setclassinfo.java

中学教学管理系统

package servlets;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.Statement;

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 utility.DBConnection;

public class SetClassInfo extends HttpServlet {

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

	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		HttpSession session = request.getSession();
		
		
		//设定编码类型，避免传递中文参数出现乱码
		request.setCharacterEncoding("gb2312");
		
		String classNo = request.getParameter("classNumber");
		String teacherNo = request.getParameter("teacherNumber");
		String classRoomNo = request.getParameter("classRoomNumber");
		String studentNo = request.getParameter("studentNumber");
		String enrollTime = request.getParameter("enrollTime");
		
		if(classNo==null || teacherNo==null || classRoomNo==null || 
				studentNo==null || enrollTime == null || classNo.equals("") 
				|| teacherNo.equals("") || classRoomNo.equals("")|| studentNo.equals("")
				|| enrollTime.equals(""))
		{
			response.sendRedirect("/TeacherManager/manageClassSetting/set_class_information.jsp?suc=false");
			return;
		}
		
		
		//数据库
		
		Connection con;
		
		
		try{
			con = DBConnection.getConnection();
			Statement st = con.createStatement();
			
			String insert = "insert into class values('"+classNo+"','"+classRoomNo+"','"+teacherNo+"','"+studentNo+"','"+enrollTime+"')";
			System.out.println(insert);
			int n = st.executeUpdate(insert);
			if(n != 1)
			{
				con.close();
				response.sendRedirect("/TeacherManager/manageClassSetting/set_class_information.jsp?suc=false");
				return;
			}
			con.close();
			
		}catch(Exception e)
		{
			e.printStackTrace();
			response.sendRedirect("/TeacherManager/manageClassSetting/set_class_information.jsp?suc=false");
			return;
		}
		
		response.sendRedirect("/TeacherManager/manageClassSetting/set_class_information.jsp?suc=true");
		return;
	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		doGet(request, response);
	}

	public void init() throws ServletException {
		// Put your code here
	}

}