ajax fetch获取不到数据提示需要跨域（肯定没有跨域）

Question

http://aabb:8088/Customer/index 请求 http://aabb:8088/Service/

$.ajax({
    url:'http://aabb:8088/Service/',
    type:'GET',
    success:function(data){
        console.log(data)
    }
})

XMLHttpRequest cannot load http://aabb:8088/Service/. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://aabb:8088' is therefore not allowed access.

请求的url换成/Service/就正常了，请问这是为什么？

Answer 1

因为 http://aabb:8088/Service/ 与 http://aabb:8088 是两个不同的域名

Answer 2

协议 域名 端口 三个都一样呀

Answer 3

应该是你服务器设置的问题