Question

我试过看几个链接，但我似乎无法做到正确。我试图从我的Android应用程序发送一个包含'用户名'和'密码'的JSON对象。但我不确定这些数据是否实际上已发送到网络服务。我不太确定我是否有正确的代码来读取PHP脚本中的JSON对象。

    JSONObject jsonObject = new JSONObject();

    String userID = "";

    HttpClient httpClient = new DefaultHttpClient();
    HttpPost httpPost = new HttpPost(loginURI);
    HttpParams httpParams = new BasicHttpParams();
    HttpConnectionParams.setConnectionTimeout(httpParams, 10000);
    HttpConnectionParams.setSoTimeout(httpParams,10000);

    try {

        jsonObject.put("username", username);
        jsonObject.put("password", password);

        JSONArray array = new JSONArray();

        StringEntity stringEntity = new StringEntity(jsonObject.toString());
        stringEntity.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE, "application/json"));
        httpPost.setEntity(stringEntity);
        HttpResponse httpResponse = httpClient.execute(httpPost);

        HttpEntity entity = httpResponse.getEntity();

        if (entity != null) {
            userID = EntityUtils.toString(httpResponse.getEntity());
            Log.i("Read from server", userID);
         }

    }catch (IOException e){
        Log.e("Login_Issue", e.toString());
    }catch (JSONException e) {
        e.printStackTrace(); 
    }

这是PHP脚本的开头。

<?php

include('dbconnect.php'); 

$tablename = 'users';

 //username and password sent from android
$username=$_REQUEST['username'];
$password=$_REQUEST['password'];

 .....
 ?>

你能告诉我，我在这里做错了吗？我似乎无法弄明白。

谢谢

Answer 1

您应该在NameValuePairs对象中添加HttpPost列表，以便了解可用于在PHP脚本中检索数据的密钥。请参阅下面的示例代码段。

Java：

List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("username", username));
nameValuePairs.add(new BasicNameValuePair("password", password));
httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs));

PHP：

$username = $_POST['username']
$password = $_POST['password']

从Android接收JSON对象到PHP Webservice

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