i have a problem with my project

i have a problem, i generated a build jar of other project, because i want to use its methods, then i imported this library in my project without never problem, well i used a MVC, in the controller´s name is java.java and it is here when i imported the new library and i used, then i run project, this is a error message,

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'urlMap' defined in ServletContext resource [/WEB-INF/springapp-servlet.xml]: Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'welcome' defined in ServletContext resource [/WEB-INF/springapp-servlet.xml]: Cannot resolve reference to bean 'catalogFacadeTarget' while setting bean property 'catalogFacadeImpl'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'catalogFacadeTarget' defined in ServletContext resource [/WEB-INF/springapp-servlet.xml]: Instantiation of bean failed; nested exception is java.lang.NoClassDefFoundError: jxl/read/biff/BiffException Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'welcome' defined in ServletContext resource [/WEB-INF/springapp-servlet.xml]: Cannot resolve reference to bean 'catalogFacadeTarget' while setting bean property 'catalogFacadeImpl'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'catalogFacadeTarget' defined in ServletContext resource [/WEB-INF/springapp开发者_运维知识库-servlet.xml]: Instantiation of bean failed; nested exception is java.lang.NoClassDefFoundError: jxl/read/biff/BiffException Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'catalogFacadeTarget' defined in ServletContext resource [/WEB-INF/springapp-servlet.xml]: Instantiation of bean failed; nested exception is java.lang.NoClassDefFoundError: jxl/read/biff/BiffException Caused by: java.lang.NoClassDefFoundError: jxl/read/biff/BiffException

It says, class jxl.read.biff.BiffException is not found. You need to add the jar file that contains jxl.read.biff.BiffException class to your projects classpath.

You can obtain the jar file from findjar.com