如何使用in 4和ng2-pdf-viewer修复"ERROR Error: Uncaught (in promise)：Error: Template parse errors“

Question

我已经导入了ng2-pdf-viewer并按照示例进行了设置，但是我得到了"ERROR Error: Uncaught (in promise)：Error: Template parse error：“错误。

我尝试将导入文件移动到home.ts，但也不起作用。我真的需要弄清楚这件事。

app.module.ts

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { RouteReuseStrategy } from '@angular/router';

import { IonicModule, IonicRouteStrategy } from '@ionic/angular';
import { SplashScreen } from '@ionic-native/splash-screen/ngx';
import { StatusBar } from '@ionic-native/status-bar/ngx';

import { AppComponent } from './app.component';
import { AppRoutingModule } from './app-routing.module';

import { PdfViewerModule } from 'ng2-pdf-viewer';

@NgModule({
  declarations: [AppComponent],
  entryComponents: [],
  imports: [BrowserModule, IonicModule.forRoot(), AppRoutingModule, PdfViewerModule],
  providers: [
    StatusBar,
    SplashScreen,
    PdfViewerModule,
    { provide: RouteReuseStrategy, useClass: IonicRouteStrategy }
  ],
  bootstrap: [AppComponent]
})
export class AppModule {}

home.html

<ion-header>
  <ion-toolbar>
    <ion-title>
      NG2-PDF-VIEWER
    </ion-title>
  </ion-toolbar>
</ion-header>

<ion-content>
  <pdf-viewer src="{{pdf}}" original-size="true" show-all="true"></pdf-viewer>
</ion-content>

home.ts

import { Component } from '@angular/core';

@Component({
  selector: 'app-home',
  templateUrl: 'home.page.html',
  styleUrls: ['home.page.scss'],
  providers: [ ]
})
export class HomePage {

  public pdf;
  constructor() {
    this.pdf = 'http://www.axmag.com/download/pdfurl-guide.pdf';
  }

}

这是我得到的完整错误：

ERROR Error: Uncaught (in promise): Error: Template parse errors:
Can't bind to 'src' since it isn't a known property of 'pdf-viewer'.
1. If 'pdf-viewer' is an Angular component and it has 'src' input, then verify that it is part of this module.
2. If 'pdf-viewer' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress this message.
3. To allow any property add 'NO_ERRORS_SCHEMA' to the '@NgModule.schemas' of this component. ("

<ion-content>
  <pdf-viewer [ERROR ->]src="{{pdf}}" original-size="true" show-all="true"></pdf-viewer>
</ion-content>
"): ng:///HomePageModule/HomePage.html@9:14
'pdf-viewer' is not a known element:
1. If 'pdf-viewer' is an Angular component, then verify that it is part of this module.
2. If 'pdf-viewer' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress this message. ("

<ion-content>
  [ERROR ->]<pdf-viewer src="{{pdf}}" original-size="true" show-all="true"></pdf-viewer>
</ion-content>
"): ng:///HomePageModule/HomePage.html@9:2
Error: Template parse errors:
Can't bind to 'src' since it isn't a known property of 'pdf-viewer'.
1. If 'pdf-viewer' is an Angular component and it has 'src' input, then verify that it is part of this module.
2. If 'pdf-viewer' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress this message.
3. To allow any property add 'NO_ERRORS_SCHEMA' to the '@NgModule.schemas' of this component. ("

<ion-content>
  <pdf-viewer [ERROR ->]src="{{pdf}}" original-size="true" show-all="true"></pdf-viewer>
</ion-content>
"): ng:///HomePageModule/HomePage.html@9:14
'pdf-viewer' is not a known element:

Answer 1

您需要将此模块(PDF查看器)准确导入到要使用其组件的模块中。

您可以在app.module.ts中找到它，但是需要通过使用它的模块来导入它