Video: Qhov kev thov Web Service yog dab tsi?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Lub sij hawm Web kev pabcuam (WS) yog ob qho tib si: lub server khiav ntawm lub khoos phis tawj, mloog rau thov ntawm ib qho chaw nres nkoj hauv lub network, ua haujlwm web cov ntaub ntawv (HTML, JSON, XML, duab), thiab tsim web daim ntawv thov kev pabcuam , uas ua hauj lwm hauv kev daws cov teeb meem tshwj xeeb tshaj qhov Web (WWW, Internet , Kuj paub, Web kev thov thiab teb yog dab tsi?
Cov kev pabcuam hauv Web siv HTTP (Hypertext Transfer Protocol) rau kev xa thov thiab teb dhau web . HTTP siv thov / teb cov txheej txheem, uas yog, kev sib txuas lus los yog hloov cov ntaub ntawv ntawm web server thiab browser yog ua tiav los ntawm HTTP thov thiab teb pob ntawv.
Tsis tas li ntawd, qhov txawv ntawm qhov kev pabcuam Web thiab API yog dab tsi? Lub xwb txawv yog a Web kev pabcuam txhawb kev sib tham nruab nrab ob lub tshuab hauv lub network. Ib API ua raws li ib tug interface nruab nrab ob txawv daim ntawv thov kom lawv sib txuas lus nrog ib leeg. Web kev pabcuam kuj tseem siv SOAP, REST, thiab XML-RPC raws li kev sib txuas lus.
Ua li no, cov kev pabcuam Web sib txawv yog dab tsi?
Muaj ob peb lub hauv paus hom kev pabcuam web : XML-RPC, UDDI, SOAP, thiab REST: XML-RPC (Chaw Taws Teeb Cov Txheej Txheem Hu) yog qhov yooj yim tshaj plaws XML raws tu qauv los pauv cov ntaub ntawv ntawm ntau yam khoom siv hauv lub network.
Lub hom phiaj ntawm Web Services yog dab tsi?
A web kev pabcuam yog ib chav ntawm cov cai tswj hwm uas tuaj yeem raug hu los ntawm kev siv HTTP. Ntawd yog, nws tuaj yeem qhib tau siv HTTP thov. Cov kev pabcuam hauv Web tso cai rau koj nthuav tawm cov haujlwm ntawm koj cov cai uas twb muaj lawm hauv lub network. Thaum nws nthuav tawm hauv lub network, lwm cov ntawv thov tuaj yeem ua tau siv kev ua haujlwm ntawm koj qhov program.
Pom zoo:
Dab tsi yog qhov sib txawv loj ntawm kev txheeb xyuas qhov yuam kev thiab kev kho cov lej yuam kev?
Ob qhov kev tshawb nrhiav qhov yuam kev thiab kev kho qhov yuam kev yuav tsum muaj qee qhov ntawm cov ntaub ntawv rov qab xa mus nrog cov ntaub ntawv tiag tiag; kev kho yuav tsum muaj ntau tshaj li kev tshawb nrhiav. Parity bits yog ib txoj hauv kev yooj yim rau kev tshawb nrhiav qhov yuam kev. Ib qho parity me ntsis yog ib qho ntxiv me ntsis xa nrog cov ntaub ntawv uas tsuas yog 1-ntsis suav ntawm cov ntaub ntawv
Qhov txawv ntawm qhov kev thov thiab kev thov yog dab tsi?
Raws li lub npe qhov txawv ntawm qhov kev thov andrequests yog qhov kev thov yog ua ntawm (l) whilerequests yog
Dab tsi yog qhov dav thawj qhov kev tshawb nrhiav thiab qhov tob thawj qhov kev tshawb fawb?
BFS sawv rau Breadth First Search. DFS sawv cev rau Kev Tshawb Nrhiav Qhov tob. 2. BFS (Breadth First Search) siv Queue cov qauv ntaub ntawv los nrhiav txoj hauv kev luv tshaj. BFS tuaj yeem siv los nrhiav ib qhov chaw luv tshaj plaws hauv cov duab tsis hnyav, vim tias hauv BFS, peb mus txog qhov kawg uas muaj qhov tsawg kawg nkaus ntawm cov npoo los ntawm qhov chaw vertex
Tus neeg thov kev thov yog dab tsi?
Ib daim ntawv thov tus thov kev pab yog ib daim ntawv thov nyob ib leeg uas khiav ntawm lub tshuab neeg siv khoom thiab tau teeb tsa ua haujlwm raws li J2EE tivthaiv. Tus neeg thov kev thov yog siv los ua cov haujlwm, xws li kev tswj hwm lossis kev tswj hwm
Dab tsi yog qhov txawv ntawm kev thov synchronous thiab asynchronous thov?
Synchronous: Ib qho kev thov synchronous thaiv tus neeg siv khoom kom txog thaum ua haujlwm tiav. Asynchronous Ib qho kev thov asynchronous tsis thaiv tus neeg siv khoom xws li browser teb. Lub sijhawm ntawd, tus neeg siv tuaj yeem ua lwm yam haujlwm. Hauv qhov xwm txheej zoo li no, javascript cav ntawm browser tsis raug thaiv