No provider for HttpClient

Question

After upgrading from angular 4.4 to 5.0 and after updating all HttpModule and Http to HttpClientModule I started to get this error.

I also added HttpModule again to be sure it's not due to some dependency but it doesn't resolve the issue

In app.module, I have all correctly set

import { HttpModule } from '@angular/http'; import { HttpClientModule, HttpClient } from '@angular/common/http'; . . . @NgModule({     imports: [         BrowserModule,         HttpClientModule,         HttpModule,         BrowserAnimationsModule,         FormsModule,         AppRoutingModule, . . . 

I don't know from where this error is coming, or I have no clue how to get inner of it. I also have a warning (put it below too) maybe its related.

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) 

Warning Message:

./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 

Current behavior

StaticInjectorError[HttpClient]: StaticInjectorError[HttpClient]: NullInjectorError: No provider for HttpClient!

Environment

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]; } 

Answer 1

To resolve this problem HttpClient is Angular's mechanism for communicating with a remote server over HTTP.

To make HttpClient available everywhere in the app,

1. open the root AppModule,

2. import the HttpClientModule from @angular/common/http,

   import { HttpClientModule } from '@angular/common/http';

3. add it to the @NgModule.imports array.

   imports:[HttpClientModule, ]

Answer 2

You have not provided providers in your module:

<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 { /* ... */ } 

Using HttpClient in Tests

You will need to add the HttpClientTestingModule to the TestBed configuration when running ng test and getting the "No provider for HttpClient" error:

// 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', () => {   }); });