- Foxtable(狐表) (http://foxtable.com/bbs/index.asp)
-- 专家坐堂 (http://foxtable.com/bbs/list.asp?boardid=2)
---- FTP都加上了TRY语句,还是会报错 (http://foxtable.com/bbs/dispbbs.asp?boardid=2&id=192617)
-- 发布时间：2024/7/5 13:50:00
-- FTP都加上了TRY语句,还是会报错
If _FTP_正在下载 = True Then
Return True
End If
_FTP_正在下载 = True
\' 下载所有扩展列附件(图片、文件)
Dim FTP As New FTPClient
FTP.Host = _FTP_Abbr_Host
FTP.Password = _FTP_Abbr_Pass
FTP.Account = _FTP_Abbr_Acco
FTP.Port = _FTP_Abbr_Port
FTP.RootDir = _FTP_Abbr_Root
FTP.Connect
If FTP.Connect = False Then
If Forms("登录日志").Opened = True AndAlso Forms("登录日志").Controls.Contains("DT_List") = True Then
Dim MESS As WinForm.ListBox = Forms("登录日志").Controls("DT_List")
MESS.ComboList = MESS.ComboList & "|" & "FTP连接失败!" & Date.Now()
End If
_FTP_正在下载 = False
Return False
Else
If Forms("登录日志").Opened = True AndAlso Forms("登录日志").Controls.Contains("DT_List") = True Then
Dim MESS As WinForm.ListBox = Forms("登录日志").Controls("DT_List")
MESS.ComboList = MESS.ComboList & "|" & "FTP目录" & FTP.RootDir & "|" & "FTP启动" & Date.Now()
End If
End If
Dim 成功 As Integer = 0
Dim 失败 As Integer = 0
Dim 跳过 As Integer = 0
Dim 执行 As Integer = 0
Dim 丢失 As Integer = 0
Dim 条件 As String = " And _New_Acc = \'" & _登录人 & "\'"
If Functions.Execute("Acc_Into", "{系统管理组}|{报表打印组}") = True Then
条件 = ""
End if
For Each DT As DataTable In DataTables
For Each DC As DataCol In DT.DataCols
If DC.ExtendType = ExtendTypeEnum.Images OrElse DC.ExtendType = ExtendTypeEnum.File OrElse DC.ExtendType = ExtendTypeEnum.FileS Then
Dim drs As List(Of DataRow) = DT.SQLSelect(DC.Name & " Is Not Null " & 条件)
For Each dr As DataRow In drs
Dim Files As String = DR(DC.NAME)
Dim Values() As String
Values = Files.Split(vbCrLf)
For Index As Integer = 0 To Values.Length - 1
If _FTP_下载终止 = True Then
Return True
End If
执行 = 执行 + 1
Dim NetFile As String = Values(Index)
If NetFile = "" Then
Continue For \' 下一个循环
End If
\' 排除那些文件
\' If NetFile.Contains("png") OrElse NetFile.Contains("pg") OrElse NetFile.Contains("ls") Then
\' Continue For \' 下一个循环
\' End If
Dim LocFile As String = ProjectPath & "\\RemoteFiles\\" & NetFile.Replace("/", "\\")
LocFile = LocFile.Replace("\\\\", "\\")
If FTP.Connect = False Then \' FTP连接失败时
StatusBar.Message3 = "FTP连接失败!" & Date.Now()
_FTP_正在下载 = False
Return False
End If
Try
If ftp.FileExists(NetFile) = False Then \'如果存在则下载
丢失 = 丢失 + 1
Continue For \' 下一个循环
End If
Catch ex As Exception
If Forms("登录日志").Opened = True AndAlso Forms("登录日志").Controls.Contains("DT_List") = True Then
Dim MESS As WinForm.ListBox = Forms("登录日志").Controls("DT_List")
MESS.ComboList = MESS.ComboList & "|" & "FTP远程检查异常:" & DT.Name & " " & DC.Name
MESS.ComboList = MESS.ComboList & "|" & NetFile
MESS.ComboList = MESS.ComboList & "|" & "√" & 成功 & "×" & 失败 & "☆" & 丢失 & "⌒" & 跳过 & "/" & 执行
