Home >Backend Development >Python Tutorial >Simple local file upload server example written in python3
This article mainly introduces a simple local file upload server example written in python3. It has a certain reference value. Now I share it with everyone. Friends in need can refer to it
Python is a very fun thing ? Okay, I just said it casually. Anyway, for various reasons (actually I don’t know what it is), I briefly learned python, and then wrote a small toy for uploading files to the server to practice.
The approximate function is as follows:
1. Get the local file list (including folders)
2. Check the server whether it exists on the server. If it does not exist, upload it directly. If it exists, the folder will be ignored. The files will be compared in size. If the sizes are inconsistent, they will be overwritten. Finally, check whether there are files on the server that are not available locally. If they exist, delete them.
3. Later, it was added Ignore the list, ignore the file type
4, and then added restart tomcat, but this function has not been tested
This is probably what it looks like, oh, lost code, lost code
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import os
import os.path
import paramiko
import datetime
import re
# 配置属性
config = {
#本地项目路径
'local_path' : '',
# 服务器项目路径
'ssh_path' : '',
# 项目名
'project_name' : '',
# 忽视列表
'ignore_list' : [],
# ssh地址、端口、用户名、密码
'hostname' : '',
'port' : 22,
'username' : '',
'password' : '',
# 是否强制更新
'mandatory_update' : False,
# 更新完成后是否重启tomcat
'restart_tomcat' : False,
# tomcat bin地址
'tomcat_path' : '',
# 被忽略的文件类型
'ignore_file_type_list' : []
}
# 检查文件夹是否存在，不存在则创建
def check_folder(path):
stdin, stdout, stderr = ssh.exec_command('find ' + path)
result = stdout.read().decode('utf-8')
if len(result) == 0 :
print('目录 %s 不存在，创建目录' % path)
ssh.exec_command('mkdir ' + path)
print('%s 创建成功' % path)
return 1
else:
print('目录 %s 已存在' % path)
return 0
# 检查文件是否存在，不存在直接上传，存在检查大小是否一样，不一样则上传
def check_file(local_path, ssh_path):
# 检查文件是否存在，不存在直接上传
stdin, stdout, stderr = ssh.exec_command('find ' + ssh_path)
result = stdout.read().decode('utf-8')
if len(result) == 0 :
sftp.put(local_path,ssh_path)
print('%s 上传成功' % (ssh_path))
return 1
else:
# 存在则比较文件大小
# 本地文件大小
lf_size = os.path.getsize(local_path)
# 目标文件大小
stdin, stdout, stderr = ssh.exec_command('du -b ' + ssh_path)
result = stdout.read().decode('utf-8')
tf_size = int(result.split('\t')[0])
print('本地文件大小为：%s，远程文件大小为：%s' % (lf_size, tf_size))
if lf_size == tf_size:
print('%s 大小与本地文件相同，不更新' % (ssh_path))
return 0
else:
sftp.put(local_path,ssh_path)
print('%s 更新成功' % (ssh_path))
return 1
# 上传流程开始
print('上传开始')
begin = datetime.datetime.now()
# 文件夹列表
folder_list = []
# 文件列表
file_list = []
# ssh上文件列表
ssh_file_list = []
for parent,dirnames,filenames in os.walk(config['local_path']+config['project_name']):
#初始化文件夹列表
for dirname in dirnames:
p = os.path.join(parent,dirname)
folder_list.append(p[p.find(config['project_name']):])
#初始化文件列表
for filename in filenames:
if config['ignore_list'].count(filename) == 0:
p = os.path.join(parent,filename)
file_list.append(p[p.find(config['project_name']):])
print('共有文件夹%s个，文件%s个' % (len(folder_list),len(file_list)))
# ssh控制台
ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh.connect(hostname=config['hostname'], port=config['port'], username=config['username'], password=config['password'])
# ssh传输
transport = paramiko.Transport((config['hostname'],config['port']))
transport.connect(username=config['username'],password=config['password'])
sftp = paramiko.SFTPClient.from_transport(transport)
# 检查根目录是否存在
root_path = config['ssh_path'] + config['project_name']
stdin, stdout, stderr = ssh.exec_command('find ' + root_path)
result = stdout.read().decode('utf-8')
if len(result) == 0 :
print('目录 %s 不存在，创建目录' % root_path)
ssh.exec_command('mkdir ' + root_path)
print('%s 创建成功' % root_path)
else:
print('目录 %s 已存在，获取所有文件' % root_path)
ssh_file_list = re.split('\n',result)
# 检查文件夹
create_folder_num = 0
for item in folder_list:
target_folder_path = config['ssh_path'] + item
create_folder_num = create_folder_num + check_folder(target_folder_path)
# 检查文件
update_file_num = 0
for item in file_list:
if config['ignore_file_type_list'].count(os.path.splitext(item)[1]) == 0:
local_file_path = config['local_path'] + item
target_file_path = config['ssh_path'] + item
if config['mandatory_update']:
sftp.put(local_file_path,target_file_path)
print('%s 强制更新成功' % (target_file_path))
update_file_num = update_file_num + 1
else:
update_file_num = update_file_num + check_file(local_file_path, target_file_path)
else:
print('%s 在被忽略文件类型中，所以被忽略' % item)
# 检查ssh是否有需要删除的文件
delete_file_num = 0
for item in ssh_file_list:
temp = item[item.find(config['project_name']):]
if folder_list.count(temp) == 0 and file_list.count(temp) == 0 and temp != config['project_name'] and temp != '':
print('%s 在本地不存在，删除' % item)
ssh.exec_command('rm -rf ' + item)
delete_file_num = delete_file_num + 1
end = datetime.datetime.now()
print('本次上传结束：创建文件夹%s个，更新文件%s个，删除文件%s个，耗时：%s' % (create_folder_num, update_file_num, delete_file_num, end-begin))
if config['restart_tomcat']:
print('关闭tomcat')
ssh.exec_command('sh ' + config['tomcat_path'] + 'shutdown.sh')
print('启动tomcat')
ssh.exec_command('sh ' + config['tomcat_path'] + 'startup.sh')
# 关闭连接
sftp.close()
ssh.close()
Finally, a mandatory update is added, that is, no matter what, as long as it is not in the ignore list, it will be directly uploaded and overwritten. There may be problems when updating files by comparing sizes. For example, if I change 1 to 2, it cannot be compared by file size. If I have time later, I will consider pulling down the git update record or other solutions.
Related recommendations:
Easy to build your own server with Python3
##
The above is the detailed content of Simple local file upload server example written in python3. For more information, please follow other related articles on the PHP Chinese website!