如何将地理位置输出导出到日志文件？
[英]how can i export the geolocation output to log file?
问题描述
I have this code it displays the geolocation (Longitude: xx Latitude: xx Accuracy: xxx) ..how can I output the results into a log file log.txt when any body visit the url 
我有这段代码，它显示地理位置（经度：xx纬度：xx精度：xxx）..当任何人访问url时，如何将结果输出到日志文件log.txt中
<!-- <xml version="1.0" encoding="utf-8"> -->
<!DOCTYPE html PUBLIC "-//WAPFORUM//DTD XHTML Mobile 1.0//EN" "http://www.wapforum.org/DTD/xhtml-mobile10.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Geolocation API Demo</title>
<meta content="width=device-width; initial-scale=1.0; maximum-scale=1.0; user-scalable=0;" name="viewport"/>
<script>
function successHandler(location) {
var message = document.getElementById("message"), html = [];
html.push("<img width='512' height='512' src='http://maps.google.com/maps/api/staticmap?center=", location.coords.latitude, ",", location.coords.longitude, "&markers=size:small|color:blue|", location.coords.latitude, ",", location.coords.longitude, "&zoom=16&size=512x512&sensor=false' />");
html.push("<p>Longitude: ", location.coords.longitude, "</p>");
html.push("<p>Latitude: ", location.coords.latitude, "</p>");
html.push("<p>Accuracy: ", location.coords.accuracy, " meters</p>");
message.innerHTML = html.join("");
}
function errorHandler(error) {
alert('Attempt to get location failed: ' + error.message);
}
navigator.geolocation.getCurrentPosition(successHandler, errorHandler);
</script>
</head>
<body>
<div id="message">Location unknown</div>
</body>
</html>
3 个解决方案
解决方案1
0 2015-07-14 13:50:28
For this you will need a server side that can store data locally on its system. 为此，您将需要一个服务器端，可以在其系统上本地存储数据。 I would suggest that you use PHP or whatever other server side language you know. 我建议您使用PHP或您知道的任何其他服务器端语言。
You will write a program that will receive an object, or perhaps just 2 variables and will store it into a file.txt. 您将编写一个程序，该程序将接收一个对象，或者可能只是两个变量，并将其存储到file.txt中。
This should not be very hard, if you are confused you should look up JavaScript AJAX calls. 这应该不会很困难，如果您感到困惑，则应该查找JavaScript AJAX调用。
解决方案2
0 已采纳 2015-07-14 13:53:13
This is the javascript code which will send the data asynchronously to the server. 这是将代码异步发送到服务器的javascript代码。
function successHandler(location) {
var message = document.getElementById("message"), html = [];
html.push("<img width='512' height='512' src='http://maps.google.com/maps/api/staticmap?center=", location.coords.latitude, ",", location.coords.longitude, "&markers=size:small|color:blue|", location.coords.latitude, ",", location.coords.longitude, "&zoom=16&size=512x512&sensor=false' />");
html.push("<p>Longitude: ", location.coords.longitude, "</p>");
html.push("<p>Latitude: ", location.coords.latitude, "</p>");
html.push("<p>Accuracy: ", location.coords.accuracy, " meters</p>");
message.innerHTML = html.join("");
//Send this to server
var xmlhttp;
if (window.XMLHttpRequest) { // code for IE7+, Firefox, Chrome, Opera
xmlhttp=new XMLHttpRequest();
} else { // code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.open("POST","script.php",true);
xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8");
xmlhttp.send("latitude="+location.coords.latitude+"&longitude="+location.coords.longitude+"&accuracy="+location.coords.accuracy); // pass data, assuming lat, long, acc are respective js variables
}
function errorHandler(error) {
alert('Attempt to get location failed: ' + error.message);
}
navigator.geolocation.getCurrentPosition(successHandler, errorHandler);
Retrieve the data on server side and save with below PHP code ( script.php ) 在服务器端检索数据，并使用下面的PHP代码（ script.php ）保存
<?php
$latitude = $_POST['latitude'];
$longitude = $_POST['longitude'];
$accuracy = $_POST['accuracy'];
$string = $latitude." - ".$longitude." | ".$accuracy; // this will turn into 00000 - 00000 | 0.25
$myfile = file_put_contents('log.txt', $string.PHP_EOL, FILE_APPEND);
?>
解决方案3
0 2015-07-14 14:20:02
For java here is the code. 对于Java，这是代码。
if (window.XMLHttpRequest) {
// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp = new XMLHttpRequest();
} else {
// code for IE6, IE5
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange = function() {
if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
alert(xmlhttp.responseText);
}
}
xmlhttp.open("POST","file.jsp?latitude="+location.coords.latitude+"&longitude="+location.coords.longitude+"&accuracy="+location.coords.accuracy,true);
xmlhttp.send();
In Jsp (file.jsp) write. 在Jsp（file.jsp）中编写。 Better to write java code in servlets not in JSP. 最好在servlet中而不是在JSP中编写Java代码。
java.io.File file = new java.io.File("d://filename.log");
java.io.FileWriter writer = new java.io.FileWriter(file);
writer.write(request.getParameter("latitude")+" "+request.getParameter("longitude")+" "+request.getParameter("accuracy"));
writer.flush();
writer.close();
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