java - Spring Component 扫描 jar 中的类？

Question

我们可以将带有 Spring Bean 注解的类生成为 jar 文件吗？
如何从那个 jar 的类中注入(inject)另一个 Spring Bean？
你能提供可能的方法吗？当我得到如下它不起作用？

在 Jar 文件中

    package org.java.support;

    @Service("CommonService")
    public class CommonService {
    }

在项目中

    package com.java.test.app;

    @Service(value = "OtherService")
    public class OtherService {
        @Resource(name = "CommonService")
        private CommonService service;
    }       

在配置中

    <context:component-scan base-package="com.java.test.app, org.java.support">
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Repository"/>
    </context:component-scan>

我收到以下错误；

13:32:12,331 DEBUG [org.springframework.context.annotation.AnnotationConfigApplicationContext] Unable to locate LifecycleProcessor with name 'lifecycleProcessor': using default [or
g.springframework.context.support.DefaultLifecycleProcessor@32dcb03b]
13:32:12,331 DEBUG [org.springframework.beans.factory.support.DefaultListableBeanFactory] Returning cached instance of singleton bean 'lifecycleProcessor'
Exception in thread "main" org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'CommonService' is defined
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanDefinition(DefaultListableBeanFactory.java:529)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedLocalBeanDefinition(AbstractBeanFactory.java:1095)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:277)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
    at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1093)
    at org.ace.java.support.delete.Test.main(Test.java:18)

Answer 1

如果您从 Eclipse 生成 Jar，请在导出对话框中确保选中“添加目录条目”复选框(在选项下)。