="file:///opt/myproject/jndi.properties" />
</bean>

我的JNDI模板bean看起来像

<bean id="myJndiTemplate" class="org.springframework.jndi.JndiTemplate">
    <property name="environment">
        <props>
            <prop key="java.naming.factory.initial">${factory}</prop>
            <prop key="java.naming.provider.url">${url}</prop>
        <props>
    </property>
</bean>

jndi.properties文件定义了两个键。

factory=org.webmethods.jms.naming.WmJmsNamingCtxFactory
url=wmjmsnaming://MY_BROKER@abc.com:7001

当我在weblogic上部署它并启动应用程序时，我看到以下跟踪

nested exception is javax.naming.NoInitialContextException: Cannot instantiate class: ${factory} [Root exception is java.lang.ClassNotFoundExcep
tion: ${factory}]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:529)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458)
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:296)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:293)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:628)
        at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932)
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479)
        at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:389)
        at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:294)
        at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:112)
        at weblogic.servlet.internal.EventsManager$FireContextListenerAction.run(EventsManager.java:481)
        at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
        at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)
        at weblogic.servlet.internal.EventsManager.notifyContextCreatedEvent(EventsManager.java:181)
        at weblogic.servlet.internal.WebAppServletContext.preloadResources(WebAppServletContext.java:1868)
        at weblogic.servlet.internal.WebAppServletContext.start(WebAppServletContext.java:3154)
        at weblogic.servlet.internal.WebAppModule.startContexts(WebAppModule.java:1518)
        at weblogic.servlet.internal.WebAppModule.start(WebAppModule.java:484)

Spring并没有用属性文件中的值替换$ {factory}，而是将$ {factory}视为值，因此显示了一个未找到类的异常。如果我硬编码工厂类名称和网址，它工作正常。我不知道这里遗漏了什么，因为我无法弄清楚这是什么问题。

感谢任何帮助或指示。

Answer 1

我发现了另一种更简单的方法，它不需要额外的课程。我使用org.springframework.beans.factory.config.PropertiesFactoryBean加载jndi.properties

jndiTemplate bean看起来像这样。

<bean id="myJndiTemplate" class="org.springframework.jndi.JndiTemplate">
    <property name="environment">
        <bean class="org.springframework.beans.factory.config.PropertiesFactoryBean">
             <property name="location" value="file:///opt/myproject/jndi.properties" />
        </bean>
    </property>
</bean>

Answer 2

您也可以像这样使用弹簧PropertiesFactoryBean

<bean class="org.springframework.beans.factory.config.PropertiesFactoryBean">
    <property name="location" value="file:///opt/myproject/jndi.properties" />
</bean>

Answer 3

我设法找到一个适合我的解决方案。创建了我自己的JndiTemplate并从服务器显式读取jndi.properties文件。自定义类看起来像这样

public class MyJndiTemplate extends JndiTemplate {

    @Override
    protected Context createInitialContext() throws NamingException {
        Properties jndiProperties =  new Properties();
        final File file = new File("/opt/myproject/jndi.properties");
        try {
            jndiProperties.load(new FileInputStream(file));
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return new InitialContext(jndiProperties);
    }
}

然后在Spring上下文xml中使用此类

<bean id="myJndiTemplate" class="com.MyJndiTemplate">

希望这可以帮助任何面临同样问题的人。

JNDI属性（java.naming.factory.initial＆amp; java.naming.provider.url）未通过Spring的PropertyPlaceholderConfigurer设置

3 个答案: