Dab tsi yog cov lim dej hauv Java Web applications?
Dab tsi yog cov lim dej hauv Java Web applications?

Video: Dab tsi yog cov lim dej hauv Java Web applications?

Video: Dab tsi yog cov lim dej hauv Java Web applications?
Video: yog hmoov dab tsi. Zoo Xyooj (cover) 2024, Kaum ib hlis
Anonim

A lim yog a Java chav kawm uas tau thov los teb rau qhov kev thov rau cov peev txheej hauv a Web thov . Cov peev txheej suav nrog Java Servlets, JavaServer nplooj ntawv (JSP), thiab cov peev txheej zoo li qub xws li nplooj ntawv HTML lossis cov duab.

Ntawm no, kev siv cov lim dej hauv Java yog dab tsi?

A lim yog ib yam khoom uas tau hais los ntawm preprocessing thiab postprocessing ntawm qhov kev thov. Nws yog tsuas yog siv los ua lim cov haujlwm xws li hloov dua siab tshiab, txiav, compression, encryption thiab decryption, input validation thiab lwm yam. Lub servlet lim yog pluggable, piv txwv li nws nkag tau txhais hauv lub vev xaib.

Tsis tas li ntawd, koj yuav ua li cas tsim cov lim hauv Java? Yeej, muaj 3 kauj ruam mus tsim lub lim : - Sau ib Java chav kawm uas siv cov Lim interface thiab override lim cov txoj kev ua neej nyob. - Qhia qhov pib tsis ua haujlwm rau cov lim (yeem). - Qhia lim map, ib Java servlets lossis URL qauv.

Tsuas yog li ntawd, lim hauv Java nrog piv txwv yog dab tsi?

Java Servlet Lim piv txwv Kev qhia. Java Servlet Lim yog siv los cuam tshuam tus neeg thov kev thov thiab ua qee qhov ua ntej. Nws tseem tuaj yeem cuam tshuam cov lus teb thiab ua tom qab ua tiav ua ntej xa mus rau tus neeg siv khoom hauv daim ntawv thov web.

Dab tsi yog cov ntxaij lim dej hauv Web XML?

Cov lim tau txhais nyob rau hauv web . xml , thiab lawv yog daim ntawv qhia rau servlet lossis JSP. Thaum JSP thawv pib nrog lub web daim ntawv thov, nws tsim qhov piv txwv ntawm txhua tus lim uas tau tshaj tawm nyob rau hauv deployment descriptor.

Pom zoo: