问题
my english is poor, my apology for this :)
I have a problem with angular 2. I would create a login form but after call web service and get response I had this error below.
To blocked and authorized user on my app I'm based on auth-guard.service.ts of angular tutorial.
This error came after the canLoad action on my routing.
I use angular 2 latest version, my project is based on webpack.
My package.json configuration is :
"dependencies": {
"@angular/common": "~2.1.1",
"@angular/compiler": "~2.1.1",
"@angular/core": "~2.1.1",
"@angular/forms": "~2.1.1",
"@angular/http": "~2.1.1",
"@angular/platform-browser": "~2.1.1",
"@angular/platform-browser-dynamic": "~2.1.1",
"@angular/router": "~3.1.1",
"core-js": "^2.4.1",
"rxjs": "5.0.0-beta.12",
"zone.js": "^0.6.25"
},
"devDependencies": {
"@types/core-js": "^0.9.34",
"@types/node": "^6.0.45",
"@types/jasmine": "^2.5.35",
"angular2-template-loader": "^0.4.0",
"awesome-typescript-loader": "^2.2.4",
"css-loader": "^0.23.1",
"extract-text-webpack-plugin": "^1.0.1",
"file-loader": "^0.8.5",
"html-loader": "^0.4.3",
"html-webpack-plugin": "^2.15.0",
"jasmine-core": "^2.4.1",
"karma": "^1.2.0",
"karma-jasmine": "^1.0.2",
"karma-phantomjs-launcher": "^1.0.2",
"karma-sourcemap-loader": "^0.3.7",
"karma-webpack": "^1.8.0",
"null-loader": "^0.1.1",
"phantomjs-prebuilt": "^2.1.7",
"raw-loader": "^0.5.1",
"rimraf": "^2.5.2",
"style-loader": "^0.13.1",
"typescript": "^2.0.3",
"webpack": "^1.13.0",
"webpack-dev-server": "^1.14.1",
"webpack-merge": "^0.14.0"
}
My error is :
core.umd.js?e2a5:3004 EXCEPTION: Uncaught (in promise): ReferenceError: System is not defined
ReferenceError: System is not defined
at SystemJsNgModuleLoader.loadAndCompile (eval at <anonymous> (http://localhost:9090/vendor.js:100:2), <anonymous>:7151:20)
at SystemJsNgModuleLoader.load (eval at <anonymous> (http://localhost:9090/vendor.js:100:2), <anonymous>:7144:64)
at RouterConfigLoader.loadModuleFactory (eval at <anonymous> (http://localhost:9090/vendor.js:253:2), <anonymous>:168:76)
at RouterConfigLoader.load (eval at <anonymous> (http://localhost:9090/vendor.js:253:2), <anonymous>:160:52)
at MergeMapSubscriber.eval [as project] (eval at <anonymous> (http://localhost:9090/vendor.js:253:2), <anonymous>:904:82)
at MergeMapSubscriber._tryNext (eval at <anonymous> (http://localhost:9090/vendor.js:343:2), <anonymous>:110:27)
at MergeMapSubscriber._next (eval at <anonymous> (http://localhost:9090/vendor.js:343:2), <anonymous>:100:18)
at MergeMapSubscriber.Subscriber.next (eval at <anonymous> (http://localhost:9090/vendor.js:130:2), <anonymous>:89:18)
at EverySubscriber.notifyComplete (eval at <anonymous> (http://localhost:9090/vendor.js:367:2), <anonymous>:47:26)
at EverySubscriber._complete (eval at <anonymous> (http://localhost:9090/vendor.js:367:2), <anonymous>:64:14)
at EverySubscriber.Subscriber.complete (eval at <anonymous> (http://localhost:9090/vendor.js:130:2), <anonymous>:114:18)
at MergeAllSubscriber._complete (eval at <anonymous> (http://localhost:9090/vendor.js:379:2), <anonymous>:94:30)
at MergeAllSubscriber.Subscriber.complete (eval at <anonymous> (http://localhost:9090/vendor.js:130:2), <anonymous>:114:18)
at MapSubscriber.Subscriber._complete (eval at <anonymous> (http://localhost:9090/vendor.js:130:2), <anonymous>:132:26)
at MapSubscriber.Subscriber.complete (eval at <anonymous> (http://localhost:9090/vendor.js:130:2), <anonymous>:114:18)
at ArrayObservable._subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:289:2), <anonymous>:116:24)
at ArrayObservable.Observable.subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:56:27)
at Observable._subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:114:28)
at MapOperator.call (eval at <anonymous> (http://localhost:9090/vendor.js:373:2), <anonymous>:54:23)
at Observable.subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:53:22)
at Observable._subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:114:28)
at MergeAllOperator.call (eval at <anonymous> (http://localhost:9090/vendor.js:379:2), <anonymous>:63:23)
at Observable.subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:53:22)
at Observable._subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:114:28)
at EveryOperator.call (eval at <anonymous> (http://localhost:9090/vendor.js:367:2), <anonymous>:27:23)
