headinformation.java

简单的学生管理系统,使用的是SQL2005数据库

package servlet;

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

import javabean.JavaBean;

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

import sql.SQLHeadInformation;

public class HeadInformation extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public HeadInformation() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	/**
	 * 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 {

		HttpSession session = request.getSession();
		//response.setContentType("text/html");
		request.setCharacterEncoding("UTF-8");
		response.setCharacterEncoding("UTF-8");
		PrintWriter out = response.getWriter();
		String id = (String)session.getAttribute("id");
		SQLHeadInformation sqlhead = new SQLHeadInformation();
		JavaBean javainf = sqlhead.methodhead(id);
		String id1 = javainf.getId();
		String name = javainf.getName();
		String property = javainf.getProperty();
		String age = javainf.getAge();
		String gender = javainf.getGender();
		String classs = javainf.getClasss();
		String coursenumber = javainf.getCoursenumber();
		String property1 = javainf.getProperty1();
		request.setAttribute("id", id1);
		request.setAttribute("name", name);
		request.setAttribute("property", property);
		request.setAttribute("age", age);
		request.setAttribute("gender", gender);
		request.setAttribute("classs", classs);
		request.setAttribute("coursenumber", coursenumber);
		if(property1.equals("headteacher"))
		{
		request.getRequestDispatcher("Headteacher/HeadInformation.jsp").forward(request, response);
		}
		else if(property1.equals("teacher"))
		{
		request.getRequestDispatcher("Teacher/TeacherInformation.jsp").forward(request, response);
		}
		else if(property1.equals("student"))
		{
		request.getRequestDispatcher("Student/StuInformation.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 {
        HttpSession session = request.getSession();
		//response.setContentType("text/html");
		PrintWriter out = response.getWriter();
		String id = (String)session.getAttribute("id");
		SQLHeadInformation sqlhead = new SQLHeadInformation();
		sqlhead.methodhead(id);
		response.sendRedirect("HeadInformation.jsp");
		
	}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occure
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}