I'm trying to build the 5 min app in angular 2 by this guide: https://angular.io/docs/ts/latest/tutorial/toh-pt6.html.
In the http part, I added a fake server but I get 404 error because the angular2-in-memory-web-api.
http://localhost:4200/vendor/angular2-in-memory-web-api/in-memory-backend.service.js
Failed to load resource: the server responded with a status of 404 (Not Found)
I was trying to follow this answer: Angular2 Tutorial (Tour of Heroes): Cannot find module 'angular2-in-memory-web-api'
But he didn't use angular-cli + I don't have a clue where to add those dependencies they talked about there.
My main.ts:
// Imports for loading & configuring the in-memory web api
import { XHRBackend } from '@angular/http';
import { InMemoryBackendService, SEED_DATA } from 'angular2-in-memory-web-api';
import { InMemoryDataService } from './app/in-memory-data.service';
// The usual bootstrapping imports
import { bootstrap } from '@angular/platform-browser-dynamic';
import { enableProdMode } from '@angular/core';
import { AppComponent, environment } from './app/';
import { APP_ROUTER_PROVIDERS } from './app/app.routes';
import { HTTP_PROVIDERS } from '@angular/http';
if (environment.production) {
enableProdMode();
}
bootstrap(AppComponent, [
APP_ROUTER_PROVIDERS,
HTTP_PROVIDERS,
{ provide: XHRBackend, useClass: InMemoryBackendService }, // in-mem server
{ provide: SEED_DATA, useClass: InMemoryDataService } // in-mem server data
]);
This is my package.json:
{
"name": "angular2-projects",
"version": "0.0.0",
"license": "MIT",
"angular-cli": {},
"scripts": {
"start": "ng serve",
"postinstall": "typings install",
"lint": "tslint \"src/**/*.ts\"",
"test": "ng test",
"pree2e": "webdriver-manager update",
"e2e": "protractor"
},
"private": true,
"dependencies": {
"@angular/common": "2.0.0-rc.4",
"@angular/compiler": "2.0.0-rc.4",
"@angular/core": "2.0.0-rc.4",
"@angular/forms": "0.2.0",
"@angular/http": "2.0.0-rc.4",
"@angular/platform-browser": "2.0.0-rc.4",
"@angular/platform-browser-dynamic": "2.0.0-rc.4",
"@angupackage.lar/router": "3.0.0-beta.1",
"@angular/router-deprecated": "2.0.0-rc.2",
"es6-shim": "0.35.1",
"reflect-metadata": "0.1.3",
"rxjs": "5.0.0-beta.6",
"systemjs": "0.19.26",
"zone.js": "0.6.12"
},
"devDependencies": {
"angular-cli": "1.0.0-beta.9",
"codelyzer": "0.0.20",
"ember-cli-inject-live-reload": "1.4.0",
"jasmine-core": "2.4.1",
"jasmine-spec-reporter": "2.5.0",
"karma": "0.13.22",
"karma-chrome-launcher": "0.2.3",
"karma-jasmine": "0.3.8",
"protractor": "3.3.0",
"ts-node": "0.5.5",
"tslint": "3.11.0",
"typescript": "1.8.10",
"typings": "0.8.1"
}
}
What do I need to do to make that error go away?
First, you need to npm i angular2-in-memory-web-api --save
Then in main.ts:
import{InMemoryBackendService, SEED_DATA } from 'angular2-in-memory-web-api'
in src/system-config.js
:
const barrels: string[] = [
// Angular specific barrels.
'@angular/core',
'@angular/common',
'@angular/compiler',
'@angular/forms',
'@angular/http',
'@angular/router',
'@angular/platform-browser',
'@angular/platform-browser-dynamic',
// Thirdparty barrels.
'rxjs',
'angular2-in-memory-web-api',
// App specific barrels.
'app',
'app/shared',
/** @cli-barrel */
];
// Apply the CLI SystemJS configuration.
System.config({
map: {
'@angular': 'vendor/@angular',
'rxjs': 'vendor/rxjs',
'main': 'main.js',
'angular2-in-memory-web-api': 'vendor/angular2-in-memory-web-api'
},
and add this to angular-cli-build.js
in your projects root directory:
'angular2-in-memory-web-api/**/**/*.js'`
Finally restart the server and run ng build
before ng serve
.
Answering to an old post, however my solution was different so i thought i will post it here.
I was getting the exact same error mentioned using the latest package and using angular (4 and above).
The reason was in my app.module.ts
i had imported the InMemoryWebApiModule
prior to HttpModule
. putting the InMemoryWebApiModule
after HttpModule
(and it should be like that undoubtedly) did the trick.
Wrong
imports: [
BrowserModule,
FormsModule,
InMemoryWebApiModule.forRoot(InMemoryDataService),
HttpModule,
JsonpModule,
]
Correct
imports: [
BrowserModule,
FormsModule,
HttpModule,
JsonpModule,
InMemoryWebApiModule.forRoot(InMemoryDataService) //this has to be imported after httpModule
]
Adding answer for latest versions of angular2-in-memory-web-api since I've been hours trying to find 404 errors as well.
1)First of all angular2-in-memory-web-api is now deprecated for new angular-in-memory-web-api, this means you need to make sure to change your package.json to have latest version:
"angular2-in-memory-web-api": "0.0.6",
would need to change to something like:
"angular-in-memory-web-api": "^0.1.3",
2)Remember to modify systemjs.config.js (if in angular page tutorial for example as my case):
'angular-in-memory-web-api': 'node_modules/angular-in-memory-web-api/bundles/in-memory-web-api.umd.js',
3)In your module imports change to the latest version:
import { InMemoryWebApiModule } from 'angular-in-memory-web-api/in-memory-web-api.module';
needs to change to the new declaration:
import { InMemoryWebApiModule } from 'angular-in-memory-web-api';
4)Then rerun npm install
and tha app should run with the latest version without any glitches. This solved the problem form me.
you missed app.module configuration for in-memory web api, here is the section of the tutorial: angular-toh-simulating-the-web-api
来源:https://stackoverflow.com/questions/38275364/angular2-in-memory-web-api-404-error