checkaction.java

来自「郭克华j2ee高级框架实战教学视频源代码 这个是比较值得一看的 由郭克华博士」· Java 代码 · 共 40 行

/*
 * Generated by MyEclipse Struts
 * Template path: templates/java/JavaClass.vtl
 */
package prj29_1.action;

import java.io.PrintWriter;

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;

public class CheckAction extends Action {

	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		
		String stuId = request.getParameter("stuId");
		StudentDao sdao = new StudentDao();
		String stuName = sdao.getNameById(stuId);
		response.setCharacterEncoding("gb2312");
		PrintWriter out = null;
		try{
			out = response.getWriter();		
		}catch(Exception ex){}
		if(stuName==null){
			out.print("该学号没有被注册，您可以注册");
		}
		else{
			out.print("对不起，您不能重复注册!!");
		}
		
		return null;
	}
}