在节点JS服务器中使用提取请求时,它会接收到身体为空白
我正在节点JS中的用户登录系统工作,并正在向服务器提出发布请求。
let data = {
username: "John Doe",
password: "123abc",
}
let options = {
method: 'POST',
headers: {
"Content-type": "application/json"
},
body: JSON.stringify(data),
}
fetch('/verify-login', options).then(function(r) {
return r.text();
}).then(function(dat) {
if (dat == 'n') {
document.getElementById('login-fail').innerHTML = 'User name or password is incorrect!';
} else {
console.log('Login Success');
}
});
服务器端代码:
const express = require('express');
const port = 80;
const bodyParser = require("body-parser");
const fs = require('fs');
var app = express();
app.use(bodyParser.urlencoded({extended: true}));
app.use(bodyParser.json());
const cors = require("cors");
app.use(cors());
app.post('/verify-login', async function(q, r) {
let dat = await q.body; //<-- Body is just {} not what the fetch request sent
//do account check stuff with dat
if (success) {
r.send('y');
} else {
r.send('n');
}
});
app.listen(port, function() {
console.log("Started application on port %d", port);
});
此问题是在我接收请求时在服务器端,将带有'{}'返回正文。有人知道为什么会发生这种情况以及如何解决吗?
I was working on a user login system in Node JS and was making a POST request to the server like this.
let data = {
username: "John Doe",
password: "123abc",
}
let options = {
method: 'POST',
headers: {
"Content-type": "application/json"
},
body: JSON.stringify(data),
}
fetch('/verify-login', options).then(function(r) {
return r.text();
}).then(function(dat) {
if (dat == 'n') {
document.getElementById('login-fail').innerHTML = 'User name or password is incorrect!';
} else {
console.log('Login Success');
}
});
Server Side code:
const express = require('express');
const port = 80;
const bodyParser = require("body-parser");
const fs = require('fs');
var app = express();
app.use(bodyParser.urlencoded({extended: true}));
app.use(bodyParser.json());
const cors = require("cors");
app.use(cors());
app.post('/verify-login', async function(q, r) {
let dat = await q.body; //<-- Body is just {} not what the fetch request sent
//do account check stuff with dat
if (success) {
r.send('y');
} else {
r.send('n');
}
});
app.listen(port, function() {
console.log("Started application on port %d", port);
});
This issue is that on the server side when I receive the request, the body is returned with '{}'. Does anybody know why this is happening and how I can fix it?
如果你对这篇内容有疑问,欢迎到本站社区发帖提问 参与讨论,获取更多帮助,或者扫码二维码加入 Web 技术交流群。

绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱,如果其他用户或者作者回复了您的评论,将不能在第一时间通知您!
发布评论
评论(1)
您可以通过
body
选项将各种数据类型传递给fetch
。如果您传递了无法识别的东西,它将其转换为字符串并发送。
将普通的对象转换为字符串并不能为您提供任何有用的东西。
您说您正在发送JSON(使用
content-type
标题。因此,您需要实际发送JSON。There are various data types you can pass to
fetch
through thebody
option.If you pass something it doesn't recognise, it converts it to a string and sends that.
Converting a plain object to a string doesn't give you anything useful.
You said you were sending JSON (with the
Content-Type
header. So you need to actually send JSON.