我正在尝试网络服务器和客户端..（混合应用程序！使用cordova）
但是 Access-Control-Allow-Origin 错误..所以我下载了 chrome 扩展程序 cors.. 但不起作用..
[服务器.js]
var app = require('express')();
var http = require('http').Server(app);
var cors = require('cors');
var io = require('socket.io')(http);
// io.set('origins','*:*');
io.on('connection', function(socket){
console.log('a user connected');
socket.on('weather_location', function(msg){
socket.emit('message', msg);
})
});
http.listen(80, function(){
console.log('listening on *:3737');
});
[索引.html]
<!DOCTYPE html>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta name="viewport" content="initial-scale=1.0, user-scalable=no">
<meta http-equiv="Access-Control-Allow-Origin" content="*">
<html>
<head>
<title>location_weather</title>
<script src="http://code.jquery.com/jquery-1.11.0.min.js"></script>
<script src="http://code.jquery.com/jquery-migrate-1.2.1.min.js"></script>
<!-- <script type='text/javascript' src='/socket.io/socket.io.js'></script> -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/socket.io/2.1.0/socket.io.slim.js"/>
<!-- <script type="text/javascript" src="./js/socket.io.js"/> -->
<script type="text/javascript" src="https://openapi.map.naver.com/openapi/v3/maps.js?clientId=irru1vaga0dOPnfgy29o&submodules=geocoder"></script>
<!-- <meta http-equiv="Content-Security-Policy" content="default-src 'self' data: gap: https://ssl.gstatic.com 'unsafe-eval'; style-src 'self' 'unsafe-inline'; media-src *; connect-src ws://example.com wss://example.com"> -->
</head>
<body>
<button id="weatherBtn" onclick="weather_location();">클릭</button>
</body>
</html>
<script>
var socket = io.connect('http://202.31.200.138:80');
//var socket = io();ttp
$(function (){
//var socket = io.connect('http://202.31.200.138:3330');
socket.on('message', function(data){
console.log(data);
alert(data);
});
});
function weather_location(){
alert("hello");
socket.emit('weather_location','message');
}
// function location_weather(){
// if(navigator.geolocation){
// navigator.geolocation.getCurrentPosition(function(position){
// alert("위도 : " + position.coords.latitude + "tt" + position.coords.longitude);
// }, function(error){
// console.error(error);
// },{
// enableHighAccuracy : false,
// maximumAge : 0,
// timeout : Infinity
// });
// socket.emit('weather_location',position.coords.latitude );
// } else {
// alert("GPS를 지원하지 않습니다.");
// }
// //return false;
// }
</script>
[error]
当请求的凭据模式为“include”时，响应中“Access-Control-Allow-Origin”标头的值不能是通配符“*”。因此，不允许访问来源“null”。 XMLHttpRequest 发起的请求的凭据模式由 withCredentials 属性控制。
请帮我...
