Question

我编写了一个简单的闪亮应用程序，其中包含来自数据库的数据。这是我的代码：

library(RODBCext)
library(RODBC)
library(shiny)

ui <- shinyUI(

  pageWithSidebar(

    headerPanel("Hide Side Bar example"),
    sidebarPanel(
      textInput("SensorName", "Enter Sensorname below"),
      submitButton(text="Submit")
    ),
    mainPanel(
      tabsetPanel(
        tabPanel("Data", tableOutput("tbTable"))
      )

    )
  )
)
server <- function(input, output)    
{ # NOTE THE BRACE HERE

  #connect to database 
  dbhandle = odbcDriverConnect('driver={SQL Server};server=databuilt.database.windows.net;port=;database=;uid=;pwd=')

  #build query

  query = "SELECT DateTime, Value, SensorName FROM dbo.Larissa WHERE (SensorName LIKE 'Inblaast%' OR SensorName LIKE 'Buitentemp. - 48%') ORDER BY DateTime ASC"

  #store results
  res <- sqlExecute(channel = dbhandle, 
                    query = query,
                    fetch = TRUE,
                    stringsAsFactors = FALSE) 

  #close the connection
  #odbcClose(dbhandle)
  #return results
  res
  test<- head(res)
  output$tbTable <- 
    renderTable(
      test
    )
  odbcClose(dbhandle)  
} 

shinyApp(ui = ui, server = server)

当我在本地环境中运行此闪亮的应用程序时，它可以完美运行。当我将其发布到Shinyapps.io并运行它时，出现以下错误：Disconnect from the server，而当我通过rsconnect::showLogs(account='')检查错误时，则得到：

