Givler, Eric wrote:
The problem is the
user double clicks [login] and can get two calls to the service method
to execute simultaneously. They both don't see a row, so they both do
an INSERT. One of the inserts fails due to a PK on the username.
See generateToken[1] and isTokenValid [2]. The token will be valid for
only one request. What to do with the invalid request (also the latest)
is up to you.
[1]
http://struts.apache.org/1.x/apidocs/org/apache/struts/action/Action.html#generateToken(javax.servlet.http.HttpServletRequest)
[2]
http://struts.apache.org/1.x/apidocs/org/apache/struts/action/Action.html#isTokenValid(javax.servlet.http.HttpServletRequest)
Cheers,
Manos
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