我服务器的响应如下:
[{"coreGoalId":1,"title":"Core goal 1","infrastructure":"Sample Infrastructure","audience":"People","subGoals":null,"benefits":[{"benefitId":1,"what":"string","coreGoalId":1}],"effects":null,"steps":null,"images":[{"imagelId":1,"base64":"/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAYEBQYFBAYGBQYHBwYIChAKCgkJChQODwwQFxQYGBcU\nFhYaHSUfGhsjHBYWICwgIyYnKSopGR8tMC0oMCUoKSj/2wBDAQcHBwoIChMKChMoGhYaKCgoKCgo\nKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCj/wgARCAIWAe4DASIA\nAhEBAxEB/8QAHAABAAIDAQEB"}]}]
我正在尝试显示其中返回的base64图像。
在我的组件中:
ngOnInit() {
this.homeService.getGoals()
.subscribe(
goals => this.coreGoals = goals,
error => this.errorMessage = <any>error);
}
然后在模板中:
<ul>
<li *ngFor="let goal of coreGoals">
{{goal.title}}
<img [src]="'data:image/jpg;base64,'+goal.images[0].base64 | safeHtml" />
</li>
</ul>
其中safeHtml是我创建的管道,如下所示:
import { Pipe } from '@angular/core';
import { DomSanitizer } from '@angular/platform-browser';
@Pipe({name: 'safeHtml'})
export class SafeHtml {
constructor(private sanitizer:DomSanitizer){}
transform(html) {
return this.sanitizer.bypassSecurityTrustHtml(html);
}
}
这给了我Required a safe URL, got a HTML
错误。这里出了什么问题?如果我从<img />
删除管道,则表示不安全的网址。
答案 0 :(得分:38)
你需要
bypassSecurityTrustResourceUrl(html);
而不是
bypassSecurityTrustHtml(html);
答案 1 :(得分:-1)
我有同样的问题。我们的申请&#39; X&#39;用于存储本地上传的图像,方法是在将它们保存到数据库之前将它们转换为base64(我们用于弹出初始数据,即 data:image / jpg; base64 )。在恢复显示时,我遇到了同样的问题。我曾经将弹出的数据连接到恢复的base64字符串。它曾经抛出上述错误。因此,我们决定存储整个转换后的字符串而不会弹出它,现在它的工作正常。看,如果它有帮助!