如何在Node.js中提取表单数据(form[method="post"])和从HTTP
POST`方法发送的文件上传?
我看了文档,在谷歌上搜索了一下,没有发现什么。
function (request, response) {
//request.post????
}
是否有一个库或一个黑客?
你可以使用[querystring
](https://nodejs.org/api/querystring.html#querystring_query_string)模块。
var qs = require('querystring');
function (request, response) {
if (request.method == 'POST') {
var body = '';
request.on('data', function (data) {
body += data;
// Too much POST data, kill the connection!
// 1e6 === 1 * Math.pow(10, 6) === 1 * 1000000 ~~~ 1MB
if (body.length > 1e6)
request.connection.destroy();
});
request.on('end', function () {
var post = qs.parse(body);
// use post['blah'], etc.
});
}
}
现在,例如,如果你有一个名称为 "年龄 "的 "输入 "字段,你可以使用变量 "post "访问它。
console.log(post.age);
如果你使用Express(Node.js的高性能、高等级网络开发),你可以做到这一点。
HTML:
<form method="post" action="/">
<input type="text" name="user[name]">
<input type="text" name="user[email]">
<input type="submit" value="Submit">
</form>
API客户端:
fetch('/', {
method: 'POST',
headers: {
'Content-Type': 'application/json'
},
body: JSON.stringify({
user: {
name: "John",
email: "[email protected]"
}
})
});
Node.js: (自Express v4.16.0起)
// Parse URL-encoded bodies (as sent by HTML forms)
app.use(express.urlencoded());
// Parse JSON bodies (as sent by API clients)
app.use(express.json());
// Access the parse results as request.body
app.post('/', function(request, response){
console.log(request.body.user.name);
console.log(request.body.user.email);
});
Node.js: (针对Express <4.16.0)
const bodyParser = require("body-parser");
/** bodyParser.urlencoded(options)
* Parses the text as URL encoded data (which is how browsers tend to send form data from regular forms set to POST)
* and exposes the resulting object (containing the keys and values) on req.body
*/
app.use(bodyParser.urlencoded({
extended: true
}));
/**bodyParser.json(options)
* Parses the text as JSON and exposes the resulting object on req.body.
*/
app.use(bodyParser.json());
app.post("/", function (req, res) {
console.log(req.body.user.name)
});