搜狐IP地址查询接口（默认GBK）：http://pv.sohu.com/cityjson
搜狐IP地址查询接口（可设置编码）：http://pv.sohu.com/cityjson?ie=utf-8
使用搜狐接口demo:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script src="../plugins/jQuery/jquery-1.12.4.min.js"></script>
<script src="http://pv.sohu.com/cityjson"></script>
</head>
<body>
<p id="ip"></p>
<script type="text/javascript">
$(function() {
$('#ip').html(returnCitySN["cip"]);
})
//获取城市ajax
$.ajax({
url: 'http://api.map.baidu.com/location/ip?ak=ia6HfFL660Bvh43exmH9LrI6',
type: 'POST',
dataType: 'jsonp',
success:function(data) {
$('#city').html(data.content.address_detail.province + "," + data.content.address_detail.city)
}
});
})
</script>
</body>
</html>