如何从Android的活动提交的变量，以网站的网址？ [英] How do I submit variables from Android Activity to website url?

问题描述

我已经建立了一个应用程序，它就像一个形式，它需要四个字段，并验证信息，以确保没有无效字符输入。这四个字段存储在变量：

I have an application built that works like a form, it takes four fields and validates the information in order to make sure that no invalid characters are entered. These four fields are stored in variables:

• 电话
• 名称
• 电子邮件

• 评论

• Phone
• Name
• Email

• Comments

现在我想表单数据（无论是进入这四个领域，并存储到变量）提交的URL（将使用的 http://www.test.com ），但我不知道如何去这样做。我想我在寻找所谓的HttpURLConnection的，但我不知道如何指定哪个变量被发送。下面我将code发现从网站 http://developer.android。 COM /参考/爪哇/ NET / HttpURLConnection.html

Now I want to submit the form data (whatever is entered into these four fields and stored to the variables) to a url (will use http://www.test.com), but I am not sure how to go about doing this. I think I am looking for something called the HttpURLConnection, but I am not sure how to specify which variable is sent. The code below I found from the website http://developer.android.com/reference/java/net/HttpURLConnection.html

private class UploadFilesTask extends AsyncTask<URL, Integer, Long>{
protected Long doInBackground(URL... urls) {

    try {
        HttpClient http = new DefaultHttpClient();
        HttpPost post = new HttpPost("http://www.test.com");

        List<NameValuePair> data = new ArrayList<NameValuePair>();
        data.add(new BasicNameValuePair("phone", "value"));
        data.add(new BasicNameValuePair("name", "value"));
        data.add(new BasicNameValuePair("email", "value"));
        data.add(new BasicNameValuePair("comments", "value"));
        post.setEntity(new UrlEncodedFormEntity(data));

        HttpResponse response = http.execute(post);
        // do something with the response
    }
    catch (ClientProtocolException e) {
        // do something
        finish();
    }
    catch (IOException e) {
        // do something
        finish();
    }

}

}

任何帮助将是非常美联社preciated，谢谢！

Any help would be much appreciated, thank you!

推荐答案

将表单数据发送到服务器的最简单方法是使用HttpClient和HttpPost。

The simplest way to send form data to a server is to use HttpClient, and HttpPost.

尝试是这样的：

try {
    HttpClient http = new DefaultHttpClient();
    HttpPost   post = new HttpPost("http://www.example.com/process");

    List<NameValuePair> data = new ArrayList<NameValuePair>();
    data.add(new BasicNameValuePair("phone", "value");
    data.add(new BasicNameValuePair("name", "value");
    data.add(new BasicNameValuePair("email", "value");
    data.add(new BasicNameValuePair("comments", "value");
    post.setEntity(new UrlEncodedFormEntity(data));

    HttpResponse response = http.execute(post);
    // do something with the response
}
catch (ClientProtocolException e) {
    // do something
}
catch (IOException e) {
    // do something
}

请注意，你要在AsyncTask的执行此操作，这样你就不会锁定在UI线程等待网络操作完成。

Note, you'll want to perform this operation in an AsyncTask so you don't lock up the UI thread waiting for the networking operations to complete.

修改

下面是它可能看起来像在AsyncTask的一个简单快速的例子。

Here's a simple quick example of what it might look like in an AsyncTask.

public class SendTask extends AsyncTask<Void, Void, Boolean> {

    String responseString;

    @Override
    protected Boolean doInBackground(Void... params) {
        try {

            HttpClient http = new DefaultHttpClient();
            HttpPost post = new HttpPost("http://www.test.com");

            List<NameValuePair> data = new ArrayList<NameValuePair>();
            data.add(new BasicNameValuePair("phone", "value"));
            data.add(new BasicNameValuePair("name", "value"));
            data.add(new BasicNameValuePair("email", "value"));
            data.add(new BasicNameValuePair("comments", "value"));
            post.setEntity(new UrlEncodedFormEntity(data));

            HttpResponse response = http.execute(post);
            responseString = new BasicResponseHandler().
                                 handleResponse(response); // Basic handler
            return true;
        }
        catch (ClientProtocolException e) {
            // do something useful to recover from the exception
            // Note: there may not be anything useful to do here
        }
        catch (IOException e) {
            // do something useful to recover from the exception
            // Note: there may not be anything useful to do here
        }           
        return false;
    }
    @Override
    protected void onPostExecute(Boolean success) {
        // TODO: Do something more useful here
        if (success) {
            Toast.makeText(MainActivity.this, "Success: " + responseString, Toast.LENGTH_LONG).show();
        } else {
            Toast.makeText(MainActivity.this, "Failed", Toast.LENGTH_LONG).show();
        }
    }
}

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