2018-09-27T11:12:07.518296+00:00 shinyapps[472567]: 
2018-09-27T11:12:07.313806+00:00 shinyapps[472567]: R version: 3.5.1
2018-09-27T11:12:07.526435+00:00 shinyapps[472567]: 
2018-09-27T11:12:07.313808+00:00 shinyapps[472567]: shiny version: 1.1.0
2018-09-27T11:12:07.313809+00:00 shinyapps[472567]: httpuv version: 1.4.5
2018-09-27T11:12:07.526437+00:00 shinyapps[472567]: Listening on http://127.0.0.1:37039
2018-09-27T11:12:07.313809+00:00 shinyapps[472567]: rmarkdown version: NA
2018-09-27T11:12:07.313810+00:00 shinyapps[472567]: knitr version: NA
2018-09-27T11:12:07.313824+00:00 shinyapps[472567]: jsonlite version: 1.5
2018-09-27T11:12:07.313825+00:00 shinyapps[472567]: RJSONIO version: NA
2018-09-27T11:12:07.313830+00:00 shinyapps[472567]: htmltools version: 0.3.6
2018-09-27T11:12:09.775718+00:00 shinyapps[472567]: Warning in odbcDriverConnect("driver={SQL Server};server=databuilt.database.windows.net;port=;database=;uid=;pwd=") :
2018-09-27T11:12:09.775722+00:00 shinyapps[472567]:   [RODBC] ERROR: state 01000, code 0, message [unixODBC][Driver Manager]Can't open lib 'SQL Server' : file not found
2018-09-27T11:12:09.776217+00:00 shinyapps[472567]: Warning in odbcDriverConnect("driver={SQL Server};server=databuilt.database.windows.net;port=;database=;uid=;pwd=") :
2018-09-27T11:12:09.776219+00:00 shinyapps[472567]:   ODBC connection failed
2018-09-27T11:12:09.777796+00:00 shinyapps[472567]: Warning: Error in sqlExecute: odbcValidChannel(channel) is not TRUE
2018-09-27T11:12:09.790861+00:00 shinyapps[472567]:   63: <Anonymous>
2018-09-27T11:12:09.791070+00:00 shinyapps[472567]: Error in sqlExecute(channel = dbhandle, query = query, fetch = TRUE, stringsAsFactors = FALSE) : 
2018-09-27T11:12:09.791072+00:00 shinyapps[472567]:   odbcValidChannel(channel) is not TRUE
2018-09-28T08:55:22.115455+00:00 shinyapps[472567]: Server version: 1.6.8-6
2018-09-28T08:55:22.115480+00:00 shinyapps[472567]: R version: 3.5.1
2018-09-28T08:55:22.115487+00:00 shinyapps[472567]: httpuv version: 1.4.5
2018-09-28T08:55:22.115487+00:00 shinyapps[472567]: rmarkdown version: NA
2018-09-28T08:55:22.350938+00:00 shinyapps[472567]: Starting R with process ID: '20'
2018-09-28T08:55:22.115534+00:00 shinyapps[472567]: htmltools version: 0.3.6
2018-09-28T08:55:22.115479+00:00 shinyapps[472567]: LANG: en_US.UTF-8
2018-09-28T08:55:22.115506+00:00 shinyapps[472567]: RJSONIO version: NA
2018-09-28T08:55:22.115500+00:00 shinyapps[472567]: knitr version: NA
2018-09-28T08:55:22.350937+00:00 shinyapps[472567]: 
2018-09-28T08:55:22.115486+00:00 shinyapps[472567]: shiny version: 1.1.0
2018-09-28T08:55:22.344620+00:00 shinyapps[472567]: Using jsonlite for JSON processing
2018-09-28T08:55:22.115501+00:00 shinyapps[472567]: jsonlite version: 1.5
2018-09-28T08:55:22.115658+00:00 shinyapps[472567]: Using pandoc at /opt/connect/ext/pandoc2
2018-09-28T08:55:22.377816+00:00 shinyapps[472567]: Loading required package: RODBC
2018-09-28T08:55:22.412749+00:00 shinyapps[472567]: 
2018-09-28T08:55:22.412752+00:00 shinyapps[472567]: Attaching package: ‘RODBCext’
2018-09-28T08:55:22.412753+00:00 shinyapps[472567]: 
2018-09-28T08:55:22.413593+00:00 shinyapps[472567]: The following objects are masked from ‘package:RODBC’:
2018-09-28T08:55:22.413594+00:00 shinyapps[472567]: 
2018-09-28T08:55:22.413594+00:00 shinyapps[472567]:     odbcFetchRows, sqlFetchMore
2018-09-28T08:55:22.413595+00:00 shinyapps[472567]: 
2018-09-28T08:55:22.423327+00:00 shinyapps[472567]: 
2018-09-28T08:55:22.423329+00:00 shinyapps[472567]: Listening on http://127.0.0.1:32933
2018-09-28T08:55:26.652028+00:00 shinyapps[472567]: Warning in odbcDriverConnect("driver={SQL Server};server=databuilt.database.windows.net;port=;database=;uid=;pwd=") :
2018-09-28T08:55:26.652030+00:00 shinyapps[472567]:   [RODBC] ERROR: state 01000, code 0, message [unixODBC][Driver Manager]Can't open lib 'SQL Server' : file not found
2018-09-28T08:55:26.652451+00:00 shinyapps[472567]: Warning in odbcDriverConnect("driver={SQL Server};server=databuilt.database.windows.net;port=;database=;uid=;pwd=") :
2018-09-28T08:55:26.652453+00:00 shinyapps[472567]:   ODBC connection failed
2018-09-28T08:55:26.653941+00:00 shinyapps[472567]: Warning: Error in sqlExecute: odbcValidChannel(channel) is not TRUE
2018-09-28T08:55:26.674395+00:00 shinyapps[472567]:   63: <Anonymous>
2018-09-28T08:55:26.674643+00:00 shinyapps[472567]: Error in sqlExecute(channel = dbhandle, query = query, fetch = TRUE, stringsAsFactors = FALSE) : 
2018-09-28T08:55:26.674644+00:00 shinyapps[472567]:   odbcValidChannel(channel) is not TRUE

我真的很困惑，这是服务器问题还是其他问题？

具有数据库数据的闪亮应用程序在本地工作，但在shinyapps.io中不起作用

0 个答案: