我正在尝试使用从我的 phpsearch.php 文件返回的数据填充 JSON 请求(此处显示)
<?php
include "base.php";
$name = $_GET["name"];
$query = "SELECT lat, lng FROM markers WHERE name = '".$name."'";
$result = mysql_query($query);
$json = array();
while($row = mysql_fetch_array ($result))
{
$bus = array(
'lat' => $row['lat'],
'lng' => $row['lng']
);
array_push($json, $bus);
}
$jsonstring = json_encode($json);
echo $jsonstring;
?>
数据以这种格式显示在控制台中:
[{"lat":"37.730267","lng":"-122.498589"}]
路由计算功能在问题的底部,我之前使用过异步 JSON rewquest,但这导致代码在设置原始值之前执行,现在正在设置但看起来不正确
如何确保我的纬度和经度结果采用正确的 JSON 格式?目前 JSON 请求如下所示:
Request URL:https://maps.googleapis.com/maps/api/js/DirectionsService.Route?4b0&5m4&1m3&1m2&1dNaN&2dNaN&5m4&1m3&1m2&1d37.738029&2d-122.499481&6e1&8b1&12sen-GB&100b0&102b0&callback=_xdc_._1rqnjk&token=80599
路线计算代码:
function calcRoute() {
var startname = document.getElementById('start').value;
var endname = document.getElementById('end').value;
var waypts = [];
var checkboxArray = document.getElementById('waypoints');
for (var i = 0; i < checkboxArray.length; i++) {
if (checkboxArray.options[i].selected == true) {
waypts.push({
location:checkboxArray[i].value,
stopover:true});
}
}
$.ajax({
url:'phpsearch2.php',
dataType:'html',
data:{name:startname},
async:false,
success:function (result)
{
console.log(result)
origin = new google.maps.LatLng(result[0].lat, result[0].lng);
}});
var end = new google.maps.LatLng('37.738029', '-122.499481');
var request = {
origin: origin,
destination: end,
waypoints: waypts,
optimizeWaypoints: true,
travelMode: google.maps.DirectionsTravelMode.WALKING
};
directionsService.route(request, function(response, status) {
document.write('<b>'+ origin +'</b>');
if (status == google.maps.DirectionsStatus.OK) {
directionsDisplay.setDirections(response);
var route = response.routes[0];
var summaryPanel = document.getElementById('directions_panel');
summaryPanel.innerHTML = '';
// For each route, display summary information.
for (var i = 0; i < route.legs.length; i++) {
var routeSegment = i + 1;
summaryPanel.innerHTML += '<b>Time for a Walkabout </b><br>';
summaryPanel.innerHTML += '<b>From ' + startname + ' </b>';
summaryPanel.innerHTML += '<b>to ' + endname + '('+ route.legs[i].distance.text +')</b><br>';
}
}
});
}