4、中间件的配置

1、通用性中间件

1-1 app/middleware

module.exports = () => {
    return async function(ctx,next){
        console.log(1);
        await next()
    }
}

1-2 配置中间件config/config.default.js

  config.middleware = ['auth'];

2、中间件的局部匹配

2-1 config/config.default.js

config.middleware = ['auth','test'];
  // 让test中间件只匹配music
config.test = {
  match:"/music",
  title:"中间件"
}
tips:test中间件只会匹配music路由

3、配置跨域

module.exports = () => {
    return async function(ctx,next){
        ctx.set("Access-Control-Allow-Origin","*")
        await next()
    }
}
config.middleware = ['auth','test','cors'];