import os
import math
import hashlib

def get_file_md5(self, file_path):
    """获取文件的md5值"""
    with open(file_path, 'rb') as f:
         data = f.read()
         return hashlib.md5(data).hexdigest()

def get_filename(self, filepath):
    """获取文件原始名称"""
    # 文件名带后缀
    filename_with_suffix = os.path.basename(filepath)
    # 文件名
    filename = filename_with_suffix.split('.')[0]
    # 后缀名
    suffix = filename_with_suffix.split('.')[-1]
    return filename_with_suffix, filename, suffix

def get_chunk_info(self, file_path):
    """获取分段信息"""
    # 获取文件总大小(字节)
    file_total_size = os.path.getsize(file_path)
    print(file_total_size)

    # 分段总数
    total_chunks_num = math.ceil(file_total_size / self.chunk_size)
    # 文件名（带后缀）
    filename = self.get_filename(file_path)[0]
    # 文件的md5值
    file_md5 = self.get_file_md5(file_path)
    return file_total_size, total_chunks_num, filename, file_md5

import requests

def do_chunk_and_upload(self, file_path):
​    """将文件分段处理，并上传"""
    file_total_size, total_chunks_num, filename, file_md5 = self.get_chunk_info(file_path)

    # 遍历
    for index in range(total_chunks_num):
        print('第{}次文件上传'.format(index + 1))
        if index + 1 == total_chunks_num:
            partSize = file_total_size % chunk_size
        else:
            partSize = chunk_size

        # 文件偏移量
        offset = index * chunk_size

        # 生成分片id,从1开始
        chunk_id = index + 1

        print('开始准备上传文件')
        print("分片id:", chunk_id, "文件偏移量：", offset, ",当前分片大小:", partSize, )

        # 分段上传文件
        self.__upload(offset, chunk_id, file_path, file_md5, filename, partSize, total_chunks_num)

def __upload(self, offset, chunk_id, file_path, file_md5, filename, partSize, total):
    """分次上传文件"""
    url = 'http://**/file/brust/upload'
    params = {'chunk': chunk_id,
                'fileMD5': file_md5,
                'fileName': filename,
                'partSize': partSize,
                'total': total
                }
    # 根据文件路径及偏移量，读取文件二进制数据
    current_file = open(file_path, 'rb')
    current_file.seek(offset)

    files = {'file': current_file.read(partSize)}
    resp = requests.post(url, params=params, files=files).text
    print(resp)

def merge_file(self, filepath):
        """合并"""
        url = 'http://**/file/brust/merge'
        file_total_size, total_chunks_num, filename, file_md5 = self.get_chunk_info(filepath)
​        payload = json.dumps(
            {
                "fileMD5": file_md5,
                "chunkTotal": total_chunks_num,
                "fileName": filename
            }
        )
        print(payload)
        headers = {
            "Content-Type": "application/json"
        }
        resp = requests.post(url, headers=headers, data=payload).text
        print(resp)

# fileupload.py
...
if __name__ == '__main__':
    filepath = sys.argv[1]

    # 每一段切片的大小(MB)
    chunk_size = 2 * 1024 * 1024

    fileApi = FileApi(chunk_size)
    # 分段上传
    fileApi.do_chunk_and_upload(filepath)

    # 合并
    fileApi.merge_file(filepath)

# cmd.bat

@echo off
set filepath=%1

python  C:\Users\xingag\Desktop\rpc_demo\fileupload.py %*