NodeJS请求:如何在管道时获得`response.statusCode`？

Question

对不起伙计们,我有点迷茫.如何response.statusCode在管道时使用console.log ？

var express = require('express');
var path = require('path');
var request = require('request');
var fs = require('fs');
var app = express();
var port = 8000;

var destination = fs.createWriteStream('./downloads/google.html');
var url = "http://www.google.com/";
request(url).pipe(destination)
.on("finish", function() {
    console.log("done");
    console.log(response.statusCode); // <<<<<<<<<<<<<<<<<<<<<<<<<<<< this
})
.on("error", function(err){
  console.log(err);
});

app.listen(port, function(){
console.log('running server on ' + port);
});

Answer 1

你需要从中捕获response事件request.它不会出现在finished管道中.您还应该考虑在管道之前捕获错误.这是您将捕获网络错误的地方.管道之后你会发现文件错误.

request(url)
.on('response', function(response) {
    console.log(response.statusCode) // <--- Here 200
})
.on("error", function(err){
    console.log("Problem reaching URL: ", err);
 })
.pipe(destination)
.on("finish", function(response) {
    console.log("done");
})
.on("error", function(err){
    console.log("Problem writing file: ", err);
});