单击按钮提交时出现问题。在网站上找不到404错误和“无法发布/索引”。我在代码上有逻辑问题还是在语法上出现问题
我正在尝试将数字发回服务器以进行计算，但不知道导致我无法执行发布功能的错误在哪里。如果我上传的文件未完成，请从我那里获取需求文件。
app.component.html我需要在HTML文件中添加一些内容来链接server.ts吗？还有什么我需要检查的问题吗？
<!doctype html>
<html lang="en">
<head>
<Title>Calculator</Title>
<meta charset="utf-8">
<title>Myapp</title>
<base href="/">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="icon" type="image/x-icon" href="favicon.ico">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" />
</head>
<body>
<h1 align="center">Angular Calculator</h1>
<div class="container">
<div class="card">
<div class="card-body">
<form action="index" method="POST">
<input type="number" name="num1" class="form-control" placeholder="Number">
<input type="number" name="num2" class="form-control" placeholder="Number">
<select ng-model="operator" name="operator">
<option>+</option>
<option>*</option>
<option>-</option>
<option>/</option>
</select>
<button type="submit">Submit</button>
</form>
<p>Calculation Of the number is :{{ result }} </p>
</div>
</div>
</div>
</body>
</html>
server.ts文件这是默认情况下由npm生成的服务器文件，对于我首次测试加法功能，我不确定代码的语法是否有任何问题。
import 'zone.js/dist/zone-node';
import 'reflect-metadata';
import * as bodyParser from 'body-parser';
import * as express from 'express';
import {join} from 'path';
// Express server
const app = express();
const PORT = process.env.PORT || 4000;
const DIST_FOLDER = join(process.cwd(), 'dist/browser');
// * NOTE :: leave this as require() since this file is built Dynamically from webpack
const {AppServerModuleNgFactory, LAZY_MODULE_MAP, ngExpressEngine, provideModuleMap} = require('./dist/server/main');
// Our Universal express-engine (found @ https://github.com/angular/universal/tree/master/modules/express-engine)
app.engine('html', ngExpressEngine({
bootstrap: AppServerModuleNgFactory,
providers: [
provideModuleMap(LAZY_MODULE_MAP)
]
}));
app.set('view engine', 'html');
app.set('views', DIST_FOLDER);
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: true }));
// Example Express Rest API endpoints
// app.get('/api/**', (req, res) => { });
// Serve static files from /browser
app.get('*.*', express.static(DIST_FOLDER, {
maxAge: '1y'
}));
// All regular routes use the Universal engine
app.get('*', (req, res) => {
res.render('/app.component.html', { req });
});
app.get('*', (req, res) => {
res.status(404).send('data requests are not supported');
});
//have body-parser is a piece of express middleware that reads a form's
//input and stores it as a javascript object accessible through
//can not to include body-parser but not to get the raw request, your body and header are not in the root object of request parameter
app.post('/',(req, res) => {
//var num1 = req.body.operator
var result=req.body;
console.log(req.body);
var operator = req.body.operator
if (operator == "+")
{
res.render('/app.component.html', {
result: parseInt(req.body.num1) + parseInt(req.body.num2),
});
}
})
// Start up the Node server
app.listen(PORT, () => {
console.log(`Node Express server listening on http://localhost:${PORT}`);
});
以下行表示您要发布到/index：
<form action="index" method="POST">
要发布到快递服务（该服务托管在端口4000上，因此URL为http://localhost:4000），您必须在按钮上定义一个提交行为。检查this以供参考。
我认为问题是您不包括
'angular-route.js'
在您的客户端代码中
您无法发布索引<form action="index" method="POST">。
您需要服务器端文件。像：<form action="form_process.php" method="POST">