关于期末考试模拟题的考前自习成果
十四周Java课上通过自习学习了解关于用户权限的不同来登录不同的界面，拥有不同的权限
在建表的过程中除了建立了各个用户名和密码，并且设置了0和1的权限，0来代表管理员，1来代表普通用户，
package controller;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import service.UserService;
import service.UserServiceImpl;
/**
* Servlet implementation class LoginServlet
*/
@WebServlet("/LoginServlet")
public class LoginServlet extends HttpServlet {
UserService userService = new UserServiceImpl();
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public LoginServlet() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
response.getWriter().append("Served at: ").append(request.getContextPath());
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
request.setCharacterEncoding("utf-8");
String userName = request.getParameter("userName");
String uesrPwd = request.getParameter("userPwd");
int k = userService.judgeLogin(userName,uesrPwd);
if(k > 0) {
request.getRequestDispatcher("success.jsp").forward(request, response);
}else {
request.getRequestDispatcher("login.jsp").forward(request, response);
}
}
}
但是仍然还是有一些bug经常跳转失败，正在寻找中，或者有可能无法添加到数据库
package controller;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import service.UserService;
import service.UserServiceImpl;
/**
* Servlet implementation class RegisterServlet
*/
@WebServlet("/RegisterServlet")
public class RegisterServlet extends HttpServlet {
UserService userService = new UserServiceImpl();
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public RegisterServlet() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
response.getWriter().append("Served at: ").append(request.getContextPath());
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
request.setCharacterEncoding("utf-8");
String userName = request.getParameter("userName");
String userPwd = request.getParameter("userPwd");
String userRePwd = request.getParameter("userRePwd");
int k = userService.insertUser(userName,userPwd,userRePwd);
if(k > 0) {
request.getRequestDispatcher("login.jsp").forward(request, response);
}else {
request.getRequestDispatcher("register.jsp").forward(request, response);
}
}
}
login
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>登录页面</title>
</head>
<body>
<br><br><br>
<h3 align = "center">登录页面</h3>
<hr>
<form align = "center" action="LoginServlet" method="post">
<table align = "center" border="0">
<tr><td>用户名</td><td><input type="text" name="userName" ></td></tr>
<tr><td>密码</td><td><input type="password" name="userPwd" ></td></tr>
<tr>
<td align = "center"><input type="submit" value = "登录" style="color:blue" ></td>
<td align = "right"><a href="register.jsp" style="color:blue" >注册</a></td>
</tr>
</table>
</form>
</body>
</html>
success
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
欢迎您，登陆成功
请选择路径
<br>
<td align = "center"><a href="register.jsp" style="color:blue" >注册</a></td>
</br>
</body>
</html>
register
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>注册页面</title>
</head>
<body>
<br><br><br>
<h3 align = "center">注册页面</h3>
<hr>
<form align = "center" action="RegisterServlet" method="post">
<table align = "center" border="0">
<tr><td>用户名</td><td><input type="text" name="userName" ></td></tr>
<tr><td>密码</td><td><input type="password" name="userPwd" ></td></tr>
<tr><td>确认密码</td><td><input type="password" name="userRePwd" ></td></tr>
<tr><td align = "center" colspan="2"><input type="submit" value = "注册" style="color:blue" ></td></tr>
</table>
</form>
</body>
</html>
