teacherupdate.java

这是学生管理网站的java源码,可以管理学生信息

package org.myservlets;

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 org.myJavabeans.DataConnection;
import org.myJavabeans.TeacherBean;

public class teacherUpdate 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 {
		doPost(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 {
		DataConnection d = new DataConnection();
		TeacherBean teacher = new TeacherBean();
		request.setCharacterEncoding("UTF-8");
		String key = request.getParameter("updateteacher");
		if (key.equals("添加")) {
			String t_sex = null;
			String t_school = null;
			String t_id = request.getParameter("t_id");
			String t_name = request.getParameter("t_name");
			String t_password1 = request.getParameter("t_password1");
			String t_password2 = request.getParameter("t_password2");
			if (d.isUseTeacherid(t_id)) {
				request.setAttribute("message", "id号不能重复使用");
				request.setAttribute("jsp", "teacherUpdate.jsp");
				request.getRequestDispatcher("/error.jsp").forward(request,
						response);

			} else {

				String sex = request.getParameter("t_sex");
				String t_class = request.getParameter("t_class");
				int school = Integer.parseInt(request.getParameter("t_school"));
				String t_phone = request.getParameter("t_phone");
				String t_text = request.getParameter("t_text");
				String t_address = request.getParameter("t_address");
				if (sex.equals("man")) {
					t_sex = "男";
				} else {
					t_sex = "女";
				}
				switch (school) {
				case 1:
					t_school = "大专";
					break;
				case 2:
					t_school = "本科";
					break;
				case 3:
					t_school = "硕士";
					break;
				case 4:
					t_school = "博士";
					break;
				}
				if (t_password1.equals(t_password2)) {
					boolean b = d.InsertTeacher(t_name, t_id, t_password1,
							t_sex, t_school, t_class, t_phone, t_address,
							t_text);
					if (b == true) {
						request.setAttribute("message", "添加成功");
						request.getRequestDispatcher("/admin.jsp").forward(
								request, response);
					}
				} else {
					request.setAttribute("jsp", "teacherUpdate.jsp");
					request.setAttribute("message", "两次输入的密码不一致！");
					request.getRequestDispatcher("/error.jsp").forward(request,
							response);
				}
			}
		} else if (key.equals("删除")) {
			String t_id = request.getParameter("t_id");
			teacher = d.returnTeacherAll(t_id);
			if (teacher == null) {
				request.setAttribute("jsp", "teacherUpdate.jsp");
				request.setAttribute("message", "没有找到此教师信息！");
				request.getRequestDispatcher("/error.jsp").forward(request,
						response);
			} else {
			boolean b = d.deleteTeacher(t_id);
			if (b == true) {
				request.setAttribute("message", "删除成功");
				request.getRequestDispatcher("/admin.jsp").forward(request,
						response);
			}
			}
		} else if (key.equals("修改")) {
			String t_id = request.getParameter("t_id");
			teacher = d.returnTeacherAll(t_id);
			if (teacher == null) {
				request.setAttribute("jsp", "teacherUpdate.jsp");
				request.setAttribute("message", "没有找到此教师信息！");
				request.getRequestDispatcher("/error.jsp").forward(request,
						response);
			} else {
				request.setAttribute("teacher", teacher);
				request.getRequestDispatcher("/teacherselfUpdate.jsp").forward(
						request, response);
			}
		} else {
			request.setAttribute("jsp", "teacherUpdate.jsp");
			request.setAttribute("message", "不成功");
			request.getRequestDispatcher("/error.jsp").forward(request,
					response);

		}

	}
}