End If
\'Continue For \' 下一个循环
End Try
Try
If FileSys.FileExists(LocFile) Then
Dim NetSize As Integer
NetSize = ftp.GetFileSize(NetFile)
Dim Locifo As New FileInfo(LocFile)
Dim LocSize As Integer = Locifo.Length
\'Output.Show(NetSize & " " & LocSize)
If NetSize = LocSize Then
跳过 = 跳过 + 1
Continue For \' 下一个循环
End If
End If
Catch ex As Exception
If Forms("登录日志").Opened = True AndAlso Forms("登录日志").Controls.Contains("DT_List") = True Then
Dim MESS As WinForm.ListBox = Forms("登录日志").Controls("DT_List")
MESS.ComboList = MESS.ComboList & "|" & "FTP文件比较异常:" & DT.Name & " " & DC.Name
MESS.ComboList = MESS.ComboList & "|" & NetFile
End If
\'Continue For \' 下一个循环
End Try
If FTP.Connect = False Then \' FTP连接失败时
StatusBar.Message3 = "FTP连接失败!" & Date.Now()
_FTP_正在下载 = False
Return False
End If
If FTP.Connect = True Then
Try
If ftp.Download(NetFile, LocFile) Then
成功 = 成功 + 1
Else
失败 = 失败 + 1
End If
Catch ex As Exception
If Forms("登录日志").Opened = True AndAlso Forms("登录日志").Controls.Contains("DT_List") = True Then
Dim MESS As WinForm.ListBox = Forms("登录日志").Controls("DT_List")
MESS.ComboList = MESS.ComboList & "|" & "FTP下载异常:" & DT.Name & " " & DC.Name
MESS.ComboList = MESS.ComboList & "|" & NetFile
End If
End Try
End If
If _FTP_下载终止 = True Then
Return True
End If
Next
Next
StatusBar.Message3 = "√" & 成功 & "×" & 失败 & "☆" & 丢失 & "⌒" & 跳过 & "/" & 执行 & " " & DT.Name & " " & DC.Name
End If
Next
Next
StatusBar.Message3 = "√" & 成功 & "×" & 失败 & "☆" & 丢失 & "⌒" & 跳过 & "|" & 执行
If Forms("登录日志").Opened = True AndAlso Forms("登录日志").Controls.Contains("DT_List") = True Then
Dim MESS As WinForm.ListBox = Forms("登录日志").Controls("DT_List")
MESS.ComboList = MESS.ComboList & "|" & StatusBar.Message3
MESS.ComboList = MESS.ComboList & "|" & "FTP完成下载"
End If
_FTP_完成下载 = True
_FTP_正在下载 = False
Return True
-- 发布时间：2024/7/5 14:08:00
--
提示的意思是集合已经被更改，无法进行遍历处理。这个和ftp应该没有关系，应该是try之外出现的错误
-- 发布时间：2024/7/5 14:41:00
--
为什么FTP检查文件是否存在,也会出错.那份文件在FTP文件服务器上是存在的
ftp.FileExists(NetFile) = False 这一句为什么会报错,执行了 Catch ex As Exception 做了记录
Try
If ftp.FileExists(NetFile) = False Then \'如果存在则下载
丢失 = 丢失 + 1
Continue For \' 下一个循环
End If
Catch ex As Exception
If Forms("登录日志").Opened = True AndAlso Forms("登录日志").Controls.Contains("DT_List") = True Then
Dim MESS As WinForm.ListBox = Forms("登录日志").Controls("DT_List")
MESS.ComboList = MESS.ComboList & "|" & "FTP远程检查异常:" & DT.Name & " " & DC.Name
MESS.ComboList = MESS.ComboList & "|" & NetFile
MESS.ComboList = MESS.ComboList & "|" & "√" & 成功 & "×" & 失败 & "☆" & 丢失 & "⌒" & 跳过 & "/" & 执行
End If
\'Continue For \' 下一个循环
End Try
[此贴子已经被作者于2024/7/5 14:42:57编辑过]
-- 发布时间：2024/7/5 14:58:00
--
看具体什么错误？
Try
If ftp.FileExists(NetFile) = False Then \'如果存在则下载
丢失 = 丢失 + 1
Continue For \' 下一个循环
End If
Catch ex As Exception
msgbox(ex.message)
……
