當輸入的教師資訊不完整時，某些必填項沒有填，那麼將會出現提示“不能為空”，下面我們用自動化實現獲取這個文字資訊。

用.text來獲取：text2=driver.find_element_by_id('ContentPlaceHolder1_RequiredFieldValidator2').text

注：下面用到的login模組在上一節中已說明，此處不再贅述。

#coding =utf-8
from selenium import webdriver
import time
import csv,login,unittest
from selenium.webdriver.common.alert import Alert  #匯入Alert模組，這個必須全寫上
class Warning(unittest.TestCase):
    def setUp(self):
        self.driver=webdriver.Firefox()
        self.base_url="http://localhost:5151/exam5/Login.aspx"
    def test_warning(self):
        driver=self.driver
        driver.get(self.base_url)
        login.login(self)
        driver.find_element_by_id('TreeView1t1').click()
        #讀取檔案
        source=open('teacherinfo.csv','r')
        data=csv.reader(source)
        #
        for key in data:
            #清空輸入框，每次把輸入框清空一下，更加嚴謹
            driver.find_element_by_id('ContentPlaceHolder1_txtTeaNum').clear()  #key[]幾代表第幾列
            driver.find_element_by_id('ContentPlaceHolder1_txtTeaName').clear()
            driver.find_element_by_id('ContentPlaceHolder1_txtTeaPWD').clear()
            print(key,end=',')
            #輸入資訊
            driver.find_element_by_id('ContentPlaceHolder1_txtTeaNum').send_keys(key[0])  #key[]幾代表第幾列
            driver.find_element_by_id('ContentPlaceHolder1_txtTeaName').send_keys(key[1])
            driver.find_element_by_id('ContentPlaceHolder1_txtTeaPWD').send_keys(key[2])
            driver.find_element_by_id('ContentPlaceHolder1_btnAdd').click()
             #取出提示框中的資訊
            try:
                a=Alert(driver)  #例項化Alert物件
                print('  Alert:%s'%a.text) #列印警告資訊5
                a.accept() #接受警告（相當於點選“確定”按鈕）
                driver.get("http://localhost:5151/exam5/admin/teaInfoAdd.aspx")
            #取出文字框後的提示資訊：“不能為空”
            except:
                text1=driver.find_element_by_id('ContentPlaceHolder1_RequiredFieldValidator1').text#用.text方法
                print('  text1:%s'%text1,end=',')
                text2=driver.find_element_by_id('ContentPlaceHolder1_RequiredFieldValidator2').text
                print('  text2:%s'%text2,end=',')
                text3=driver.find_element_by_id('ContentPlaceHolder1_RequiredFieldValidator3').text
                print('  text3:%s'%text3)
                
                
        source.close()
    def tearDown(self):  #關閉火狐
        self.driver.quit()
          
if __name__=="__main__":
    unittest.main()