SQLServer过滤文件名特殊字符（利用SQLServer修改文件物理地址名称）

declare @cmd nvarchar(2000)
    declare @messageid nvarchar(200)
    declare @serialid nvarchar(200)
    declare @oldFileName nvarchar(500)
    declare @fileName nvarchar(500)
    declare @filePath nvarchar(4000)
    declare @oldfilePath nvarchar(4000)  --将路径D：改成D$
    declare @newFilePath nvarchar(4000)
    declare ccur cursor for select d.MessageId,m.serialid,m.AttachmentName,m.AttachmentPath from d
			left join r on d.MessageID=r.MessageID
			left  join DataAttachment m on m.MessageID=d.MessageID
		where  d.messageid='0.abe3b3d58161ccb3de7ab63754bb3f15'  --通过数据库查找所需要的附件
	             open ccur
	             fetch ccur into @messageid,@serialid,@fileName,@filePath
	             while @@fetch_status=0
                 begin
                    --判断附件文件名中是否含有特殊字符
                    if CHARINDEX('+',@filename)>0 or CHARINDEX('$',@filename)>0 or CHARINDEX('&',@filename)>0  --含有+、$、&
                    begin

                       set @[email protected]
                       set @filename=replace(@filename,'+','')
                       set @filename=replace(@filename,'$','')
                       set @filename=replace(@filename,'&','')    --过滤这些特殊字符，替换后新的文件名
                       set @newFilePath=dbo.GetDirectoryPath(@filePath) + '\' + @filename  --新路径名(<span style="font-family: Arial, Helvetica, sans-serif;">dbo.GetDirectoryPath方法为根据路径获取文件目录</span><span style="font-family: Arial, Helvetica, sans-serif;">)</span>
                       --旧路径名更改成磁盘驱动
                       set @oldfilePath=replace(@filePath,'D:','D$')
                       set @oldfilePath='\\192.168.21.36\' + @oldfilePath   --附件在远程服务器下面，如果不是远程，不用加磁盘路径

                       -- exec master.dbo.xp_cmdshell 'net use \\<span style="font-family: Arial, Helvetica, sans-serif;">192.168.21.36</span><span style="font-family: Arial, Helvetica, sans-serif;">\d$ "123456" /user:"192.168.21.36\administrator"'</span>
                       --exec  master.dbo.xp_cmdshell   'ren   \\<span style="font-family: Arial, Helvetica, sans-serif;">192.168.21.36</span><span style="font-family: Arial, Helvetica, sans-serif;">\d$\Book1.xls,Book2.xls'</span>
                       set @cmd='ren '  + @oldfilePath + ',' + @filename + ''    --拼凑需要自行的命令
                       --修改文件物理位置名称(连接远程服务器及其需要修改文件名所在的盘符)
                       exec master.dbo.xp_cmdshell 'net use \\192.168.21.36\d$ "123456" /user:"192.168.21.36\administrator"'
                       exec  master.dbo.xp_cmdshell  @cmd  [email protected]的长度必须设置具体数据，不能设置为nvarchar(max)，会报“过程需要类型为 'varchar' 的参数 'command_string'”错误

                       --插入文件名修改日志表
                       insert into DataFileNameUpdateLog(messageid,oldFileName,newFileName,oldFilePath,newFilePath)
                       values(@messageid,@oldfileName,@filename,@filePath,@newFilePath)
                       --根据serialid更新新文件名和新路径(serialid为唯一性)
                       update A set [email protected],[email protected] where [email protected]

                       --给我插入消息提醒
                       declare @content nvarchar(max)
                       set @content='集团来文附件名含有特殊符号，已过滤，请注意查看。serialid:' + @serialid + ',messageid:' + @messageid +
                       ' ,原文件名:' + @oldfileName + ',新文件名:' + @filename + '(系统自动发送)'
                       exec aa.dbo.[aaRemind] 0,'',11182,@content
                    end                  

                  fetch ccur into @messageid,@serialid,@fileName,@filePath

                  end

                  close ccur
 	              deallocate ccur
  end

根据路径获取文件目录dbo.GetDirectoryPath方法

-- =============================================
-- Author:        Paul Griffin
-- Create date:   18 January 2015
-- Description:   Returns the path without the file name
--                from a full path:
--                    D:\Temp\Resources\Images\My.Picture.jpg
--                ==> D:\Temp\Resources\Images
-- =============================================
CREATE FUNCTION [dbo].[GetDirectoryPath]
(
    @Path NVARCHAR(MAX)
)
RETURNS NVARCHAR(MAX)
AS
BEGIN
    DECLARE @FileName NVARCHAR(MAX)
    DECLARE @ReversedPath NVARCHAR(MAX)
    DECLARE @PathLength INT  

    SET @ReversedPath = REVERSE(@Path)
    SELECT @PathLength = CHARINDEX('\', @ReversedPath)
    SELECT @FileName = LEFT(@Path, LEN(@Path) - @PathLength)
    RETURN @FileName
END  

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