queryaction.java

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package prj2_1;

import java.util.ArrayList;

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 dao.StudentDao;

//Action:负责接受ActionForm的数据，处理
//1:必须继承org.apache.struts.action.Action
//2:重写execute方法来处理业务逻辑
//3:将这个类在配置文件中注册
public class QueryAction extends Action{

	public QueryAction(){
		System.out.println("QueryAction构造函数");
	}
	//ActionForward:封装了跳转目标的路径
	//mapping:访问配置文件
	//form:传过来的ActionForm对象
	public ActionForward execute(ActionMapping mapping, 
									ActionForm form, 
									HttpServletRequest request, 
									HttpServletResponse response) throws Exception {
		QueryForm queryForm = (QueryForm)form;
		String sname = queryForm.getSname();
		//String sname = request.getParameter("sname");
		sname = new String(sname.getBytes("ISO-8859-1"));
		
		StudentDao studentDao = new StudentDao();
		ArrayList stus = studentDao.queryStuByName(sname);
		
		request.setAttribute("stus", stus);
		
		//跳转
		//ActionForward af = new ActionForward("/queryResult.jsp");
		ActionForward af = mapping.findForward("RESULT");
		return af;
	}
	
}