模板解析错误：“mdb-icon”不是已知元素

Posted 2023-02-22

【中文标题】模板解析错误：“mdb-icon”不是已知元素

【英文标题】：Template parse errors: 'mdb-icon' is not a known element

【发布时间】：2020-02-08 17:14:27

【问题描述】：

我正在使用带有 Bootstrap 4 的 Angular 7。 我在控制台中遇到错误。

未捕获的错误：模板解析错误：“mdb-icon”不是已知的 元素：

如果“mdb-icon”是一个 Angular 组件，则验证它是该模块的一部分。 如果“mdb-icon”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。 ("class="table-add float-right mb-3 mr-2"> [错误->] "): ng:///AppModule/AppComponent.html@9:10

app.module.ts-

import  BrowserModule  from '@angular/platform-browser';
import  NgModule  from '@angular/core';

import  AppRoutingModule  from './app-routing.module';
import  AppComponent  from './app.component';
import  MatTableModule, MatCheckboxModule  from '@angular/material'

@NgModule(
  declarations: [
    AppComponent
  ],
  imports: [
    BrowserModule,
    AppRoutingModule,
    MatTableModule,
    MatCheckboxModule
  ],
  providers: [],
  bootstrap: [AppComponent]
)
export class AppModule  

app.component.html

<div class="card">
  <h3 class="card-header text-center font-weight-bold text-uppercase py-4">Editable table</h3>
  <div class="card-body">
    <div id="table" class="table-editable">
      <span class="table-add float-right mb-3 mr-2">
        <a class="text-success" (click)="add()">
          <mdb-icon fas icon="plus" size="2x"></mdb-icon>
        </a>
      </span>
      <table class="table table-bordered table-responsive-md table-striped text-center">
        <tr>
          <th class="text-center">Person Name</th>
          <th class="text-center">Age</th>
          <th class="text-center">Company Name</th>
          <th class="text-center">Country</th>
          <th class="text-center">City</th>
          <th class="text-center">Sort</th>
          <th class="text-center">Remove</th>
        </tr>
        <tr *ngFor="let person of personList; let id = index">
          <td>
            <span (keyup)="changeValue(id, 'name', $event)" (blur)="updateList(id, 'name', $event)" contenteditable="true">person.name</span>
          </td>
          <td>
            <span contenteditable="true" (keyup)="changeValue(id, 'age', $event)" (blur)="updateList(id, 'age', $event)">person.age</span>
          </td>
          <td>
            <span contenteditable="true" (keyup)="changeValue(id, 'companyName', $event)" (blur)="updateList(id, 'companyName', $event)">person.companyName</span>
          </td>
          <td>
            <span contenteditable="true" (keyup)="changeValue(id, 'country', $event)" (blur)="updateList(id, 'country', $event)">person.country</span>
          </td>
          <td>
            <span contenteditable="true" (keyup)="changeValue(id, 'city', $event)" (blur)="updateList(id, 'city', $event)">person.city</span>
          </td>
          <td>
            <span class="table-up">
              <a class="indigo-text">
                <mdb-icon fas icon="long-arrow-alt-up"></mdb-icon>
              </a>
            </span>
            <span class="table-down">
              <a class="indigo-text">
                <mdb-icon fas icon="long-arrow-alt-down"></mdb-icon>
              </a>
            </span>
          </td>
          <td>
            <span class="table-remove">
              <button type="button" mdbBtn color="danger" rounded="true" size="sm" class="my-0" (click)="remove(id)">Remove</button>
            </span>
          </td>
        </tr>
      </table>
    </div>
  </div>
</div>
<!-- Editable table -->


<router-outlet></router-outlet>

angular.json-

  "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
  "version": 1,
  "newProjectRoot": "projects",
  "projects": 
    "AdminApp": 
      "root": "",
      "sourceRoot": "src",
      "projectType": "application",
      "prefix": "app",
      "schematics": ,
      "architect": 
        "build": 
          "builder": "@angular-devkit/build-angular:browser",
          "options": 
            "outputPath": "dist/AdminApp",
            "index": "src/index.html",
            "main": "src/main.ts",
            "polyfills": "src/polyfills.ts",
            "tsConfig": "src/tsconfig.app.json",
            "assets": [
              "src/favicon.ico",
              "src/assets"
            ],
            "styles": [
              "src/styles.css",
              "node_modules/@angular/material/prebuilt-themes/deeppurple-amber.css",
              "node_modules/bootstrap/dist/css/bootstrap.min.css"
            ],
            "scripts": [],
            "es5BrowserSupport": true
          ,
          "configurations": 
            "production": 
              "fileReplacements": [
                
                  "replace": "src/environments/environment.ts",
                  "with": "src/environments/environment.prod.ts"
                
              ],
              "optimization": true,
              "outputHashing": "all",
              "sourceMap": false,
              "extractCss": true,
              "namedChunks": false,
              "aot": true,
              "extractLicenses": true,
              "vendorChunk": false,
              "buildOptimizer": true,
              "budgets": [
                
                  "type": "initial",
                  "maximumWarning": "2mb",
                  "maximumError": "5mb"
                
              ]
            
          
        ,
        "serve": 
          "builder": "@angular-devkit/build-angular:dev-server",
          "options": 
            "browserTarget": "AdminApp:build"
          ,
          "configurations": 
            "production": 
              "browserTarget": "AdminApp:build:production"
            
          
        ,
        "extract-i18n": 
          "builder": "@angular-devkit/build-angular:extract-i18n",
          "options": 
            "browserTarget": "AdminApp:build"
          
        ,
        "test": 
          "builder": "@angular-devkit/build-angular:karma",
          "options": 
            "main": "src/test.ts",
            "polyfills": "src/polyfills.ts",
            "tsConfig": "src/tsconfig.spec.json",
            "karmaConfig": "src/karma.conf.js",
            "styles": [
              "src/styles.css"
            ],
            "scripts": [],
            "assets": [
              "src/favicon.ico",
              "src/assets"
            ]
          
        ,
        "lint": 
          "builder": "@angular-devkit/build-angular:tslint",
          "options": 
            "tsConfig": [
              "src/tsconfig.app.json",
              "src/tsconfig.spec.json"
            ],
            "exclude": [
              "**/node_modules/**"
            ]
          
        
      
    ,
    "AdminApp-e2e": 
      "root": "e2e/",
      "projectType": "application",
      "prefix": "",
      "architect": 
        "e2e": 
          "builder": "@angular-devkit/build-angular:protractor",
          "options": 
            "protractorConfig": "e2e/protractor.conf.js",
            "devServerTarget": "AdminApp:serve"
          ,
          "configurations": 
            "production": 
              "devServerTarget": "AdminApp:serve:production"
            
          
        ,
        "lint": 
          "builder": "@angular-devkit/build-angular:tslint",
          "options": 
            "tsConfig": "e2e/tsconfig.e2e.json",
            "exclude": [
              "**/node_modules/**"
            ]
          
        
      
    
  ,
  "defaultProject": "AdminApp"

【问题讨论】：

你在哪里添加引导库？我在你的app.module.ts 上没有看到它。

你错过了 import IconsModule from 'angular-bootstrap-md' Icons Module？

@AntoineClavijo 我已经使用 angular.json 全局添加了引导程序。

@SehaxX 我找不到'angular-bootstrap-md'，你能告诉它所在的模块

我的意思是你在哪里添加你的引导模块？

【参考方案1】：

要解决这个问题，只需添加：

import  MDBBootstrapModule  from 'angular-bootstrap-md'; 

并添加到您的进口清单。

MDBBootstrapModule.forRoot()