blocks|key|789437|text|如果你想做的就是遵循重定向，但仍然想使用内置的HTTP和HTTPS模块，我建议你使用https://github.com/follow-redirects/follow-redirects。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|789438|yarn+add+follow-redirects
npm+install+follow-redirects|code-block|syntax|javascript|789439|你所需要做的就是替换：|789440|var+http+=+require('http');|789441|使用|789442|var+http+=+require('follow-redirects').http;|789443|..。你的所有请求都会自动跟随重定向。|789444|使用TypeScript，您还可以安装类型|789445|npm+install+@types/follow-redirects|789446|然后使用|789447|import+{+http,+https+}+from+'follow-redirects';|789448|披露:这个模块是我写的。|789449|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/follow-redirects/follow-redirects^0|16|1G|0|0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1A|8|@]|9|@$A|1B|B|1C|1|1D]]|C|$]]|$1|D|3|E|5|F|7|1E|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|1F|8|@]|9|@]|C|$]]|$1|K|3|L|5|F|7|1G|8|@]|9|@]|C|$G|H]]|$1|M|3|N|5|6|7|1H|8|@]|9|@]|C|$]]|$1|O|3|P|5|F|7|1I|8|@]|9|@]|C|$G|H]]|$1|Q|3|R|5|6|7|1J|8|@]|9|@]|C|$]]|$1|S|3|T|5|6|7|1K|8|@]|9|@]|C|$]]|$1|U|3|V|5|F|7|1L|8|@]|9|@]|C|$G|H]]|$1|W|3|X|5|6|7|1M|8|@]|9|@]|C|$]]|$1|Y|3|Z|5|F|7|1N|8|@]|9|@]|C|$G|H]]|$1|10|3|11|5|6|7|1O|8|@]|9|@]|C|$]]|$1|12|3|-4|5|6|7|1P|8|@]|9|@]|C|$]]]|13|$14|$5|15|16|17|C|$18|19]]]]

If all you want to do is follow redirects but still want to use the built-in HTTP and HTTPS modules, I suggest you use <a href="https://github.com/follow-redirects/follow-redirects" rel="noreferrer">https://github.com/follow-redirects/follow-redirects</a>.

<pre><code>yarn add follow-redirects
npm install follow-redirects
</code></pre>

All you need to do is replace:

<pre><code>var http = require('http');
</code></pre>

with

<pre><code>var http = require('follow-redirects').http;
</code></pre>

... and all your requests will automatically follow redirects.

With TypeScript you can also install the types

<pre><code>npm install @types/follow-redirects
</code></pre>

and then use 

<pre><code>import { http, https } from 'follow-redirects';
</code></pre>

Disclosure: I wrote this module.

blocks|key|573438|text|如果您有https服务器，请将url更改为使用https://协议。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|573439|我在这个问题上也遇到了类似的问题。我的url有http://协议，我想发出一个POST请求，但服务器想要将它重定向到https。发生的情况是，原来是节点http行为在GET方法中发送重定向请求(next)，但事实并非如此。|573440|我所做的是将我的url更改为https://协议，并且它起作用了。|573441|entityMap^0|4|5|N|8|0|N|7|13|4|1M|5|2B|3|0|E|8|0^^$0|@$1|2|3|4|5|6|7|L|8|@$9|M|A|N|B|C]|$9|O|A|P|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Q|8|@$9|R|A|S|B|C]|$9|T|A|U|B|C]|$9|V|A|W|B|C]|$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|Z|8|@$9|10|A|11|B|C]]|D|@]|E|$]]|$1|J|3|-4|5|6|7|12|8|@]|D|@]|E|$]]]|K|$]]

If you have <code>https</code> server, change your url to use <code>https://</code> protocol.

I got into similar issue with this one. My url has <code>http://</code> protocol and I want to make a <code>POST</code> request, but the server wants to redirect it to <code>https</code>. What happen is that, turns out to be node http behavior sends the redirect request (next) in <code>GET</code> method which is not the case.

What I did is to change my url to <code>https://</code> protocol and it works.

blocks|key|573478|text|基于response.headers.location发出另一个请求|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|573479|++++++const+request+=+function(url)+{
++++++++lib.get(url,+(response)+=>+{
++++++++++var+body+=+[];
++++++++++if+(response.statusCode+==+302)+{
++++++++++++body+=+[];
++++++++++++request(response.headers.location);
++++++++++}+else+{
++++++++++++response.on("data",+/*...*/);
++++++++++++response.on("end",+/*...*/);
++++++++++};
++++++++}+).on("error",+/*...*/);
++++++};
++++++request(url);|code-block|syntax|javascript|573480|entityMap^0|2|P|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

Make another request based on <code>response.headers.location</code>:

