In jsp, how to judge whether the verification code is correct?

This function generally has ***3 pages: \ x0d \ index.jsp is used for login, and the verification code is displayed in it, that is, \ x0d \ image.jsp is used for generating verification code, with comments and detailed instructions. If not, you will have a detailed explanation when you copy it to Baidu. \ x0d \ result.jsp is used to judge whether the input is correct. \x0d\ I'm sure you can see clearly ... don't forget to adopt. Thank you. . . \ x0d \ \ x0d \ 1 . index . JSP \ x0d \ \ x0d \ \ x0d \ \ x0d \ \ x0d \ \ x0d \ 2 . image . JSP \ x0d \ \ x0d \ 255)\ x0d \ fc = 255； \ x0d \ if(BC & gt； 255)\ x0d \ BC = 255； \ x0d \ int r = fc+random . nextint(BC-fc)； \ x0d \ int g = fc+random . nextint(BC-fc)； \ x0d \ int b = fc+random . nextint(BC-fc)； \x0d\ Returns the new color (r, g, b); \ x0d \ } % & gt\ x0d \ \ x0d \ \ x0d \ 3 . result . JSP \ x0d \ \ x0d \ \ x0d \ body & gt； html & gt