在另一个xml文件中声明的引用bean

Question

我正在编写一个包含以下文件的简单弹簧程序。

BeanRef.xml

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">

   <bean id="refbean" class="com.springstarter.RefBean">
       <property name="anotherBean" >
       <ref bean="anotherbean"/>
       </property>
   </bean>
</beans>

AnotherXml.xml

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">

   <bean id="anotherbean" class="com.springstarter.AnotherBean">
       <property name="message" value="Hello World!"/>
   </bean>
</beans>

RefBean.java

public class RefBean
{
    private AnotherBean anotherBean;

    public AnotherBean getAnotherBean()
    {
        return anotherBean;
    }

    public void setAnotherBean( AnotherBean anotherBean )
    {
        this.anotherBean = anotherBean;
    }
}

AnotherBean.java

public class AnotherBean
{
    private String message;

    public String getMessage()
    {
        return message;
    }

    public void setMessage( String message )
    {
        this.message = message;
    }
}

主程序

public class BeanRefApp
{
    public static void main( String[] args )
    {
        @SuppressWarnings( "resource" )
        ApplicationContext context = new ClassPathXmlApplicationContext("BeanRef.xml");
        RefBean starter = ( RefBean ) context.getBean( "refbean" );
        System.out.println(starter.getAnotherBean().getMessage());
    }
}

包结构：

正如您在BeanRef.xml中看到的那样，我试图引用AnotherXml.xml.On中声明的另一个bean，它会抛出此异常，

Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'anotherbean' is defined
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanDefinition(DefaultListableBeanFactory.java:698)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedLocalBeanDefinition(AbstractBeanFactory.java:1175)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:284)

我认为需要将一些包含代码添加到BeanRef.xml以引用AnotherXml.xml。请帮助我。

Answer 1

在BeanRef.xml中，导入beans标记中的其他xml，如：

<import resource="classpath:AnotherXml.xml"/><!-- Assuming AnotherXml.xml is in your classpath as well-->

Answer 2

请你试试这个

<import resource="classpath:config/spring/that-other-xml-conf.xml"/>
    <bean id="yourCoolBean" class="org.jdong.MyCoolBean">
        <property name="anotherBean" ref="thatOtherBean"/>
    </bean>

请找到相同的参考链接： how to reference a bean of another xml file in spring