5 changed files with 83 additions and 46 deletions
--- a/01.HTML快速入门.html
+++ b/01.HTML快速入门.html
@ -1,44 +0,0 @@
-<html>
-<head>
-    <title>HTML快速入门</title>
-    <!-- 给页面加个基础样式，让它更好看 -->
-    <style>
-        body {
-            font-family: 微软雅黑;
-            text-align: center;
-            margin-top: 50px;
-            background-color: #f0f0f0;
-        }
-        h1 {
-            color: #2c3e50;
-        }
-        /* 按钮样式 */
-        .btn {
-            padding: 10px 20px;
-            font-size: 18px;
-            background-color: #3498db;
-            color: white;
-            border: none;
-            border-radius: 5px;
-            cursor: pointer;
-            margin-top: 20px;
-        }
-        .btn:hover {
-            background-color: #2980b9;
-        }
-    </style>
-</head>
-<body>
-    <h1>Hello HTML</h1>
-    < img src="img/1.png" alt="示例图片">
-    <!-- 新增按钮，点击触发弹窗 -->
-    <button class="btn" onclick="showMsg()">点击我！</button>
-
-    <!-- 新增JS交互代码 -->
-    <script>
-        function showMsg() {
-            alert("🎉 欢迎使用Git版本控制！\n这是你扩展的第一个HTML交互功能~");
-        }
-    </script>
-</body>
-</html>
--- a/JDBCUtil.java
+++ b/JDBCUtil.java
--- a/README.md
+++ b/README.md
@ -1,2 +0,0 @@
-# yyds
-
--- a/login.jsp
+++ b/login.jsp
@ -0,0 +1,67 @@
+<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
+<%@ page import="java.sql.*" %>
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="UTF-8">
+    <title>登录</title>
+</head>
+<body>
+    <h2>用户登录</h2>
+    <form method="post" action="login.jsp">
+        <div>
+            用户名：<input type="text" name="name" required>
+        </div>
+        <div>
+            密码：<input type="password" name="password" required>
+        </div>
+        <div>
+            <button type="submit">登录</button>
+        </div>
+    </form>
+
+    <%
+    if ("POST".equalsIgnoreCase(request.getMethod())) {
+        String name = request.getParameter("name");
+        String password = request.getParameter("password");
+
+        String url = "jdbc:mysql://localhost:3306/demo?useSSL=false&serverTimezone=UTC&characterEncoding=utf8";
+        String dbUser = "root";
+        String dbPwd = "1234";
+
+        Connection conn = null;
+        PreparedStatement pstmt = null;
+        ResultSet rs = null;
+
+        try {
+            Class.forName("com.mysql.cj.jdbc.Driver");
+            conn = DriverManager.getConnection(url, dbUser, dbPwd);
+
+            String sql = "SELECT * FROM tb_user WHERE name = ? AND password = ?";
+            pstmt = conn.prepareStatement(sql);
+            pstmt.setString(1, name);
+            pstmt.setString(2, password);
+            rs = pstmt.executeQuery();
+
+            if (rs.next()) {
+                out.println("<p>用户存在</p >");
+            } else {
+                out.println("<p>用户不存在</p >");
+            }
+        } catch (ClassNotFoundException e) {
+            out.println("<p>数据库驱动加载失败！</p >");
+        } catch (SQLException e) {
+            out.println("<p>数据库操作失败：" + e.getMessage() + "</p >");
+        } finally {
+            try {
+                if (rs != null) rs.close();
+                if (pstmt != null) pstmt.close();
+                if (conn != null) conn.close();
+            } catch (SQLException e) {
+                e.printStackTrace();
+            }
+        }
+    }
+    %>
+</body>
+</html>
--- a/readme.txt
+++ b/readme.txt
@ -0,0 +1,16 @@
+# JDBC 登录演示项目
+基于 JDBC 的用户登录验证 Demo
+
+## 功能
+- 实现用户账号密码的数据库校验
+- 练习 JSP + Servlet + MySQL 开发流程
+
+## 技术栈
+- Java
+- JSP/Servlet
+- MySQL 8.0
+- Tomcat 7
+
+## 作者
+zhangsiyi
+2026-03-27