使用 Node.js 从 URL 读取内容
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Reading content from URL with Node.js
提问by Luke
I'm trying to read the content from a URL with Node.js but all I seem to get are a bunch of bytes. I'm obviously doing something wrong but I'm not sure what. This is the code I currently have:
我正在尝试使用 Node.js 从 URL 读取内容，但我似乎得到的只是一堆字节。我显然做错了什么，但我不确定是什么。这是我目前拥有的代码：
var http = require('http');
var client = http.createClient(80, "google.com");
request = client.request();
request.on('response', function( res ) {
res.on('data', function( data ) {
console.log( data );
} );
} );
request.end();
Any insight would be greatly appreciated.
任何见解将不胜感激。
回答by user896993
try using the on error event of the client to find the issue.
尝试使用客户端的 on error 事件来查找问题。
var http = require('http');
var options = {
host: 'google.com',
path: '/'
}
var request = http.request(options, function (res) {
var data = '';
res.on('data', function (chunk) {
data += chunk;
});
res.on('end', function () {
console.log(data);
});
});
request.on('error', function (e) {
console.log(e.message);
});
request.end();
回答by sidanmor
HTTP and HTTPS:
HTTP 和 HTTPS：
const getScript = (url) => {
return new Promise((resolve, reject) => {
const http = require('http'),
https = require('https');
let client = http;
if (url.toString().indexOf("https") === 0) {
client = https;
}
client.get(url, (resp) => {
let data = '';
// A chunk of data has been recieved.
resp.on('data', (chunk) => {
data += chunk;
});
// The whole response has been received. Print out the result.
resp.on('end', () => {
resolve(data);
});
}).on("error", (err) => {
reject(err);
});
});
};
(async (url) => {
console.log(await getScript(url));
})('https://sidanmor.com/');
回答by Mark Kahn
the data object is a buffer of bytes. Simply call .toString()to get human-readable code:
数据对象是一个字节缓冲区。只需调用.toString()即可获取人类可读的代码：
console.log( data.toString() );
reference: Node.js buffers
参考：Node.js 缓冲区
