Ajax cross-domain request COOKIE cannot be brought with the perfect solution

This article mainly introduces the solution to the problem that COOKIE cannot be brought with Ajax cross-domain request. Friends who are interested in ajax can refer to the perfect solution to the problem that COOKIE cannot be brought with Ajax cross-domain request

1. Native ajax request method:

1 var xhr = new XMLHttpRequest();

2 xhr.open("POST", "http: //xxxx.com/demo/b/index.php", true);

3 xhr.withCredentials = true; //Supports sending cookies across domains

4 xhr.send() ;

2. jquery’s ajax post method request:

$.ajax({
    type: "POST",
    url: "http://xxx.com/api/test",
    dataType: 'json',
　　　　// 允许携带证书
    xhrFields: {
       withCredentials: true
    },
　　　　// 允许跨域
    crossDomain: true,
    success:function(){
    },
    error:function(){
  }
})

3. Server-side settings:

header("Access-Control-Allow-Credentials: true");
header("Access-Control-Allow-Origin: http://www.xxx.com");

The above is the perfect solution that the editor introduces to you when Ajax cross-domain request COOKIE cannot be brought. I hope it will be helpful to everyone! !

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