How to read a text file in a JSP?

[xumingxian]

I try to read a list of parameters from a user specified text file (a tab delimited *.txt in Excel), which stored in user's local driver. These parameters will be insert into a database table as one of criteria for a user's query. I can not use a JavaBean to do this due to the server-side JavaBean does not recognize any user's local driver. If a javascript in client-side could copy this *.txt to a designated network mapped driver, then a JavaBean can process this file to act on database.

I don't know how to implement this via javascripts. Please help! Thanks in advance

 

[rac2]

If Javascript could read files on the local drive, then it could copy the data in the files to form fields and send them to the web server; you know things like my .pst files, where my address book is stored, and other good stuff. So that would be a big security problem. I don't think Javascript is allowed to do that.

Could you provide your users with a form field for uploading that text file; save it on your server and then read it?

<input type=&quot;file&quot; name=&quot;my_criteria&quot;>

 

[xumingxian]

Thanks for the help.
I do have the form for user to enter queryName and fileName. I used a javascript to check if both get entered. But I don't know how to "upload" the text file.

 

[rac2]

OK here is what I found in the Java forum by searching on jsp file upload.

http://www.servlets.com/cos/index.html

You need something on the server-side to process the file which is sent in the request body. Superficial look at the above link appears to be what you are looking for.

 

[areznik]

Apache has a whole fileupload framework, check it out from

http://jakarta.apache.org/commons/fileupload/index.html