批处理文件> JavaScript> WinSCP>检查文件是否存在 [英] Batch File > Javascript > WinSCP > Check if file exists
问题描述
我有一个批处理文件，它将启动一个.js文件，该文件通过WinSCP检查文件是否存在，如果不存在，则返回到该批处理文件.
I have a batch file that will launch a .js file which, via WinSCP, checks if a file exists and returns to the batch file if it does or not.
问题是:总是返回找不到，而且我不知道为什么.我不确定在这种情况下如何使用通配符.
The problem IS: It always returns not found, and I cannot figure out why. I am unsure how to use a wildcard in this scenario.
批处理文件如下:
cscript /nologo file.js
if errorlevel 1 goto notfound
exit
:notfound
(another script to copy a file over)
一次只能在服务器上存在一个文件.因此，每十分钟，该批处理文件将运行一次，检查是否有文件，如果没有，请复制一个.
Only one file can exist on the server at once. So every ten min, this batch file will run, check if there is a file, if not, copy one over.
file.js:
// Configuration
// Remote file search for
var FILEPATH = "../filepath/TSS*";
// Session to connect to
var SESSION = "mysession@someplace.come";
// Path to winscp.com
var WINSCP = "c:\\program files (x86)\\winscp\\winscp.com";
var filesys = WScript.CreateObject("Scripting.FileSystemObject");
var shell = WScript.CreateObject("WScript.Shell");
var logfilepath = filesys.GetSpecialFolder(2) + "\\" + filesys.GetTempName() + ".xml";
var p = FILEPATH.lastIndexOf('/');
var path = FILEPATH.substring(0, p);
var filename = FILEPATH.substring(p + 1);
var exec;
// run winscp to check for file existence
exec = shell.Exec("\"" + WINSCP + "\" /log=\"" + logfilepath + "\"");
exec.StdIn.Write(
"option batch abort\n" +
"open \"" + SESSION + "\"\n" +
"ls \"" + path + "\"\n" +
"exit\n");
// wait until the script finishes
while (exec.Status == 0)
{
WScript.Sleep(100);
WScript.Echo(exec.StdOut.ReadAll());
}
if (exec.ExitCode != 0)
{
WScript.Echo("Error checking for file existence");
WScript.Quit(1);
}
// look for log file
var logfile = filesys.GetFile(logfilepath);
if (logfile == null)
{
WScript.Echo("Cannot find log file");
WScript.Quit(1);
}
// parse XML log file
var doc = new ActiveXObject("MSXML2.DOMDocument");
doc.async = false;
doc.load(logfilepath);
doc.setProperty("SelectionNamespaces",
"xmlns:w='http://winscp.net/schema/session/1.0'");
var nodes = doc.selectNodes("//w:file/w:filename[@value='" + filename + "']");
if (nodes.length > 0)
{
WScript.Echo("File found");
// signalize file existence to calling process;
// you can also continue with processing (e.g. downloading the file)
// directly from the script here
WScript.Quit(0);
}
else
{
WScript.Echo("File not found");
WScript.Quit(1);
}
第4行显示:
var FILEPATH = "../filepath/TSS*";
我认为那颗星正在给我带来麻烦.我需要查找一个以TSS开始的文件，但最后要加上一个时间戳.所以我只需要在TSS之后使用通配符即可.
That star is what is giving me issues, i think. I need to look for a file which STARTS WITH TSS, but will have a time stamp tacked on the end. So i need to just use a wildcard after TSS.
所以我需要帮助的是:如果TSS *存在任何文件，则使此过程返回true
So what i need help with is: Making this process return true if any file exists with TSS*
任何帮助将不胜感激.
Any help would be much appreciated.
var nodes = doc.selectNodes("//w:file/w:filename[starts-with(@value, 'TSS')]");
此代码似乎不起作用.如果此代码有效，则似乎可以解决我所有的问题.
This code seems to not work. If this code worked, it seems like it would solve all my problems.
推荐答案
您需要在var nodes...行中更正xpath表达式.
尝试这样的事情:
You need to correct xpath expression in var nodes... line.
Try something like this:
doc.setProperty("SelectionLanguage", "XPath"); //added in edit
var nodes = doc.selectNodes("//w:file/w:filename[starts-with(@value, '" + filename + "')]");
，然后从FILEPATH中删除星号.
注意:为了使用XPath作为查询语言，第一行是必需的，而不是默认的(旧的)XSLPattern，它不支持诸如starts-with或contains之类的方法.
Note: first line is required in order to use XPath as the query language, not default (and old) XSLPattern which doesn't support methods such as starts-with or contains.
SelectionLanguage Property (MDSN).
这篇关于批处理文件> JavaScript> WinSCP>检查文件是否存在的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
