我正在做一个教程,涉及iframe src属性的设置:

<iframe width="100%" height="300" src="{{video.url}}"></iframe>

这会抛出一个异常:

Error: unsafe value used in a resource URL context
at DomSanitizationServiceImpl.sanitize...

我已经尝试使用[src]绑定,但没有成功。


当前回答

这对我很有用

我在iframe中定义了一个id

<iframe id="embeddedPage"></iframe>

在组件中,我使用了这段代码

export class YourComponent implements OnInit {
    
  constructor() {}

  ngOnInit(): void {
    const iframe =  document.getElementById('embeddedPage') as HTMLIFrameElement;
    iframe.contentWindow.location.replace('your url');
  }

}

其他回答

我也遇到过这个问题,但为了在我的angular模块中使用安全管道,我安装了安全管道npm包,你可以在这里找到。仅供参考,这在Angular 9.1.3中是有效的,我还没有在其他版本的Angular中尝试过。下面是如何一步一步地添加它:

Install the package via npm install safe-pipe or yarn add safe-pipe. This will store a reference to it in your dependencies in the package.json file, which you should already have from starting a new Angular project. Add SafePipeModule module to NgModule.imports in your Angular module file like so: import { SafePipeModule } from 'safe-pipe'; @NgModule({ imports: [ SafePipeModule ] }) export class AppModule { } Add the safe pipe to an element in the template for the Angular component you are importing into your NgModule this way:

<element [property]="value | safe: sanitizationType"></element>

下面是一些在html元素中使用safePipe的具体例子:

<div [style.background-image]="'url(' + pictureUrl + ')' | safe: 'style'" class="pic bg-pic"></div>
<img [src]="pictureUrl | safe: 'url'" class="pic" alt="Logo">
<iframe [src]="catVideoEmbed | safe: 'resourceUrl'" width="640" height="390"></iframe>
<pre [innerHTML]="htmlContent | safe: 'html'"></pre>

这样我就可以使用Angular 5.2.0了

fileName.Component.ts

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

@Component({
  selector: 'app-sample',
  templateUrl: './fileName.component.html',
  styleUrls: ['./fileName.component.scss']
})

export class FileName implements OnInit {
  @Input()
  url: string = "https://www.mmlpqtpkasjdashdjahd.com";
  urlSafe: SafeResourceUrl;

  constructor(public sanitizer: DomSanitizer) { }

  ngOnInit() {
    this.urlSafe= this.sanitizer.bypassSecurityTrustResourceUrl(this.url);
  }

}

fileName.Component.html

<iframe width="100%" height="100%" frameBorder="0" [src]="urlSafe"></iframe>

伙计们,就这些!!

constructor(
 public sanitizer: DomSanitizer, ) {

 }

我已经挣扎了4个小时。问题出在img标签。当你使用方括号的'src' ex: [src]。你不能使用这个角表达式{{}}。你只要直接从下面的实物例子给出。如果你给出角表达式{{}}。你会得到插值误差。

首先,我用ngFor来迭代国家 *ngFor="让国家中的国家" 然后你把这个放到img标签里。就是它了。 < img (src) = " sanitizer.bypassSecurityTrustResourceUrl (country.flag)” Height ="20" width="20" alt=""/> .

我通常添加单独的安全管道可重用组件如下

# Add Safe Pipe

import { Pipe, PipeTransform } from '@angular/core';
import { DomSanitizer } from '@angular/platform-browser';

@Pipe({name: 'mySafe'})
export class SafePipe implements PipeTransform {
    constructor(private sanitizer: DomSanitizer) {
    }

    public transform(url) {
        return this.sanitizer.bypassSecurityTrustResourceUrl(url);
    }
}
# then create shared pipe module as following 

import { NgModule } from '@angular/core'; 
import { SafePipe } from './safe.pipe';
@NgModule({
    declarations: [
        SafePipe
    ],
    exports: [
        SafePipe
    ]
})
export class SharedPipesModule {
}
# import shared pipe module in your native module

@NgModule({
    declarations: [],
    imports: [
        SharedPipesModule,
    ],
})
export class SupportModule {
}
<!-------------------
call your url (`trustedUrl` for me) and add `mySafe` as defined in Safe Pipe
---------------->
<div class="container-fluid" *ngIf="trustedUrl">
    <iframe [src]="trustedUrl | mySafe" align="middle" width="100%" height="800" frameborder="0"></iframe>
</div>

我将分享这个解决方案,即使这不是最佳实践,但它发生在我身上,我们不允许使用this. domsaniizer . bypasssecuritytrustresourceurl (url)解决方案,因为一个自动安全警告停止了CI/CD管道。

@Component({
  template: '<iframe #iframeRef></iframe>'
})
export class UnsafeUrlBypassIframeSampleComponent implements AfterViewInit {
  @ViewChild('iframeRef') iframe: ElementRef<HTMLIFrameElement>;
  
  constructor(private renderer: Renderer2) {}
  
  ngAfterViewInit() {
    const MY_UNSAFE_URL = '/path/to/something';
    this.renderer.setProperty(this.iframe.nativeElement, 'src', MY_UNSAFE_URL);
  }
}

如果你确实需要绕过Angular的安全系统,而这将不可避免地导致漏洞,那么最好明确地这样做。