Python实现获取及时邮件的方法

本文实例讲述了Python编程实现及时获取新邮件的方法。分享给大家供大家参考，具体如下：

#-*- encoding: utf-8 -*-
import sys
import locale
import poplib
from email import parser
import email
import string
import mysql.connector
import traceback
import datetime
from mysql.connector import errorcode
import time
import re
reload(sys);
sys.setdefaultencoding('utf8');
# 确定运行环境的encoding
__g_codeset = sys.getdefaultencoding()
if "ascii"==__g_codeset:
 __g_codeset = 'utf8';
#
def object2double(obj):
 if(obj==None or obj==""):
 return 0
 else:
 return float(obj)
 #end if
#
def getMailIndex():
 file = open('mailindex.txt',"r");
 lines = file.readlines();
 file.close();
 return int(lines[0]);
#
def setMailIndex(index):
 f = open('mailindex.txt', 'w');
 f.write(index);
 f.close();
#
def utf8_to_mbs(s):
 return s.decode("utf-8").encode(__g_codeset)
#
def utf8_to_gbk(s):
 return s.decode("utf-8").encode('gb2312')
#
def mbs_to_utf8(s):
 return s.decode(__g_codeset).encode("utf-8")
#
def gbk_to_utf8(s):
 return s.decode('gb2312').encode("utf-8")
#
def _queryQuick(cu,sql,tuple):
 try:
 cu.execute(sql,tuple);
 rows = []
 for row in cu:
 rows.append(row)
 #
 return rows
 except:
 print(traceback.format_exc())
 #end
#
#获取信息
def _queryRows(cu,sql):
 try:
 cu.execute(sql)
 rows = []
 for row in cu:
 rows.append(row)
 #
 return rows
 except:
 print(traceback.format_exc())
 #end
#
#是否有新邮件
global hasNewMail;
hasNewMail=True;
#全局已读的邮件数量
global globalMailReaded;
globalMailReaded=getMailIndex()+1;
#获取新邮件
def getNewMail(conn2,cur2):
 try:
 global hasNewMail;
 global globalMailReaded;
 conn2.commit();
 rows=_queryRows(cur2,"select count(*) as message_count from hm_messages where messageaccountid=1");
 message_count=rows[0][0];
 if(hasNewMail):
 print('read mailindex.txt')
 globalMailReaded=getMailIndex()+1;
 #end if
 if(message_count<=globalMailReaded):
 hasNewMail=False;
 #print('Did not receive new mail,continue wait...')
 return None;#没新邮件，直接返回
 #end if
 #登陆邮箱
 host = '127.0.0.1'
 username = 'username@myserver.net'
 password = 'password'
 pop_conn = poplib.POP3(host)
 #print pop_conn.getwelcome()
 pop_conn.user(username);
 pop_conn.pass_(password);
 #Get messages from server:
 messages = [pop_conn.retr(i) for i in range(1, len(pop_conn.list()[1]) + 1)]
 # Concat message pieces:
 messages = ["
".join(mssg[1]) for mssg in messages]
 #Parse message intom an email object:
 messages = [parser.Parser().parsestr(mssg) for mssg in messages]
 print("get new mail!");
 print pop_conn.stat()
 print('%s readed mail count is %d,all mail count is: %d'%(datetime.datetime.now().strftime("%y-%m-%d %H:%M:%S"),globalMailReaded,len(messages)))
 message = messages[globalMailReaded];
 subject = message.get('subject')
 h = email.Header.Header(subject)
 dh = email.Header.decode_header(h)
 #subject = unicode(dh[0][0], dh[0][1]).encode('utf8')
 #print >> f, "Date: ", message["Date"]
 #print >> f, "From: ", email.utils.parseaddr(message.get('from'))[1]
 #print >> f, "To: ", email.utils.parseaddr(message.get('to'))[1]
 #print >> f, "Subject: ", subject
 j = 0
 for part in message.walk():
 j = j + 1
 fileName = part.get_filename()
 contentType = part.get_content_type()
 mycode=part.get_content_charset();
 # 保存附件
 if fileName:
 pass;
 elif contentType == 'text/plain':# or contentType == 'text/html':
 #保存正文
 data = part.get_payload(decode=True)
 content=str(data);
 if mycode=='gb2312':
 content= gbk_to_utf8(content)
 #end if
 content=content.replace(u'u200d','');
 setMailIndex(str(globalMailReaded));
 hasNewMail=True;
 pop_conn.quit();
 return (content,email.utils.parseaddr(message.get('from'))[1]);
 #end if
 #end for
 except:
 print("search hmailserver fail,try again");
 return None;
 finally:
 pass;
 #end try
#end def
#连接数据库
conn2 = mysql.connector.connect(user='root', password='password',host='127.0.0.1',database='hmailserver',charset='gb2312');
cur2 = conn2.cursor();
#只要收到电子邮件，就把这个事件记录在事件库中
#现在就是循环查询邮箱，如果有新邮件就读取，并查询关键词库
while(True):
 mailtuple=getNewMail(conn2,cur2);
 if(mailtuple==None):
 #print('Did not search MySQL,continue loop...')
 time.sleep(0.5)
 continue;
 #end if
 (article,origin)=mailtuple;
#end while