Video: XML DOM parser yog dab tsi?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
DOM parser yog npaj rau kev ua haujlwm nrog XML raws li cov duab kos duab (ib tsob ntoo zoo li cov qauv) hauv kev nco- thiaj li hu ua Cov Ntaub Ntawv Cov Qauv ( DOM )“. In first, the parser traverses cov tswv yim XML file andcreates DOM cov khoom sib xws rau cov nodes hauv XML ntaub ntawv. Cov no DOM cov khoom sib txuas ua ke hauv ib tsob ntoo zoo li qauv.
Yog li ntawd, dab tsi yog parser hauv XML?
A parser yog ib daim ntawm cov kev pab cuam uas siv aphysical sawv cev ntawm qee cov ntaub ntawv thiab hloov nws mus rau hauv anin-nco daim ntawv rau qhov kev pab cuam tag nrho siv. Ib XMLparser yog a parser uas yog tsim los nyeem XML thiab tsim ib txoj hauv kev rau cov kev pab cuam siv XML . Muaj ntau hom sib txawv, thiab txhua tus muaj nws qhov zoo.
Tsis tas li ntawd, DOM parser ua haujlwm li cas? DOM parser parses tag nrho cov ntaub ntawv XML thiab thauj nws mus rau hauv lub cim xeeb; ces ua qauv nws nyob rau hauv ib tug "TOO" qauv kom yooj yim traversal los yog manipulation. Hauv luv, nws hloov cov ntaub ntawv XML rau hauv DOM los yog tsob ntoo qauv, thiab koj muaj totraverse ib qhov ntawm node kom tau yam koj xav tau.
Ib sab saum toj no, SAX thiab DOM parser hauv XML yog dab tsi?
DOM stands rau Document Object Model thaum SAX stands rau Simple API rau XML parsing . DOMparser load puv XML cov ntaub ntawv nyob rau hauv lub cim xeeb thiab tsim ib tug treerepresentation ntawm XML ntaub ntawv, thaum SAX yog ib qho kev tshwm sim XML parser thiab tsis load tag nrho XML documentin nco.
XML parsing ua haujlwm li cas?
XML - Parsers. XML parser yog ib tug softwarelibrary los yog ib pob uas muab interface rau clientapplications ua haujlwm nrog XML cov ntaub ntawv. Nws checks rau cov hom ntawv kom raug XML cov ntaub ntawv thiab tseem tuaj yeem siv tau XML cov ntaub ntawv. Lub hom phiaj ntawm a parser yog totransform XML nyob rau hauv ib tug nyeem tau code.
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