问题：将变量传递到插入语句时，我在数据库中收到空插入。变量有名字、姓氏、电子邮件、密码。
我所知道的：我知道我正在获取用户输入表单数据。我正在安慰它们在插入语句之前存储的变量，该语句起作用并将表单数据打印到控制台。当表单在网页上提交时，它存储“firstName”、“LastName”、“email”、“passW”，这些都是变量。但是当我将它们传递到 MySQL Workbench 时，它们发布为空。我的结论是变量没有正确传递，但是当我尝试此页面和其他页面的建议时，它会抛出一个语法错误，表明 SQL 语法不正确。我尝试添加尽可能多的信息，如果您还需要我未提供的信息或需要我发布测试结果，LMK。
Code
var express = require("express");
var http = require("http");
var mysql = require("mysql");
var express = require("express");
var path = require("path");
var app = express();
var PORT = 3001;
// Sets up the Express app to handle data parsing
app.use(express.urlencoded({ extended: false }));
app.use(express.static(path.join(__dirname, 'public'))); // testing
app.use(express.json());
app.use("/assets", express.static("assets"))
// home page route
app.get("/", function(req, res) {
res.sendFile(path.join(__dirname, "index.html"));
});
// create account route
app.get("/create", function(req, res) {
res.sendFile(path.join(__dirname, "create.html"))
});
// login route
app.get("/login", function(req, res) {
res.sendFile(path.join(__dirname, "login.html"))
});
// DB Connection
var connection = mysql.createConnection({
host: "localhost",
user: "root",
password: "",
database: "sportsCorner",
port: 3306,
});
// connection response
connection.connect(function (err) {
console.log("SQL connected as id " + connection.threadId)
});
// Takes the data from our login form
app.post('/handler', function (req, res) {
// user input from the forms
var firstName = req.body.firstName;
var lastName = req.body.lastName;
var email = req.body.email;
var passW = req.body.password;
// testing our responses stored in the variables
console.log("F: " + firstName, "L: " + lastName, "E: " + email, "P: " + passW)
connection.query("INSERT INTO loginInfo VALUES(firstName, lastName, email, passW)", function (err, res) {
if (err) throw err;
console.log("Inserted ...")
});
// Getting login info from DB
connection.query('SELECT * from loginInfo', function (err, res) {
if (err) throw err;
console.log(res)
console.log("Response ...")
})
});
// Start Server
app.listen(PORT, function() {
console.log("Server listening on: http://localhost:" + PORT);
});
</script>
<HTML> (FORM)
<form method="POST" action="/handler">
<input type="text" name="firstName" placeholder="First Name">
<input type="text" name="lastName" placeholder="Last Name">
<input type="email" name="email" placeholder="Email">
<input type="password" name="password" placeholder="Password">
<input type="submit" />
</form>
</HTML>
感谢您提前的帮助
