Javascript 角度2。无法将一个组件插入到另一个组件。模板分析错误：…不是已知元素

我试图重复教程中的操作，将一个组件添加到另一个组件中，但失败了

项目结构：

app.component.ts:

import {Component} from "@angular/core"
import {TodoListComponent} from "./todo-list/todo-list.component"

....
@Component({
    moduleId: module.id,
    selector: "app",
    templateUrl: "app.component.html",
    styleUrls: ['app.component.css'],
    directives:[ TodoListComponent ]
})
export class AppComponent {
   ...
}

app.component.html：

...
<todo-list ></todo-list> <!--[todos]="todos"-->
...

待办事项列表.component.html

ololololo

Rmain.ts

import {Component, Input} from "@angular/core"
//import {Input} from "../../node_modules/@angular/core/src/metadata/directives";

@Component({
    selector: "todo-list",
    templateUrl: "./app/todo/todo-list.component.html"
})
export class TodoListComponent {
    //@Input() todos:Todo[];
}

import {platformBrowserDynamic} from "@angular/platform-browser-dynamic";

import {AppModule} from "./app.module";

const platform = platformBrowserDynamic();
platform.bootstrapModule(AppModule);

import {BrowserModule} from "@angular/platform-browser";
import {NgModule} from "@angular/core";
import {AppComponent} from "./app.component"
import {FormsModule} from "@angular/forms";

@NgModule({
    imports: [BrowserModule, FormsModule],
    declarations: [AppComponent],
    bootstrap: [AppComponent]
})
export class AppModule {

}

应用程序模块.ts

import {Component, Input} from "@angular/core"
//import {Input} from "../../node_modules/@angular/core/src/metadata/directives";

@Component({
    selector: "todo-list",
    templateUrl: "./app/todo/todo-list.component.html"
})
export class TodoListComponent {
    //@Input() todos:Todo[];
}

import {platformBrowserDynamic} from "@angular/platform-browser-dynamic";

import {AppModule} from "./app.module";

const platform = platformBrowserDynamic();
platform.bootstrapModule(AppModule);

import {BrowserModule} from "@angular/platform-browser";
import {NgModule} from "@angular/core";
import {AppComponent} from "./app.component"
import {FormsModule} from "@angular/forms";

@NgModule({
    imports: [BrowserModule, FormsModule],
    declarations: [AppComponent],
    bootstrap: [AppComponent]
})
export class AppModule {

}

我打开浏览器，看到以下内容：

zone.js:388 Unhandled Promise rejection: Template parse errors:
'todo-list' is not a known element:
1. If 'todo-list' is an Angular component, then verify that it is part of this module.
2. If 'todo-list' is a Web Component then add "CUSTOM_ELEMENTS_SCHEMA" to the '@NgModule.schemas' of this component to suppress this message. ("lass="todo-item" *ngFor="let todo of todos" [ngClass]="{'completed': todo.completed }">-->
        [ERROR ->]<todo-list ></todo-list> <!--[todos]="todos"-->
    </section>
</main>
"): AppComponent@14:8 ; Zone: <root> ; Task: Promise.then ; Value: Error: Template parse errors:(…) Error: Template parse errors:
'todo-list' is not a known element:
1. If 'todo-list' is an Angular component, then verify that it is part of this module.
2. If 'todo-list' is a Web Component then add "CUSTOM_ELEMENTS_SCHEMA" to the '@NgModule.schemas' of this component to suppress this message. ("lass="todo-item" *ngFor="let todo of todos" [ngClass]="{'completed': todo.completed }">-->
        [ERROR ->]<todo-list ></todo-list> <!--[todos]="todos"-->
    </section>
</main>
"): AppComponent@14:8
    at TemplateParser.parse (http://localhost:3000/node_modules/@angular/compiler/bundles/compiler.umd.js:7728:21)
    at RuntimeCompiler._compileTemplate (http://localhost:3000/node_modules/@angular/compiler/bundles/compiler.umd.js:17503:53)
    at eval (http://localhost:3000/node_modules/@angular/compiler/bundles/compiler.umd.js:17423:64)
    at Set.forEach (native)
    at RuntimeCompiler._compileComponents (http://localhost:3000/node_modules/@angular/compiler/bundles/compiler.umd.js:17423:21)
    at createResult (http://localhost:3000/node_modules/@angular/compiler/bundles/compiler.umd.js:17319:21)
    at ZoneDelegate.invoke (http://localhost:3000/node_modules/zone.js/dist/zone.js:232:26)
    at Zone.run (http://localhost:3000/node_modules/zone.js/dist/zone.js:114:43)
    at http://localhost:3000/node_modules/zone.js/dist/zone.js:502:57
    at ZoneDelegate.invokeTask (http://localhost:3000/node_modules/zone.js/dist/zone.js:265:35)consoleError @ zone.js:388_loop_1 @ zone.js:417drainMicroTaskQueue @ zone.js:421ZoneTask.invoke @ zone.js:339
zone.js:390 Error: Uncaught (in promise): Error: Template parse errors:(…)consoleError @ zone.js:390_loop_1 @ zone.js:417drainMicroTaskQueue @ zone.js:421ZoneTask.invoke @ zone.js:339

