从头开始，安装节点，键入，角度cli并运行命令sudo ng new plzstart --mobile来创建项目，然后使用sudo ng build构建它(在对plzstart执行cd后)。
选择器"app-root"与任何元素都不匹配
构建命令引发以下异常：
Apples-MacBook-Pro:plzstart apple$ sudo ng build
Password:
(node:45348) fs: re-evaluating native module sources is not supported. If you are using the graceful-fs module, please update it to a more recent version.
Could not start watchman; falling back to NodeWatcher for file system events.
Visit http://ember-cli.com/user-guide/#watchman for more info.
⠸ BuildingEXCEPTION: Error in :0:0
ORIGINAL EXCEPTION: The selector "app-root" did not match any elements
ORIGINAL STACKTRACE:
Error: The selector "app-root" did not match any elements
at new BaseException (/Users/apple/PlzStart/node_modules/@angular/platform-browser/src/facade/exceptions.js:17:23)
at NodeDomRenderer.DomRenderer.selectRootElement (/Users/apple/PlzStart/node_modules/@angular/platform-browser/src/dom/dom_renderer.js:79:23)
at DebugDomRenderer.selectRootElement (/Users/apple/PlzStart/node_modules/@angular/core/src/debug/debug_renderer.js:19:39)
at DebugAppView.AppView.selectOrCreateHostElement (/Users/apple/PlzStart/node_modules/@angular/core/src/linker/view.js:88:41)
at DebugAppView._View_AppComponent_Host0.createInternal (AppComponent_Host.template.js:12:21)
at DebugAppView.AppView.create (/Users/apple/PlzStart/node_modules/@angular/core/src/linker/view.js:66:21)
at DebugAppView.create (/Users/apple/PlzStart/node_modules/@angular/core/src/linker/view.js:259:44)
at ComponentFactory.create (/Users/apple/PlzStart/node_modules/@angular/core/src/linker/component_factory.js:143:36)
at /Users/apple/PlzStart/node_modules/@angular/core/src/application_ref.js:314:44
at /Users/apple/PlzStart/node_modules/@angular/core/src/application_ref.js:292:26
at ZoneDelegate.invoke (/Users/apple/PlzStart/node_modules/zone.js/dist/zone-node.js:281:29)
at Object.NgZoneImpl.inner.inner.fork.onInvoke (/Users/apple/PlzStart/node_modules/@angular/core/src/zone/ng_zone_impl.js:45:41)
at ZoneDelegate.invoke (/Users/apple/PlzStart/node_modules/zone.js/dist/zone-node.js:280:35)
at Zone.run (/Users/apple/PlzStart/node_modules/zone.js/dist/zone-node.js:174:44)
at NgZoneImpl.runInner (/Users/apple/PlzStart/node_modules/@angular/core/src/zone/ng_zone_impl.js:76:71)
at NgZone.run (/Users/apple/PlzStart/node_modules/@angular/core/src/zone/ng_zone.js:223:66)
ERROR CONTEXT:
DebugContext {
_view:
DebugAppView {
clazz: [Function: _View_AppComponent_Host0],
componentType:
RenderComponentType {
id: 'knu-0',
templateUrl: '',
slotCount: 0,
encapsulation: 0,
styles: [] },
type: 0,
viewUtils:
ViewUtils {
_renderer: [Object],
_appId: 'knu',
_nextCompTypeId: 1,
sanitizer: DomSanitizationServiceImpl {} },
parentInjector:
ReflectiveInjector_ {
_debugContext: null,
_constructionCounter: 40,
_proto: [Object],
_parent: [Object],
_strategy: [Object] },
declarationAppElement: null,
cdMode: 2,
contentChildren: [],
viewChildren: [],
viewContainerElement: null,
cdState: 2,
destroyed: false,
ref: ViewRef_ { _view: [Circular] },
renderer: DebugDomRenderer { _delegate: [Object] },
staticNodeDebugInfos: [ [Object] ],
_currentDebugContext: [Circular],
context: {},
_hasExternalHostElement: true,
projectableNodes: [] },
_nodeIndex: 0,
_tplRow: 0,
_tplCol: 0 }
EXCEPTION: Error in :0:0
ORIGINAL EXCEPTION: The selector "app-root" did not match any elements
