跨域配置

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2023-12-01

文档：https://www.npmjs.com/package/egg-cors

安装：npm i egg-cors --save

配置插件

// {app_root}/config/plugin.js
exports.cors = {
enable: true,
package: 'egg-cors',
};

config/config.default.js 目录下配置

config.security = {
  // 关闭 csrf
  csrf: {
    enable: false,
  },
   // 跨域白名单
  domainWhiteList: [ 'http://localhost:3000' ],
};
// 允许跨域的方法
config.cors = {
  origin: '*',
  allowMethods: 'GET, PUT, POST, DELETE, PATCH'
};

egg-cors 插件基于 @koa/CORS。

egg-cors works internally with egg-security. By defining the property of domainWhiteList on object security, you have successfully informed the framework to whitelist the passed domains.

When you make a request from client side, egg should return an Access-Control-Allow-Origin response header with the domain that you passed in along with the payload and status code 200.

exports.security = {
  domainWhiteList: [ 'http://localhost:4200' ],
};

Configuration

Support all configurations in @koa/cors.

// {app_root}/config/config.default.js
exports.cors = {
  // {string|Function} origin: '*',
  // {string|Array} allowMethods: 'GET,HEAD,PUT,POST,DELETE,PATCH'
};

If the origin is set, the plugin will follow it to set the Access-Control-Allow-Origin and ignore the security.domainWhiteList. Otherwise, the security.domainWhiteList which is default will take effect as described above.

Security

当安全插件启用时，只有在安全域列表支持 CORS 跨域。