参考上一个问题，这是我所做的一些调整，并进一步添加了一些功能。
在上一个问题中，循环是迭代多个 IP 和单个命令，但现在我希望循环迭代多个 IP 和多个命令，为此我又添加了一个 for 循环。
与在代码中一样，写入文件时一切正常，但在 HttpResponse 中，上次输出的结果覆盖了以前的输出
views.py
from django.shortcuts import render
from first_app.forms import CmdForm
from django.http import HttpResponse, HttpResponseRedirect
import netmiko
from netmiko import ConnectHandler
from netmiko.ssh_exception import NetMikoTimeoutException
from paramiko.ssh_exception import SSHException
from netmiko.ssh_exception import AuthenticationException
import datetime, time, sys
from django.urls import reverse
# Create your views here.
def form_name_view(request):
if request.method == "POST":
form = CmdForm(request.POST)
if form.is_valid():
from netmiko import ConnectHandler
ipInsert = request.POST.get('ip_address', '') #taking multiple IPS
ipIns = ipInsert.split(',') #splitting IPs CSVs
cmd = request.POST.get('command', '') #tking multiple Commands
cmdlist = cmd.split(',') #splitting commands
for ipIn in ipIns: #for eqch in IP in IP list
for cmdSingle in cmdlist: #for eah command in Command list
devices = {
'device_type':'cisco_ios',
'ip':ipIn,
'username':'mee',
'password':'12345',
'secret':'12345',
}
try:
netconnect = ConnectHandler(**devices)
except (AuthenticationException):
re = 'Authentication failed.! please try again {}'.format(ipIn)
print(re)
return render(request,'first_app/forms.html', {'form': form, 'reprinting':re})
pass
except (SSHException):
re = 'SSH issue. Are you sure SSH is enabled? {}'.format(ipIn)
print(re)
return render(request,'first_app/forms.html', {'form': form, 'reprinting':re})
pass
except (NetMikoTimeoutException):
re = 'TimeOut to device {}'.format(ipIn)
print(re)
return render(request,'first_app/forms.html', {'form': form, 'reprinting':re})
pass
except (EOFError):
re = 'End of file while attempting device {}'.format(ipIn)
print(re)
return render(request,'first_app/forms.html', {'form': form, 'reprinting':re})
pass
except Exception as unknown_error:
re = 'Some other error {}' .format(unknown_error)
print(re)
return render(request,'first_app/forms.html', {'form': form, 'reprinting':re})
pass
output = netconnect.send_command(cmdSingle) #sending command to router
now = time.strftime("%Y_%m_%d__%H_%M_%S") #print command on web
file = sys.stdout #standard output in txt file
file = open("C:/Users/OneDrive/Desktop/frontend/ "+now+"__"+ipIn +".txt", mode='a+') #open and append file
file.write("IP address isn"+ ipIn) # write IP address to file
file.write("nnCommand Executed: n"+ cmdSingle) #write command to file
file.write("nn~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~")
file.write("nnOutput of Executed Command: nnn"+output) #writing output to file
file.close
return render(request,'first_app/forms.html', {'form': form, 'output':output, 'getIP':ipIn,
'date_time':now, 'ipList':ipIns,
'cmdlist':cmdlist,'cmdSingle':cmdSingle}) #http response on web
else:
form = CmdForm()
return render(request,'first_app/forms.html', {'form': form})
else:
return render(request,'first_app/forms.html', {})
形式.html
<!DOCTYPE html>
{% load staticfiles %}
<html lang="en" dir="ltr">
<head>
<meta charset="utf-8">
<title>FORMS</title>
<style>
table, th, td {
style=width:100%;
max-height:100px;
border: 1px solid black;
}
#lengthy{
max-height:50px;
overflow-y: scroll;
height:50px;
}
</style>
</head>
<body>
<h1> Run Commands </h1>
<form method="POST"> {% csrf_token %}
{% for field in form %}
<div class="fieldWrapper">
{{ field.errors }} <br>
{{ field.label_tag }} <br/>
{{ field }}
</div>
{% endfor %}
<br><br>
<input type="submit" value="Click Here to run Commands" />
<br>
{% if request.POST %}
<pre>{{ reprinting }}</pre>
{% endif %}
<br>
{% if request.POST %}
{% csrf_token %}
<table>
<tr>
<th>Current date and time</th>
<th>IP address </th>
<th>Command Executed </th>
<th>Output</th>
</tr>
{% for getIP in ipList %}
{% for cmdSingle in cmdlist %}
<tr>
<td style="width:20%"> {{ date_time }} </td>
<td style="width:15%"><pre> {{ getIP }} </pre></td>
<td style="width:20%"><pre> {{ cmdSingle }} </pre></td>
<td id="lengthy" style="width:90%"><pre>{{ output }}</pre></td>
</tr>
{% endfor %}
{% endfor %}
</table>
{% endif %}
</form>
</body>
</html>
谢谢你的帮助。！
我认为您应该构建列表列表并在模板中显示输出。喜欢这个：
def form_name_view(request):
if request.method == "POST":
form = CmdForm(request.POST)
if form.is_valid():
# rest of the code
output_list = list()
for ipIn in ipIns:
for cmdSingle in cmdlist:
# try catch block
output = netconnect.send_command(cmdSingle)
output_list.append([ipIn, cmdSingle, output]) # appending ip, cmd and output as a list to output list
# rest of the code
return render(request,'first_app/forms.html', {'form': form, 'output_list':output_list, 'date_time':now})
然后在模板中渲染它：
{% for getIP, cmdSingle, output in output_list %}
<tr>
<td style="width:20%"> {{ date_time }} </td>
<td style="width:15%"><pre> {{ getIP }} </pre></td>
<td style="width:20%"><pre> {{ cmdSingle }} </pre></td>
<td id="lengthy" style="width:90%"><pre>{{ output }}</pre></td>
</tr>
{% endfor %}