AWS Lambda NodeJS HTTP請求，從API打印數據

Question

下面的代碼在Lambda中返回「有迴應：301」。我已經在php，python和Node中試過這段代碼。將此鏈接粘貼到瀏覽器中將返回JSON數據，如圖所示。如何獲得打印出相同數據的代碼？我需要最終將數據放入Mongo中。我可以讓php和python在本地打印數據，但不能在Lambda中打印。

我認爲它與the callback() shown here有關，我試圖實現它。

var http = require('http'); 
var url = 'http://www.alphavantage.co/query?function=TIME_SERIES_INTRADAY&symbol=MSFT&interval=1min&apikey=demo'; 
exports.handler = function (event, context) { 
http.get(url, function(res) { 
    console.log("Got response: " + res.statusCode); 

    res.on("data", function(chunk) { 
    console.log("BODY: " + chunk); 
    }); 
}).on('error', function(e) { 
    console.log("Got error: " + e.message); 
}); 
}; 

我更新的代碼：

var http = require('http'); 
var url = 'http://www.alphavantage.co/query?function=TIME_SERIES_INTRADAY&symbol=MSFT&interval=1min&apikey=demo'; 
exports.handler = function (event, context) { 
http.get(url, function(res) { 
     var data = ''; 
     res.on('data', (chunk) => { data += chunk; }); 
     res.on('end',() => { console.log("BODY: " + data); }); 
    }).on('error', (e) => { console.log("Got error: " + e.message);}); 
}; 

，並得到這樣的響應：

START RequestId: 19a21615-7d09-11e7-93cc-cb3212ad23c5 Version: $LATEST 2017-08-09T13:46:10.102Z 19a21615-7d09-11e7-93cc-cb3212ad23c5 BODY: END RequestId: 19a21615-7d09-11e7-93cc-cb3212ad23c5 REPORT RequestId: 19a21615-7d09-11e7-93cc-cb3212ad23c5 Duration: 277.04 ms Billed Duration: 300 ms  Memory Size: 128 MB Max Memory Used: 19 MB 

Answer 1

要想在塊接收的數據打印所有數據你需要聽'結束'事件，然後記錄它。嘗試在每個數據事件上附加塊，以及接收到的結束事件記錄所有數據。

var https = require('https'); 
var url = 'https://www.alphavantage.co/query?function=TIME_SERIES_INTRADAY&symbol=MSFT&interval=1min&apikey=demo'; 
exports.handler = function (event, context) { 
https.get(url, function(res) { 
    var data = ''; 
    res.on('data', (chunk) => { data += chunk; }); 
    res.on('end',() => { console.log("BODY: " + data); }); 
    }).on('error', (e) => { console.log("Got error: " + e.message);}); 
};