Implementation of java web login verification code

This example shares the specific code of java web login verification code for your reference. The specific contents are as follows

use:

Controller: generate verification code

Jsp: display verification code

verification:

Get whether the code in the session is consistent with the code returned by the foreground

Tools:

Finally, a note: the login interceptor must release the generated verification code path! The login interceptor must release the generated verification code path!! The login interceptor must release the generated verification code path!!! Say important things three times~~

Final presentation:

The above is the whole content of this article. I hope it will be helpful to your study, and I hope you can support programming tips.