- ممکن هست که قبلا تنظیمات proxy را فعال کردید. باید آنها را ابتدا غیرفعال کنید.
- همچنین DNSهای شکن را هم امتحان کنید:
using Microsoft.AspNetCore.Mvc; namespace AngularTemplateDrivenFormsLab.Controllers { [Route("api/[controller]")] public class ShowImagesController : Controller { [HttpGet("[action]")] public IActionResult GetImage() { return File("~/assets/resume.png", "image/png"); } } }
import { Injectable } from "@angular/core"; import { Observable } from "rxjs/Observable"; import { HttpClient } from "@angular/common/http"; @Injectable() export class DownloadBinaryDataService { constructor(private httpClient: HttpClient) { } public getImage(): Observable<Blob> { return this.httpClient.get("/api/ShowImages/GetImage", { responseType: "blob" }); } }
import { Injectable } from "@angular/core"; function getWindow(): any { return window; } @Injectable() export class WindowRefService { get nativeWindow(): any { return getWindow(); } }
import { WindowRefService } from "./window.service"; @NgModule({ providers: [ WindowRefService ] }) export class CoreModule {}
const urlCreator = this.nativeWindow.URL; imageBlobUrl = urlCreator.createObjectURL(imageDataBlob);
<img src="blob:http://localhost:5000/9d4bae44-00bc-4ed8-9f27-cac2de5ecd5d">
img-src 'self' data: blob:
import { WindowRefService } from "./../../core/window.service"; import { DownloadBinaryDataService } from "app/angular-http-client-blob/download-binary-data.service"; import { Component, OnInit, ViewChild, ElementRef } from "@angular/core"; import { DomSanitizer, SafeUrl } from "@angular/platform-browser"; @Component({ templateUrl: "./download-blobs.component.html", styleUrls: ["./download-blobs.component.css"] }) export class DownloadBlobsComponent implements OnInit { @ViewChild("sampleImage1") sampleImage1: ElementRef; private nativeWindow: Window; imageBlobUrl: string; sanitizedImageBlobUrl: SafeUrl; constructor(private downloadService: DownloadBinaryDataService, private windowRefService: WindowRefService, private sanitizer: DomSanitizer) { } ngOnInit() { this.nativeWindow = this.windowRefService.nativeWindow; this.downloadService.getImage().subscribe(imageDataBlob => { const urlCreator = this.nativeWindow.URL; this.imageBlobUrl = urlCreator.createObjectURL(imageDataBlob); // doesn't work -> <img [src]="imageBlobUrl"> this.sampleImage1.nativeElement.src = this.imageBlobUrl; // works -> <img #sampleImage1> this.sanitizedImageBlobUrl = this.sanitizer.bypassSecurityTrustUrl(this.imageBlobUrl); // works -> <img [src]="sanitizedImageBlobUrl"> }); } }
<h1>Angular HttpClient Blob</h1> <h4>#sampleImage1</h4> <img #sampleImage1> <h4>imageBlobUrl</h4> <img [src]="imageBlobUrl"> <h4>sanitizedImageBlobUrl</h4> <img [src]="sanitizedImageBlobUrl">
this.imageBlobUrl = urlCreator.createObjectURL(imageDataBlob); // doesn't work -> <img [src]="imageBlobUrl">
<h4>imageBlobUrl</h4> <img [src]="imageBlobUrl">
<img _ngcontent-c1="" src="unsafe:blob:http://localhost:5000/a4505339-5da2-4303-949c-8e6a7cfff2fc">
Refused to load the image 'unsafe:blob:http://localhost:5000/a4505339-5da2-4303-949c-8e6a7cfff2fc' because it violates the following Content Security Policy directive: "img-src 'self' data: blob:".
this.sanitizedImageBlobUrl = this.sanitizer.bypassSecurityTrustUrl(this.imageBlobUrl); // works -> <img [src]="sanitizedImageBlobUrl">
<img [src]="sanitizedImageBlobUrl">
<img _ngcontent-c1="" src="blob:http://localhost:5000/a4505339-5da2-4303-949c-8e6a7cfff2fc">
<img #sampleImage1>
@ViewChild("sampleImage1") sampleImage1: ElementRef;
this.sampleImage1.nativeElement.src = this.imageBlobUrl; // works -> <img #sampleImage1>
<ng-component _nghost-c1=""><h1 _ngcontent-c1="">Angular HttpClient Blob</h1> <h4 _ngcontent-c1="">#sampleImage1</h4> <img _ngcontent-c1="" src="blob:http://localhost:5000/a4505339-5da2-4303-949c-8e6a7cfff2fc"> <h4 _ngcontent-c1="">imageBlobUrl</h4> <img _ngcontent-c1="" src="unsafe:blob:http://localhost:5000/a4505339-5da2-4303-949c-8e6a7cfff2fc"> <h4 _ngcontent-c1="">sanitizedImageBlobUrl</h4> <img _ngcontent-c1="" src="blob:http://localhost:5000/a4505339-5da2-4303-949c-8e6a7cfff2fc"> </ng-component>
FROM scratch COPY hello / CMD ["/hello"]
FROM mcr.microsoft.com/windows/nanoserver:1809 COPY hello.txt C: CMD ["cmd", "/C", "type C:\\hello.txt"]
[Authorize(Roles = @"<domain>\<group>")]