has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested

has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. If an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled.

搭建项目 springboot + vue.js 报了这个错

解决办法

在controller层加一个注解

@CrossOrigin

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