Na het upgraden van angular 4.4 naar 5.0 en na het updaten van alle HttpModule en Http naar HttpClientModule begon ik deze foutmelding te krijgen.
Ik heb ook HttpModule opnieuw toegevoegd om zeker te zijn dat het niet door een afhankelijkheid komt maar het lost het probleem niet op
In app.module, heb ik alles correct ingesteld
import { HttpModule } from '@angular/http';
import { HttpClientModule, HttpClient } from '@angular/common/http';
.
.
.
@NgModule({
imports: [
BrowserModule,
HttpClientModule,
HttpModule,
BrowserAnimationsModule,
FormsModule,
AppRoutingModule,
.
.
.
Ik weet niet waar deze fout vandaan komt, of ik heb geen idee hoe ik er binnen kan komen. Ik heb ook een waarschuwing (zet het hieronder ook) misschien is het gerelateerd.
Error: StaticInjectorError[HttpClient]:
StaticInjectorError[HttpClient]:
NullInjectorError: No provider for HttpClient!
at _NullInjector.get (vendor.js?v=mekBM8IVBK72-MIZOVSTJizGi_TD_xK3uhPOCRlEHwg:5665)
at resolveToken (vendor.js?v=mekBM8IVBK72-MIZOVSTJizGi_TD_xK3uhPOCRlEHwg:5953)
at tryResolveToken (vendor.js?v=mekBM8IVBK72-MIZOVSTJizGi_TD_xK3uhPOCRlEHwg:5895)
at StaticInjector.get (vendor.js?v=mekBM8IVBK72-MIZOVSTJizGi_TD_xK3uhPOCRlEHwg:5766)
at resolveToken (vendor.js?v=mekBM8IVBK72-MIZOVSTJizGi_TD_xK3uhPOCRlEHwg:5953)
at tryResolveToken (vendor.js?v=mekBM8IVBK72-MIZOVSTJizGi_TD_xK3uhPOCRlEHwg:5895)
at StaticInjector.get (vendor.js?v=mekBM8IVBK72-MIZOVSTJizGi_TD_xK3uhPOCRlEHwg:5766)
at resolveNgModuleDep (vendor.js?v=mekBM8IVBK72-MIZOVSTJizGi_TD_xK3uhPOCRlEHwg:15328)
at _createClass (vendor.js?v=mekBM8IVBK72-MIZOVSTJizGi_TD_xK3uhPOCRlEHwg:15373)
at _createProviderInstance$1 (vendor.js?v=mekBM8IVBK72-MIZOVSTJizGi_TD_xK3uhPOCRlEHwg:15339)
Waarschuwingsbericht:
./node_modules/@angular/Common/esm5/http.js
There are multiple modules with names that only differ in casing.
This can lead to unexpected behavior when compiling on a filesystem with other case-semantic.
Use equal casing. Compare these module identifiers:
* D:\XXX\node_modules\@angular\Common\esm5\http.js
Used by 21 module(s), i. e.
D:\XXX\node_modules\awesome-typescript-loader\dist\entry.js?silent=true!D:\XXX\node_modules\angular2-template-loader\index.js!D:\XXX\ClientApp\app\services\notification-endpoint.service.ts
* D:\XXX\node_modules\@angular\common\esm5\http.js
Used by 1 module(s), i. e.
D:\XXX\node_modules\awesome-typescript-loader\dist\entry.js?silent=true!D:\XXX\node_modules\angular2-template-loader\index.js!D:\XXX\ClientApp\app\app.module.ts
@ ./node_modules/@angular/Common/esm5/http.js
@ ./ClientApp/app/services/notification-endpoint.service.ts
@ ./ClientApp/app/app.module.ts
@ ./ClientApp/boot.browser.ts
@ multi event-source-polyfill webpack-hot-middleware/client?path=__webpack_hmr&dynamicPublicPath=true ./ClientApp/boot.browser.ts
StaticInjectorError[HttpClient]: StaticInjectorError[HttpClient]: NullInjectorError: Geen provider voor HttpClient!
