使用Vue配合Express框架构建SPA应用遇到的"Access-Control-Allow-Origin"问题

问题:Access-Control-Allow-Origin Access to XMLHttpRequest at 'http://127.0.0.1:3000/api/xxx?page=1' from origin 'http://localhost:8080' has been blocked by CORS policy: No 'Access-Control-Allow-Origin

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