jsp_project_/store/src/LoginServlet

来源：互联网发布：人工少女3人物数据编辑：程序博客网时间：2024/06/07 03:36

import java.io.IOException;
import java.io.PrintWriter;
import java.util.*;
import conn.*;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

public class LoginServlet extends HttpServlet {

/**
*
*/
private static final long serialVersionUID = 1L;

/**
* Constructor of the object.
*/
public LoginServlet() {
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 {

  response.setContentType("text/html");
  PrintWriter out = response.getWriter();
  out
    .println("<!DOCTYPE HTML PUBLIC /"-//W3C//DTD HTML 4.01 Transitional//EN/">");
  out.println("<HTML>");
  out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>");
  out.println(" <BODY>");
  out.print("    This is ");
  out.print(this.getClass());
  out.println(", using the GET method");
  out.println(" </BODY>");
  out.println("</HTML>");
  out.flush();
  out.close();
}

/**
* 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 String getToday()
{
  Calendar today = Calendar.getInstance();
  int year = today.get(Calendar.YEAR);
  int month = today.get(Calendar.MONTH)+1;
  int day = today.get(Calendar.DAY_OF_MONTH);
  return year+"年"+month+"月"+day+"日";
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
   throws ServletException, IOException {

  response.setContentType("text/html;charset=UTF-8");
  PrintWriter out = response.getWriter();
  //request.setCharacterEncoding("UTF-8");
  response.setCharacterEncoding("UTF-8");
  String name = request.getParameter("UserName");
  String pass = request.getParameter("PassWord");
  HttpSession session = request.getSession();

  String temp = new String(name.getBytes("ISO-8859-1"),"UTF-8");
  name = temp;

  session.setAttribute("date",getToday());
  session.setAttribute("UserName",name);

  ConnectionDatabase conn = new ConnectionDatabase();
  boolean bool = conn.isNull("SELECT * FROM UserInfo where UName = '"+name+"' And UPass='"+pass+"'");
  if(bool)
  {
   //response.sendRedirect("MyStore.jsp");
   request.getRequestDispatcher("/MyStore.jsp").forward(request,response);
  }else
  {
   //response.sendRedirect("LoginFail.jsp");
   request.getRequestDispatcher("/LoginFail.jsp").forward(request,response);
  }
  out.println(" </BODY>");
  out.println("</HTML>");
  out.flush();
  out.close();
}

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

}