usersclservlet.java

课程管理系统

package cn.rludrea.servlet;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import cn.rludrea.model.*;

public class UsersClServlet extends HttpServlet {

	/**
	 * The doGet method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		response.setContentType("text/html");
		response.setCharacterEncoding("utf-8");
		PrintWriter out = response.getWriter();
		//这是一个关于用户管理的控制器；
		String type=request.getParameter("type");
		UserBO ub=new UserBO();
		if(type.equals("stuDel"))
		{
			String stuId=request.getParameter("stuId");
			if(ub.delByStuId(stuId))
			{
				request.getRequestDispatcher("UsersShow.jsp").forward(request, response);
			}else
			{
				request.getRequestDispatcher("UsersShow.jsp").forward(request, response);
			}
		}
		else if(type.equals("teaDel"))
		{
			String teaId=request.getParameter("teaId");
			if(ub.delByTeaId(teaId))
			{
				request.getRequestDispatcher("UsersShow.jsp").forward(request, response);
			}
			else
			{
				request.getRequestDispatcher("UsersShow.jsp").forward(request, response);
			}
		}
		//管理员添加新的学生用户；
		else if(type.equals("addStu"))
		{
			String stuName=request.getParameter("stuName");
			String stuPwd=request.getParameter("stuPwd");
			String courseId=request.getParameter("courseId");
			if(ub.addStu(stuName, stuPwd, courseId))
			{
				request.getRequestDispatcher("UsersShow.jsp").forward(request, response);
			}
			else
			{
				request.getRequestDispatcher("stuAdd.jsp").forward(request, response);
			}
		}
		//管理员对学生的修改；
		else if(type.equals("updStu"))
		{
			String stuName=request.getParameter("stuName");
			String stuPwd=request.getParameter("stuPwd");
			String courseId=request.getParameter("courseId");
			String stuId=request.getParameter("stuId");
			if(ub.updateStu(stuName, stuPwd, courseId, stuId))
			{
				request.getRequestDispatcher("UsersShow.jsp").forward(request, response);
			}
			else
			{
				request.getRequestDispatcher("stuUpdate.jsp").forward(request, response);
			}
		}
		//修改前把数据显示出来
		else if(type.equals("updStuCha"))
		{
			String stuId=request.getParameter("stuId");
			studentBean sb=new studentBean();
			UserBO ubo=new UserBO();
			sb=ubo.getStuBean(stuId);
			request.setAttribute("sb", sb);
			request.getRequestDispatcher("stuUpdate.jsp").forward(request, response);
		}
		//修改前把数据显示出来
		else if(type.equals("updTeaCha"))
		{
			String teaId=request.getParameter("teaId");
			teacherBean tb=new teacherBean();
			UserBO ubo=new UserBO();
			tb=ubo.getTeaBean(teaId);
			request.setAttribute("tb", tb);
			request.getRequestDispatcher("teaUpdate.jsp").forward(request, response);
		}
		//管理员添加新的指导老师；
		else if(type.equals("addTea"))
		{
			String teaName=request.getParameter("teaName");
			String teaPwd=request.getParameter("teaPwd");
			String courseId=request.getParameter("courseId");
			if(ub.addTea(teaName, teaPwd, courseId))
			{
				request.getRequestDispatcher("UsersShow.jsp").forward(request, response);
			}
			else
			{
				request.getRequestDispatcher("teaAdd.jsp").forward(request, response);
			}
		}
		//管理员对指导老师的信息进得修改；
		else if(type.equals("updTea"))
		{
			String teaName=request.getParameter("teaName");
			String teaPwd=request.getParameter("teaPwd");
			String courseId=request.getParameter("courseId");
			String teaId=request.getParameter("teaId");
			if(ub.updateTea(teaName, teaPwd, courseId, teaId))
			{
				request.getRequestDispatcher("UsersShow.jsp").forward(request, response);
			}
			else
			{
				request.getRequestDispatcher("teaUpdate.jsp").forward(request, response);
			}
		}
		//判断分页；
		else if(type.equals("divideStu"))
		{
			String pageNow=request.getParameter("pageNow");
			request.setAttribute("stuPageNow", pageNow);
			request.getRequestDispatcher("UsersShow.jsp").forward(request, response);
		}
		else if(type.equals("divideTea"))
		{
			String pageNow=request.getParameter("pageNow");
			request.setAttribute("teaPageNow", pageNow);
			request.getRequestDispatcher("UsersShow.jsp").forward(request, response);
		}
	}

	/**
	 * The doPost method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to post.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		this.doGet(request, response);
	}

}