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javascript - 将 Google map 标记保存到数据库

转载 作者:行者123 更新时间:2023-11-29 13:40:54 25 4
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我需要你们的帮助。我编写了允许用户使用“单击”功能创建标记(使用信息窗口)的代码,该功能会将纬度/局域网和其他信息保存到 MySQL 数据库,然后调用该数据库以在 map 上显示标记。当您单击 map 时,它会创建一个标记,但不会将信息窗口中的信息保存到数据库中。我按照谷歌地图开发人员指南中的指南进行操作,但仍然无法使其工作。我什至检查了三次以确保我的 MySQL 登录详细信息正确无误,但仍然没有任何结果。

这是 map 本身的代码:

    <!DOCTYPE html >
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
<title>Google Maps JavaScript API v3 Example: Map Simple</title>
<script type="text/javascript" src="http://maps.googleapis.com/maps/api/js? sensor=false"></script>
<script type="text/javascript">
var marker;
var infowindow;

function initialize() {
var latlng = new google.maps.LatLng(37.4419, -122.1419);
var options = {
zoom: 13,
center: latlng,
mapTypeId: google.maps.MapTypeId.ROADMAP
}
var map = new google.maps.Map(document.getElementById("map-canvas"), options);
var html = "<table>" +
"<tr><td>Name:</td> <td><input type='text' id='name'/> </td> </tr>" +
"<tr><td>Address:</td> <td><input type='text' id='address'/></td> </tr>" +
"<tr><td>Type:</td> <td><select id='type'>" +
"<option value='bar' SELECTED>bar</option>" +
"<option value='restaurant'>restaurant</option>" +
"</select> </td></tr>" +
"<tr><td></td><td><input type='button' value='Save & Close' onclick='saveData()'/></td></tr>";
infowindow = new google.maps.InfoWindow({
content: html
});

google.maps.event.addListener(map, "click", function(event) {
marker = new google.maps.Marker({
position: event.latLng,
map: map
});
google.maps.event.addListener(marker, "click", function() {
infowindow.open(map, marker);
});
});
}

function saveData() {
var name = escape(document.getElementById("name").value);
var address = escape(document.getElementById("address").value);
var type = document.getElementById("type").value;
var latlng = marker.getPosition();

var url = "phpsqlinfo_addrow.php?name=" + name + "&address=" + address +
"&type=" + type + "&lat=" + latlng.lat() + "&lng=" + latlng.lng();
downloadUrl(url, function(data, responseCode) {
if (responseCode == 200 && data.length <= 1) {
infowindow.close();
document.getElementById("message").innerHTML = "Location added.";
}
});
}

function downloadUrl(url, callback) {
var request = window.ActiveXObject ?
new ActiveXObject('Microsoft.XMLHTTP') :
new XMLHttpRequest;

request.onreadystatechange = function() {
if (request.readyState == 4) {
request.onreadystatechange = doNothing;
callback(request.responseText, request.status);
}
};

request.open('GET', url, true);
request.send(null);
}

function doNothing() {}
</script>
</head>

<body style="margin:0px; padding:0px;" onload="initialize()">
<div id="map-canvas" style="width: 500px; height: 300px"></div>
<div id="message"></div>
</body>

</html>

这应该是将信息保存到数据库(phpsqlinfo_addrow.php):

    <?php
require("phpsqlinfo_dbinfo.php");

// Gets data from URL parameters
$name = $_GET['name'];
$address = $_GET['address'];
$lat = $_GET['lat'];
$lng = $_GET['lng'];
$type = $_GET['type'];

// Opens a connection to a MySQL server
$connection=mysql_connect ("localhost", $username, $password);
if (!$connection) {
die('Not connected : ' . mysql_error());
}

// Set the active MySQL database
$db_selected = mysql_select_db($database, $connection);
if (!$db_selected) {
die ('Can\'t use db : ' . mysql_error());
}

// Insert new row with user data
$query = sprintf("INSERT INTO markers " .
" (id, name, address, lat, lng, type ) " .
" VALUES (NULL, '%s', '%s', '%s', '%s', '%s');",
mysql_real_escape_string($name),
mysql_real_escape_string($address),
mysql_real_escape_string($lat),
mysql_real_escape_string($lng),
mysql_real_escape_string($type));

$result = mysql_query($query);

if (!$result) {
die('Invalid query: ' . mysql_error());
}

?>

最佳答案

您好,我的项目保存客户位置时遇到同样的问题,他们点击浏览器,我所做的是将纬度和经度位置保存在两个输入框中,因为{您可以将其隐藏,这样就看不到},并提供提交按钮和提交表单,我已经给出了代码,您也可以将其更改为单击时提交表单通过点击提交表单在 map 上,如果需要,您还可以将纬度和经度存储在同一列中

您需要插入 key

document.getElementById("yourform").submit();



<html>
<head>
<style type="text/css">
#map_canvas {height:300px;width:500px}
</style>
<script type="text/javascript" src="//maps.googleapis.com/maps/api/js?v=3.exp&sensor=false&key=""""youerapikeyhere""""&language=mr"></script>
<script type="text/javascript">
var map;
var marker;
var markersArray = [];
function initialize()
{
var latlng = new google.maps.LatLng(18.5236, 73.8478);
var mapOptions = {
zoom: 13,
center: latlng,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
map = new google.maps.Map(document.getElementById("map_canvas"), mapOptions);
google.maps.event.addListener(map, 'click', function(event) {
if (marker) {
marker.setMap(null); //code
}
//adding marker
document.getElementById('txtLat').value=event.latLng.lat();
document.getElementById('txtLng').value=event.latLng.lng();
marker= new google.maps.Marker({
position: event.latLng,
map: map,
title: 'pune'
});
//creting info window instance
var infowindow = new google.maps.InfoWindow({
content: 'selected location'
});
//adding pointer click event to open infowindow
google.maps.event.addListener(marker, 'click', function() {
infowindow.open(map,marker);
});
});
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
</head>

<table cellpadding="0" cellspacing="0">
<tr><td colspan=3><div id="map_canvas" style="background-color: #ffffff"></div></td></tr>
<tr><td><input type="text" id="txtLat" name="txtLat"style="width:150px"></td>
<td><input type="text" id="txtLng" name="txtLng"style="width:150px"></td></tr>
</table></form>
</html>`

关于javascript - 将 Google map 标记保存到数据库,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/18094873/

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