实战技巧：Python爬取OEM 12C上的告警信息并推送至微信企业号

本文主要介绍通过 Python 爬虫脚本，将所有目标的告警信息爬下来，并推送到微信企业号应用实现单点对多目标的巡检。籍此以减少 DBA 的工作量。

如有不了解 Oracle Enterprise Manager Cloud Control 12c 的，可搜索信息自行了解。

一、设置 Incident Manager: All open incidents 为管理器打开的主页面

如下图所示：

二、利用 Python 编写爬虫

利用 python+selenium+geckodriver 爬取一中告警信息推送到企业号。 注意：需要安装 firefox 浏览器（linux 默认自带的 firefox 版本较低的请自行升级到最新版），同时是用 python2.7 写的。 以下是实现代码示范： 

# -*- coding:utf-8 -*- import sys import urllib2 import json import cx_Oracle import os from selenium import webdriver from requests import Session from selenium.webdriver.firefox.options import Options as FirefoxOptions from selenium.webdriver.chrome.options import Options as ChromeOptions from time import sleep default_encoding = 'utf-8' if sys.getdefaultencoding() != default_encoding: reload(sys) sys.setdefaultencoding(default_encoding) os.environ['NLS_LANG'] = 'SIMPLIFIED CHINESE_CHINA.UTF8' class Token(object): def __init__(self, corp_id, corp_secret): self.corp_id = corp_id self.corp_secret = corp_secret self.baseurl = 'https://qyapi.weixin.qq.com/cgi-bin/gettoken?corpid={0}&corpsecret={1}'.format(self.corp_id, self.corp_secret) self.send_values = {} # Get AccessToken def get_token(self): conn = cx_Oracle.connect('FI_SAL/FI_SAL@*.*.*.*:1521/orcl')#本人企业号token定时爬取存在数据库里 cur = conn.cursor() sql = "select * from WX_ACCESS_TOKEN" cur.execute(sql) result = cur.fetchall() for row in result: self.access_token = row[0] cur.close() conn.close() return self.access_token # Send Message def send_data(self, userid, message): self.message = message self.send_url = 'https://qyapi.weixin.qq.com/cgi-bin/message/send?access_token=' + self.access_token self.send_values = { "touser": userid,#接收人 "msgtype": "text", "agentid": "55",#企业号对应的应用ID "text": { "content": message }, "safe": "0" } send_data = json.dumps(self.send_values, ensure_ascii=False) send_request = urllib2.Request(self.send_url, send_data) response = urllib2.urlopen(send_request) # Get Response Message msg = response.read() print userid + ':' + msg return msg corpid = '*****************************' corpsecret = '**********************************' #接收人 DBA加部门领导 toUser = '******|******' req = Session() req.headers.clear() options = FirefoxOptions() options.add_argument("--headless") wd = webdriver.Firefox(firefox_options=options) #wd = webdriver.Firefox() logInUrl = 'https://登录页面的IP:登录页面的端口/em/faces/logon/core-uifwk-console-login' wd.get(logInUrl) wd.find_element_by_xpath('//*[@id="j_username::content"]').send_keys('***填写登录账号**') wd.find_element_by_xpath('//*[@id="j_password::content"]').send_keys('***填写登录密码**') sleep(2) wd.find_element_by_xpath('//*[@id="login"]').click() sleep(2) wd.find_element_by_xpath('//*[@id="emT:lrmd1:iCustVw:4:custViewLink"]').click() sleep(2) i = 1 wxPostList = [] # start with 0 column while i < 100 : j = 1 while j < 100 : xPathColumn1 = '//*[@id="emT:lrmd1:tbmd1:pc2:t2::db"]/table[' + str(i) + ']/tbody/tr[' + str(j) + ']/td[2]/div/table/tbody/tr/td[1]' xPathColumn2 = '//*[@id="emT:lrmd1:tbmd1:pc2:t2::db"]/table[' + str(i) + ']/tbody/tr[' + str(j) + ']/td[2]/div/table/tbody/tr/td[2]' xPathColumn3 = '//*[@id="emT:lrmd1:tbmd1:pc2:t2::db"]/table[' + str(i) + ']/tbody/tr[' + str(j) + ']/td[2]/div/table/tbody/tr/td[3]' xPathColumn6 = '//*[@id="emT:lrmd1:tbmd1:pc2:t2::db"]/table[' + str(i) + ']/tbody/tr[' + str(j) + ']/td[2]/div/table/tbody/tr/td[6]' try : tableElementColumn1 = wd.find_element_by_xpath(xPathColumn1) tableElementColumn2 = wd.find_element_by_xpath(xPathColumn2) tableElementColumn3 = wd.find_element_by_xpath(xPathColumn3) tableElementColumn6 = wd.find_element_by_xpath(xPathColumn6) tableElementColumn1ImgTag = tableElementColumn1.find_element_by_tag_name("img") tableElementColumn1Content = tableElementColumn1ImgTag.get_attribute("title") tableElementColumn2Content = tableElementColumn2.get_attribute('textContent') tableElementColumn3Content = tableElementColumn3.get_attribute('textContent') tableElementColumn6Content = tableElementColumn6.get_attribute('textContent') tempMsg = \ "Target: " + tableElementColumn3Content + "\n" \ + "Severity: " + tableElementColumn1Content + "\n" \ + "Last Updated: \n" + tableElementColumn6Content[0:24] + "\n" \ + "Summary: " + tableElementColumn2Content + "\n\n" wxPostList.append(tempMsg) j = j + 1 except : break #sleep(1) i = i + 1 wd.quit() i = 0 j = 0 wxMsg = '信息技术局技术开发部\n数据库巡检结果：\n\n' if len(wxPostList) > 0 : for i in range(len(wxPostList)) : wxMsg = wxMsg + wxPostList[i] if j == 9 or i == (len(wxPostList) - 1): wxMsg = wxMsg.encode('utf-8') get_test = Token(corpid, corpsecret) get_test.get_token() msg = get_test.send_data(toUser, wxMsg) wxMsg = '' j = 0 j = j + 1 else: wxMsg = wxMsg + '所有鸿翔数据库无任何告警信息！' get_test = Token(corpid, corpsecret) get_test.get_token() msg = get_test.send_data(toUser, wxMsg) 

三、以下是推送结果

通过这样的监控设置，将信息及时送达，即起到通知的及时性，又实现了自动化流程，一定的减少了DBA的工作量。

原文发布时间为：2018-07-05
本文作者：徐美兰
本文来自云栖社区合作伙伴“数据和云”，了解相关信息可以关注“数据和云”。