Python 实现http server接收mutipart/form-data文件 方法2

1 Server端代码

以下代码亲测有效，仅适应于接收客户端上传的图片，其他文件未曾测试，作者主要应用于平时的自测工具。
说明1： 如有特殊需求，请自行更改，有意见，评论区留言。
说明2： 建议使用这个方法用于生产、成熟软件开发。Python 实现http server接收mutipart/form-data文件 方法1

from dataclasses import replace
from http.server import HTTPServer, BaseHTTPRequestHandler
import json,os,re,chardet,posixpath,codecs
from urllib.parse import unquote

class Resquest(BaseHTTPRequestHandler):
    def do_POST(self):
        print("headers:", self.headers)
        print("command:",self.command)
        print("path:",self.path)
        
        bdy = self.headers.get_boundary()
        if not  bdy is None:
            print(" = in headers")
            boundary = self.headers['content-type'].split("=")[1]
            print("boundary:",boundary)
            if "Boundary" in boundary :
                print("parser image")
                self.deal_post_data()
            else :
                print("can't handle boundary")
        else :
             print(" = not in headers")
             req_datas = self.rfile.read(int(self.headers['content-length'])) 
             print("--------------------接受client发送的数据----------------")
             res1 = req_datas.decode('utf-8')
             res = json.loads(req_datas)
             print(res)
             #f = open('1.txt', 'w')
             #f.write(req_datas.decode())
             #f.close()
             #print(req_datas)
             print("--------------------接受client发送的数据完毕------------------")
             #data1 = {'bbb':'222'}
             #data = json.dumps(data1)
             #self.send_response(200)
             #self.send_header('Content-type', 'application/json')
             #self.end_headers()
             #self.wfile.write(data)

    def deal_post_data(self):
        boundary = self.headers["Content-Type"].split("=")[1].encode('ascii')
        print("boundary===", boundary)
        remain_bytes = int(self.headers['content-length'])
        print("remain_bytes===", remain_bytes)

        res = []
        line = self.rfile.readline()
        print("line=",line)
        bdarys = boundary.decode()
        bdarys = bdarys.replace(" ","")
        boundary = bdarys.encode()
        while boundary in line and str(line, encoding = "utf-8")[-4:] != "--\r\n":
            #line = self.rfile.readline()
            remain_bytes -= len(line)
            if boundary not in line:
                return False, "Content NOT begin with boundary"
            line = self.rfile.readline()
            remain_bytes -= len(line)
            print("line!!!==",str(line))    
            strLine = str(line)      
            fn = strLine.split(';') [2].replace(' filename=','')
            fn= fn[:-5]
            print("fn==",fn)
            if not fn:
                print("False, Can't find out file name...")
                return False, "Can't find out file name..."
            path = translate_path(self.path)
            print("path==",path)

            fname = fn
            #fname = fname.replace("\\", "\\\\")
            fname = self.str_to_chinese(fname)
            print("fname==",fname)
            
            fn = os.path.join(path, fname)
            print("SavefilePath==",fn)
            dirname = os.path.dirname(fn)
            if not os.path.exists(dirname):
                os.makedirs(dirname)
            line = self.rfile.readline()
            remain_bytes -= len(line)
            line = self.rfile.readline()
            # b'\r\n'
            remain_bytes -= len(line)
            try:
                out = open(fn, 'wb')
            except IOError:
                return False, "Can't create file to write, do you have permission to write?"

            pre_line = self.rfile.readline()
            print("pre_line", pre_line)
            remain_bytes -= len(pre_line)
            print("remain_bytes", remain_bytes)
            Flag = True
            while remain_bytes > 0:
                line = self.rfile.readline()
                #print("while line", line)
                
                if boundary in line:
                    remain_bytes -= len(line)
                    pre_line = pre_line[0:-1]
                    if pre_line.endswith(b'\r'):
                        pre_line = pre_line[0:-1]
                    out.write(pre_line)
                    out.close()
                    #return True, "File '%s' upload success!" % fn
                    res.append("File '%s' upload success!" % fn)
                    Flag = False
                    break
                else:
                    out.write(pre_line)
                    pre_line = line
            if pre_line is not None and Flag == True:
                out.write(pre_line)
                out.close()
                res.append("File '%s' upload success!" % fn)
            #return False, "Unexpect Ends of data."
        return True, res

    def str_to_chinese(self,var):
        not_end = True
        while not_end:
            start1 = var.find("\\x")
            # print start1
            if start1 > -1:
                str1 = var[start1 + 2:start1 + 4]
                print(str1)
                start2 = var[start1 + 4:].find("\\x") + start1 + 4
                if start2 > -1:
                    str2 = var[start2 + 2:start2 + 4]

                    start3 = var[start2 + 4:].find("\\x") + start2 + 4
                    if start3 > -1:
                        str3 = var[start3 + 2:start3 + 4]
            else:
                not_end = False
            if start1 > -1 and start2 > -1 and start3 > -1:
                str_all = str1 + str2 + str3
                # print str_all
                str_all = codecs.decode(str_all, "hex").decode('utf-8')

                str_re = var[start1:start3 + 4]
                # print str_all, "   " ,str_re
                var = var.replace(str_re, str_all)
        # print var.decode('utf-8')
        return var

def translate_path(path):
    """Translate a /-separated PATH to the local filename syntax.
    Components that mean special things to the local file system
     (e.g. drive or directory names) are ignored.  (XXX They should
    probably be diagnosed.)
    """
    # abandon query parameters
    path = path.split('?', 1)[0]
    path = path.split('#', 1)[0]
    path = posixpath.normpath(unquote(path))
    words = path.split('/')
    words = filter(None, words)
    path = os.getcwd()
    for word in words:
        drive, word = os.path.splitdrive(word)
        head, word = os.path.split(word)
        if word in (os.curdir, os.pardir):
            continue
        path = os.path.join(path, word)
    return path
        
if __name__ == '__main__':
    host = ('192.168.1.16', 18098)
    server = HTTPServer(host, Resquest)
    print("Starting server, listen at: %s:%s" % host)
    server.serve_forever()

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2 测试

参见链接文章中的客户端测试方法进行测试。
如有其他需求或问题，烦请评论区留言。
Python 实现http server接收mutipart/form-data文件 方法1