使用MYSQL插入数据但没有任何反应

时间:2016-08-21 12:01:46

标签: java php android mysql

我正在尝试将数据从我的应用程序插入到MYSQL数据库中。我正在使用HttpURLConnection打开连接并使用BufferedWriter进行编写。一切正常(没有任何异常捕获)但不知何故没有数据插入表中。 (我正在关注this教程)。

我正在使用AsyncTask在后​​台进行网络连接。如下所示,我创建了一个从AsyncTask扩展的新类。

public class BackgroundTask extends AsyncTask<String, Void, String>
{
    Context ctx;
    BackgroundTask(Context ctx)
    {
        this.ctx = ctx;
    }

这是doInBackground方法。

@Override
protected String doInBackground(String... strings)
{
    String registerUrl = "http://localhost/APPoint/register.php";
    String method = strings[0];
    if (method.equals("register"))
    {
        try
        {
            String gebruikersnaam = strings[1];
            String wachtwoord = strings[2];
            String voornaam = strings[3];
            String tussenvoegsel = strings[4];
            String achternaam = strings[5];
            String bedrijfsnaam = strings[6];
            String email = strings[7];
            String telefoonnummer = strings[8];
            URL url = new URL(registerUrl);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setRequestMethod("POST");
            conn.setDoOutput(true);
            OutputStream OS = conn.getOutputStream();
            BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(OS));
            String data = URLEncoder.encode("Gebruikersnaam", "UTF-8")+ "=" + URLEncoder.encode(gebruikersnaam, "UTF-8")+"&"+
                    URLEncoder.encode("wachtwoord", "UTF-8")+ "=" + URLEncoder.encode(wachtwoord, "UTF-8")+"&"+
                    URLEncoder.encode("voornaam", "UTF-8")+ "=" + URLEncoder.encode(voornaam, "UTF-8")+"&"+
                    URLEncoder.encode("tussenvoegsel", "UTF-8")+ "=" + URLEncoder.encode(tussenvoegsel, "UTF-8")+"&"+
                    URLEncoder.encode("achternaam", "UTF-8")+ "=" + URLEncoder.encode(achternaam, "UTF-8")+"&"+
                    URLEncoder.encode("bedrijfsnaam", "UTF-8")+ "=" + URLEncoder.encode(bedrijfsnaam, "UTF-8")+"&"+
                    URLEncoder.encode("email", "UTF-8")+ "=" + URLEncoder.encode(email, "UTF-8")+"&"+
                    URLEncoder.encode("telefoonnummer", "UTF-8")+ "=" + URLEncoder.encode(telefoonnummer, "UTF-8");
            try {
                bw.write(data);
            }catch(Exception e)
            {
                e.printStackTrace();
            }
            bw.flush();
            InputStream inputS = conn.getInputStream();
            inputS.close();
            bw.close();
            OS.close();

        } catch (IOException e) {
            e.printStackTrace();
        }
        return "Registreren voltooid";
    }
    return null;
}

我的php数据库连接初始化程序。

<?php

define('HOST', 'localhost');
define('USER', 'root');
define('PASS', '');
define('DB', 'appoint');

$conn = new PDO('mysql:dbname=' . DB . ';host=' . HOST, USER, PASS);
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

我的register.php文件

<?php
$username = filter_var(trim($_POST['gebruikersnaam']), FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_HIGH);
$password = filter_var(trim($_POST['wachtwoord']), FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_HIGH);
$voornaam = filter_var(trim($_POST['voornaam']), FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_HIGH);
$tussenvoegsel = filter_var(trim($_POST['tussenvoegsel']), FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_HIGH);
$achternaam = filter_var(trim($_POST['achternaam']), FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_HIGH);
$bedrijfsnaam = filter_var(trim($_POST['bedrijfsnaam']), FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_HIGH);
$email = filter_var(trim($_POST['email']), FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_HIGH);
$telefoonnummer = filter_var(trim($_POST['telefoonnummer']), FILTER_SANITIZE_NUMBER_INT, FILTER_FLAG_STRIP_HIGH);

if ($username == '' || $password == '' || $voornaam == '' || $tussenvoegsel == '' || $achternaam == '' || $bedrijfsnaam == '' || $email == '' || $telefoonnummer == '') {
    //echo 'Verplichte velden zijn niet ingevoerd!';
} else {
    require_once('DBConnect.php');

    $stmnt = $conn->prepare("INSERT INTO gebruikers (`gebruikersnaam`, `wachtwoord`, `voornaam`, `tussenvoegsel`, `achternaam`, `bedrijfsnaam`, `email`, `telefoonnummer`) "
            . "VALUES (?, ? , ? , ?, ?, ?, ?, ?)");
    try {
        $stmnt->execute(array($username, $password, $voornaam, $tussenvoegsel, $achternaam, $bedrijfsnaam, $email, $telefoonnummer));
    } catch (PDOException $ex) {
        if ($ex->errorInfo[1] == 1062) {
            echo 'duplicate entry';
        } else {
            var_dump($ex);
        }
    }
}

起初我以为我的网址错了。我尝试过使用:

"http://127.0.0.1/APPoint/register.php"
"http://localhost/APPoint/register.php"
"http://10.0.2.2/APPoint/register.php"
"http://192.168.0.1/APPoint/register.php"

似乎什么都没做。如果有人可以得到一些意见,将不胜感激。

编辑我应该提到我没有使用AVD来测试代码。我正在使用我自己的三星设备。

修改为backgroundtask添加执行

if(!errors)
        {
            String method = "register";
            BackgroundTask bgTask = new BackgroundTask(this);
            bgTask.execute(method, gebruikersnaam, wachtwoord, voornaam, tussenvoegsel, achternaam, bedrijfsnaam, email, telefoonnummer);
            finish();
        }

编辑在logcat上运行AVD时出现此错误(可能是android错误): getSlotFromBufferLocked:未知缓冲区0xb4095170 谷歌搜索后,它看起来像一个关于权限的一些Android错误。但我已经在我的清单中获得了互联网许可。

<uses-permission android:name="android.permission.INTERNET"></uses-permission>

2 个答案:

答案 0 :(得分:0)

当您调用conn.getInputStream()或conn.getResponseCode()时,会将请求发送到服务器。如果你不这样做,没有任何反应。请将这些方法之一添加到doInBackground()。

答案 1 :(得分:0)

您是否为AsyncTask调用execute()方法?

如何将您的服务器托管到应用程序?您无法使用手机访问本地主机。

有一个名为ngrok的智能工具可以将您的本地主机打开到互联网上。在Android开发中使用localhost作为Android应用程序的服务器非常容易。 访问https://ngrok.com