XmlWebApplicationContext实例化成功，但是调用失败

2019独角兽企业重金招聘Python工程师标准>>>

web.xml

  <context-param>

         <param-name>contextConfigLocation</param-name>

<param-value>classpath:applicationContext.xml</param-value>

</context-param>

<listener>

<listener-class>

org.springframework.web.context.ContextLoaderListener

</listener-class>

</listener>

applicationContext.xml

<context:annotation-config/>

<bean id="WcgTransactionLogin"

class="com.mposa.channel.wcg.WcgTransactionLogin">

</bean>

<bean id="WcgTransactionOther"

class="com.mposa.channel.wcg.WcgTransactionOther">

</bean>

<!-- 交易列表 -->

<bean id="TestSpring"

class="com.mposa.action.TestSpring">

<property name="tran">

<list>

<ref bean="WcgTransactionLogin"></ref>

<ref bean="WcgTransactionOther"></ref>

</list>

</property>

</bean>

在tomcat启动的时候，已经出现这样的日志了：

[13:52:37|DEBUG|(org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor)]=[Autowiring by type from bean name 'TestSpring' to bean named 'WcgTransactionLogin']

[13:52:37|DEBUG|(org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor)]=[Autowiring by type from bean name 'TestSpring' to bean named 'WcgTransactionOther']

[13:52:37|DEBUG|(org.springframework.beans.factory.support.DefaultListableBeanFactory)]=[Returning cached instance of singleton bean 'WcgTransactionLogin']

[13:52:37|DEBUG|(org.springframework.beans.factory.support.DefaultListableBeanFactory)]=[Returning cached instance of singleton bean 'WcgTransactionOther']

[13:52:37|DEBUG|(org.springframework.beans.factory.support.DefaultListableBeanFactory)]=[Finished creating instance of bean 'TestSpring']

我基本认为这个已经注入成功了。

但是在实际运行的时候，这个变量却是null。

但是，我如果在TestSpring里面直接使用main函数进行调用：

public class TestSpring {

@Autowired

private List<Transaction> tran = new ArrayList<Transaction> ();

public void show(){

System.out.println("trans:"+tran.size());

}

public List<Transaction> getTran() {

return tran;

}

public void setTran(List<Transaction> tran) {

this.tran = tran;

}

/**

* @param args

*/

public static void main(String[] args) {

// TODO Auto-generated method stub

ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");

TestSpring test = (TestSpring) ac.getBean("TestSpring");

test.show();

 

}

}

直接执行，是ok的。

不知道为啥，在此标记，等有时间再查明，如果有大神了解，请告知，非常感谢。

转载于:https://my.oschina.net/longtsiu/blog/613341