at Observable.subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:53:22)
at Observable._subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:114:28)
at MergeMapOperator.call (eval at <anonymous> (http://localhost:9090/vendor.js:343:2), <anonymous>:75:23)
at Observable.subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:53:22)
at Observable._subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:114:28)
at MergeMapOperator.call (eval at <anonymous> (http://localhost:9090/vendor.js:343:2), <anonymous>:75:23)
at Observable.subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:53:22)
at Observable._subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:114:28)
at CatchOperator.call (eval at <anonymous> (http://localhost:9090/vendor.js:391:2), <anonymous>:30:23)
at Observable.subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:53:22)
at Object.subscribeToResult (eval at <anonymous> (http://localhost:9090/vendor.js:349:2), <anonymous>:21:27)
at MergeAllSubscriber._next (eval at <anonymous> (http://localhost:9090/vendor.js:379:2), <anonymous>:85:42)
at MergeAllSubscriber.Subscriber.next (eval at <anonymous> (http://localhost:9090/vendor.js:130:2), <anonymous>:89:18)
at MapSubscriber._next (eval at <anonymous> (http://localhost:9090/vendor.js:373:2), <anonymous>:83:26)
at MapSubscriber.Subscriber.next (eval at <anonymous> (http://localhost:9090/vendor.js:130:2), <anonymous>:89:18)
at ArrayObservable._subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:289:2), <anonymous>:114:28)
at ArrayObservable.Observable.subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:56:27)
at Observable._subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:114:28)
at MapOperator.call (eval at <anonymous> (http://localhost:9090/vendor.js:373:2), <anonymous>:54:23)
at Observable.subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:53:22)
at Observable._subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:114:28)
at MergeAllOperator.call (eval at <anonymous> (http://localhost:9090/vendor.js:379:2), <anonymous>:63:23)
at Observable.subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:53:22)
at Observable._subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:114:28)
at FirstOperator.call (eval at <anonymous> (http://localhost:9090/vendor.js:403:2), <anonymous>:70:23)
at Observable.subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:53:22)
at Observable._subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:114:28)
at CatchOperator.call (eval at <anonymous> (http://localhost:9090/vendor.js:391:2), <anonymous>:30:23)
at Observable.subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:53:22)
at Observable._subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:114:28)
at MapOperator.call (eval at <anonymous> (http://localhost:9090/vendor.js:373:2), <anonymous>:54:23)
at Observable.subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:53:22)
at Object.subscribeToResult (eval at <anonymous> (http://localhost:9090/vendor.js:349:2), <anonymous>:21:27)
at MergeAllSubscriber._next (eval at <anonymous> (http://localhost:9090/vendor.js:379:2), <anonymous>:85:42)
at MergeAllSubscriber.Subscriber.next (eval at <anonymous> (http://localhost:9090/vendor.js:130:2), <anonymous>:89:18)
at ScalarObservable._subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:295:2), <anonymous>:49:24)
at ScalarObservable.Observable.subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:56:27)
at Observable._subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:114:28)
at MergeAllOperator.call (eval at <anonymous> (http://localhost:9090/vendor.js:379:2), <anonymous>:63:23)
at Observable.subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:53:22)
at Observable._subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:114:28)
at LastOperator.call (eval at <anonymous> (http://localhost:9090/vendor.js:415:2), <anonymous>:38:23)
at Observable.subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:53:22)
at Observable._subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:114:28)
at MapOperator.call (eval at <anonymous> (http://localhost:9090/vendor.js:373:2), <anonymous>:54:23)
at Observable.subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:53:22)
