php - Ajax 调用在 iPhone 应用程序和 arduino 中不起作用
<p><p>我创建了一个将坐标发送到 URL 的 Arduino 项目。该 URL 执行一些 ajax 调用。在浏览器中它工作正常，但是当我在 Arduino 上尝试它时它不起作用。所以我尝试用 iOS 应用程序做同样的事情，但我遇到了同样的问题。这是 Arduino 和 iOS 应用请求的页面上的代码。</p>
<pre><code>var directionsService = new google.maps.DirectionsService();
var base_url = window.location;
var received_data = <?php echo json_encode($received_data); ?>;
$.ajax({
url: 'http://gps-tracker.domain.nl/_api/handler.php',
data: { action: 'post', device_id: received_data['device_id']},
type: 'GET',
dataType:"jsonp",
jsonp:"callback",
success: function (response){
var error = [];
var total = response.length;
for (var type in response) {
if(response.types == 'area'){
var x = checkInsideCircle(response.longitude, response.latitude, received_data['longitude'], received_data['latitude'], response.reach / 1000);
if(x == false){
// Outside
error.push(true);
}else{
// Inside
error.push(false);
}
}else if(response.types == 'route'){
// Check route
checkOnRoute(response.start_latitude, response.start_longitude, response.end_latitude, response.end_longitude, response.type, response['reach'], type, function(result) {
error.push(result);
if(error.length == total){
if(error.indexOf(false) >= 0){
// Device is inside route or area
outside = false;
}else{
// Send data to database
$.ajax({
url: 'http://gps-tracker.domain.nl/_api/handler.php',
data: { action: 'post', device_id: received_data['device_id'], longitude: received_data['longitude'], latitude: received_data['latitude']},
type: 'GET',
dataType: 'json',
success: function (response){
console.log('good');
},error: function(jq,status,message) {
alert('A jQuery error has occurred. Status: ' + status + ' - Message: ' + message);
}
});
}
}
});
}
}
},error: function(jq,status,message) {
alert('A jQuery error has occurred. Status: ' + status + ' - Message: ' + message);
}
});
</code></pre>
<p>这里是 ajax 请求请求的 handler.php 文件中的代码。</p>
<pre><code>$action = isset($_REQUEST['action']) ? $_REQUEST['action'] : false;
// Switch actions
switch($action) {
case 'get':
$callback ='callback';
if(isset($_GET['callback'])){
$callback = $_GET['callback'];
}
$routes = ORM::for_table('gps_tracker_route')
->inner_join('gps_tracker_device', array('gps_tracker_device.device_id', '=', 'gps_tracker_route.device_id'))
->where('gps_tracker_route.device_id', $_GET['device_id'])
->where('gps_tracker_device.device_id', $_GET['device_id']);
if($routes = $routes->find_many()){
foreach($routes as $k=>$v){
$v = $v->as_array();
if($v['status'] == 'on' or strtotime(date('Y-m-d H:i:s')) > strtotime($v['start_time']) and strtotime(date('Y-m-d H:i:s')) < strtotime($v['end_time'])){
$response1[$k] = $v;
$response1[$k]['types'] = 'route';
}
}
}
$area = ORM::for_table('gps_tracker_area')
->inner_join('gps_tracker_device', array('gps_tracker_device.device_id', '=', 'gps_tracker_area.device_id'))
->where('gps_tracker_area.device_id', $_GET['device_id'])
->where('gps_tracker_device.device_id', $_GET['device_id']);
if($area = $area->find_many()){
foreach($area as $k=>$v){
$v = $v->as_array();
if($v['status'] == 'on' or strtotime(date('Y-m-d H:i:s')) > strtotime($v['start_time']) and strtotime(date('Y-m-d H:i:s')) < strtotime($v['end_time'])){
$response2[$k] = $v;
$response2[$k]['types'] = 'area';
}
}
}
if(isset($response1) and isset($response2)){
$response = array_merge($response1, $response2);
}elseif(isset($response1)){
$response = $response1;
}else{
$response = $response2;
}
if ( isset($response) ) {
if ( is_array($response) ) {
if (function_exists('json_encode')) {
header('Content-Type: application/json');
echo $callback.'(' . json_encode($response) . ')';
} else {
include( ABSOLUTE_PATH . '/classes/json.class.php');
$json = new Services_JSON();
echo $json->encode($response);
}
} else {
echo $response;
}
exit(0);
}else{
exit();
}
break;
case 'post':
$_GET['timestamp'] = date("Y-m-d H:i:s");
$record = ORM::for_table('gps_tracker_device_logging')->create($_GET);
$record->save();
$item = ORM::for_table('gps_tracker_device_logging')
->where('id', $record->id);
if($item = $item->find_one()){
$item = $item->as_array();
echo json_encode($item);
}
break;
default:
die('invalid call');
}
</code></pre>
<p>有人可以帮我吗？</p>
<p><strong>编辑</strong></p>
<p>我认为这与 Javascript 有关。我不知道当像Arduino这样的设备向服务器发出http请求时是否可以使用javascript。有人知道吗？</p></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>我认为这是因为您需要一个支持 JavaScript 的 Web 浏览器。
我不使用 Arduino，但据我所知，它没有“真正的”Web 浏览器——它只能提取/下载数据，但不能执行 JS 部分。
为了让 JS 工作，你需要一些东西来运行它。这就是它在浏览器中工作的原因。</p></p>
<p style="font-size: 20px;">关于php - Ajax 调用在 iPhone 应用程序和 arduino 中不起作用，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/30192432/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/30192432/
</a>
</p>
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