updatecourseaction.java

来自「为基于J2EE（Java2 Platform」· Java 代码 · 共 71 行

//Created by MyEclipse Struts
// XSL source (default): platform:/plugin/com.genuitec.eclipse.cross.easystruts.eclipse_4.0.1/xslt/JavaClass.xsl

package com.huang.actions;

import java.util.ArrayList;
import java.util.HashMap;

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.huang.common.DB.DBtool;
import com.huang.forms.UpdateCourseForm;

public class UpdateCourseAction extends Action {


	public ActionForward execute(
		ActionMapping mapping,
		ActionForm form,
		HttpServletRequest request,
		HttpServletResponse response) {
		UpdateCourseForm updateCourseForm = (UpdateCourseForm) form;
		// TODO Auto-generated method stub
		
		String index = (String)request.getParameter("index");
		
		if(index.equals("first")) {
			
			String course_id = (String)request.getParameter("id");
			
			ArrayList list = DBtool.getDataList("tb_course",new String[]{"course_name","course_credit","teacher_id"},"course_id='"+course_id+"'");
			String course_name = ((HashMap)list.get(0)).get("course_name").toString();
			String course_credit = ((HashMap)list.get(0)).get("course_credit").toString();
			String teacher_id = ((HashMap)list.get(0)).get("teacher_id").toString();
			
			request.setAttribute("course_name",course_name);
			request.setAttribute("course_id",course_id);
			request.setAttribute("course_credit",course_credit);
			request.setAttribute("teacher_id",teacher_id);
			
			ArrayList list2 = DBtool.getDataList("tb_teacher",new String[]{"teacher_id","teacher_name"});
			request.setAttribute("teacher",list2);
			return mapping.findForward("first");
			
			
			
		}
		
		if(index.equals("update")) {
			String course_id = (String)request.getParameter("id");
			String course_credit = updateCourseForm.getCourse_credit();
			String course_name = updateCourseForm.getCourse_name();
			String teacher_id = updateCourseForm.getTeacher_id();
			
			String sql = "update tb_course set course_name = '"+course_name+"' , course_credit = '"+course_credit+"',teacher_id='"+teacher_id+"' where course_id = '"+course_id+"'";
			
			DBtool.updateData(sql);
			return mapping.findForward("success");
		}
		return null;
	}

}