<dependency> <groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.7</version>
 <!-- 作用域范围为test -->
 <scope>test</scope> </dependency>

将<scope>test</scope>注释掉即可

如下：

<dependency>
   <groupId>junit</groupId>
   <artifactId>junit</artifactId>
   <version>4.7</version>
</dependency>

原因：scope的作用范围问题，注释掉即可