Handler processing failed; nested exception is java.lang.NoClassDefFoundError

​​编辑

​在使用阿里云发送短信接口时出现此错误，原因是springmvcjar包和阿里云jar包出现冲突，建议使用下面两个版本

<aliyun-core.version>4.0.3</aliyun-core.version>

<spring.version>4.3.0.RELEASE</spring.version>

<dependency>

　　<groupId>com.aliyun</groupId>

　　<artifactId>aliyun-java-sdk-core</artifactId>

　　<version>4.0.3</version>

</dependency>