从R中的网址列表下载多个pdf文件时出错

如何解决从R中的网址列表下载多个pdf文件时出错

我有一个网址列表，并尝试通过lapply下载它们链接到的pdf。即使弹出下载栏，我也收到以下消息，但文件未下载：

仅使用“ destfile”参数的第一个元素，尝试输入网址“ https://reliefweb.int/sites/reliefweb.int/files/resources/hno_car_2021_final_fr.pdf” 内容类型“应用程序/ pdf”长度22087482字节（21.1 MB）下载21.1 MB

names<- lapply(pdf,basename) # get names
destination<- paste0 ("~/",names)
lapply(pdf,download.file,destfile=destination)

pdf
[[1]]
[1] "https://reliefweb.int/sites/reliefweb.int/files/resources/hno_car_2021_final_fr.pdf"

[[2]]
[1] "https://reliefweb.int/sites/reliefweb.int/files/resources/rnro_centralsahel_oct_2020_fr_web.pdf"

[[3]]
[1] "https://reliefweb.int/sites/reliefweb.int/files/resources/rnro_centralsahel_oct_2020_en_web.pdf"

[[4]]
[1] "https://reliefweb.int/sites/reliefweb.int/files/resources/hno_2020-final.pdf"

[[5]]
[1] "https://reliefweb.int/sites/reliefweb.int/files/resources/hno_light_2020-en_final_0.pdf"

[[6]]
[1] "https://reliefweb.int/sites/reliefweb.int/files/resources/20200701_HNO_CENTROAMERICA%20ADDENDUM%20ING.pdf"

[[7]]
[1] "https://reliefweb.int/sites/reliefweb.int/files/resources/20200706%20ONEPAGER%20HNO%20Centroame%CC%81rica%20ING.pdf"

[[8]]
[1] "https://reliefweb.int/sites/reliefweb.int/files/resources/cmr_hno_2020-revised_print.pdf"

[[9]]
[1] "https://reliefweb.int/sites/reliefweb.int/files/resources/20200616_HNO_CENTROAMERICA%20ADDENDUM.pdf"

解决方法

我会立即处理所有事情。请参阅前两个文件的代码示例。

base_string = "hello,i am a string,i am surrounded by quotes"
array_from_string = base_string.split.each do |e|
  e.replace('foo') if e.match(/(.+)?s/).nil?
end

puts array_from_string.join(' ')