Video: Kuv yuav ntxiv kev cai deserializer rau Jackson li cas?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Rau tsim a kev cai deserializer , peb yuav tsum tsim ib chav kawm txuas ntxiv StdDeserializer thiab tom qab ntawd hla nws deserialize () txoj kev. Peb tuaj yeem siv tau kev cai deserializer yog los ntawm kev sau npe nrog ObjectMapper lossis sau npe hauv chav kawm nrog @JsonDeserialize.
Tsis tas li ntawd, Jackson deserialize JSON li cas?
Cov lus piav qhia @JsonSetter qhia Jackson rau deserialize tus JSON rau hauv Java khoom siv lub npe muab rau hauv tus txheej txheem setter. Siv cov lus piav qhia no thaum koj JSON cov npe khoom yog sib txawv rau cov teb ntawm Java object class, thiab koj xav qhia lawv.
Tsis tas li ntawd, JSON deserializer yog dab tsi? JSON yog hom ntawv uas encodes cov khoom hauv ib txoj hlua. Serialization txhais tau tias hloov ib yam khoom rau hauv txoj hlua ntawd, thiab deserialization yog nws inverse operation (hloov hlua -> object). Qhov no yog hu ua deserialization.
Cov neeg tseem nug, Jackson Deserialization yog dab tsi?
Jackson Deserialization . Cov Jackson JSON processor muaj lwm txoj hauv kev rau Java serialization los ntawm kev muab cov ntaub ntawv khi rau serialize Java khoom rau JSON thiab deserialize JSON rov qab mus rau Java khoom. Cov kev tawm tsam no tau qhib los ntawm polymorphic hom tuav thiab deserialization rau overly general superclasses.
Puas yog GSON zoo dua Jackson?
Jackson yog tsis tu ncua sai dua GSON thiab JSONSmart. Boon JSON parser thiab tus tshiab Groovy 2.3 JSON parser sai dua Jackson . Lawv nrawm dua nrog InputStream, Reader, nyeem cov ntaub ntawv, byte, thiab char thiab String.
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