FTP服务器之上传

1.SERVER端

__author__ = ‘alex‘
#coding:utf-8
import socket
import os
import sys
import json

ip_port = (‘127.0.0.1‘,8009)
sk = socket.socket()
sk.bind(ip_port)
sk.listen(5)
# print (os.path.dirname(__file__))
print ("服务端启动...")

while True:
    conn,addr = sk.accept()
    file_info_bytes = conn.recv(1024)
    file_info_str = str(file_info_bytes,"gbk")
    file_info = json.loads(file_info_str)
    client_file_name = file_info.get(‘file_name‘)
    client_file_size = file_info.get(‘file_size‘)
    print (file_info)

    if os.path.exists(client_file_name):
        print ("文件存在！")
        server_file_size = os.stat(client_file_name).st_size
        print (server_file_size)
        conn.sendall(bytes(str(server_file_size),"gbk"))
        server_file = open(client_file_name,‘ab‘)
        while server_file_size < client_file_size:
            try:
                data=conn.recv(1024)
                if not data:
                    raise Exception
            except Exception:
                break

            server_file.write(data)
            server_file_size += len(data)
        server_file.close()
    else:
        print ("文件不存在！")
        server_file_size = 0
        print (server_file_size)
        conn.sendall(bytes(str(server_file_size),"gbk"))
        # has_received = 0
        server_file = open(client_file_name,‘wb‘)
        while server_file_size < client_file_size:
            try:
                data=conn.recv(1024)
                if not data:
                    raise Exception
            except Exception:
                break

            server_file.write(data)
            server_file_size += len(data)
        server_file.close()

2.CLIENT端

__author__ = ‘alex‘
#coding:utf-8
import socket
import os
import sys
import json

def process_bar(num,total):
    percent = float(num)/float(total)
    per_int = int(percent*100)
    # print (percent,per_int)
    # print (">"*per_int + "%d%%" %(per_int+1))
    temp = "\r%d%%" %(per_int)
    sys.stdout.write(temp)
    sys.stdout.flush()

FILE_PATH = "D:\\ftp\\Rio.explorer.rmvb"
FILE_NAME = FILE_PATH.split(‘\\‘)[-1]

ip_port = (‘127.0.0.1‘,8009)
sk = socket.socket()
sk.connect(ip_port)
file_info = {}
print ("客户端启动...")

while True:

    if os.path.exists(FILE_PATH):
        file_size = os.stat(FILE_PATH).st_size
        file_info[‘file_name‘] = FILE_NAME
        file_info[‘file_size‘] = file_size
        file_info_json = json.dumps(file_info)
        sk.sendall(bytes(file_info_json,"gbk"))
        server_file_size = sk.recv(1024)
        server_file_size_str = str(server_file_size,"gbk")
        server_file_size_int = int(server_file_size_str)
        print (server_file_size_str)
        if int(server_file_size_str) != 0:
            inp = input("服务器上存在此文件，是否续传？")
            if inp == ‘y‘:
                file_obj = open(FILE_PATH,‘rb‘)
                file_obj.seek(server_file_size_int)
                # print (file_seek)
                print ("开始续传...")
                while server_file_size_int < file_size:
                    file_read = file_obj.read(1024)
                    sk.sendall(file_read)
                    server_file_size_int += len(file_read)
                    process_bar(server_file_size_int,file_size)
                file_obj.close()
            else:
                break
        else:
            print ("服务器端没有这个文件，要从开头开始发送...")
            file_obj = open(FILE_PATH,‘rb‘)
            while server_file_size_int < file_size:
                file_read = file_obj.read(1024)
                sk.sendall(file_read)
                server_file_size_int += len(file_read)
                process_bar(server_file_size_int,file_size)
            file_obj.close()

    else:
        print ("本地文件不存在！")

sk.close()