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[英]passing multiple latitude and longitude in to google maps from servlet to jsp
[英]Retrieving latitude and longitude from mysql, passing it to google maps api
我是一個完整的初學者,只是想知道是否存在將這些位置傳遞到我的HTML腳本中的google maps的簡單方法。
我可以像這樣很好地檢索坐標
PHP(有效):
<?php
require_once "sql.php";
error_reporting(E_ALL ^ E_NOTICE);
ini_set('display_errors','On');
$result = array();
$result['success'] = false;
$order_by = $_REQUEST['sort_by'];
$query = "SELECT venue_name, latitude, longitude, id FROM venues";
if ($result_set = Sql::query($query)) {
$result['success'] = true;
$result['message'] = "All Venues" ;
$rows = mysqli_num_rows($result_set);
$result['rows'] = array();
for ($i = 0; $i<$rows; $i++) {
$tmpRow = mysqli_fetch_assoc($result_set);
$result['rows'][$i] = $tmpRow;
}
} else {
$result['message'] = "Failed to read Cafes" ;
}
print(json_encode($result));
jQuery(單獨的.js的一部分,可以工作):
function success_get_locations(response) {
if(response.success) {
var cafe_loc = '';
for (var i = 0; i < response.rows.length; i++) {
var venue_name = response.rows[i].venue_name;
var venue_lat = response.rows[i].latitude;
var venue_long = response.rows[i].longitude;
var id = response.rows[i].id;
cafe_loc += venue_name + venue_lat + venue_long + id;
}
}
}
我只需要知道如何從我的JQuery中的function success_locations()
將這些位置添加到google maps var locations []
,這些var locations []
在我的HTML中:
<div id="map" style="width: 500px; height: 400px;"></div>
<script type="text/javascript">
var locations = [
['Bondi Beach', -33.890542, 151.274856, 4],
['Coogee Beach', -33.923036, 151.259052, 5],
['Cronulla Beach', -34.028249, 151.157507, 3],
['Manly Beach', -33.80010128657071, 151.28747820854187, 2],
['Maroubra Beach', -33.950198, 151.259302, 1]
];
var map = new google.maps.Map(document.getElementById('map'), {
zoom: 10,
center: new google.maps.LatLng(-33.92, 151.25),
mapTypeId: google.maps.MapTypeId.ROADMAP
});
var infowindow = new google.maps.InfoWindow();
var marker, i;
for (i = 0; i < locations.length; i++) {
marker = new google.maps.Marker({
position: new google.maps.LatLng(locations[i][1], locations[i][2]),
map: map
});
google.maps.event.addListener(marker, 'click', (function(marker, i) {
return function() {
infowindow.setContent(locations[i][0]);
infowindow.open(map, marker);
}
})(marker, i));
}
</script>
謝謝詹姆斯
這一點沒有多大意義:
cafe_loc += venue_name + venue_lat + venue_long + id;
您將獲得一系列不錯的結果,將這些位吸入單個變量中,然后將它們全部組合成一個大字符串。 例如,對於JS代碼中的示例位置,您實際上是在構建
Bondi Beach-33.890542151.2748564
為什么不將它們保留為已存在的數組呢? 或者,如果數組的順序不正確,則可以使用正確順序的元素構建一個NEW數組:
locs_for_google = [];
for (var i = 0; i < response.rows.length; i++) {
locs_for_google[i] = [
response.rows[i].venue_name,
response.rows[i].latitude,
response.rows[i].longitude,
response.rows[i].id
];
}
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