Video: Kev siv JSON hauv Java yog dab tsi?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
JSON (ib lub ntsiab lus rau JavaScript Object Notation) yog ib hom kev sib hloov cov ntaub ntawv sib hloov thiab feem ntau yog siv rau kev sib txuas lus ntawm cov neeg siv khoom. Nws yog ob qho tib si nyeem / sau tau yooj yim thiab cov lus ywj pheej. Tus nqi JSON tuaj yeem yog lwm yam khoom JSON, array, tus lej, txoj hlua, boolean (qhov tseeb / tsis tseeb) lossis null.
Tom qab ntawd, peb puas tuaj yeem siv JSON hauv Java?
Cov json . lub tsev qiv ntawv yooj yim tso cai rau peb nyeem thiab sau ntawv JSON cov ntaub ntawv hauv Java . Hauv lwm lo lus, peb ua tau encode thiab txiav txim siab JSON khoom hauv java ua siv json . pob ntawv yooj yim muaj cov chav kawm tseem ceeb rau JSON API.
Tsis tas li ntawd, vim li cas peb thiaj siv JSON? Cov JSON hom ntawv yog feem ntau siv rau serializing thiab xa cov ntaub ntawv tsim los ntawm kev sib txuas network. Nws yog siv Feem ntau xa cov ntaub ntawv ntawm tus neeg rau zaub mov thiab lub vev xaib thov, ua lwm txoj hauv kev rau XML. JSON yog JavaScript Object Notation.
Cov lus nug tseem yog, JSON yog dab tsi thiab vim li cas nws thiaj siv?
JSON , lossis JavaScript Object Notation, yog qhov tsawg kawg nkaus, nyeem tau hom ntawv rau kev teeb tsa cov ntaub ntawv. Nws yog siv Feem ntau xa cov ntaub ntawv ntawm tus neeg rau zaub mov thiab lub vev xaib thov, ua lwm txoj hauv kev rau XML. Squarespace siv JSON khaws thiab teeb tsa cov ntsiab lus ntawm qhov chaw tsim nrog CMS.
JSON piv txwv yog dab tsi?
JSON tuaj yeem nqa daim ntawv ntawm txhua hom ntaub ntawv uas siv tau rau kev suav nrog hauv JSON , tsis yog arrays lossis khoom. Yog li ntawd rau piv txwv , ib txoj hlua los yog tus lej yuav siv tau JSON khoom. Tsis zoo li hauv JavaScript code nyob rau hauv cov khoom yam khoom tej zaum yuav unquoted, nyob rau hauv JSON tsuas yog hais cov hlua yuav raug siv los ua khoom.
Pom zoo:
Dab tsi ntawm cov hauv qab no yog qhov zoo ntawm kev siv cov khoom siv pom kev hauv kev hais lus?
Qhov txiaj ntsig tseem ceeb ntawm kev siv cov khoom siv pom hauv koj cov lus hais yog tias lawv ua kom cov neeg tuaj saib muaj kev txaus siab, hloov kev mloog ntawm tus neeg hais lus, thiab ua rau tus neeg hais lus muaj kev ntseeg siab ntau dua hauv kev nthuav qhia tag nrho
Dab tsi yog qhov txawv ntawm cov neeg siv kev paub thiab kev paub ntawm cov neeg siv khoom?
User Experience (UX) cuam tshuam nrog tib neeg cuam tshuam nrog koj cov khoom thiab cov kev paub uas lawv tau txais los ntawm kev sib cuam tshuam. Customer Experience (CX), incontrast, encompasses tag nrho cov kev sib cuam tshuam ib tug neeg muaj nrog koj hom
Dab tsi yog kev siv pob JSON hauv node JS?
Pob. json yog ib qho yooj yim JSON (Java Script Object Notation) cov ntaub ntawv uas muaj tag nrho cov ntaub ntawv metadata txog Node JS Project lossis daim ntawv thov. Txhua Node JS Pob lossis Module yuav tsum muaj cov ntaub ntawv no ntawm cov npe hauv paus los piav qhia nws cov metadata hauv cov hom JSON Hom Hom
Dab tsi yog kev siv overriding sib npaug txoj kev hauv Java?
Override sib npaug thiab hashCode hauv Java sib npaug () txoj kev siv los sib piv Cov Khoom rau kev sib npaug thaum hashCode yog siv los tsim cov lej lej sib npaug rau cov khoom ntawd
Dab tsi yog kev siv cov ntawv cim kev cai li cas koj nkag mus rau hauv Apex cov chav kawm thiab hauv Visualforce nplooj ntawv?
Cov ntawv sau kev cai tso cai rau cov neeg tsim khoom tsim cov ntawv thov ntau hom lus los ntawm kev nthuav qhia cov ntaub ntawv (piv txwv li, pab cov ntawv lossis cov lus yuam kev) hauv tus neeg siv hom lus. Cov ntawv sau kev cai yog cov ntawv sau muaj txiaj ntsig uas tuaj yeem nkag tau los ntawm Apex cov chav kawm, nplooj ntawv Visualforce, lossis cov khoom siv xob laim