Thinkphpjs cross-origin problem and session-php Tutorial

The framework I used is ThinkPHP. I used ajax to send a message to the background (a cross-Origin error occurs, so I added the header (& #039; Access-Control-Allow-Origin: * & #039;), you need to verify the session, but I found that var_export ($ _ SESSION); is null: 1. in l... the framework used is ThinkPHP.
I used ajax to send a message to the background (a cross-Origin error occurs, so I added the header ('Access-Control-Allow-Origin :*');), the session needs to be verified, but I found that var_export ($ _ SESSION); is null.

Problem: 1. in http: // localhost/deno/index. php/Home/Index/personal.html is sent to http: // 127.0.0.1/deno/index. php/Home/item/delete.html is in a project. why is there a cross-origin problem?
2. how to obtain session data?

Reply content:

The framework used is ThinkPHP.
I used ajax to send a message to the background (a cross-Origin error occurs, so I added the header ('Access-Control-Allow-Origin :*');), the session needs to be verified, but I found that var_export ($ _ SESSION); is null.

Problem: 1. in http: // localhost/deno/index. php/Home/Index/personal.html is sent to http: // 127.0.0.1/deno/index. php/Home/item/delete.html is in a project. why is there a cross-origin problem?
2. how to obtain session data?

Replace 127.0.0.1 with localhost.

How can I solve the problem of sending sessionid across domains?