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[英]No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:8100' is therefore not allowed access
[英]— No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:8100' is therefore not allowed access
尝试从提供程序访问http:Localhost:9000/api/post
此错误
Failed to load http://127.0.0.1:8000/api/post: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:8100' is therefore not allowed access. is therefore not allowed access
任何人都知道什么是错的。
您的前端和后端位于不同的端口上,这意味着您的ajax请求受到跨源安全性的约束。
您需要通过添加在后端api(服务器端)进行更改
Access-Control-Allow-Origin:“*”;
根据你使用php,java或python等语言的响应头
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