zone.js:388未处理的承诺拒绝：模板分析错误：
“待办事项列表”不是已知元素：
1.如果“待办事项列表”是一个角度组件，请确认它是此模块的一部分。
2.如果“todo list”是Web组件，则将“CUSTOM_ELEMENTS_SCHEMA”添加到此组件的“@NgModule.schemas”以抑制此消息。（“lass=“todo item”*ngFor=“let todo of todo”[ngClass]=“{'completed'：todo.completed}”>-->
[错误->]
"): AppComponent@14:8 ; 区域：；任务：承诺；值：错误：模板分析错误：（…）错误：模板分析错误：
“待办事项列表”不是已知元素：
1.如果“待办事项列表”是一个角度组件，请确认它是此模块的一部分。
2.如果“todo list”是Web组件，则将“CUSTOM_ELEMENTS_SCHEMA”添加到此组件的“@NgModule.schemas”以抑制此消息。（“lass=“todo item”*ngFor=“let todo of todo”[ngClass]=“{'completed'：todo.completed}”>-->
[错误->]
"): AppComponent@14:8
在TemplateParser.parse(http://localhost:3000/node_modules/@angular/compiler/bundles/compiler.umd.js:7728:21）
在运行时编译器上(http://localhost:3000/node_modules/@angular/compiler/bundles/compiler.umd.js:17503:53）
评估时(http://localhost:3000/node_modules/@angular/compiler/bundles/compiler.umd.js:17423:64）
at Set.forEach（本机）
在运行时编译器上(http://localhost:3000/node_modules/@angular/compiler/bundles/compiler.umd.js:17423:21）
在createResult(http://localhost:3000/node_modules/@angular/compiler/bundles/compiler.umd.js:17319:21）
在ZoneDelegate.invoke(http://localhost:3000/node_modules/zone.js/dist/zone.js:232:26)
在Zone.run(http://localhost:3000/node_modules/zone.js/dist/zone.js:114:43)
在http://localhost:3000/node_modules/zone.js/dist/zone.js:502:57
在ZoneDelegate.invokeTask(http://localhost:3000/node_modules/zone.js/dist/zone.js:265:35)consoleError@zone.js:388_loop_1@zone.js:417drainMicroTaskQueue@zone.js:421ZoneTask.invoke@zone.js:339
zone.js:390错误：未捕获（承诺中）：错误：模板解析错误：（…）consoleError@zone.js:390_loop_1@zone.js:417drainMicroTaskQueue@zone.js:421ZoneTask.invoke@zone.js:339

---

请给我指出错误。我反复检查了几次教程，没有发现错误。

从

AppComponent

声明中删除

指令：[TodoListComponent]

，并将此组件的声明添加到模块中，如下所示：

declarations: [AppComponent, TodoListComponent],

将todo-list.component.ts的Url更改为

@Component({
    selector: "todo-list",
    templateUrl: "./app/todo-list/todo-list.component.html"
})

---

从

AppComponent

声明中删除

指令：[TodoListComponent]

，并将此组件的声明添加到模块中，如下所示：

declarations: [AppComponent, TodoListComponent],

将todo-list.component.ts的Url更改为

@Component({
    selector: "todo-list",
    templateUrl: "./app/todo-list/todo-list.component.html"
})

---

删除app.component.ts中的字段“directives”，并在app.module.ts的声明中添加“TodoListComponent”

你的app.module.ts

import {BrowserModule} from "@angular/platform-browser";
import {NgModule} from "@angular/core";
import {AppComponent} from "./app.component"
import {TodoListComponent} from "./todo-list/todo-list.component"
import {FormsModule} from "@angular/forms";

@NgModule({
    imports: [BrowserModule, FormsModule],
    declarations: [AppComponent, TodoListComponent],
    bootstrap: [AppComponent]
})
export class AppModule {

}

---

删除app.component.ts中的字段“directives”，并在app.module.ts的声明中添加“TodoListComponent”

你的app.module.ts

import {BrowserModule} from "@angular/platform-browser";
import {NgModule} from "@angular/core";
import {AppComponent} from "./app.component"
import {TodoListComponent} from "./todo-list/todo-list.component"
import {FormsModule} from "@angular/forms";

@NgModule({
    imports: [BrowserModule, FormsModule],
    declarations: [AppComponent, TodoListComponent],
    bootstrap: [AppComponent]
})
export class AppModule {

}

---

@Joel-Almeida的可能副本我在教程中没有看到这一点你是如何声明你的模块的？@Joel-Almeida如果我理解你的意思，请更正Rmain.ts中包含的这一信息你能提供你的

AppModule

代码吗？可能的副本@Joel-Almeida我在教程中没有看到这一点你是如何声明你的模块的？@Joel-Almeida如果我了解您是否更正了Rmain.ts中包含的此OnFormation您能否提供您的

AppModule

代码？