Angular 2 禁用消毒 [英] Angular 2 disable sanitize

问题描述

我正在尝试将 base64 字符串呈现为 <img src='data:image/png;base64,${Here}'.

I am trying to render base64 string into <img src='data:image/png;base64,${Here}'.

但总是当我尝试渲染它时，ng2 在渲染它之前清理我的 base64 字符串，在将它显示在 DOM 中之前将它添加到我的值中.我找到了解决方法(使用 DomSanitizer)，但它不适用于最新版本.

But always when I try to render it, ng2 sanitizing my base64 string before rendering it adds something into my value before showing it in DOM. I have found workaround(using DomSanitizer) but it doesn't work on latest versions.

这是我的标记:

<img alt="RegularImage" src="data:image/png;base64,{{imgBase64}}">

这是我的组成部分:

imgBase64="SomeBase64StringFetchedSomehow";

但是 angular2 显示在控制台下一条消息 - 警告:清理不安全的 URL 值

But angular2 is showing in console next message - WARNING: sanitizing unsafe URL value

如何防止 NG2 清理我的 base64 字符串?

How to prevent NG2 from sanitizing my base64 string?

更新

get getImg() {
    return this._sanitizer.sanitize(SecurityContext.URL,`data:image/png;base64,${this.img}`);
}

不能解决这个问题.DomSanitizer 类在 RC6 中不再存在

Doesn't solve this issue. DomSanitizer class does not exists anymore in RC6

推荐答案

经过几个小时的研究，我终于发现在最新版本的 ng2 中没有可以使用 DI 注入的 DomSanitizer，但是有 Sanitizer.所以这里是用法:

After few hours of researches I have finally found that in latest version of ng2 there is no DomSanitizer that can be injected using DI, however there is Sanitizer. So here is the usage:

constructor( private _sanitizer: Sanitizer){
}

get getImg() {
    return this._sanitizer.sanitize(SecurityContext.URL, `data:image/png;base64,${this.img}`);
}

<input src="{{getImg}}"/>

如您所见，sanitize 方法的第一个参数是 SecurityContext 实例，它基本上是枚举.所以现在 Sanitizer 是一个工厂，它根据 SecurityContext

As you can see first argument of sanitize method is SecurityContext instance, which basically is enum. So right now Sanitizer is a factory which choose the implementation to use based on SecurityContext

就我而言，我遇到了一个问题，我的 base64 在此之前就已经过消毒，这就是为什么我无法让它工作的原因.

In my case I had a problem that my base64 was sanitized before that get, that why I was not able to get it working.

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