javascript - 尝试访问快速路由时未找到 404 错误
问题描述
我使用 express js 和 mongdb 服务器运行 angular cli 生成的应用程序。运行 npm start 后,我可以访问路由到我的主页的http://localhost:3000,导航栏上的其他链接可以很好地控制路由,例如http:/ /localhost:3000/blackboard会在单击黑板按钮时加载。但是,当我尝试键入http:// localhost:3000/home的http://localhost:3000/blackboard时,它会以 Not found 响应。当我尝试重新加载页面时,它也会响应未找到。这是我的app.routing文件
import { NgModule } from '@angular/core';
import { RouterModule,Routes} from '@angular/router';
import { MenuComponent } from './menu.component';
import { HomeComponent } from './home/home.component';
import { BlackboardComponent } from './blackboard/blackboard.component';
import { AboutComponent } from './about/about.component';
import { FooterComponent } from './footer/footer.component';
import { BookComponent } from "./book/book.component";
import { BookDetailComponent } from "./book-detail/book-detail.component";
import {BookCreateComponent} from "./book-create/book-create.component";
import {BookEditComponent} from "./book-edit/book-edit.component";
const routes: Routes = [
{ path: '', redirectTo: '/home', pathMatch: 'full' },
{path: 'home', component: HomeComponent},
{ path: 'blackboard', component: BlackboardComponent },
{ path: 'about', component: AboutComponent },
{ path: 'books',component: BookComponent},
{ path: 'book-details/:id', component: BookDetailComponent},
{path: 'book-create',component: BookCreateComponent},
{ path: 'book-edit/:id', component: BookEditComponent},
];
@NgModule({
imports: [ RouterModule.forRoot(routes) ],
exports: [ RouterModule ]
})
export class AppRoutingModule {}
我通过 bin/www 运行我的服务器
#!/usr/bin/env node
/**
* Module dependencies.
*/
var app = require('../app');
var debug = require('debug')('mean-angular6:server');
var http = require('http');
/**
* Get port from environment and store in Express.
*/
var port = normalizePort(process.env.PORT || '3000');
app.set('port', port);
/**
* Create HTTP server.
*/
var server = http.createServer(app);
/**
* Listen on provided port, on all network interfaces.
*/
server.listen(port);
server.on('error', onError);
server.on('listening', onListening);
/**
* Normalize a port into a number, string, or false.
*/
function normalizePort(val) {
var port = parseInt(val, 10);
if (isNaN(port)) {
// named pipe
return val;
}
if (port >= 0) {
// port number
return port;
}
return false;
}
/**
* Event listener for HTTP server "error" event.
*/
function onError(error) {
if (error.syscall !== 'listen') {
throw error;
}
var bind = typeof port === 'string'
? 'Pipe ' + port
: 'Port ' + port;
// handle specific listen errors with friendly messages
switch (error.code) {
case 'EACCES':
console.error(bind + ' requires elevated privileges');
process.exit(1);
break;
case 'EADDRINUSE':
console.error(bind + ' is already in use');
process.exit(1);
break;
default:
throw error;
}
}
function onListening() {
var addr = server.address();
var bind = typeof addr === 'string'
? 'pipe ' + addr
: 'port ' + addr.port;
debug('Listening on ' + bind);
}
这是我的 app.js
var createError = require('http-errors');
var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/mean-angular6')
.then(() => console.log('connection succesful'))
.catch((err) => console.error(err));
var apiRouter = require('./routes/book');
var app = express();
app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(express.static(path.join(__dirname, 'dist/mean-angular6')));
app.use('/', express.static(path.join(__dirname, 'dist/mean-angular6')));
app.use('/api', apiRouter);
// catch 404 and forward to error handler
app.use(function(req, res, next) {
next(createError(404));
});
// error handler
app.use(function(err, req, res, next) {
// set locals, only providing error in development
res.locals.message = err.message;
res.locals.error = req.app.get('env') === 'development' ? err : {};
// render the error page
res.status(err.status || 500);
res.send(err.status);
});
module.exports = app;
解决方案
你用邮递员或curl测试过api吗?我们无法在代码中设置您的 api 路由。在前端,您不能简单地重新加载页面并获取角度路由路径,但您可以添加到您的路由器模块导入配置对象以使用哈希:
RouterModule.forRoot(routes, {useHash: true})