4 中间件的配置

一、通用型中间件

1-1 app/middleware/auth.js

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'];

二、中间件的局部匹配

config/config.default.js

config.middleware = ['auth'];
config.auth = {
  match:'/music'
}
# tips:auth中间件只会匹配music路由

三、 配置跨域中间件

1-1 app/middleware/cors.js

module.exports = ()=>{
    return async function(ctx,next){
        ctx.set("Access-Control-Allow-Origin","*")
        await next();
    }
}

1-2 config/config.default.js

config.middleware = ["cors"];