使用Node.js和Express进行POST时如何访问请求体? [英] How to access the request body when POSTing using Node.js and Express?
问题描述
我有以下Node.js代码:
I have the following Node.js code:
var express = require('express');
var app = express.createServer(express.logger());
app.use(express.bodyParser());
app.post('/', function(request, response) {
response.write(request.body.user);
response.end();
});
现在,如果我的帖子如下:
Now if I POST something like:
curl -d user=Someone -H Accept:application/json --url http://localhost:5000
我按预期得到某人
现在,如果我想获得完整的请求机构呢?我尝试使用 response.write(request.body)
,但Node.js会引发一个异常,称第一个参数必须是字符串或缓冲区进入一个无限循环,一个异常说发送后无法设置标题。;这也是真的,即使我做了 var reqBody = request.body;
然后写入 response.write(reqBody)
。
I get Someone
as expected. Now, what if I want to get the full request body? I tried doing response.write(request.body)
but Node.js throws an exception saying "first argument must be a string or Buffer" then goes to an "infinite loop" with an exception that says "Can't set headers after they are sent."; this also true even if I did var reqBody = request.body;
and then writing response.write(reqBody)
.
这里有什么问题?
此外,我只需获取原始请求,而不使用 express.bodyParser()
?
Also, can I just get the raw request without using express.bodyParser()
?
推荐答案
Express 4.0及以上版本:
$ npm install --save body-parser
然后在你的节点应用程序:
And then in your node app:
const bodyParser = require('body-parser');
app.use(bodyParser);
Express 3.0及更低版本:
尝试将其传递给您的cURL调用:
Express 3.0 and below:
Try passing this in your cURL call:
- 标题Content-Type:application / json
,确保您的数据是JSON格式:
and making sure your data is in JSON format:
{user:someone}
此外,您可以在node.js代码中使用console.dir查看对象内的数据,如下例所示:
Also, you can use console.dir in your node.js code to see the data inside the object as in the following example:
var express = require('express');
var app = express.createServer();
app.use(express.bodyParser());
app.post('/', function(req, res){
console.dir(req.body);
res.send("test");
});
app.listen(3000);
这个其他问题也可能有帮助:如何在express node.js中发送JSON请求?
This other question might also help: How to receive JSON in express node.js POST request?
如果您不想使用bodyParser,请查看以下其他问题: https://stackoverflow.com/a / 9920700/446681
If you don't want to use the bodyParser check out this other question: https://stackoverflow.com/a/9920700/446681
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