解码angular 6中的html实体

import { Component, OnInit } from '@angular/core';
import { DomSanitizer, SafeHtml } from '@angular/platform-browser';

@Component({
  selector: 'app-decode-html',
  template: `
    <div [innerHTML]="decodedHtml"></div>
  `,
})
export class DecodeHtmlComponent implements OnInit {
  decodedHtml: SafeHtml;

  constructor(private sanitizer: DomSanitizer) {}

  ngOnInit() {
    const encodedHtml = '&lt;p&gt;This is an example &amp;lt;b&amp;gt;encoded&amp;lt;/b&amp;gt; HTML entity.&lt;/p&gt;';
    this.decodedHtml = this.sanitizer.bypassSecurityTrustHtml(encodedHtml);
  }
}