-- 发布时间：2024/7/5 16:44:00
--
msgbox(ex.message)
出现这样的报错提示
对象引用未设置为对象的实例。
其他地方也经常有类似这样的报错
[此贴子已经被作者于2024/7/5 16:45:22编辑过]
-- 发布时间：2024/7/5 16:59:00
--
不可能啊，除非ftp是空的、
再调试看看
Try
msgbox(ftp is nothing)
If ftp.FileExists(NetFile) = False Then \'如果存在则下载
丢失 = 丢失 + 1
Continue For \' 下一个循环
End If
msgbox("NetFile=" & NetFile)
Catch ex As Exception
msgbox(ex.message) |
-- 发布时间：2024/7/5 23:18:00
--
Try
If FTP.Connect = True Then \' FTP连接失败时
If ftp.FileExists(NetFile) = False Then \'如果存在则下载
丢失 = 丢失 + 1
Continue For \' 下一个循环
End If
End If
Catch ex As Exception
Dim IsFTP As Boolean = ftp Is Nothing
FileSys.WriteAllText(ProjectPath & "Ftp_Files_Down_Err.Txt", "FTP Is Nothing =" & IsFTP & vbCrLf, True)
FileSys.WriteAllText(ProjectPath & "Ftp_Files_Down_Err.Txt", "检查文件存在NetFile =" & NetFile & vbCrLf, True)
FileSys.WriteAllText(ProjectPath & "Ftp_Files_Down_Err.Txt", ex.message & vbCrLf, True)
If Forms("登录日志").Opened = True AndAlso Forms("登录日志").Controls.Contains("DT_List") = True Then
Dim MESS As WinForm.ListBox = Forms("登录日志").Controls("DT_List")
Dim txt As String = DT.Name & " " & DC.Name
If MESS.ComboList.Contains(txt) = False Then
MESS.ComboList = MESS.ComboList & "|" & txt
End if
MESS.ComboList = MESS.ComboList & "|检查异常:" & NetFile
\'msgbox(ex.message)
End If
以下结果：
NetFile=/ST/YPJH/OX-2024-05-020/1.png
FTP Is Nothing: False /ST/YPJH/OX-2024-05-020/1.png
FTP Is Nothing =False
检查文件存在NetFile =/ST/YPJH/ST-2024-02-002/1/File/ST02037XN样品计划.xls
Object reference not set to an instance of an object.
FTP Is Nothing =False
检查文件存在NetFile =/ST/Morning/3566蓝色横线丝网.png
Object reference not set to an instance of an object.
FTP Is Nothing =False
检查文件存在NetFile =/ST/YPJH/ST-2024-06-026/4.png
Object reference not set to an instance of an object.
FTP Is Nothing =False
检查文件存在NetFile =/ST/YPJH/ST-2024-06-039/65.png
Object reference not set to an instance of an object.
FTP Is Nothing =False
检查文件存在NetFile =/ST/354.png
Object reference not set to an instance of an object.
[此贴子已经被作者于2024/7/5 23:19:39编辑过]
-- 发布时间：2024/7/6 8:57:00
--
这样调试看看输出什么错误结果
Try If FTP.Connect = True Then \' FTP连接失败时 If ftp.FileExists(NetFile) = False Then \'如果存在则下载 丢失 = 丢失 + 1 Continue For \' 下一个循环 End If End If Catch ex As Exception Dim IsFTP As Boolean = ftp Is Nothing FileSys.WriteAllText(ProjectPath & "Ftp_Files_Down_Err.Txt", "FTP Is Nothing =" & IsFTP & vbCrLf, True) FileSys.WriteAllText(ProjectPath & "Ftp_Files_Down_Err.Txt", "检查文件存在NetFile =" & NetFile & vbCrLf, True) Dim bu As new StringBuilder bu.AppendLine("Exception 错误记录 ++++++++") Dim v = ex Do While v IsNot Nothing bu.AppendLine( v.Message & vbcrlf & v.StackTrace) v = v.InnerException Loop bu.AppendLine("Exception 错误记录 ----------") FileSys.WriteAllText(ProjectPath & "Ftp_Files_Down_Err.Txt", bu.ToString & vbCrLf, True) …… |