ORIGINAL STACKTRACE:
Error: The selector "app-root" did not match any elements
at new BaseException (/Users/apple/PlzStart/node_modules/@angular/platform-browser/src/facade/exceptions.js:17:23)
at NodeDomRenderer.DomRenderer.selectRootElement (/Users/apple/PlzStart/node_modules/@angular/platform-browser/src/dom/dom_renderer.js:79:23)
at DebugDomRenderer.selectRootElement (/Users/apple/PlzStart/node_modules/@angular/core/src/debug/debug_renderer.js:19:39)
at DebugAppView.AppView.selectOrCreateHostElement (/Users/apple/PlzStart/node_modules/@angular/core/src/linker/view.js:88:41)
at DebugAppView._View_AppComponent_Host0.createInternal (AppComponent_Host.template.js:12:21)
at DebugAppView.AppView.create (/Users/apple/PlzStart/node_modules/@angular/core/src/linker/view.js:66:21)
at DebugAppView.create (/Users/apple/PlzStart/node_modules/@angular/core/src/linker/view.js:259:44)
at ComponentFactory.create (/Users/apple/PlzStart/node_modules/@angular/core/src/linker/component_factory.js:143:36)
at /Users/apple/PlzStart/node_modules/@angular/core/src/application_ref.js:314:44
at /Users/apple/PlzStart/node_modules/@angular/core/src/application_ref.js:292:26
at ZoneDelegate.invoke (/Users/apple/PlzStart/node_modules/zone.js/dist/zone-node.js:281:29)
at Object.NgZoneImpl.inner.inner.fork.onInvoke (/Users/apple/PlzStart/node_modules/@angular/core/src/zone/ng_zone_impl.js:45:41)
at ZoneDelegate.invoke (/Users/apple/PlzStart/node_modules/zone.js/dist/zone-node.js:280:35)
at Zone.run (/Users/apple/PlzStart/node_modules/zone.js/dist/zone-node.js:174:44)
at NgZoneImpl.runInner (/Users/apple/PlzStart/node_modules/@angular/core/src/zone/ng_zone_impl.js:76:71)
at NgZone.run (/Users/apple/PlzStart/node_modules/@angular/core/src/zone/ng_zone.js:223:66)
ERROR CONTEXT:
DebugContext {
_view:
DebugAppView {
clazz: [Function: _View_AppComponent_Host0],
componentType:
RenderComponentType {
id: 'knu-0',
templateUrl: '',
slotCount: 0,
encapsulation: 0,
styles: [] },
type: 0,
viewUtils:
ViewUtils {
_renderer: [Object],
_appId: 'knu',
_nextCompTypeId: 1,
sanitizer: DomSanitizationServiceImpl {} },
parentInjector:
ReflectiveInjector_ {
_debugContext: null,
_constructionCounter: 40,
_proto: [Object],
_parent: [Object],
_strategy: [Object] },
declarationAppElement: null,
cdMode: 2,
contentChildren: [],
viewChildren: [],
viewContainerElement: null,
cdState: 2,
destroyed: false,
ref: ViewRef_ { _view: [Circular] },
renderer: DebugDomRenderer { _delegate: [Object] },
staticNodeDebugInfos: [ [Object] ],
_currentDebugContext: [Circular],
context: {},
_hasExternalHostElement: true,
projectableNodes: [] },
_nodeIndex: 0,
_tplRow: 0,
_tplCol: 0 }
ngOnInit Error: { [Error: EXCEPTION: Error in :0:0
ORIGINAL EXCEPTION: The selector "app-root" did not match any elements
ORIGINAL STACKTRACE:
Error: The selector "app-root" did not match any elements
at new BaseException (/Users/apple/PlzStart/node_modules/@angular/platform-browser/src/facade/exceptions.js:17:23)
at NodeDomRenderer.DomRenderer.selectRootElement (/Users/apple/PlzStart/node_modules/@angular/platform-browser/src/dom/dom_renderer.js:79:23)
at DebugDomRenderer.selectRootElement (/Users/apple/PlzStart/node_modules/@angular/core/src/debug/debug_renderer.js:19:39)
at DebugAppView.AppView.selectOrCreateHostElement (/Users/apple/PlzStart/node_modules/@angular/core/src/linker/view.js:88:41)
