Bootstrap vs Angular 2：多脚本加载器中的错误！找不到模块：错

>我安装了bootstrap：npm install bootstrap @ next
>将样式和脚本添加到角度

"styles": [
    "styles.css","../node_modules/bootstrap/dist/css/bootstrap.css"
  ],"scripts": [
"../node_modules/jquery/dist/jquery.js","../node_modules/tether/dist/js/tether.js","../node_modules/bootstrap/dist/js/bootstrap.js"
  ],

>集成bootstrap 4到angular-cli：npm install –save @ ng-bootstrap / ngbootstrap
>将NgbModule导入添加到app.module.ts中
>添加到导入部分NgbModule到app.module.ts
>修改后的app.module.html：< NgbAlert>提示文字< / NgbAlert>

这是我错过的？

当我运行服务时,我得到以下错误：

ERROR in Error encountered resolving symbol values statically. Could not resolve @ng-bootstrap/ng-bootstrap relative to F:/src/prjs/angular2/pilot/klw/src/app/app.module.ts.,resolving symbol AppModule in F:/src/prjs/angular2/pilot/klw/src/app/app.module.ts,resolving symbol AppModule in F:/src/prjs/angular2/pilot/klw/src/app/app.module.ts

ERROR in multi script-loader!./~/jquery/dist/jquery.js script-loader!./~/tether/dist/js/tether.js script-loader!./~/bootstrap/dist/js/bootstrap.js
Module not found: Error: Can't resolve 'F:srcprjsangular2pilotklwnode_modulesjquerydistjquery.js' in 'F:srcprjsangular2pilotklw'
 @ multi script-loader!./~/jquery/dist/jquery.js script-loader!./~/tether/dist/js/tether.js script-loader!./~/bootstrap/dist/js/bootstrap.js

ERROR in multi script-loader!./~/jquery/dist/jquery.js script-loader!./~/tether/dist/js/tether.js script-loader!./~/bootstrap/dist/js/bootstrap.js
Module not found: Error: Can't resolve 'F:srcprjsangular2pilotklwnode_modulestetherdistjstether.js' in 'F:srcprjsangular2pilotklw'

ERROR in multi script-loader!./~/jquery/dist/jquery.js script-loader!./~/tether/dist/js/tether.js script-loader!./~/bootstrap/dist/js/bootstrap.js
Module not found: Error: Can't resolve 'F:srcprjsangular2pilotklwnode_modulestetherdistjstether.js' in 'F:srcprjsangular2pilotklw'
 @ multi script-loader!./~/jquery/dist/jquery.js script-loader!./~/tether/dist/js/tether.js script-loader!./~/bootstrap/dist/js/bootstrap.js

ERROR in multi script-loader!./~/jquery/dist/jquery.js script-loader!./~/tether/dist/js/tether.js script-loader!./~/bootstrap/dist/js/bootstrap.js
Module not found: Error: Can't resolve 'F:srcprjsangular2pilotklwnode_modulesbootstrapdistjsbootstrap.js' in 'F:srcprjsangular2pilotklw'
 @ multi script-loader!./~/jquery/dist/jquery.js script-loader!./~/tether/dist/js/tether.js script-loader!./~/bootstrap/dist/js/bootstrap.js

ERROR in multi ./src/styles.css ./~/bootstrap/dist/css/bootstrap.css
Module not found: Error: Can't resolve 'F:srcprjsangular2pilotklwnode_modulesbootstrapdistcssbootstrap.css' in 'F:srcprjsangular2pilotklw'
 @ multi ./src/styles.css ./~/bootstrap/dist/css/bootstrap.css

ERROR in F:/src/prjs/angular2/pilot/klw/src/app/app.module.ts (8,25): Cannot find module '@ng-bootstrap/ng-bootstrap'.)

ERROR in ./src/app/app.module.ts
Module not found: Error: Can't resolve '@ng-bootstrap/ng-bootstrap' in 'F:srcprjsangular2pilotklwsrcapp'
 @ ./src/app/app.module.ts 15:0-55
 @ ./src/main.ts
 @ multi webpack-dev-server/client?http://localhost:4200/ ./src/main.ts
webpack: Failed to compile.