如何使用 R 从该网站（多个网页）中抓取数据？

Question

I am a beginner in scraping data from website. It seems difficult for me to interpret the structure of html using XML or other packages. Can anyone help me to download the data from this website?

http://wszw.hzs.mofcom.gov.cn/fecp/fem/corp/fem_cert_stat_view_list.jsp

It is about the investment from China. The character set is in Chinese.

What I've tried so far:

library("rvest")

url <- "http://wszw.hzs.mofcom.gov.cn/fecp/fem/corp/fem_cert_stat_view_list.jsp" 

firm <- url %>% 
  html() %>% 
  html_nodes(xpath='//*[@id="Grid1MainLayer"]/table[1]') %>% 
  html_table() 

firm <- firm[[1]] head(firm)

Answer 1

You can try with the function in the XML package called readHTMLTable that should download all the tables in the page and already format it into a data.frame.

library(XML)
all_tables = readHTMLTable("http://wszw.hzs.mofcom.gov.cn/fecp/fem/corp/fem_cert_stat_view_list.jsp")

Then since there is only one table in the page you linked it should be enough to get the first element so:

target_table = all_tables[[1]]