at Observable._subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:114:28)
at MapOperator.call (eval at <anonymous> (http://localhost:9090/vendor.js:373:2), <anonymous>:54:23)
at Observable.subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:53:22)
at Observable._subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:114:28)
at MapOperator.call (eval at <anonymous> (http://localhost:9090/vendor.js:373:2), <anonymous>:54:23)
at Observable.subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:53:22)
at Observable._subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:114:28)
at CatchOperator.call (eval at <anonymous> (http://localhost:9090/vendor.js:391:2), <anonymous>:30:23)
at Observable.subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:53:22)
at Observable._subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:114:28)
at MergeMapOperator.call (eval at <anonymous> (http://localhost:9090/vendor.js:343:2), <anonymous>:75:23)
at Observable.subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:53:22)
at Observable._subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:114:28)
at MapOperator.call (eval at <anonymous> (http://localhost:9090/vendor.js:373:2), <anonymous>:54:23)
at Observable.subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:53:22)
at Observable._subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:114:28)
at MapOperator.call (eval at <anonymous> (http://localhost:9090/vendor.js:373:2), <anonymous>:54:23)
at Observable.subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:53:22)
at Observable._subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:114:28)
at MapOperator.call (eval at <anonymous> (http://localhost:9090/vendor.js:373:2), <anonymous>:54:23)
at Observable.subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:53:22)
at Observable._subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:114:28)
at MergeMapOperator.call (eval at <anonymous> (http://localhost:9090/vendor.js:343:2), <anonymous>:75:23)
at Observable.subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:53:22)
at Observable._subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:114:28)
at MergeMapOperator.call (eval at <anonymous> (http://localhost:9090/vendor.js:343:2), <anonymous>:75:23)
at Observable.subscribe (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:53:22)
at eval (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:87:38)
at new ZoneAwarePromise (eval at <anonymous> (http://localhost:9090/polyfills.js:2195:2), <anonymous>:518:29)
at Observable.forEach (eval at <anonymous> (http://localhost:9090/vendor.js:112:2), <anonymous>:86:16)
at eval (eval at <anonymous> (http://localhost:9090/vendor.js:253:2), <anonymous>:2630:22)
at new ZoneAwarePromise (eval at <anonymous> (http://localhost:9090/polyfills.js:2195:2), <anonymous>:518:29)
at Router.runNavigate (eval at <anonymous> (http://localhost:9090/vendor.js:253:2), <anonymous>:2595:20)
at eval (eval at <anonymous> (http://localhost:9090/vendor.js:253:2), <anonymous>:2586:71)
at ZoneDelegate.invoke (eval at <anonymous> (http://localhost:9090/polyfills.js:2195:2), <anonymous>:232:26)
at Object.onInvoke (eval at <anonymous> (http://localhost:9090/vendor.js:100:2), <anonymous>:6206:41)
at ZoneDelegate.invoke (eval at <anonymous> (http://localhost:9090/polyfills.js:2195:2), <anonymous>:231:32)
at Zone.run (eval at <anonymous> (http://localhost:9090/polyfills.js:2195:2), <anonymous>:114:43)
at eval (eval at <anonymous> (http://localhost:9090/polyfills.js:2195:2), <anonymous>:502:57)
at ZoneDelegate.invokeTask (eval at <anonymous> (http://localhost:9090/polyfills.js:2195:2), <anonymous>:265:35)
at Object.onInvokeTask (eval at <anonymous> (http://localhost:9090/vendor.js:100:2), <anonymous>:6197:41)
at ZoneDelegate.invokeTask (eval at <anonymous> (http://localhost:9090/polyfills.js:2195:2), <anonymous>:264:40)
at Zone.runTask (eval at <anonymous> (http://localhost:9090/polyfills.js:2195:2), <anonymous>:154:47)
at drainMicroTaskQueue (eval at <anonymous> (http://localhost:9090/polyfills.js:2195:2), <anonymous>:401:35)
at XMLHttpRequest.ZoneTask.invoke (eval at <anonymous> (http://localhost:9090/polyfills.js:2195:2), <anonymous>:339:25)
Have you a response for me ?
