Question

我正在尝试使用HTML表单中的节点和Express框架将数据插入MySQL。表单的代码是：

<html>
<head>
<title>Personal Information</title>
</head>
<body>
<div id="info">
<h1>Personal Information</h1>
<form action="/myaction" method="post">

        <label for="name">Name:</label>
        <input type="text" id="name" name="name" placeholder="Enter your full name" />
    <br><br>
        <label for="email">Email:</label>
        <input type="email" id="email" name="email" placeholder="Enter your email address" />
    <br><br>
        <label for="city">City:</label>
        <input type="text" id="city" name="city" placeholder="Enter your city" />
    <br><br>
    <label for="pincode">Pincode:</label>
        <input type="text" id="pincode" name="pincode" placeholder="Enter your pincode" />
    <br><br>
        <input type="submit" value="Send message" />
</form>
</div>
</body>
</html>

和.js文件是：

var express = require('express');
var app = express();
var ejs = require('ejs');
var mysql = require('mysql');
var bodyParser = require('body-parser');
app.use(bodyParser.urlencoded({ extended: true })); 
var HOST = 'localhost';
var PORT = 3000
var MYSQL_USER = 'root';
var MYSQL_PASS = 'jelly123#';
var DATABASE = 'form';
var TABLE = 'info'; 

var mysql = mysql.createConnection({
host: HOST,
port: PORT,
user: MYSQL_USER,
password: MYSQL_PASS,
});
app.get('/home',function(req,res,next){
res.sendfile('views/forms.html');
});
app.post('/myaction', function(req, res) {
console.log('req.body');
console.log(req.body);
res.write('You sent the name "' + req.body.name+'".\n');
res.write('You sent the Email "' + req.body.email+'".\n');
res.write('You sent the City "' + req.body.city+'".\n');
res.write('You sent the Pincode "' + req.body.pincode+'".\n');
res.end()

mysql.query("Insert into "+TABLE+" (name,email,city,pincode) VALUES ('"+req.body.name+"','"+req.body.email+"','"+req.body.city+"','"+req.body.pincode+"')",function(err, result)      
{                                                      
  if (err)
     throw err;
});
});
app.listen(3000);
console.log('Example app listening at port:3000');

我可以输入表单数据并将其显示在页面http://localhost:3000/myaction中，但无法将数据插入数据库请提及我在哪里做错了。

提前致谢。

Answer 1

var express = require('express');
var app = express();
var ejs = require('ejs');
var pg = require('pg');
var bodyParser = require('body-parser');
app.use(bodyParser.urlencoded({ extended: true })); 


        var conString = process.env.DATABASE_URL || "postgres://postgres:Emdsystems@localhost:5432/student";
        var client = new pg.Client(conString);
        client.connect();

app.get('/',function(req,res,next){
res.sendfile('views/forms.html');
});

app.post('/myaction', function(req, res) {

console.log('req.body');
console.log(req.body);
res.write('You sent the name "' + req.body.name+'".\n');
res.write('You sent the Email "' + req.body.email+'".\n');
res.write('You sent the City "' + req.body.city+'".\n');
res.write('You sent the Pincode "' + req.body.pincode+'".\n');
res.end()

client.query("Insert into record (name,email,city,pincode) VALUES ('"+req.body.name+"','"+req.body.email+"','"+req.body.city+"','"+req.body.pincode+"')",function(err, result)      
{                                                      
  if (err)
     throw err;
});
});
app.listen(3000);
console.log('Example app listening at port:3000');

Answer 2

试试这个

mysql.query('select id, name, price from ' + TABLE + ' where price < 100',
function(err, result, fields) {
    if (err) throw err;
    else {
        console.log('Gadgets which costs less than $100');
        console.log('----------------------------------');
        for (var i in result) {
            var gadget = result[i];
            console.log(gadget.name +': '+ gadget.price);
        }
    }
});

参考：http://www.hacksparrow.com/using-mysql-with-node-js.html

Answer 3

这是我的js文件 -

var express = require("express");
var app     = express();
var path    = require("path");
var mysql = require('mysql');
var bodyParser = require('body-parser');
app.use(bodyParser.urlencoded({ extended: false }));
app.use(bodyParser.json());
var con = mysql.createConnection({
  host: "localhost",
  user: "root",
  password: "",
  database: "mydb"
});
app.get('/',function(req,res){
  res.sendFile(path.join(__dirname+'/index.html'));
});
app.post('/submit',function(req,res){

  var name=req.body.name;
  var email=req.body.email;
  var username=req.body.username;
  res.write('You sent the name "' + req.body.name+'".\n');
  res.write('You sent the email "' + req.body.email+'".\n');
  res.write('You sent the username "' + req.body.username+'".\n');

  con.connect(function(err) {
  if (err) throw err;
  var sql = "INSERT INTO form (name, email,description) VALUES ('"+name+"', '"+email+"','"+username+"')";
  con.query(sql, function (err, result) {
    if (err) throw err;
    console.log("1 record inserted");
     res.end();
  });
  });
})
app.listen(3000);
console.log("Running at Port 3000");

这是我的html文件 -

<html>
<head>
    <title> test </title>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
</head>
    <body>
        <form action="/submit" method="POST">
            <fieldset>
                <label for="name">Name: </label>
                <input type="text" id="name" name="name" autofocus />
                <br/>
                <label for="email">Email: </label>
                <input type="email" id="email" name="email"  />
                <br/>
                <label for="username">User name: </label>
                <input type="textbox" id="username" name="username" />
                <br/>
                <input type="submit" value="create profile" />
            </fieldset>
        </form>
    </body>
</html>

Answer 4

你可以试试这个

我在节点中使用快速js这样做先决条件：安装节点js，mysql，express，express-generator

将此内容写入index.jade文件

<html>
<head>
<title> test </title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
</head>
<body>
<form action="/submitform/" method="POST">
<fieldset>
<label for="name">Name: </label>
<input type="text" id="name" name="name" autofocus />
<br/>
<label for="email">Email: </label>
<input type="email" id="email" name="email"  />
<br/>
<label for="description">Description: </label>
<textarea id="description" name="description"></textarea>
<br/>
<input type="submit" value="create profile" />
</fieldset>

</form>
</body>
</html>

然后，在index.js文件中写这个

var express = require('express');
var router = express.Router();
var mysql = require('mysql');
var con = mysql.createConnection({
     host: "localhost",
     user: "root",
     password: "",
     database: "testn"
});

router.post('/submitform', function(req, res, next) {
    console.log(req.body.name);
    console.log(req.body.email);
    console.log(req.body.description);
    con.connect(function(err) {
  if (err) throw  err;
  console.log("connected");
  var sql = "INSERT INTO `form`(`name`,`email`, `description`) VALUES ('"+req.body.name+"','"+req.body.email+"','"+req.body.description+"')";
  con.query(sql, function(err, result)  {
   if(err) throw err;
   console.log("table created");
  });
});

  res.render('index', { title: 'Express' });
});


module.exports = router;

此代码将从表单中将值插入到节点js

中的MySql中

希望这会对你有所帮助

使用Node JS将表单中的数据插入MYSQL

4 个答案: