Magic-API MCP Server

--- title: "异步调用" date: "2022-01-30T10:10:17.000Z" permalink: "/pages/base/async/" --- # 普通方法 // 使用async关键字，会启动一个线程去执行，返回Future，并不等待结果继续执行后续代码 var user1 = async db.select("select * from sys_user where id = 1"); var user2 = async db.select("select * from sys_user where id = 2"); // 调用get方法表示阻塞等待获取结果 return [user1.get(),user2.get()]; # lambda var list = []; /* var selectUser = (userId)=>db.select("select * from sys_user where id = #{userId}"); for(index in range(1,10)){ list.add(async selectUser(index)); } */ for(index in range(1,10)){ // 当异步中使用外部变量时，为了确保线程安全的变量，可以将其放在形参中 list.add(async (index)=>db.select("select * from sys_user where id = #{index}")); } // 以上两种方式都可以 return list.map(item=>item.get());