calcaction.java

计算器源代码！！功能基本实现

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

import java.util.HashMap;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionErrors;
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.LookupDispatchAction;

import com.important.struts.form.CalcForm;

/** 
 * MyEclipse Struts
 * Creation date: 04-12-2008
 * 
 * XDoclet definition:
 * @struts.action path="/calc" name="calcForm" input="/form/calc.jsp" scope="request" validate="true"
 */
public class CalcAction extends Action {
	/*
	 * Generated Methods
	 */

	/** 
	 * Method execute
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	
	
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		try{
			request.setCharacterEncoding("GB2312");
			response.setCharacterEncoding("GB2312");
		}catch(Exception e){e.printStackTrace();}
		
		
		CalcForm calcForm = (CalcForm) form;// TODO Auto-generated method stub
		com.important.Calc calc=new com.important.Calc();
		
		System.out.println(calcForm.getV1());
		System.out.println(calcForm.getV2());
		System.out.println(calcForm.getType());
		
		int v1,v2,type;
		
		try{
			v1=Integer.parseInt(calcForm.getV1());
			v2=Integer.parseInt(calcForm.getV2());
			type=Integer.parseInt(calcForm.getType());
		}catch(Exception e){
				ActionErrors errors = new ActionErrors();
				//ActionMessages messages=new ActionMessages();
				  ActionMessage error = new ActionMessage("error.wrong");
				     errors.add("v",error);
				    // messages.add("v",error);
				     //saveErrors(request,messages);
				     saveErrors(request,errors);
				     
			  return mapping.findForward("index");
		}
		
		
		
		if(type==1){
			calcForm.setResult(calc.add(v1, v2));
		}else if(type==2){
			calcForm.setResult(calc.sub(v1, v2));
		}else if(type==3){
			calcForm.setResult(calc.multiply(v1, v2));
		}else if(type==4){
			if(v2==0){
				ActionErrors errors = new ActionErrors();
				  ActionMessage error = new ActionMessage("error.fatal");
				     errors.add("fatal",error);
				     saveErrors(request,errors);
				     return mapping.findForward("index");
				
			}else{
				calcForm.setResult(calc.divide(v1, v2));
			}
		}
		return mapping.findForward("result");
	}
}