Angular version: 5.0.0 and 5.0.1 (also 5.1 beta)
Browser:
- all
For Tooling issues:
- Node version: 8.5.0
- Platform: windows
{
"name": "X",
"version": "1.0.0",
"description": "X",
"author": {
"name": "X X",
"email": "XX",
"url": "X"
},
"homepage": "X",
"dependencies": {
"@angular/animations": "^5.1.0-beta.0",
"@angular/common": "^5.1.0-beta.0",
"@angular/compiler": "^5.1.0-beta.0",
"@angular/compiler-cli": "^5.1.0-beta.0",
"@angular/core": "^5.1.0-beta.0",
"@angular/forms": "^5.1.0-beta.0",
"@angular/http": "^5.1.0-beta.0",
"@angular/platform-browser": "^5.1.0-beta.0",
"@angular/platform-browser-dynamic": "^5.1.0-beta.0",
"@angular/platform-server": "^5.1.0-beta.0",
"@angular/router": "^5.1.0-beta.0",
"@ngtools/webpack": "^1.8.0",
"@ngx-translate/core": "^8.0.0",
"@ngx-translate/http-loader": "^2.0.0",
"@swimlane/ngx-datatable": "^11.0.3",
"@types/jquery": "^3.2.16",
"@types/webpack-env": "^1.13.2",
"angular2-template-loader": "^0.6.2",
"aspnet-webpack": "^2.0.1",
"awesome-typescript-loader": "^3.3.0",
"bootstrap": "^3.3.7",
"bootstrap-datepicker": "^1.7.1",
"bootstrap-select": "^1.12.4",
"bootstrap-toggle": "^2.2.2",
"bootstrap-vertical-tabs": "^1.2.2",
"chart.js": "^2.7.1",
"core-js": "^2.5.1",
"css": "^2.2.1",
"css-loader": "^0.28.7",
"event-source-polyfill": "^0.0.11",
"expose-loader": "^0.7.3",
"extract-text-webpack-plugin": "^3.0.2",
"file-loader": "^1.1.5",
"font-awesome": "^4.7.0",
"html-loader": "^0.5.1",
"jquery": "^3.2.1",
"json-loader": "^0.5.7",
"ng2-charts": "^1.6.0",
"ng2-toasty": "^4.0.3",
"ngx-bootstrap": "^2.0.0-beta.8",
"node-sass": "^4.6.0",
"popper.js": "^1.12.6",
"raw-loader": "^0.5.1",
"rxjs": "^5.5.2",
"sass-loader": "^6.0.6",
"style-loader": "^0.19.0",
"to-string-loader": "^1.1.5",
"typescript": "^2.6.1",
"url-loader": "^0.6.2",
"web-animations-js": "^2.3.1",
"webpack": "^3.8.1",
"webpack-hot-middleware": "^2.20.0",
"webpack-merge": "^4.1.1",
"zone.js": "^0.8.18"
},
"devDependencies": {
"@types/chai": "^4.0.4",
"@types/jasmine": "^2.6.3",
"chai": "^4.1.2",
"jasmine-core": "^2.8.0",
"karma": "^1.7.1",
"karma-chai": "^0.1.0",
"karma-chrome-launcher": "^2.2.0",
"karma-cli": "^1.0.1",
"karma-jasmine": "^1.1.0",
"karma-jasmine-html-reporter": "^0.2.2",
"karma-webpack": "^2.0.5"
},
"scripts": {
"dev-build": "node node_modules/webpack/bin/webpack.js --config webpack.config.vendor.js",
"test": "karma start ClientApp/test/karma.conf.js"
}
}
webpack.config.js
const path = require('path');
const webpack = require('webpack');
const merge = require('webpack-merge');
const AotPlugin = require('@ngtools/webpack').AotPlugin;
const CheckerPlugin = require('awesome-typescript-loader').CheckerPlugin;
module.exports = (env) => {
// Configuration in common to both client-side and server-side bundles
const isDevBuild = !(env && env.prod);
const sharedConfig = {
stats: { modules: false },
context: __dirname,
resolve: { extensions: ['.js', '.ts'] },
output: {
filename: '[name].js',
publicPath: 'dist/' // Webpack dev middleware, if enabled, handles requests for this URL prefix
},
module: {
rules: [
{ test: /\.ts$/, use: isDevBuild ? ['awesome-typescript-loader?silent=true', 'angular2-template-loader'] : '@ngtools/webpack' },
{ test: /\.html$/, use: 'html-loader?minimize=false' },
{ test: /\.css$/, use: ['to-string-loader', isDevBuild ? 'css-loader' : 'css-loader?minimize'] },
{ test: /\.scss$/, use: ['to-string-loader', isDevBuild ? 'css-loader' : 'css-loader?minimize', 'sass-loader'] },
{ test: /\.(png|jpg|jpeg|gif|svg)$/, use: 'url-loader?limit=25000' }
