failed to load applicationContext

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用spring4做个单元测试，报failed to load applicationContext

代码如下：

1.接口

package com.springinaction.test;public interface CompactDisc {public void play();}

2.实现类

package com.springinaction.test;import org.springframework.stereotype.Component;@Componentpublic class SgtPeppers implements CompactDisc{private String title = "Sgt. Pepper's Linel Hearts Cloub Band";private String artist = "The Beatles";@Overridepublic void play() {System.out.println("Playing " + title + " by " + artist);}}

3.配置类（注解组件扫描）：@ComponentScan注解，这个注解能够在Spring中启动组件扫描，默认会扫描与配置类相同的包

package com.springinaction.test;import org.springframework.context.annotation.ComponentScan;import org.springframework.context.annotation.Configuration;@Configuration@ComponentScanpublic class CDPlayerConfig {}

4.测试类

package com.springinaction.test;import static org.junit.Assert.*;import org.junit.Test;import org.junit.runner.RunWith;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.test.context.ContextConfiguration;import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;@RunWith(SpringJUnit4ClassRunner.class)@ContextConfiguration(classes=CDPlayerConfig.class)//@ContextConfiguration(locations={"classpath:NewFile.xml"})这里是xml启动组件扫描，因为我们用的是注解扫描，所以注释public class CDPlayerTest {@Autowiredprivate CompactDisc cd;@Testpublic void cdShouldNotbeNull(){assertNotNull(cd);}}

原因是缺少Spring的jar包，在http://repo.spring.io/release/org/springframework/spring

中下载了spring-framework-4.2.0.RELEASE-dist.zip，解压完后把包都导了进入，就ok了

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