at DebugAppView._View_AppComponent_Host0.createInternal (AppComponent_Host.template.js:12:21)
at DebugAppView.AppView.create (/Users/apple/PlzStart/node_modules/@angular/core/src/linker/view.js:66:21)
at DebugAppView.create (/Users/apple/PlzStart/node_modules/@angular/core/src/linker/view.js:259:44)
at ComponentFactory.create (/Users/apple/PlzStart/node_modules/@angular/core/src/linker/component_factory.js:143:36)
at /Users/apple/PlzStart/node_modules/@angular/core/src/application_ref.js:314:44
at /Users/apple/PlzStart/node_modules/@angular/core/src/application_ref.js:292:26
at ZoneDelegate.invoke (/Users/apple/PlzStart/node_modules/zone.js/dist/zone-node.js:281:29)
at Object.NgZoneImpl.inner.inner.fork.onInvoke (/Users/apple/PlzStart/node_modules/@angular/core/src/zone/ng_zone_impl.js:45:41)
at ZoneDelegate.invoke (/Users/apple/PlzStart/node_modules/zone.js/dist/zone-node.js:280:35)
at Zone.run (/Users/apple/PlzStart/node_modules/zone.js/dist/zone-node.js:174:44)
at NgZoneImpl.runInner (/Users/apple/PlzStart/node_modules/@angular/core/src/zone/ng_zone_impl.js:76:71)
at NgZone.run (/Users/apple/PlzStart/node_modules/@angular/core/src/zone/ng_zone.js:223:66)
ERROR CONTEXT:
[object Object]]
_wrapperMessage: 'Error in :0:0',
_originalException:
{ Error: The selector "app-root" did not match any elements
at new BaseException (/Users/apple/PlzStart/node_modules/@angular/platform-browser/src/facade/exceptions.js:17:23)
at NodeDomRenderer.DomRenderer.selectRootElement (/Users/apple/PlzStart/node_modules/@angular/platform-browser/src/dom/dom_renderer.js:79:23)
at DebugDomRenderer.selectRootElement (/Users/apple/PlzStart/node_modules/@angular/core/src/debug/debug_renderer.js:19:39)
at DebugAppView.AppView.selectOrCreateHostElement (/Users/apple/PlzStart/node_modules/@angular/core/src/linker/view.js:88:41)
at DebugAppView._View_AppComponent_Host0.createInternal (AppComponent_Host.template.js:12:21)
at DebugAppView.AppView.create (/Users/apple/PlzStart/node_modules/@angular/core/src/linker/view.js:66:21)
at DebugAppView.create (/Users/apple/PlzStart/node_modules/@angular/core/src/linker/view.js:259:44)
at ComponentFactory.create (/Users/apple/PlzStart/node_modules/@angular/core/src/linker/component_factory.js:143:36)
at /Users/apple/PlzStart/node_modules/@angular/core/src/application_ref.js:314:44
at /Users/apple/PlzStart/node_modules/@angular/core/src/application_ref.js:292:26
at ZoneDelegate.invoke (/Users/apple/PlzStart/node_modules/zone.js/dist/zone-node.js:281:29)
at Object.NgZoneImpl.inner.inner.fork.onInvoke (/Users/apple/PlzStart/node_modules/@angular/core/src/zone/ng_zone_impl.js:45:41)
at ZoneDelegate.invoke (/Users/apple/PlzStart/node_modules/zone.js/dist/zone-node.js:280:35)
at Zone.run (/Users/apple/PlzStart/node_modules/zone.js/dist/zone-node.js:174:44)
at NgZoneImpl.runInner (/Users/apple/PlzStart/node_modules/@angular/core/src/zone/ng_zone_impl.js:76:71)
at NgZone.run (/Users/apple/PlzStart/node_modules/@angular/core/src/zone/ng_zone.js:223:66)
message: 'The selector "app-root" did not match any elements',