]
},
plugins: [new CheckerPlugin()]
};
// Configuration for client-side bundle suitable for running in browsers
const clientBundleOutputDir = './wwwroot/dist';
const clientBundleConfig = merge(sharedConfig, {
entry: { 'main-client': './ClientApp/boot.browser.ts' },
output: { path: path.join(__dirname, clientBundleOutputDir) },
plugins: [
new webpack.DllReferencePlugin({
context: __dirname,
manifest: require('./wwwroot/dist/vendor-manifest.json')
})
].concat(isDevBuild ? [
// Plugins that apply in development builds only
new webpack.SourceMapDevToolPlugin({
filename: '[file].map', // Remove this line if you prefer inline source maps
moduleFilenameTemplate: path.relative(clientBundleOutputDir, '[resourcePath]') // Point sourcemap entries to the original file locations on disk
})
] : [
// Plugins that apply in production builds only
new webpack.optimize.UglifyJsPlugin(),
new AotPlugin({
tsConfigPath: './tsconfig.json',
entryModule: path.join(__dirname, 'ClientApp/app/app.module#AppModule')
})
])
});
return [clientBundleConfig];
};
webpack.config.vendor.js
const path = require('path');
const webpack = require('webpack');
const ExtractTextPlugin = require('extract-text-webpack-plugin');
const merge = require('webpack-merge');
const treeShakableModules = [
'@angular/animations',
'@angular/common',
'@angular/compiler',
'@angular/core',
'@angular/forms',
'@angular/http',
'@angular/platform-browser',
'@angular/platform-browser-dynamic',
'@angular/router',
'zone.js',
];
const nonTreeShakableModules = [
'bootstrap',
'core-js/client/shim',
'web-animations-js',
'event-source-polyfill',
'jquery',
'@swimlane/ngx-datatable/release/assets/icons.css',
'ng2-toasty',
'ng2-toasty/bundles/style-bootstrap.css',
'ng2-charts',
'ngx-bootstrap/modal',
'ngx-bootstrap/tooltip',
'ngx-bootstrap/popover',
'ngx-bootstrap/dropdown',
'ngx-bootstrap/carousel',
'bootstrap-vertical-tabs/bootstrap.vertical-tabs.css',
'bootstrap-toggle/css/bootstrap-toggle.css',
'bootstrap-toggle/js/bootstrap-toggle.js',
'bootstrap-select/dist/css/bootstrap-select.css',
'bootstrap-select/dist/js/bootstrap-select.js',
'bootstrap-datepicker/dist/css/bootstrap-datepicker3.css',
'font-awesome/css/font-awesome.css'
];
const allModules = treeShakableModules.concat(nonTreeShakableModules);
module.exports = (env) => {
const extractCSS = new ExtractTextPlugin('vendor.css');
const isDevBuild = !(env && env.prod);
const sharedConfig = {
stats: { modules: false },
resolve: { extensions: ['.js'] },
module: {
rules: [
{ test: /\.(gif|png|woff|woff2|eot|ttf|svg)(\?|$)/, use: 'url-loader?limit=100000' }
]
},
output: {
publicPath: 'dist/',
filename: '[name].js',
library: '[name]_[hash]'
},
plugins: [
new webpack.ProvidePlugin({ $: 'jquery', jQuery: 'jquery' }), // Maps these identifiers to the jQuery package (because Bootstrap expects it to be a global variable)
new webpack.ContextReplacementPlugin(/\@angular\b.*\b(bundles|linker)/, path.join(__dirname, './ClientApp')), // Workaround for https://github.com/angular/angular/issues/11580
new webpack.ContextReplacementPlugin(/angular(\\|\/)core(\\|\/)@angular/, path.join(__dirname, './ClientApp')), // Workaround for https://github.com/angular/angular/issues/14898
new webpack.IgnorePlugin(/^vertx$/) // Workaround for https://github.com/stefanpenner/es6-promise/issues/100
]
};
const clientBundleConfig = merge(sharedConfig, {
entry: {
// To keep development builds fast, include all vendor dependencies in the vendor bundle.
