HTTR從服務器讀取時出錯

Question

我正在做一些我認爲應該非常簡單的事情，特別是httr，但無法讓它工作。我想訪問（http://karpo.gov.bc.ca/royp-bin/phcgi.exe?PH_QKC=WRMSQFELD&PH_APP=RMSprodApp&PH_HTML=WRMSQ_FACI_PLANT.HTM）並提交工廠代碼並獲得結果。在閱讀文檔後，我認爲它應該是

res = GET(url = 'http://karpo.gov.bc.ca/royp-bin/phcgi.exe?PH_QKC=WRMSQFELD&PH_APP=RMSprodApp&PH_HTML=WRMSQ_FACI_PLANT.HTM') 

res = PUT(url = 'http://karpo.gov.bc.ca/royp-bin/phcgi.exe', body = list('WEB_FACI_PLANT_VIEW:PLANT' = 160)) 

但是我收到一個錯誤; 「請求在讀取Web服務器時失敗」

任何幫助？

Answer 1

我用curlconverter包建要求：

library(httr) 
library(rvest) 
library(dplyr) 

res <- POST(url = "http://karpo.gov.bc.ca/royp-bin/phcgi.exe", 
      add_headers(Origin = "http://karpo.gov.bc.ca", 
         `Accept-Encoding` = "gzip, deflate", 
         `Accept-Language` = "en-US,en;q=0.8", 
         `User-Agent` = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.70 Safari/537.36", 
         Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8", 
         Referer = "http://karpo.gov.bc.ca/royp-bin/phcgi.exe?PH_QKC=WRMSQFELD&PH_APP=RMSprodApp&PH_HTML=WRMSQ_FACI_PLANT.HTM"), 
      body=list(PH_HTML = "WRMSQ_FACI_PLANT.HTM", 
         PH_QKC = "WRMSQ_FACI_PLANT", 
         PH_APP = "RMSPRODAPP", 
         PH_SEARCH = "PH_SEARCH_STARTPH_SEARCH_END", 
         PH_RECORDID = "PH_RECORDID_STARTPH_RECORDID_END", 
         `WEB_FACI_PLANT_VIEW:FACILITY` = "", 
         `WEB_FACI_PLANT_VIEW:PLANT` = "160", 
         PH_ACTION = "Search"), 
      encode="form") 

pg <- content(res, as="parsed") 
glimpse(html_table(pg)[[2]]) 
## Observations: 11 
## Variables: 6 
## $ FacilityCode <int> 160, 161, 1647, 2355, 4557, 4582, 5857, 7200, 8294, 9049... 
## $ FacilityName <chr> "aitken gas aitkencreek d-044-l/094-a-13 002", "aitken g... 
## $ LinkEffective <chr> "1993 06", "1993 06", "2001 04", "2001 03", "2001 03", "... 
## $ LinkTerminated <lgl> NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA 
## $ PlantCode  <int> 160, 160, 160, 160, 160, 160, 160, 160, 160, 160, 160 
## $ PlantName  <chr> "aitken gas aitkencreek d-044-l/094-a-13 002", "aitken g...