<pre><code> const request = function(url) {
 lib.get(url, (response) =&gt; {
 var body = [];
 if (response.statusCode == 302) {
 body = [];
 request(response.headers.location);
 } else {
 response.on("data", /*...*/);
 response.on("end", /*...*/);
 };
 } ).on("error", /*...*/);
 };
 request(url);
</code></pre>

blocks|key|573523|text|下面是我用来获取具有重定向的url的函数：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|573524|const+http+=+require('http');
const+url+=+require('url');

function+get({path,+host},+callback)+{
++++http.get({
++++++++path,
++++++++host
++++},+function(response)+{
++++++++if+(response.headers.location)+{++++
++++++++++++var+loc+=+response.headers.location;
++++++++++++if+(loc.match(/%5Ehttp/))+{
++++++++++++++++loc+=+new+Url(loc);
++++++++++++++++host+=+loc.host;
++++++++++++++++path+=+loc.path;
++++++++++++}+else+{
++++++++++++++++path+=+loc;
++++++++++++}
++++++++++++get({host,+path},+callback);
++++++++}+else+{
++++++++++++callback(response);
++++++++}
++++});
}|code-block|syntax|javascript|573525|它的工作原理与http.get相同，但遵循重定向。|573526|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Here is function I use to fetch the url that have redirect:

<pre><code>const http = require('http');
const url = require('url');

function get({path, host}, callback) {
 http.get({
 path,
 host
 }, function(response) {
 if (response.headers.location) { 
 var loc = response.headers.location;
 if (loc.match(/^http/)) {
 loc = new Url(loc);
 host = loc.host;
 path = loc.path;
 } else {
 path = loc;
 }
 get({host, path}, callback);
 } else {
 callback(response);
 }
 });
}
</code></pre>

it work the same as http.get but follow redirect.

blocks|key|789750|text|这是我使用普通节点下载JSON的(递归)方法，不需要包。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|789751|import+https+from+"https";

function+get(url,+resolve,+reject)+{
++https.get(url,+(res)+=>+{
++++//+if+any+other+status+codes+are+returned,+those+needed+to+be+added+here
++++if(res.statusCode+===+301+%7C%7C+res.statusCode+===+302)+{
++++++return+get(res.headers.location,+resolve,+reject)
++++}

++++let+body+=+[];

++++res.on("data",+(chunk)+=>+{
++++++body.push(chunk);
++++});

++++res.on("end",+()+=>+{
++++++try+{
++++++++//+remove+JSON.parse(...)+for+plain+data
++++++++resolve(JSON.parse(Buffer.concat(body).toString()));
++++++}+catch+(err)+{
++++++++reject(err);
++++++}
++++});
++});
}

async+function+getData(url)+{
++return+new+Promise((resolve,+reject)+=>+get(url,+resolve,+reject));
}

//+call
getData("some-url-with-redirect").then((r)+=>+console.log(r));|code-block|syntax|javascript|789752|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Here is my (recursive) approach to download JSON with plain node, no packages required.
<pre><code>import https from &quot;https&quot;;

function get(url, resolve, reject) {
 https.get(url, (res) =&gt; {
 // if any other status codes are returned, those needed to be added here
 if(res.statusCode === 301 || res.statusCode === 302) {
 return get(res.headers.location, resolve, reject)
 }

 let body = [];

 res.on(&quot;data&quot;, (chunk) =&gt; {
 body.push(chunk);
 });

 res.on(&quot;end&quot;, () =&gt; {
 try {
 // remove JSON.parse(...) for plain data
 resolve(JSON.parse(Buffer.concat(body).toString()));
 } catch (err) {
 reject(err);
 }
 });
 });
}

async function getData(url) {
 return new Promise((resolve, reject) =&gt; get(url, resolve, reject));
}

// call
getData(&quot;some-url-with-redirect&quot;).then((r) =&gt; console.log(r));

</code></pre>

I want to open a page up in node and process the contents in my application. Something like this seems to work well:

<pre><code>var opts = {host: host, path:pathname, port: 80};
http.get(opts, function(res) {
 var page = '';
 res.on('data', function (chunk) {
 page += chunk;
 });
 res.on('end', function() {
 // process page
 });
</code></pre>

This doesn't work, however, if the page returns an 301/302 redirect. How would I do that in a reusable way in case there are multiple redirects? Is there a wrapper module on top of the http to more easily handle processing http responses from a node application?

How do you follow an HTTP Redirect in Node.js?

TypeScript

服务器

JSON

我想在node中打开一个页面，并处理应用程序中的内容。像这样的东西似乎工作得很好：var opts = {host: host, path:pathname, port: 80};http.get(opts, function(res) {  var page = '';  res.on('data', functio...

问如何在Node.js中跟踪HTTP重定向？
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