calcaction.java

使用myeclipse开发的有加、减、乘、除功能的B/S模式的计算器

/*
 * Generated by MyEclipse Struts
 * Template path: templates/java/JavaClass.vtl
 */
package struts.action;

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 org.apache.struts.action.ActionMessage;
import org.apache.struts.action.ActionMessages;
import org.apache.struts.actions.DispatchAction;

import biz.Calculator;

import struts.form.AddForm;

public class CalcAction extends DispatchAction {
	private Calculator biz=new Calculator();
	public ActionForward doAdd(ActionMapping mapping,ActionForm form,HttpServletRequest request,HttpServletResponse response){
		AddForm myform=(AddForm)form;
		double model=biz.add(myform.getNum1(), myform.getNum2());
		request.setAttribute("result", model);
		return mapping.findForward("result");
	}
	public ActionForward doSubtract(ActionMapping mapping,ActionForm form,HttpServletRequest request,HttpServletResponse response){
		AddForm myform=(AddForm)form;
		double model=biz.subtract(myform.getNum1(), myform.getNum2());
		request.setAttribute("result", model);
		return mapping.findForward("result");
	}
	public ActionForward doMultiply(ActionMapping mapping,ActionForm form,HttpServletRequest request,HttpServletResponse response){
		AddForm myform=(AddForm)form;
		double model=biz.multiply(myform.getNum1(), myform.getNum2());
		request.setAttribute("result", model);
		return mapping.findForward("result");
	}
	public ActionForward doDivide(ActionMapping mapping,ActionForm form,HttpServletRequest request,HttpServletResponse response){
		ActionMessages errors=new ActionMessages();
		AddForm myform=(AddForm)form;
		if(myform.getNum2()==0){
			errors.add("error2",new ActionMessage("error.validate.number"));
		}
		if(!errors.isEmpty()){
			super.saveErrors(request, errors);
			return mapping.findForward("index");
		}
		double model=biz.divide(myform.getNum1(), myform.getNum2());
		request.setAttribute("result", model);
		return mapping.findForward("result");
	}
}