質問編集履歴
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@@ -1,8 +1,57 @@
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R でスクレイピングをするために URL 操作をしたいのです。
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以下がコードです。
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```R
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library(RSelenium)
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library(rvest)
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library(XML)
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remDr = remoteDriver(remoteServerAddr = "localhost", port = 4444, browserName = "chrome")
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remDr$open()
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iterater <- 1
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max_page <- 3
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patent_linkDF <-data.frame('', '')
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sleep <- 3
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url <- 'https://jglobal.jst.go.jp/search/patents#{"category":"3","keyword":"農薬"}'
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remDr$navigate(url)
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planeHtmlList <- remDr$getPageSource()
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fileNmae <- paste(formatC(iterater, width = 5, flag = 0), ".html", sep = "")
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write(unlist(planeHtmlList), fileNmae)
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path <- paste(getwd(), fileNmae, sep = "/")
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html <- read_html(path)
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parsed_doc <- htmlParse(html)
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title <- xpathSApply(doc = parsed_doc , path = "//a[@href]", xmlValue)
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link <- xpathSApply(doc = parsed_doc , path = "//a[@href]", xmlGetAttr, "href")
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tempDF <- data.frame(title, link)
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patent_linkDF <- tempDF[-c(1,2, nrow(tempDF)), ]
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iterater <- iterater + 1
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Sys.sleep(sleep)
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while(iterater <= max_page){
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url <- paste('https://
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url <- paste('https://jglobal.jst.go.jp/search/patents#{"category":"3","keyword":"農薬","page":', iterater, "}", sep='') remDr$navigate(url)
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planeHtmlList <- remDr$getPageSource()
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fileNmae <- paste(formatC(iterater, width = 5, flag = 0), ".html", sep = "")
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write(unlist(planeHtmlList), fileNmae)
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path <- paste(getwd(), fileNmae, sep = "/")
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html <- read_html(path)
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parsed_doc <- htmlParse(html)
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title <- xpathSApply(doc = parsed_doc , path = "//a[@href]", xmlValue)
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link <- xpathSApply(doc = parsed_doc , path = "//a[@href]", xmlGetAttr, "href")
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tempDF <- data.frame(title, link)
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patent_page_linkDF <- tempDF[-c(1,2, nrow(tempDF)), ]
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patent_linkDF <- rbind(patent_linkDF, tempDF);
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iterater <- iterater + 1
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Sys.sleep(sleep)
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}
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write.csv(patent_linkDF, "patent_link.csv")
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```
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7
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以下がエラー内容です。
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```
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