myeclipse 6.5 學習实践過程中，fireFox总是提示如下内容，
type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: javax.servlet.ServletException: javax.servlet.jsp.JspException: Cannot retrieve definition for form. bean saveProductForm. on action saveProduct
    org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:500)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:410)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

root cause

javax.servlet.ServletException: javax.servlet.jsp.JspException: Cannot retrieve definition for form. bean saveProductForm. on action saveProduct
    org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:865)
    org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:794)
    org.apache.jsp.mystruts.newProduct_jsp._jspService(newProduct_jsp.java:93)


主要错误内容：
Cannot retrieve definition for form. bean saveProductForm. on action saveProduct
，实例在网络中找到，一字不改照做，然而不知道错误在哪里，
今天总算找到了，原来在struts-config.xml 配置文件中单词写错了， 例如： 将“saveProductForm”写成“ saveProdustForm” ， "C"写成“S"已经过次检查都没发现。粗心呀。