回答1:
This problem is an underlying problem of Angular 2 - Uncaught (in promise): Error: XHR error (404 Not Found)
In webpack you do not need to add systemjs.
The real problem is an routing problem ... To solved this :
To use this router loader you must install it :
npm install angular2-router-loader -- save-dev
And you must implements 'angular2-router-loader' in your webpack config like this :
loaders: [
{
test: /\.ts$/,
loaders: ['awesome-typescript-loader', 'angular2-template-loader','angular2-router-loader']
},
...
],
回答2:
Had the same problem. The following were key for me:
Nevermind. I could have sworn it worked. When I use non-lazy routes my components load fine with Angular Universal. I had { path: 'lazy', component: LazyViewComponent } instead of the lazy route, and I noticed my RouterModule in lazy.module.ts wasn't exported. So I tried the lazy route again, now with RouterModule exported, and I could have sworn it worked. I then removed angular2-router-loader to see if that was needed, and it was, and then tested if a local route for the module was needed, and it was. Shared my findings on the interwebs, came back to find it wasn't working. I guess let's just stick with non-lazy routes for now.
webpack.config.js should include both @ngtools/webpack and angular2-router-loader:
const ngtools = require('@ngtools/webpack');
const path = require('path');
const nodeExternals = require('webpack-node-externals');
module.exports = {
entry: {
main: './src/main.server.ts'
},
resolve: {
extensions: ['.ts', '.js']
},
target: 'node',
externals: [nodeExternals({
modulesFromFile: true
})],
output: {
path: path.join(__dirname, 'dist'),
filename: '[name].js'
},
plugins: [
new ngtools.AotPlugin({
tsConfigPath: './tsconfig.json',
})
],
module: {
rules: [
{
test: /\.ts$/,
loaders: [
'@ngtools/webpack',
'angular2-router-loader'
],
},
{
test: /\.scss$/,
use: ['raw-loader', 'sass-loader']
},
{ test: /\.css$/, loader: 'raw-loader' },
{ test: /\.html$/, loader: 'raw-loader' }
]
}
};
The routing module needs to use an absolute path to the module:
import { NgModule } from '@angular/core';
import { RouterModule, Routes } from '@angular/router';
import { HomeViewComponent } from './home-view/home-view.component';
const routes: Routes = [
{ path: '', component: HomeViewComponent, pathMatch: 'full'},
{ path: 'lazy', loadChildren: 'app/lazy.module#LazyModule'}
];
@NgModule({
imports: [RouterModule.forRoot(routes)],
exports: [RouterModule]
})
export class AppRoutingModule { }
And crucially, the lazy module needs to export the RouterModule
import { NgModule, Component } from '@angular/core';
import { RouterModule } from '@angular/router';
@Component({
selector: 'os-lazy-view',
template: `<h3>i'm lazy</h3>`,
})
export class LazyViewComponent {
}
@NgModule({
declarations: [LazyViewComponent],
imports: [
RouterModule.forChild([
{ path: '', component: LazyViewComponent, pathMatch: 'full' },
]),
],
exports: [
RouterModule
]
})
export class LazyModule {
}
来源：https://stackoverflow.com/questions/40497167/angular-2-uncaught-in-promise-referenceerror-system-is-not-defined