我正在嘗試使用 Rselenium 從 fanatsylabs.com 抓取歷史 DFS NFL 所有權。我能夠導航到頁面，甚至能夠突出顯示我試圖抓取的元素，但是當我將它放入表格時出現錯誤。
Error in (function (classes, fdef, mtable) :
unable to find an inherited method for function ‘readHTMLTable’ for signature ‘"webElement"’
我查找了錯誤，但似乎找不到原因。對于這個網路抓取問題，我基本上是在嘗試遵循這個堆疊溢位示例。有人可以幫助我理解為什么我無法刮掉這張桌子，以及為了做到這一點我可以做些什么不同的事情嗎？
這是我的完整代碼：
library(RSelenium)
library(XML)
library(RCurl)
# start the Selenium server
rdriver <- rsDriver(browser = "chrome",
chromever = "106.0.5249.61",
)
# creating a client object and opening the browser
obj <- rdriver$client
# navigate to the url
appURL <- 'https://www.fantasylabs.com/nfl/contest-ownership/?date=10112022'
obj$navigate(appURL)
obj$findElement(using = 'xpath', '//*[@id="ownershipGrid"]')$highlightElement()
tableElem <- obj$findElement(using = 'xpath', '//*[@id="ownershipGrid"]')
projTable <- readHTMLTable(tableElem, header = TRUE, tableElem$getElementAttribute("outerHTML")[[1]])
dvpCTable <- projTable[[1]]
dvpCTable
uj5u.com熱心網友回復：
library(tidyverse)
library(httr2)
"https://www.fantasylabs.com/api/contest-ownership/1/10_12_2022/4/75377/0/" %>%
request() %>%
req_perform() %>%
resp_body_json(simplifyVector = TRUE) %>%
as_tibble
#> # A tibble: 43 x 4
#> Prope~1 $Fant~2 $Posi~3 $Play~4 $Team $Salary $Actu~5 Playe~6 SortV~7 Fanta~8
#> <int> <int> <chr> <chr> <chr> <int> <dbl> <int> <lgl> <int>
#> 1 50882 1376298 TE Albert~ "DEN" 2800 NA 50882 NA 1376298
#> 2 51124 1376299 TE Andrew~ "DEN" 2500 1.7 51124 NA 1376299
#> 3 33781 1385590 RB Austin~ "LAC" 7500 24.3 33781 NA 1385590
#> 4 55217 1376255 QB Brett ~ "DEN" 5000 NA 55217 NA 1376255
#> 5 2409 1376309 QB Chase ~ "LAC" 4800 NA 2409 NA 1376309
#> 6 40663 1385288 WR Courtl~ "DEN" 6100 3.4 40663 NA 1385288
#> 7 50854 1376263 RB Damare~ "DEN" 4000 NA 50854 NA 1376263
#> 8 8580 1376342 WR DeAndr~ "LAC" 3600 4.7 8580 NA 1376342
#> 9 8472 1376304 D Denver~ "DEN" 2500 7 8472 NA 1376304
#> 10 62112 1376262 RB Devine~ "" 4000 NA 62112 NA 1376262
#> # ... with 33 more rows, 34 more variables:
#> # Properties$`$5 NFL $70K Flea Flicker [$20K to 1st] (Mon-Thu)` <dbl>,
#> # $Average <dbl>, $Volatility <lgl>, $GppGrade <chr>, $MyExposure <lgl>,
#> # $MyLeverage <lgl>, $MyLeverage_rnk <lgl>, $MediumOwnership_pct <lgl>,
#> # $PlayerId_rnk <int>, $PlayerId_pct <dbl>, $FantasyResultId_rnk <int>,
#> # $FantasyResultId_pct <dbl>, $Position_rnk <lgl>, $Position_pct <lgl>,
#> # $Player_Name_rnk <lgl>, $Player_Name_pct <lgl>, $Team_rnk <lgl>, ...
使用reprex v2.0.2創建于 2022-11-03
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標籤：r网页抓取硒