阅读电子邮件附件到R

Question

我使用R来阅读Outlook附件。我的参考资料如下：Download attachment from an outlook email using R

这是我的电子邮件的截图：

每天都会发送给我。

当我尝试提取此附件时，我就是这样做的：

install.packages('RDCOMClient')
library(RDCOMClient)
outlook_app <- COMCreate("Outlook.Application")
search <- outlook_app$AdvancedSearch(
  "Inbox",
  "urn:schemas:httpmail:subject = 'DDM Report #107047216 : \"Nick_ACS_Brand_All_FloodLights\" from Nicholas Knauer'"
)


results <- search$Results()
results$Item(1)$ReceivedTime() # Received time of first search result
as.Date("1899-12-30") + floor(results$Item(1)$ReceivedTime()) # Received date

for (i in 1:results$Count()) {
  if (as.Date("1899-12-30") + floor(results$Item(i)$ReceivedTime()) 
      == as.Date("2017-12-17")) {
    email <- results$Item(i)
  }
}

attachment_file <- tempfile()
email$Attachments(1)$SaveAsFile(attachment_file)
data <- read.csv(attachment_file, skip = 10)

运行results$Item(1)$ReceivedTime()后，出现此错误：

<checkErrorInfo> 80020009 
No support for InterfaceSupportsErrorInfo
checkErrorInfo -2147352567
Error: Exception occurred.

我知道如何解决这个问题吗？

谢谢！

Answer 1

尝试在保存为Sys.sleep(5)和Sys.sleep(10)之间放置results（如果这不起作用，请尝试results$Item(1)$ReceivedTime()）。我认为需要时间来处理。

results <- search$Results() # Saves search results into results object

Sys.sleep(5) # Wait a hot sec!

results$Item(1)$ReceivedTime() # Received time of first search result

as.Date("1899-12-30") + floor(results$Item(1)$ReceivedTime()) # Received date

# Iterates through results object to pull out all of the items
for (i in 1:results$Count()) {
  if (as.Date("1899-12-30") + floor(results$Item(i)$ReceivedTime()) 
      == as.Date(Sys.Date())) {
    email <- results$Item(i)
  }
}