feat(server.tests.test5): 新增 server 实验5

Server/tests/test5/index.js

@@ -0,0 +1,106 @@
+const express = require("express")
+const mysql = require("mysql2")
+const cors = require("cors")
+
+const app = express()
+const port = 3000
+
+const db = mysql.createConnection({
+    host: "127.0.0.1",
+    port: 3306,
+    user: "root",
+    password: "123456",
+    database: "express_db"
+})
+
+db.connect((err) => {
+    if (err) {
+        console.log("Error connect to MySQL database:", err);
+        return;
+    }
+    console.log("Connected to MySQL database");
+})
+
+app.use(express.json())
+app.use(express.urlencoded({ extended: false }))
+app.use(cors({
+    origin: "http://127.0.0.1:3000",
+    method: ["GET", "POST"],
+    allowedHeaders: ['Content-Type', "Authorization"]
+}))
+app.use(express.static("public"))
+
+app.options('/login', cors());
+
+app.post('/register', (req, res) => {
+    const { username, password, email, gender, hobbies, city, description } = req.body;
+    const hobbiesStr = hobbies ? hobbies.join(",") : "";
+    const sql = 'INSERT INTO users (username, password, email, gender, hobbies, city, description) VALUES (?,?,?,?,?,?,?)'
+    const values = [username, password, email, gender, hobbiesStr, city, description]
+    db.query(sql, values, (err, result) => {
+        if (err) {
+            console.error('Error inserting data into MySQL database:', err);
+            res.status(500).send("Error inserting data into MySQL database");
+            return;
+        }
+        console.log("inserting data successful!");
+        res.send("Register successful")
+    })
+})
+
+app.post("/login", (req, res) => {
+    const { username, password } = req.body;
+    const sql = 'SELECT * FROM users WHERE username = ? AND password = ?';
+    const values = [username, password];
+
+    db.query(sql, values, (err, result) => {
+        if (err) {
+            console.error("Error querying the database:", err);
+            res.status(500).send("Error querying the database");
+            return;
+        }
+        if (result.length > 0) {
+            console.log('Login successful');
+            res.send('Login successful');
+        } else {
+            console.log("Login failed");
+            res.send("Login failed");
+        }
+    })
+})
+
+app.post("/update-password", (req, res) => {
+    const { username, currentPassword, newPassword } = req.body;
+    const sqlCheck = 'SELECT * FROM users WHERE username = ? AND password = ?';
+    const checkValues = [username, currentPassword];
+    db.query(sqlCheck, checkValues, (err, result) => {
+        if (err) {
+            console.error("Error querying the database:", err);
+            res.status(500).send("Error querying the database");
+            return;
+        }
+        if (result.length == 0) {
+            console.log("当前密码输入错误");
+            res.status(400).send("Current password is incorret");
+            return;
+        }
+        const updateSql = "UPDATE users SET password = ? WHERE username = ?";
+        const updateValue = [newPassword, username];
+
+        db.query(updateSql, updateValue, (err2, result2) => {
+            if (err2) {
+                console.error("Error updating user password:", err2);
+                res.status(500).send('Error updating user password');
+                return;
+            }
+            console.log(result2);
+            
+            console.log("User password update successful");
+            res.send("User password update successful")
+        })
+    })
+})
+
+app.listen(port, () => {
+    console.log(`Server is running: http://127.0.0.1:${port}`);
+})