解析模板时出错：意外的结束标记 app-post-list

Posted 2023-03-24

【中文标题】解析模板时出错：意外的结束标记 app-post-list

【英文标题】：Errors parsing template: Unexpected closing tag app-post-list

【发布时间】：2020-07-13 16:35:14

【问题描述】：

当我尝试以角度输出我的帖子时出现错误。请帮忙解决这个问题...

错误信息

解析模板时出错：意外的结束标记“app-post-list”。

我的 post-list.component.ts 代码

import  Component  from "@angular/core";

@Component(
selector: 'aap-post-list',
templateUrl: './post-list.component.html'
)

export class PostListComponent 

我的 post-list.component.html

<mat-accordion>
   <mat-expansion-panel>
    <mat-expansion-panel-header>
      The expansion title!
    </mat-expansion-panel-header>
    <p>I'm in an expansion panel!</p>
   </mat-expansion-panel>
</mat-accordion>

app.component.html 代码

<app-header></app-header>
<main>
  <app-post-create></app-post-create>
  <aap-post-list></app-post-list>
</main>

app.module.ts

import  BrowserModule  from '@angular/platform-browser';
import  BrowserAnimationsModule  from '@angular/platform-browser/animations';
import  NgModule  from '@angular/core';
import  FormsModule  from '@angular/forms';
import  MatInputModule from '@angular/material/input';
import  MatCardModule from '@angular/material/card';
import  MatButtonModule  from '@angular/material/button';
import  MatToolbarModule  from '@angular/material/toolbar';
import  MatExpansionModule  from '@angular/material/expansion';
import  AppComponent  from './app.component';
import PostCreateComponent from './posts/post-create/post-create.component';
import  HeaderComponent  from './header/header.component';
import  PostListComponent  from './posts/post-list/post-list.component';
import  from  from 'rxjs';

@NgModule(
declarations: [
AppComponent,
PostCreateComponent,
HeaderComponent,
PostListComponent
],
imports: [
BrowserModule,
FormsModule,
BrowserAnimationsModule,
MatInputModule,
MatCardModule,
MatButtonModule,
MatToolbarModule,
MatExpansionModule
],
providers: [],
bootstrap: [AppComponent]
)
export class AppModule  

app.component.spec.ts

import  TestBed, async  from '@angular/core/testing';
import  AppComponent  from './app.component';
import  PostListComponent  from './posts/post-list/post-list.component';

describe('AppComponent', () => 
beforeEach(async(() => 
TestBed.configureTestingModule(
  declarations: [
    AppComponent,
    PostListComponent
  ],
).compileComponents();
));

it('should create the app', () => 
const fixture = TestBed.createComponent(AppComponent);
const app = fixture.componentInstance;
expect(app).toBeTruthy();
);

it(`should have as title 'mean-learning'`, () => 
const fixture = TestBed.createComponent(AppComponent);
const app = fixture.componentInstance;
expect(app.title).toEqual('mean-learning');
);

it('should render title', () => 
const fixture = TestBed.createComponent(AppComponent);
fixture.detectChanges();
const compiled = fixture.nativeElement;
expect(compiled.querySelector('.content span').textContent).toContain('mean-learning app is running!');
);
);

请让我知道我错在哪里以及如何解决这个问题。

【问题讨论】：

这是一个错字。在 app.component.html 中，将 <aap-post-list></app-post-list> 替换为 <aap-post-list></aap-post-list>。更好的是，将组件选择器更改为app-post-list。

如果问题解决请点击答案上的已解决图标

现在我收到此错误消息 src/app/app.component.html:4:5 - error NG8001: 'app-post-list' is not a known element: If 'app-post- list' 是一个 Angular 组件，然后验证它是这个模块的一部分。如果“app-post-list”是一个 Web 组件，则将“CUSTOM_ELEMENTS_SCHEMA”添加到该组件的“@NgModule.schemas”以禁止显示此消息。 src/app/app.component.ts:5:16 templateUrl: './app.component.html', 组件AppComponent的模板出错。

【参考方案1】：

您好，您在 4 的行号中做了 Typo，将 <aap-post-list> 更改为 <app-post-list> 问题已解决。

app.component.html 代码

<app-header></app-header>
<main>
  <app-post-create></app-post-create>
  <aap-post-list></app-post-list>
</main>

更新

你已经改变了<aap-post-list> to <app-post-list>所以现在回到

post-list.component.ts

现在将 选择器 更改为

从“@angular/core”导入组件；

@Component(
selector: 'aap-post-list',
templateUrl: './post-list.component.html'
)

export class PostListComponent 

到

从“@angular/core”导入组件；

@Component(
selector: 'app-post-list',
templateUrl: './post-list.component.html'
)

export class PostListComponent 

现在应该可以正常使用了

【讨论】：

先生，谢谢你的回答我改变了它，但现在我收到这条消息 app-post-list' is not a known element 如果'app-post-list' 是一个 Angular 组件，那么验证它是这个模块的一部分。如果“app-post-list”是一个 Web 组件，则将“CUSTOM_ELEMENTS_SCHEMA”添加到该组件的“@NgModule.schemas”以禁止显示此消息。

您将组件声明为aap-post-list。所以你也应该改变声明（选择器）。

将选择器：'aap-post-list'，改为'app-post-list'

@NaveenKumar 对不起，我没有得到你的答案，请解释一下

@ayushflitzip 现在检查我的答案