Video: Dab tsi yog tswj tau taum hauv JSF?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Tswj taum yog ib txwm Java Taum chav kawm sau npe nrog JSF . Hauv lwm lo lus, Managed Taum yog Java taum tswj los ntawm JSF lub moj khaum. Managed taum muaj cov getter thiab setter txoj kev, lag luam logic, los yog txawm a thaub qab taum (a taum muaj tag nrho cov HTML daim ntawv tus nqi). Managed taum ua haujlwm ua qauv rau UI tivthaiv.
Ib yam li ib tug yuav nug, dab tsi yog cov taum thaub qab hauv JSF?
Rov qab taum hauv JSF yog ib tug subtype ntawm tswj tau Bean tab sis muaj cov khoom ntawm tag nrho lossis qee qhov ntawm UI tivthaiv hauv a JSF nplooj. Cov thaub qab taum yog pab tau rau UI tivthaiv validations, hloov dua siab tshiab, tshwm sim tuav thiab lwm yam. Nyob rau hauv lwm yam lus, thaub qab taum cov khoom khi rau UI Cheebtsam Hauv JSF nplooj.
Tsis tas li ntawd, JSF lub moj khaum yog dab tsi? Java Server Faces ( JSF ) yog Java-based web application lub moj khaum npaj los ua kom yooj yim txhim kho kev koom ua ke ntawm web-based user interfaces. JavaServer Faces yog ib qho qauv siv thev naus laus zis, uas tau ua tiav hauv qhov kev qhia tshwj xeeb los ntawm Java Community Process.
JSF saib Scope yog dab tsi?
Cov saib scope Nws yog qhov yooj yim heev, txij li nws tso cai rau tus qauv ntawm kev pib cov ntaub ntawv thaum koj thawj zaug nkag mus rau nplooj ntawv (ntawm qhov kev thov tsis yog ntsej muag, uas feem ntau yog GET thov) thiab tom qab ntawd khaws cov ntaub ntawv ntawd thaum koj ua haujlwm ntawm nplooj ntawv, ua postbacks, AJAX thov, lwm.
Java bean class yog dab tsi?
JavaBeans yog chav kawm uas encapsulate ntau yam khoom rau hauv ib yam khoom (the taum ). Nws yog ib java chav uas yuav tsum ua raws li cov lus pom zoo hauv qab no: Yuav tsum siv Serializable. Nws yuav tsum muaj ib tug pej xeem tsis-arg constructor. Txhua yam khoom hauv java taum yuav tsum yog tus kheej nrog pej xeem getters thiab setter txoj kev.
Pom zoo:
Dab tsi yog tus neeg sab nraud tswj thiab server sab tswj hauv asp net?
Client Controls yog khi rau cov neeg siv sab javascript cov ntaub ntawv thiab tsim lawv Html dynamically ntawm tus neeg siv sab, thaum Html ntawm Server Controls tau ua rau sab server siv cov ntaub ntawv muaj nyob rau hauv server sab ViewModel
Dab tsi yog qhov sib txawv ntawm kev tswj hwm hauv cov txheej txheem tswj?
Ib qho kev hloov pauv hloov pauv yog qhov hloov pauv ywj pheej hauv kev sim. Lub manipulated los yog ywj siab sib txawv yog tus uas koj tswj. Cov kev hloov pauv uas tswj tau yog qhov uas koj ua kom tas mus li. Cov lus teb sib txawv los yog qhov sib txawv yog qhov tshwm sim los ntawm qhov kev sim (piv txwv li nws yog qhov tso zis sib txawv)
Qhov twg hauv qab no yog suav tias yog kev tswj hwm kev ua haujlwm ntawm kev tswj hwm database DBMS)?
Databases uas nqa lawv cov ntaub ntawv nyob rau hauv daim ntawv ntawm cov ntxhuav thiab uas sawv cev rau kev sib raug zoo siv txawv teb chaws yuam sij yog hu ua discrete databases. Kev tswj hwm kev ua haujlwm ntawm kev tswj hwm qhov system (DBMS) suav nrog thaub qab cov ntaub ntawv database
Dab tsi yog tswj lag hauv kev tswj hwm?
Definition of process lag. Hauv kev ua cov ntxhia, qhov qeeb lossis qeeb hauv cov lus teb ntawm kev tswj hwm qhov sib txawv ntawm qhov taw tes ntawm kev ntsuas mus rau qhov kev hloov pauv ntawm tus nqi ntawm qhov hloov pauv hloov pauv
Kev tswj hwm kev tswj hwm hauv kev ruaj ntseg ntaub ntawv yog dab tsi?
Kev tswj hwm kev nyab xeeb (tseem hu ua cov txheej txheem tswj hwm) feem ntau yog cov txheej txheem thiab cov cai uas tau muab tso rau hauv qhov chaw los txheeb xyuas thiab qhia cov neeg ua haujlwm hauv kev cuam tshuam nrog cov koom haum cov ntaub ntawv rhiab