Javascript 为什么 express-js 不设置 Content-Type 标头？
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Why isn't express-js setting the Content-Type header?
提问by Kit Sunde
I have the following:
我有以下几点：
var express = require('express'),
app = express.createServer();
app.get("/offline.manifest", function(req, res){
res.contentType("text/cache-manifest");
res.end("CACHE MANIFEST");
});
app.listen(8561);
The network tab in Chrome says it's text/plain. Why isn't it setting the header?
Chrome 中的网络选项卡说它是text/plain. 为什么不设置标题？
The code above works, my problems were caused by a linking to an old version of express-js
上面的代码有效，我的问题是由链接到旧版本的 express-js 引起的
回答by Ray Hulha
res.type('json')works too now and as others have said, you can simply useres.json({your: 'object'})
res.type('json')现在也可以使用，正如其他人所说，您可以简单地使用res.json({your: 'object'})
回答by schaermu
Try this code:
试试这个代码：
var express = require('express'),
app = express.createServer();
app.get("/offline.manifest", function(req, res){
res.header("Content-Type", "text/cache-manifest");
res.end("CACHE MANIFEST");
});
app.listen(8561);
(I'm assuming you are using the latest release of express, 2.0.0)
（我假设您使用的是最新版本的 express，2.0.0）
UPDATE:I just did a quick test using Firefox 3.6.x and Live HTTP Headers. This is the addons output:
更新：我刚刚使用 Firefox 3.6.x 和 Live HTTP Headers 做了一个快速测试。这是插件输出：
HTTP/1.1 200 OK
X-Powered-By: Express
Content-Type: text/cache-manifest
Connection: keep-alive
Transfer-Encoding: chunked
Make sure you clear your cache before trying.
在尝试之前，请确保清除缓存。
回答by danday74
instead of res.send()
代替 res.send()
use res.json()which automatically sets the content-type to application/json
使用res.json()它自动将内容类型设置为application/json