stack: 'Error: The selector "app-root" did not match any elementsn at new BaseException (/Users/apple/PlzStart/node_modules/@angular/platform-browser/src/facade/exceptions.js:17:23)n at NodeDomRenderer.DomRenderer.selectRootElement (/Users/apple/PlzStart/node_modules/@angular/platform-browser/src/dom/dom_renderer.js:79:23)n at DebugDomRenderer.selectRootElement (/Users/apple/PlzStart/node_modules/@angular/core/src/debug/debug_renderer.js:19:39)n at DebugAppView.AppView.selectOrCreateHostElement (/Users/apple/PlzStart/node_modules/@angular/core/src/linker/view.js:88:41)n at DebugAppView._View_AppComponent_Host0.createInternal (AppComponent_Host.template.js:12:21)n at DebugAppView.AppView.create (/Users/apple/PlzStart/node_modules/@angular/core/src/linker/view.js:66:21)n at DebugAppView.create (/Users/apple/PlzStart/node_modules/@angular/core/src/linker/view.js:259:44)n at ComponentFactory.create (/Users/apple/PlzStart/node_modules/@angular/core/src/linker/component_factory.js:143:36)n at /Users/apple/PlzStart/node_modules/@angular/core/src/application_ref.js:314:44n at /Users/apple/PlzStart/node_modules/@angular/core/src/application_ref.js:292:26n at ZoneDelegate.invoke (/Users/apple/PlzStart/node_modules/zone.js/dist/zone-node.js:281:29)n at Object.NgZoneImpl.inner.inner.fork.onInvoke (/Users/apple/PlzStart/node_modules/@angular/core/src/zone/ng_zone_impl.js:45:41)n at ZoneDelegate.invoke (/Users/apple/PlzStart/node_modules/zone.js/dist/zone-node.js:280:35)n at Zone.run (/Users/apple/PlzStart/node_modules/zone.js/dist/zone-node.js:174:44)n at NgZoneImpl.runInner (/Users/apple/PlzStart/node_modules/@angular/core/src/zone/ng_zone_impl.js:76:71)n at NgZone.run (/Users/apple/PlzStart/node_modules/@angular/core/src/zone/ng_zone.js:223:66)' },
_originalStack: 'Error: The selector "app-root" did not match any elementsn at new BaseException (/Users/apple/PlzStart/node_modules/@angular/platform-browser/src/facade/exceptions.js:17:23)n at NodeDomRenderer.DomRenderer.selectRootElement (/Users/apple/PlzStart/node_modules/@angular/platform-browser/src/dom/dom_renderer.js:79:23)n at DebugDomRenderer.selectRootElement (/Users/apple/PlzStart/node_modules/@angular/core/src/debug/debug_renderer.js:19:39)n at DebugAppView.AppView.selectOrCreateHostElement (/Users/apple/PlzStart/node_modules/@angular/core/src/linker/view.js:88:41)n at DebugAppView._View_AppComponent_Host0.createInternal (AppComponent_Host.template.js:12:21)n at DebugAppView.AppView.create (/Users/apple/PlzStart/node_modules/@angular/core/src/linker/view.js:66:21)n at DebugAppView.create (/Users/apple/PlzStart/node_modules/@angular/core/src/linker/view.js:259:44)n at ComponentFactory.create (/Users/apple/PlzStart/node_modules/@angular/core/src/linker/component_factory.js:143:36)n at /Users/apple/PlzStart/node_modules/@angular/core/src/application_ref.js:314:44n at /Users/apple/PlzStart/node_modules/@angular/core/src/application_ref.js:292:26n at ZoneDelegate.invoke (/Users/apple/PlzStart/node_modules/zone.js/dist/zone-node.js:281:29)n at Object.NgZoneImpl.inner.inner.fork.onInvoke (/Users/apple/PlzStart/node_modules/@angular/core/src/zone/ng_zone_impl.js:45:41)n at ZoneDelegate.invoke (/Users/apple/PlzStart/node_modules/zone.js/dist/zone-node.js:280:35)n at Zone.run (/Users/apple/PlzStart/node_modules/zone.js/dist/zone-node.js:174:44)n at NgZoneImpl.runInner (/Users/apple/PlzStart/node_modules/@angular/core/src/zone/ng_zone_impl.js:76:71)n at NgZone.run (/Users/apple/PlzStart/node_modules/@angular/core/src/zone/ng_zone.js:223:66)',
