CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
时间: 2023-08-27 19:17:07 浏览: 108
回答: 当出现"CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource."的错误信息时,表示在请求的资源中没有包含'Access-Control-Allow-Origin'头部字段。这是由CORS(跨域资源共享)政策引起的。CORS是一种机制,用于控制在跨域请求中哪些资源可以被访问。它通过在响应头中添加'Access-Control-Allow-Origin'字段来指示允许访问的来源。如果请求的资源没有设置该头部字段,浏览器会阻止访问该资源并返回这个错误信息。
要解决这个问题,你可以在服务器端配置响应头中添加'Access-Control-Allow-Origin'字段,并设置允许访问的来源。例如,将该字段设置为'*'表示允许所有来源访问该资源。如果你控制不了服务器端,你可以尝试使用代理服务器来转发请求,或者使用JSONP等其他跨域请求的方法。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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