1
我在使用angular2從spring啓動下載文件時出現問題。春季啓動Angular2文件下載不起作用
這是我的代碼從春季啓動，它來自：Return generated pdf using spring MVC。我可以dirrectly下載文件，郵遞員，但不能與angular2 ...
@RequestMapping(value="/file/{id}", method=RequestMethod.GET)
public ResponseEntity<?> getFile(@PathVariable("id") long id) {
UploadFile uFile = uploadFileService.getUploadFileById(id);
byte[] contents = uFile.getContent();
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.parseMediaType("application/pdf"));
headers.setContentDispositionFormData(uFile.getName(), uFile.getName());
headers.setCacheControl("must-revalidate, post-check=0, pre-check=0");
return new ResponseEntity<byte[]>(contents, headers, HttpStatus.OK);
}
Angular2服務
downloadFile(id: number){
let headers = new Headers({'Content-Type': 'application/pdf', 'Accept': 'application/pdf'});
headers.append('Authorization',this.auth.token);
let options = new RequestOptions({ headers: headers, responseType: ResponseContentType.Blob});
return this.http.get(this.editUrl + id, options)
.map(res => {return new Blob([res.blob()],{ type: 'application/pdf' })});
}
和下載按鈕
downloadFile(uFile: UploadFile){
this.uploadFileService.downloadFile(uFile.id)
.subscribe(
data => window.open(URL.createObjectURL(data)),
);
return false;
}
當我點擊下載按鈕打開Chrome瀏覽器新標籤頁，立即關閉它不顯示任何文件。 這裏是郵差的一些響應標題。
Access-Control-Allow-Headers →Content-Type, x-requested-with, Authorization, responseType
Access-Control-Allow-Methods →POST, PUT, GET, PATCH, OPTIONS, DELETE
Access-Control-Allow-Origin →http://localhost:4200
Access-Control-Max-Age →3600
Cache-Control →must-revalidate, post-check=0, pre-check=0
Content-Disposition →form-data; name="reference.pdf"; filename="reference.pdf"
Content-Length →31576
Content-Type →application/pdf
Date →Mon, 27 Mar 2017 08:39:24 GMT
X-Content-Type-Options →nosniff
X-Frame-Options →DENY
X-XSS-Protection →1; mode=block
看看這兩個答案，我寫了這個：http://stackoverflow.com/questions/37046133/pdf-blob-is-not-showing-content-angular-2/39657478#39657478和http：///stackoverflow.com/questions/40300252/angular2-displaying-pdf/40300966#40300966 –
是的那些是我在解決方案中使用的完全代碼，但問題仍然存在。當我嘗試在IE中下載文件時，它會打開新標籤頁白色鏈接，如：blob：8ASDA017-7456B-4614-AD56-47456456021 – user3551808
它不適用於IE，僅在Chrome和Mozilla中就我所知。 –