// But for production builds, leave the tree-shakable ones out so the AOT compiler can produce a smaller bundle.
vendor: isDevBuild ? allModules : nonTreeShakableModules
},
output: { path: path.join(__dirname, 'wwwroot', 'dist') },
module: {
rules: [
{ test: /\.css(\?|$)/, use: extractCSS.extract({ use: isDevBuild ? 'css-loader' : 'css-loader?minimize' }) }
]
},
plugins: [
extractCSS,
new webpack.DllPlugin({
path: path.join(__dirname, 'wwwroot', 'dist', '[name]-manifest.json'),
name: '[name]_[hash]'
})
].concat(isDevBuild ? [] : [
new webpack.optimize.UglifyJsPlugin()
])
});
return [clientBundleConfig];
}
Om dit probleem op te lossen is HttpClient
Angular's mechanisme om te communiceren met een server op afstand via HTTP.
Om HttpClient
overal in de app beschikbaar te maken,
open de root AppModule
,
importeer de HttpClientModule
uit @angular/common/http
,
voeg het toe aan de @NgModule.imports
array.
Voeg het volgende toe aan app.module.ts:
import { HttpClientModule } from '@angular/common/http';
Voeg daarna in de import sectie toe: imports:[HttpClientModule, ]
U hebt in uw module geen providers opgegeven:
<strike>import { HttpModule } from '@angular/http';</strike>
import { HttpClientModule, HttpClient } from '@angular/common/http';
@NgModule({
imports: [
BrowserModule,
HttpClientModule,
BrowserAnimationsModule,
FormsModule,
AppRoutingModule
],
providers: [ HttpClientModule, ... ]
// ...
})
export class MyModule { /* ... */ }
U moet de HttpClientTestingModule
toevoegen aan de TestBed configuratie wanneer u ng test
uitvoert en de "No provider for HttpClient" foutmelding krijgt:
// Http testing module and mocking controller
import { HttpClientTestingModule, HttpTestingController } from '@angular/common/http/testing';
// Other imports
import { TestBed } from '@angular/core/testing';
import { HttpClient, HttpErrorResponse } from '@angular/common/http';
describe('HttpClient testing', () => {
let httpClient: HttpClient;
let httpTestingController: HttpTestingController;
beforeEach(() => {
TestBed.configureTestingModule({
imports: [ HttpClientTestingModule ]
});
// Inject the http service and test controller for each test
httpClient = TestBed.get(HttpClient);
httpTestingController = TestBed.get(HttpTestingController);
});
it('works', () => {
});
});
Je krijgt een fout voor HttpClient dus, je mist HttpClientModule voor dat.
Je moet het importeren in app.module.ts bestand als dit -
import { HttpClientModule } from '@angular/common/http';
en vermeld het in de NgModule Decorator zoals dit -
@NgModule({
...
imports:[ HttpClientModule ]
...
})
Als dit ook niet werkt probeer dan de cookies van de browser te wissen en probeer je server opnieuw op te starten. Hopelijk werkt het, ik kreeg dezelfde foutmelding.