错误：模块“AppModule”导入的意外值“HttpClient”。 请添加@NgModule 注释
[英]Error: Unexpected value 'HttpClient' imported by the module 'AppModule'. Please add a @NgModule annotation
问题描述
Error: Unexpected value 'HttpClient' imported by the module 'AppModule'.
错误：模块“AppModule”导入的意外值“HttpClient”。 Please add a @NgModule annotation.请添加@NgModule 注释。
I do not understand why I am getting this error.我不明白为什么我会收到这个错误。
I have tried both: import { HttpClient } from '@angular/common/http';我都试过： import { HttpClient } from '@angular/common/http'; and import { HttpClientModule } from '@angular/common/http';并从 '@angular/common/http' 导入 { HttpClientModule };
This is the full error:这是完整的错误：
Error: Unexpected value 'HttpClient' imported by the module 'AppModule'. Please add a @NgModule annotation.
at syntaxError (http://localhost:8100/build/vendor.js:116430:34)
at http://localhost:8100/build/vendor.js:131184:44
at Array.forEach (<anonymous>)
at CompileMetadataResolver.getNgModuleMetadata (http://localhost:8100/build/vendor.js:131159:49)
at JitCompiler._loadModules (http://localhost:8100/build/vendor.js:150357:87)
at JitCompiler._compileModuleAndComponents (http://localhost:8100/build/vendor.js:150318:36)
at JitCompiler.compileModuleAsync (http://localhost:8100/build/vendor.js:150212:37)
at CompilerImpl.compileModuleAsync (http://localhost:8100/build/vendor.js:115251:49)
at PlatformRef.bootstrapModule (http://localhost:8100/build/vendor.js:5952:25)
at Object.491 (http://localhost:8100/build/main.js:2405:109)
Ionic Framework 3.9.2 Ionic Native: ^2.9.0 Ionic App Scripts: 3.2.4 Angular Core: 5.2.11 Angular Compiler CLI: 5.2.11 Node: 8.10.0 OS: Windows 10 Ionic Framework 3.9.2 Ionic Native：^2.9.0 Ionic App Scripts：3.2.4 Angular Core：5.2.11 Angular Compiler CLI：5.2.11 Node：8.10.0 OS：Windows 10
1 个解决方案
解决方案1
7 2019-07-16 19:24:02
You need import HttpClientModule, example:您需要导入 HttpClientModule，例如：
import { HttpClientModule } from '@angular/common/http';
@NgModule({
imports: [
BrowserModule,
// import HttpClientModule after BrowserModule.
HttpClientModule,
],
declarations: [
AppComponent,
],
bootstrap: [ AppComponent ]
})
export class AppModule {}
Read: Angula HttpClient阅读： Angula HttpClient
解决方案2
-1 2021-02-16 18:56:21
Error: Unexpected value 'HttpClient' imported by the module 'AppModule'.错误：模块'AppModule'导入了意外的值'HttpClient'。 Please add a @NgModule annotation.请添加一个@NgModule批注。
I do not understand why I am getting this error.我不明白为什么会收到此错误。
I have tried both: import { HttpClient } from '@angular/common/http';我都尝试过：从'@ angular / common / http'导入{HttpClient}； and import { HttpClientModule } from '@angular/common/http';并从'@ angular / common / http'导入{HttpClientModule};
This is the full error:这是完整的错误：
Error: Unexpected value 'HttpClient' imported by the module 'AppModule'. Please add a @NgModule annotation.
at syntaxError (http://localhost:8100/build/vendor.js:116430:34)
at http://localhost:8100/build/vendor.js:131184:44
at Array.forEach (<anonymous>)
at CompileMetadataResolver.getNgModuleMetadata (http://localhost:8100/build/vendor.js:131159:49)
at JitCompiler._loadModules (http://localhost:8100/build/vendor.js:150357:87)
at JitCompiler._compileModuleAndComponents (http://localhost:8100/build/vendor.js:150318:36)
at JitCompiler.compileModuleAsync (http://localhost:8100/build/vendor.js:150212:37)
at CompilerImpl.compileModuleAsync (http://localhost:8100/build/vendor.js:115251:49)
at PlatformRef.bootstrapModule (http://localhost:8100/build/vendor.js:5952:25)
at Object.491 (http://localhost:8100/build/main.js:2405:109)
Ionic Framework 3.9.2 Ionic Native: ^2.9.0 Ionic App Scripts: 3.2.4 Angular Core: 5.2.11 Angular Compiler CLI: 5.2.11 Node: 8.10.0 OS: Windows 10 Ionic Framework 3.9.2 Ionic本机：^ 2.9.0 Ionic应用程序脚本：3.2.4 Angular Core：5.2.11 Angular编译器CLI：5.2.11节点：8.10.0操作系统：Windows 10
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