Python解析XML并导出至Excel的完整实现

class get_xml():
  #加载获取xml的文档对象
  def __init__(self,address):
    #解析address文件，返回DOM对象，address为文件地址
    self.doc = minidom.parse(address)
    #DOM是树形结构，_get_documentElement()获得了树形结构的根节点
    self.root = self.doc._get_documentElement()
    #.getElementsByTagName()，根据name查找根目录下的子节点
    self.httpSample_nodes = self.root.getElementsByTagName('httpSample')
  def getxmldata(self):
    data_list=[]
    j = -1
    responseData_node = self.root.getElementsByTagName("responseData")
    for i in self.httpSample_nodes:
      j = j+1
      #getAttribute()，获取DOM节点的属性的值
      if i.getAttribute("lb") == "发送信息":
        a = 'chatId":"(.*?)"'
      elif i.getAttribute("lb") == "接收信息":
        # a = "chatId%3A%22(.*?)%22"
        a = "info%3A%22(.*?)%22"
      if (i.getAttribute("lb") == "发送信息" or i.getAttribute("lb") == "接收信息") and i.getAttribute("rc") == "200":
        try:
          #使用re包里面的方法，通过正则表达式提取数据
          b = re.search(a, responseData_node[j].firstChild.data)
          if b is not None:
            d = b.group(1)
            print("d:",d)
            data_list.append((d, i.getAttribute("ts"), i.getAttribute("lt"),i.getAttribute("lb")))
        except:
          pass
    return data_list

import openpyxl
from openpyxl import writer,load_workbook
# Workbook用来在内存里创建文件最后写进磁盘的
from openpyxl.workbook import workbook, Workbook
from openpyxl.writer.excel import ExcelWriter
from openpyxl.cell import get_column_letter
# if __name__ == "__main__":
def importexcel(match,dest_filename):
  if(os.path.exists(dest_filename)):
    wb = load_workbook(filename=dest_filename)
  else:
    wb = Workbook()
  ew = ExcelWriter(workbook = wb)
  #创建一个新sheet
  wb.create_sheet(0, '聊聊发送接收请求')
  # 打开已存在的第一个sheet，也可以用get_sheet_names获得所有的sheet的名字
  ws = wb.worksheets[0]
  ws.title = "聊聊发送接收请求"
  ws.cell('A1').value = "chartid"
  ws.cell('B1').value = "接收时间戳"
  ws.cell('C1').value = "发送时间戳"
  ws.cell('D1').value = "时间戳差"
  ws.cell('E1').value = "接收lt"
  ws.cell('F1').value = "发送到接收的响应时间"
  l = 2
  for i in match:
    ws.cell(row=l,column=1).value = i['chatId']
    ws.cell(row=l,column=2).value = i['accept_timestamp']
    ws.cell(row=l,column=3).value = i['send_timestamp']
    ws.cell(row=l,column=4).value = i['timestamp_gap']
    ws.cell(row=l,column=5).value = i['accept_lt']
    ws.cell(row=l,column=6).value = i['response_time']
    print(i,l)
    l = l+1
  ew.save(filename = dest_filename)