Struts框架做的加法-Eclipse.

package com.yourcompany.biz; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.struts.action.Action; import org.apache.struts.action.ActionForm; import org.apache.struts.action.ActionForward; import org.apache.struts.action.ActionMapping; import com.yourcompany.model.AddForm; public class AddAction extends Action { public AddAction() { } public ActionForward execute(ActionMapping mapping,ActionForm form,HttpServletRequest request,HttpServletResponse respnse){ ActionForward af=null; try{ Calculator cal=new Calculator(); AddForm addForm=(AddForm)form; double result=cal.getAdd(addForm.getNum1(), addForm.getNum2()); request.setAttribute("result", result); af=mapping.findForward("result"); } catch (Exception e){ e.printStackTrace(); } return af; } }