_context:
DebugContext {
_view:
DebugAppView {
clazz: [Function: _View_AppComponent_Host0],
componentType: [Object],
type: 0,
viewUtils: [Object],
parentInjector: [Object],
declarationAppElement: null,
cdMode: 2,
contentChildren: [],
viewChildren: [],
viewContainerElement: null,
cdState: 2,
destroyed: false,
ref: [Object],
renderer: [Object],
staticNodeDebugInfos: [Object],
_currentDebugContext: [Circular],
context: {},
_hasExternalHostElement: true,
projectableNodes: [] },
_nodeIndex: 0,
_tplRow: 0,
_tplCol: 0 },
_wrapperStack: 'Error: Error in :0:0n at ViewWrappedException.WrappedException [as constructor] (/Users/apple/PlzStart/node_modules/@angular/core/src/facade/exceptions.js:34:31)n at new ViewWrappedException (/Users/apple/PlzStart/node_modules/@angular/core/src/linker/exceptions.js:59:16)n at DebugAppView._rethrowWithContext (/Users/apple/PlzStart/node_modules/@angular/core/src/linker/view.js:306:23)n at DebugAppView.create (/Users/apple/PlzStart/node_modules/@angular/core/src/linker/view.js:262:18)n at ComponentFactory.create (/Users/apple/PlzStart/node_modules/@angular/core/src/linker/component_factory.js:143:36)n at /Users/apple/PlzStart/node_modules/@angular/core/src/application_ref.js:314:44n at /Users/apple/PlzStart/node_modules/@angular/core/src/application_ref.js:292:26n at ZoneDelegate.invoke (/Users/apple/PlzStart/node_modules/zone.js/dist/zone-node.js:281:29)n at Object.NgZoneImpl.inner.inner.fork.onInvoke (/Users/apple/PlzStart/node_modules/@angular/core/src/zone/ng_zone_impl.js:45:41)n at ZoneDelegate.invoke (/Users/apple/PlzStart/node_modules/zone.js/dist/zone-node.js:280:35)n at Zone.run (/Users/apple/PlzStart/node_modules/zone.js/dist/zone-node.js:174:44)n at NgZoneImpl.runInner (/Users/apple/PlzStart/node_modules/@angular/core/src/zone/ng_zone_impl.js:76:71)n at NgZone.run (/Users/apple/PlzStart/node_modules/@angular/core/src/zone/ng_zone.js:223:66)n at ApplicationRef_.run (/Users/apple/PlzStart/node_modules/@angular/core/src/application_ref.js:290:14)n at ApplicationRef_.bootstrap (/Users/apple/PlzStart/node_modules/@angular/core/src/application_ref.js:312:21)n at /Users/apple/PlzStart/node_modules/@angular/core/src/application_ref.js:100:50' }
Rendering Document Error: TypeError: Cannot read property '0' of undefined
at /Users/apple/PlzStart/node_modules/angular2-universal/dist/node/bootloader.js:132:38
at ZoneDelegate.invoke (/Users/apple/PlzStart/node_modules/zone.js/dist/zone-node.js:281:29)
at Zone.run (/Users/apple/PlzStart/node_modules/zone.js/dist/zone-node.js:174:44)
at /Users/apple/PlzStart/node_modules/zone.js/dist/zone-node.js:529:58
at ZoneDelegate.invokeTask (/Users/apple/PlzStart/node_modules/zone.js/dist/zone-node.js:314:38)
at Zone.runTask (/Users/apple/PlzStart/node_modules/zone.js/dist/zone-node.js:214:48)
at drainMicroTaskQueue (/Users/apple/PlzStart/node_modules/zone.js/dist/zone-node.js:432:36)
at process._tickCallback (internal/process/next_tick.js:103:7)
Built project successfully. Stored in "dist/".
关于这是什么原因的任何线索？
在开始一个新项目后，我遇到了同样的问题：ng new NAME --mobile之后我就这样做了：
- rm -fR 名称(完全删除项目文件夹并重新开始)
- ng new --mobile NAME --skip-npm(跳过 npm 步骤并稍后手动执行)
- 光盘名称
- 将Angular2-univeral版本从package.json中的0.101.5更改为
"angular2-universal": "^0.100.3" - npm 安装(现在我们手动执行 npm)
- 吴恩达
- 吴恩达服务器
这次一切都很顺利。我希望这也对您有所帮助，让我知道，谢谢！