第13次

package com.nn.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.SQLException;

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 com.nn.Dao.usersDao;

public class Login extends HttpServlet {

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

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 {

request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("utf-8");
HttpSession session=request.getSession();
String uname = request.getParameter("uname");
String upwd =request.getParameter("upwd");

usersDao usersDao=new usersDao();
try {
if(usersDao.login(uname, upwd)){
session.setAttribute("uname", uname);
request.getRequestDispatcher("zhuye.jsp").forward(request, response);
}
else{

response.setHeader("refresh", "5;url=login.jsp");
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

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

}

 

 

 

 

 

package com.nn.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.SQLException;

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

import com.nn.Dao.usersDao;

public class Reg extends HttpServlet {

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

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 {

response.setContentType("text/html");
PrintWriter out = response.getWriter();
request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("utf-8");
String uid=request.getParameter("id");
Integer id=Integer.parseInt(uid);
String uname=request.getParameter("uname");
String upwd =request.getParameter("upwd");
String upwd2 =request.getParameter("upwd2");
usersDao usersDao=new usersDao();
if(upwd.equals(upwd2)){
try {
if(usersDao.id(id)){
out.print("已经有这个id了，即将跳回注册页.....");
response.setHeader("refresh", "5;url=zhuce.jsp");
}
else{
usersDao.zhuce(id, uname, upwd);
out.print("注册成功，即将跳回登录页.....");
response.setHeader("refresh", "5;url=login.jsp");
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
else{
out.print("两次密码不一致，即将跳回注册页.....");
response.setHeader("refresh", "5;url=zhuce.jsp");
}
out.close();
}

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

}