Angular下载SQLite文件

Question

我有这个代码从服务器下载文件，它适用于大多数文件，除了SQLite * .db文件

download(node){
    this.service.downloadFile(node.data.path)
    .toPromise()
    .then(response => this.saveToFileSystem(response, node.data.name));    
}

private saveToFileSystem(response, filename) {
    const blob = new Blob([response._body], { /*type: 'application/octet-stream'*/ });
    saveAs(blob ,filename);
}

* .db文件正在下载到我的计算机上，但在打开时会得到：

我尝试了两种方式，有/无：输入：'application / octet-stream'

Answer 1

当我将服务中的get调用更新为this.http.get（url， {responseType：ResponseContentType.Blob} ）时工作：

downloadFile(path){      
    var url = this.fileBrowseUrl + "download?path=" + path.replace(/\\/g,"%5C");

    return this.http.get(url ,{responseType: ResponseContentType.Blob})
    .do(/*this.showSpinner = true*/)
    .catch((response: Response) => this.errorHandler(response) );
} 

Answer 2

这就是我下载文件的方式，也许这会对您有所帮助： 成分：

this._service.export(column, date)
       .subscribe(
           (data) => { this.openFileForDownload(data);},
           error => { this.errorMessage = <any>error;  },
           () => {  });

openFileForDownload(data: HttpResponse<any>) {
        let filename = data.headers.get('filename');
        saveAs(data.body, filename);}

服务：

export(column: string, date: Date) {
        let params = new HttpParams()
            .append('column', column)
            .append('date', date ? date.toISOString() : '')
        let headers = new HttpHeaders({ 'Content-Type': 'application/JSON' });
        return this._http.get<any>(url, { headers: headers, params: params, responseType: 'blob' as 'json', observe: 'response' as 'body' });
    }