我在这个网页上搜索后使用RSelenium点击一个动态元素:http://www.in.gov.br/web/guest/inicio。
每当我搜索一个单词时,我想在结果网页的右侧找到单词/链接'MinistériodaEducação'(它是教育部的葡萄牙语等价物)并单击它。
我使用了谷歌浏览器的inspect元素功能,但我在查找和点击该元素方面没有任何成功。我已经尝试过使用xpath,css选择器,id ...
我使用以下代码:
## search parameters
string_search <- "contrato"
date_search <- format(
as.Date("17/04/2019", "%d/%m/%Y"),
"%d/%m/%Y") #brazilian format
## start Selenium driver
library(RSelenium)
selCommand <- wdman::selenium(
jvmargs = c("-Dwebdriver.firefox.verboseLogging=true"),
retcommand = TRUE)
shell(selCommand, wait = FALSE, minimized = TRUE) # for windows
# system(selCommand) # for Linux
remDr <- remoteDriver(port = 4567L, browserName = "firefox")
remDr$open()
## navigation & search
remDr$navigate("http://www.in.gov.br/web/guest/inicio")
Sys.sleep(5)
# from date
datefromkey<-remDr$findElement(using = 'css', "#calendario_advanced_from")
datefromkey$clickElement()
datefromkey$sendKeysToElement(list(key = "enter"))
datefromkey$clearElement()
datefromkey$sendKeysToElement(list(date_search))
datefromkey$sendKeysToElement(list(key = "enter"))
# to date
datetokey<-remDr$findElement(using = 'css', "#calendario_advanced_to")
datetokey$clickElement()
datetokey$sendKeysToElement(list(key = "enter"))
datetokey$clearElement()
datetokey$sendKeysToElement(list(date_search))
datetokey$sendKeysToElement(list(key = "enter"))
# string to search
wordkey<-remDr$findElement(using = 'css', "#input-advanced_search")
wordkey$sendKeysToElement(list('"', string_search, '"'))
# click search button
press_button <- remDr$findElement(using = 'class', "btn")
press_button$clickElement()
这是我奋斗的地方:
1)第一次尝试:使用更广泛的标签
# using a broader tag
categorykey <- remDr$findElement(using = 'id', '_3_facetNavigation')
categorykey$getElementText()
随着getElementText()
我看到“MinistériodaEducação”在那里,但我不知道如何点击链接。
2)第二次尝试:使用xpath
categorykey <- remDr$findElement('xpath', '//li
[@id="yui_patched_v3_11_0_1_1555545676970_404"]/text()')
它返回一个错误。硒无法定位元素。
在YouTube上观看此视频后,我自己找到了解决方案:How to locate Dynamic Elements in Selenium Webdriver - XPATH Tutorial
代码如下:
categorykey <-remDr$findElement('xpath', '//*[contains(@data-value,"ministério da
educação")]')
categorykey$getElementText()
# just to see if it's right
categorykey$clickElement()