[英]How to send pdf data and save from SQL Server using python(server) and Angular (client)
I have my REST application. 我有我的REST应用程序。
Client side -> Angular 5. 客户端-> Angular 5。
Server side -> python (using cherrypy). 服务器端-> python(使用cherrypy)。
Database -> SQL Server. 数据库-> SQL Server。
Database screen: enter image description here 数据库屏幕: 在此处输入图像描述
I want to click button and download a file to my computer. 我想单击按钮并将文件下载到我的计算机。 What is the best way to download this file from database?
从数据库下载此文件的最佳方法是什么?
Python: 蟒蛇:
with CDN_XL:
CDN_XL.executeWithParams("""SELECT DAB_Dane FROM CDN.DaneBinarne, CDN.DaneObiekty WHERE DAB_ID = DAO_DABId AND DAB_ID = %s""", (download_id))
CDN_XL.conn.commit()
types = CDN_XL.cur.fetchall()
information_json = []
if types is not None and len(types) > 0:
for typ in types:
information_json.append({"data": str(typ["DAB_Dane"])})
output_json = {"files":information_json}
return json.dumps(output_json, ensure_ascii=False)
I return this to client, but i know this is not correct. 我将此退还给客户,但我知道这是不正确的。 It was my first idea.
这是我的第一个主意。
Angular: 角度:
public downloadAttachments(id, idAttachment) {
const requestUrl = this.firmListBaseUrl + id + '/ZALACZNIKI/' + idAttachment + '/' + idAttachment;
return this.http.get(requestUrl, { headers: this.sharedServicesService.prepareAuthHeaders() })
.map(res => {
return res.json().files;
});
} }
Now I am trying to convert somehow this data to Blob and save as pdf. 现在,我正尝试将这些数据转换为Blob并另存为pdf。 I guesse is not correct so I decided to write here for help.
我猜是不正确的,所以我决定在这里写信寻求帮助。 Thanks!
谢谢!
Looks like you have the data in your db already as binary. 看起来您的数据库中的数据已经是二进制数据了。
with CDN_XL:
CDN_XL.executeWithParams("""SELECT DAB_Dane FROM CDN.DaneBinarne, CDN.DaneObiekty WHERE DAB_ID = DAO_DABId AND DAB_ID = %s""", (download_id))
CDN_XL.conn.commit()
pdf_bin = CDN_XL.cur.fetchone()
cherrypy.response.headers['Content-Type'] = 'application/pdf'
cherrypy.response.headers['Content-Disposition'] = 'inline;filename="report.pdf"'
return pdf_bin["DAB_Dane"]
Ps. 附言 I'm a django guy.
我是Django的家伙。 My cherrypi-foo is not very strong
我的cherrypi-foo不是很结实
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