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我想做一個谷歌地圖,它允許用戶點擊地圖並將點保存爲起點或終點。點擊一個點後,會看到一個infowindow。我將google地圖座標更改爲我自己定義的座標。我已經在座標中建立了一個有建築物的數據庫。 也就是說,像這樣的數據庫 (x Y樓)(1,2號塔1)(1,3號塔2)使用ajax將javascript中的變量傳遞給sql server
我想傳遞座標在sql數據庫中搜索並返回建築物。並在文本框中顯示建築物名稱。但是,看起來回報並不成功。請幫幫我。我在互聯網上搜索了很長時間。
storelatlng.php
require_once("Connections/fees0_7548734_cumap.php");
$x = $_GET['x'];
$y = $_GET['y'];
$data = mysql_query("SELECT Bname FROM Coordinate WHERE X=2 AND Y=58") or die(mysql_error());
$info = mysql_fetch_array($data);
$Bname = $info['Bname'];
echo $Bname;
mapfunction.php
var map;
var Bname="";
function storelatlng(){
var y = document.getElementById("Latitude").value;
var x = document.getElementById("Longitude").value
var getVars = "?y="+y+"&x="+x;
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
var request=new XMLHttpRequest();
}
else
{// code for IE6, IE5
var request=new ActiveXObject("Microsoft.XMLHTTP");
}
request.open('GET','storelatlng.php'+getVars,true);
request.onreadystatechange = function(){
if(request.readyState == 4){
var xmlDoc = request.responseText;
document.getElementById("frmLat").value = xmlDoc;
}
}
request.send(null);
return false;
}
function initialize() {
if (GBrowserIsCompatible()) {
map = new GMap2(document.getElementById("map_canvas"));
map.setCenter(new GLatLng(22.419161, 114.207559), 17);
GEvent.addListener(map,"click",
function(overlay,latlng){
var setLat = latlng.lat();
var setLon = latlng.lng();
setLat = Math.floor((Math.floor(setLat*100000)-2241187)/20);
setLon = Math.floor((Math.floor(setLon*100000)-11420020)/20);
//y
document.getElementById("frmLat").value = setLat;
//x
document.getElementById("frmLon").value = setLon;
var inputForm = document.createElement("form");
inputForm.setAttribute("action","");
inputForm.onsubmit = function(){storelatlng();
return false;
};
inputForm.innerHTML = '<fieldset style = "width:200px;">'
+ '<legend> Mark Point </legend>'
+ 'Please choose it '+Bname+' your starting or ending point.'+'<p></p>'
+ '<label><input type="radio" name="choice" value="0" id="choice_s" />Start</label>'
+ '<label><input type="radio" name="choice" value="1" id="choice_e" />End</label>'
+ '<input type="submit" value="Save"/>'
+ '<input type="hidden" id="Longtitude" value="'+setLon+'"/>'
+ '<input type="hidden" id="Latitude" value="'+setLat+'"/>';
map.openInfoWindow(latlng,inputForm);
});
<?php
您是否追查問題發生的地點? 'storelatlng.php'是否收到有效的經緯度?另外,爲什麼你在'storelatlng.php'中對'X = 2和Y = 58'進行硬編碼? – dgilland 2011-03-31 03:49:01