网上书城登陆注册首页代码
时间: 2023-09-14 07:10:56 浏览: 42
抱歉,我无法访问实时的网站登陆注册首页,也无法显示相关代码。但是,一般来说,网站登陆注册首页的代码包含HTML、CSS和JavaScript等技术,可以通过学习相关技术的文档和教程来实现。如果你需要自己开发一个类似的页面,可以研究一下相关技术,并了解一些前端框架,如Bootstrap、Vue、React等,以便更高效地开发页面。
相关问题
基于javaweb的网上书城管理系统登陆、注册首页相关Servlet代码
1. 登陆相关Servlet代码:
```java
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.*;
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 javax.servlet.http.HttpSession;
@WebServlet("/LoginServlet")
public class LoginServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doPost(request, response);
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.setContentType("text/html; charset=UTF-8");
PrintWriter out = response.getWriter();
String username = request.getParameter("username");
String password = request.getParameter("password");
HttpSession session = request.getSession();
Connection conn = null;
PreparedStatement pstmt = null;
ResultSet rs = null;
try {
Class.forName("com.mysql.jdbc.Driver");
conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/bookstore?useSSL=false", "root", "123456");
String sql = "select * from user where username=? and password=?";
pstmt = conn.prepareStatement(sql);
pstmt.setString(1, username);
pstmt.setString(2, password);
rs = pstmt.executeQuery();
if (rs.next()) {
session.setAttribute("username", username);
response.sendRedirect("index.jsp");
} else {
out.println("<script>alert('用户名或密码错误!'); window.location.href='login.jsp'</script>");
}
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
} finally {
try {
if (rs != null) rs.close();
if (pstmt != null) pstmt.close();
if (conn != null) conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
}
```
2. 注册相关Servlet代码:
```java
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.*;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@WebServlet("/RegisterServlet")
public class RegisterServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doPost(request, response);
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.setContentType("text/html; charset=UTF-8");
PrintWriter out = response.getWriter();
String username = request.getParameter("username");
String password = request.getParameter("password");
String repassword = request.getParameter("repassword");
String email = request.getParameter("email");
Connection conn = null;
PreparedStatement pstmt = null;
ResultSet rs = null;
try {
Class.forName("com.mysql.jdbc.Driver");
conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/bookstore?useSSL=false", "root", "123456");
String sql = "select * from user where username=?";
pstmt = conn.prepareStatement(sql);
pstmt.setString(1, username);
rs = pstmt.executeQuery();
if (rs.next()) {
out.println("<script>alert('用户名已存在!'); window.location.href='register.jsp'</script>");
} else {
sql = "insert into user(username, password, email) values(?, ?, ?)";
pstmt = conn.prepareStatement(sql);
pstmt.setString(1, username);
pstmt.setString(2, password);
pstmt.setString(3, email);
pstmt.executeUpdate();
out.println("<script>alert('注册成功!'); window.location.href='login.jsp'</script>");
}
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
} finally {
try {
if (rs != null) rs.close();
if (pstmt != null) pstmt.close();
if (conn != null) conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
}
```
3. 首页相关Servlet代码:
```java
import java.io.IOException;
import java.sql.*;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@WebServlet("/IndexServlet")
public class IndexServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doPost(request, response);
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.setContentType("text/html; charset=UTF-8");
Connection conn = null;
PreparedStatement pstmt = null;
ResultSet rs = null;
try {
Class.forName("com.mysql.jdbc.Driver");
conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/bookstore?useSSL=false", "root", "123456");
String sql = "select * from book";
pstmt = conn.prepareStatement(sql);
rs = pstmt.executeQuery();
List<Book> list = new ArrayList<Book>();
while (rs.next()) {
Book book = new Book();
book.setId(rs.getInt("id"));
book.setName(rs.getString("name"));
book.setAuthor(rs.getString("author"));
book.setPrice(rs.getFloat("price"));
book.setDescription(rs.getString("description"));
book.setCategory(rs.getString("category"));
list.add(book);
}
request.setAttribute("bookList", list);
request.getRequestDispatcher("index.jsp").forward(request, response);
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
} finally {
try {
if (rs != null) rs.close();
if (pstmt != null) pstmt.close();
if (conn != null) conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
}
```
小米商城登录注册代码
小米商城的登录注册代码需要前端和后端配合完成,以下是一个简单的示例:
前端代码:
```
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>小米商城登录注册</title>
</head>
<body>
<h1>小米商城登录注册</h1>
<form action="/login" method="post">
<label for="username">用户名:</label>
<input type="text" id="username" name="username"><br><br>
<label for="password">密码:</label>
<input type="password" id="password" name="password"><br><br>
<input type="submit" value="登录">
</form>
<br><br>
<form action="/register" method="post">
<label for="username">用户名:</label>
<input type="text" id="username" name="username"><br><br>
<label for="password">密码:</label>
<input type="password" id="password" name="password"><br><br>
<input type="submit" value="注册">
</form>
</body>
</html>
```
后端代码(使用Node.js和Express框架):
```
const express = require('express');
const app = express();
app.use(express.urlencoded({ extended: true }));
app.get('/', (req, res) => {
res.sendFile(__dirname + '/index.html');
});
app.post('/login', (req, res) => {
const username = req.body.username;
const password = req.body.password;
// TODO: 验证用户名和密码是否正确
res.send('登录成功!');
});
app.post('/register', (req, res) => {
const username = req.body.username;
const password = req.body.password;
// TODO: 将用户名和密码保存到数据库中
res.send('注册成功!');
});
app.listen(3000, () => {
console.log('小米商城登录注册服务已启动,访问地址:http://localhost:3000');
});
```
以上代码仅供参考,实际开发中需要根据具体需求进行修改和完善。