node.js - 如何在 typeorm 中的异步等待中发布请求

Question

我想发布请求并获取数据例如

async saveUser(user: any) {
        var headers = {
            "Content-Type": "application/json"
        }
        var request = require('request');
        var res;
        var req = await request.post({ url: "http://localhost:3000/user/",json:true, body: user, headers: headers },await function(error,response,body){
            res=body;
            console.log("output from localhost 3000",res);
        });
        return  res;
    }

但我在 userController 的以下功能中使用它

 async saveUser(request:Request,response:response,next:NextFunction) {
        console.log("saving user");
        var user = await this.userService.saveUser(request.body);
        console.log(user);
        console.log("user saved");
    }

我得到这样的输出

saving user
undefined
user saved
output from localhost 3000 User{
id:10,
firstName:xyz,
lastName:qwe
}

如何等待 localhost 3000 完成其请求并向该 localhost 端口返回响应？

或者有没有其他解决方案。

Answer 1

尝试下面，这对我有用，只是你必须深入使用 Promise。通过使用 Promise，它将等到它从 localhost:3000/user 获得响应..

async saveUser(user: any) {
    var headers = {
        "Content-Type": "application/json"
    }
    var request = require('request');
    var options = {
        uri: "http://localhost:3000/user",
        body: user,
        headers: headers,
        json: true
    }
    return new Promise(function (resolve, reject) {
        request.post(options, function (err, resp, body) {
            console.log(resp.statusCode);
            if (err) {
                console.log(err.message);
                reject(err);
            } else {
                console.log(body);
                if(resp.statusCode==200){
                    resolve(body');
                }
                else{
                    resolve(body);
                }
            }
        });
    });
}