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我正在使用 Flask 在网站上工作。在数据库中我的图像类型 blob 和我使用 flask-mysql 库。我想将图像上传到数据库并从那里显示，但是当我尝试显示时，我的输出在“goster.html”中为无

这是我的上传表单：

class UploadForm(Form):
   billcontent = StringField("Bill Content")
   bill = FileField("File")

这里是'/deneme'：

@app.route("/deneme",methods = ["POST","GET"])
@login_required
def deneme():
   form = UploadForm(request.form)
   if request.method == "POST":
       billcontent = form.billcontent.data
       bill = form.bill.data
       company = get_current_user_company()
       cursor = mysql.connection.cursor()
       sorgu = "Insert into deneme(billcontent,bill,company) VALUES(%s,%s,%s)"
       cursor.execute(sorgu,(billcontent,bill,company,))
       mysql.connection.commit()
       cursor.close()
       flash("{} faturası başarıyla eklendi!".format(billcontent))
       return redirect(url_for("index"))
   return render_template("deneme.html",form=form)

在这里'/ goster'：

@app.route("/goster")
@login_required
def goster():
   cursor = mysql.connection.cursor()
   sorgu = "Select * From deneme "
   result = cursor.execute(sorgu)
   if result>0:
       image = cursor.fetchone()
       return render_template("goster.html",image=image)
   else:
       return render_template("goster.html")

deneme.html：

{% extends "layout.html" %}


{% block middleside %}
{% from "includes/formhelpers.html" import render_field %}
<form method = "POST" enctype="multipart/form-data">

{{ render_field(form.billcontent,class = "form-control") }}
{{ render_field(form.bill,class = "form-control") }}
<button type="submit">Upload Bill</button>

</form>
{% endblock middleside %}

goster.html:

{% extends "layout.html" %}

{% block middleside %}

{{image.bill}}

{% endblock middleside %}
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