angular4 下载文件 Excel zip包

1.下载Excel 文件

import { ResponseContentType } from '@angular/http';

exportInternalOrder(body) {
    let user_token: string = this.sessionService.getToken();
    let headers = new Headers();
    headers.append('Authorization', 'Bearer ' + user_token);
    return this.http.post(this.config.exportInternalOrder, body,{
        headers: headers,
        responseType: ResponseContentType.Blob
    }).map(res => new Blob([res._body],{ type: 'application/vnd.ms-excel' }));
}

2.下载ZIP

var a = document.createElement('a');
var blob = new Blob([responseData], {'type':"application/octet-stream"});
a.href = URL.createObjectURL(blob);
a.download = "filename.zip";
a.click();

 浏览器有时候会拦截窗口 所以下载excel zip 文件的时候创建a标签下载 保存到本地即可。如上zip下载示例。

 下载示例：

  /**
   * 请求成功之后保存成excel文件（基本导出方法，请求成功之后调用）
   * @param data
   * @param name
   */
 public  saveExcel(data: Response,name:string){
    var a = document.createElement('a');
    var blob = new Blob([data], {'type':"application/vnd.ms-excel"});
    a.href = URL.createObjectURL(blob);
    a.download = name+".xls";
    a.click();
  }  

public  down(startDate:String,endDate:String):Promise<any>{
     const url= `rest/report/export?startDate=`+startDate+'&endDate='+endDate;
      return this.http.get(url,{responseType: ResponseContentType.Blob}).toPromise().then(res=>{
        //return res.json() as any;
         this.saveExcel(res.json(),"表一");
      })
  }