Question

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我正在开发node.js表达自定义API项目。目前我在尝试推送数据时遇到问题...

这是我的代码：

module.exports = function(config, steamClient, csgo, database, teamspeakClient, router) {
var async = require('async'),
apicache = require('apicache'),
cache = apicache.middleware,
mysql = require('mysql');

async.waterfall([
    function(callback) {
        router.get('/CsgoUser/requestPlayersProfile/v1/:steamids', function(req, res) {
            var steamids = req.params.steamids.split(',');
            var csgo_data = [];
            steamClient.getPersonas(steamids, function(resp) {
                Object.keys(resp).forEach(function (steamid){
                    if (!steamClient.myFriends.hasOwnProperty(steamid)) {
                        if (resp[steamid].game_played_app_id == 730) {
                            csgo.requestPlayersProfile(steamid, function(result) {
                                console.log(result);
                                csgo_data.push(csgo_data, {steamid: steamid, response: result});

                            });
                        }else{
                            csgo_data.push({steamid: steamid, response: steamid + " is not playing csgo"});
                        }                   
                    }else{
                        csgo_data.push({steamid: steamid, response: steamid + " Is not bot´s friend..."});
                    }
                });
                res.json({ success: true, code: 200, response: csgo_data });
            });


        });

    }
    ])};

结果如下：

{“success”：true，“code”：200，“response”：[{“steamid”：“76561198013250658”，“response”：“76561198013250658不是博特的朋友......”}，{“ steamid“：”76561198263874163“，”“”：“76561198263874163不是博特的朋友......”}，{“steamid”：“76561198156967342”，“回复”：“76561198156967342不是博特的朋友......” }]}

调用

时出现问题

csgo.requestPlayersProfile(steamid, function(result) {
console.log(result);
csgo_data.push(csgo_data, {steamid: steamid, response: result});});

console.log的输出数据（例如：{“ID”：“hello”}）在终端上正确显示，但它没有被推送到csgo_data数组......

请尽量给我一个解释： - ）

Answer 1

至于我要避免这种类型的问题，试着在Promises上重写forEach(..)。像这样：

steamClient.getPersonas(steamids, function(resp) {
            Promise.all(Object.keys(resp).map(
              (steamid)=>new Promise((resolve)=>{
                  if (!steamClient.myFriends.hasOwnProperty(steamid)) {
                      if (resp[steamid].game_played_app_id == 730) {
                            csgo.requestPlayersProfile(steamid, (result)=> {
                              console.log(result);
                              resolve({steamid: steamid, response: result});
                            });
                      }else{
                          resolve({steamid: steamid, response: steamid + " is not playing csgo"});
                      }                   
                  }else{
                      resolve({steamid: steamid, response: steamid + " Is not bot´s friend..."});
                  }
                })
             )  
           ).then((csgo_data)=>
            res.json({ success: true, code: 200, response: csgo_data })
           );
});

Answer 2

这是我的Promisified版本：

// build Promise from steamid
function getData(steamid) {
  return new Promise((resolve, reject) => {
    var data = {
      steamid: steamid,
      response: steamid + " Is not bot's friend..."
    };
    if (!steamClient.myFriends.hasOwnProperty(steamid)) resolve(data);
    else if (resp[steamid].game_played_app_id != 730) {
      data.response = steamid + " is not playing csgo";
      resolve(data);
    } else {
      csgo.requestPlayersProfile(steamid, function(result) {
        console.log(result);
        data.response = result;
        resolve(data);
      });
    }
  });
}

// build array of promises and pass to Promise.all()
Promise.all(Object.keys(resp).map(steamid => getData(steamid)))
  .then(data => {
    res.json({
      success: true,
      code: 200,
      response: csgo_data
    });
  });

无法将正确推送的内容输出到node.js

2 个答案: