1.安装插件 npm install egg-cors --save 2.congfig>plugin目录配置: exports.cors = { enable: true, package: 'egg-cors' } 3.config>plugindefault目录配置: config.security = { csrf: { enable: false }, domainWhiteList:['*'], }; config.cors = { origin: '*', allowMethods: 'GET,HEAD,PUT,POST,DELETE,PATCH,OPTIONS' };