How to set the data type of csv-file to String?

This my csv record ex.
   ***** ,5/5,**** 

 When I open the csv by excel  after I exporting it by CsvUtil, 
 The record type is not correct. 
How can I do that I get the same  data as ex.  ?

I'm making an educated guess but I believe what you are seeing is Excel attempting to 'help' you by interpreting the second column as a date.  Open the exported file in Notepad or similar tool and I believe you'll see the data as you expected it.

Hope this helps,