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Access to XMLHttpRequest at 'xxx' from origin 'xxx' has been blocked by CORS policy: No 'Access-Cont
时间 2021-01-06
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标题上写不上了,直接观看下面的截图。 1.现象 2.分析原因 屏幕前的你是不是也遇到了这样的问题?你知道为什么会出现这样的问题吗?就是因为跨域引起的问题。 还不知道什么是跨域?简单来讲:就是跨域不同的域名进行访问。由于在不同域名间访问的不安全性,所以有了跨域的诞生。 具体概念如下:只要协议、域名、端口有任何一个不同,都被当作是不同的域。为什么会产生跨域这个问题呢,要是随便引用外部文件,不同标签下的
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