Spring mvc 运行Spring MVC Hello World时出现异常示例：org.springframework.beans.factory.CannotLoadBeanClasseException

我尝试在Spring MVC上开始开发，只是一个小项目，但得到以下例外：

找不到在ServletContext资源[/WEB-INF/helloWorld servlet.xml]中定义的名为“/hello.ds”的bean的类[controller.HelloController]；嵌套异常为java.lang.ClassNotFoundException:controller.HelloController

（我的HelloController.java类在src->controller包下）

这是我的index.jsp

<h1>HelloWorld</h1> 
<form action="./hello.ds"> 
Name:<input type="text" name="name"> 
<input type="submit" value="sayHello"> 
</form> 

${msg} 

这是我的成功。jsp

<h1>HelloWorld</h1> 
<form action="./hello.ds"> 
Name:<input type="text" name="name"> 
<input type="submit" value="sayHello"> 
</form> 

${msg} 

jars补充道：

com.springsource.org.apache.commons.logging-1.1.1 
com.springsource.org.apache.log4j-1.2.15 
jmxtools-1.2.1 
org.springframework.asm-3.0.1.RELEASE-A 
org.springframework.beans-3.0.1.RELEASE-A 
org.springframework.context-3.0.1.RELEASE-A 
org.springframework.core-3.0.1.RELEASE-A 
org.springframework.expression-3.0.1.RELEASE-A 
org.springframework.web-3.0.1.RELEASE-A 
org.springframework.web.servlet-3.0.1.RELEASE-A 

com.springsource.org.apache.commons.logging-1.1.1 
com.springsource.org.apache.log4j-1.2.15 
jmxtools-1.2.1 
org.springframework.asm-3.0.1.RELEASE-A 
org.springframework.beans-3.0.1.RELEASE-A 
org.springframework.context-3.0.1.RELEASE-A 
org.springframework.core-3.0.1.RELEASE-A 
org.springframework.expression-3.0.1.RELEASE-A 
org.springframework.web-3.0.1.RELEASE-A 
org.springframework.web.servlet-3.0.1.RELEASE-A