Code review Note 1

A Java Web project CodeReview results

1. Too much coding and transcoding code
   String uid = new string (request. getparameter ("T1"). getbytes ("ISO8859-1"), "GBK ");
2. Use "ABC". equalsignorecase (s), do not use S. Equals ("ABC ")
3. Do not provide useless Constructors
4. Do not provide main (). Use JUnit
5. Does the file name contain spaces? Case Insensitive
6. Too many redundant code:
   Report/template1.jsp why does the Code for uploading files appear?
   What is the useless button operation code in sqlview/JS/sqlview. js?
7. Use action whenever possible to encapsulate large Java code segments;
8. Javascript is too messy! There is a West Block in the east part of the page;
9. How can I use Js for permission determination?