Try this:
app.get('/getUsers', function (req, res) {
var users= [];
var userJSON="";
connection.query('SELECT * FROM USER ORDER BY ID', function (err, rows,
fields) {
if (err) {
console.log('There was an error\n' + err);
}
else {
rows.forEach(function( item){
users.push({ID:item.ID, Username:item.Username,
Email:item.email, Password: item.Password});
});
userToJson = JSON.stringify(users);
console.log(userToJson);
}
});
res.json(users);
}
Regards
Marco
> El 15/07/2016, a las 2:53 a.m., paolodocet <[email protected]> escribió:
>
> I have an HTTP get request to extract from MySQL all records of a User table.
>
> User table looks like as follow:
>
> + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + -
> - ID + Username + Email + Password +
> + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + -
> - - - -
> -
> + 1 + a + [email protected] + 123456789
> +
> - - - -
> -
> + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + -
> - - - -
> -
> + 2 + b + [email protected] + 123456789
> +
> - - - -
> -
> + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + -
> - - - -
> -
> + 3 + c + [email protected] + 123456789
> +
> - - - -
> -
> + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + - + -
>
> Then I create a javascript array where each element is a record of the
> previous table and using stringify I convert the js array in a JSON. My get
> response must reply with this JSON:
>
> app.get('/getUsers', function (req, res) {
>
> var users= [];
> var userJSON="";
>
>
> connection.query('SELECT * FROM USER ORDER BY ID', function (err, rows,
> fields) {
>
> if (err) {
> console.log('There was an error\n' + err);
> }
> else {
> for (var i in rows) {
> users.push({ID:rows[i].ID, Username:rows[i].Username,
> Email:rows[i].email, Password: rows[i].Password});
> }
> userToJson = JSON.stringify(users);
> console.log(userToJson);
> }
> });
> res.setHeader('Content-Type','application/json');
> res.json(userJSON);
> res.end();
>
> });
>
> My res.json(userJSON) does not work and my response is empty. How can I send
> to my client the JSON properly?
>
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