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fastjson是什么？

fastjson是一种Java语言的JSON处理工具，它是阿里巴巴公司开源的一个高性能、功能强大、易用性良好的JSON库。fastjson具有快速、简单、安全、便捷、高效等特点，被广泛应用于各种Java应用程序中。以下是fastjson的应用步骤：引入fastjson：可以使用maven或gradle等包管理工具引入f...

开发笔记·2024-03-19

available: expected at least 1 bean which qualifies as autowire candidate

available:expectedatleast1beanwhichqualifiesasautowirecandidate这个错误我也是找了半天,最后排查的时候发现是自己的实现类写错了,所以注入不进去.出现这个错误一般有四个方向排查查看接口实现类是否加入注解，如service、repository等查看spring...

开发笔记·2023-10-20

ORA-44739: Cannot drop the last group.

文档解释ORA-44739:Cannotdropthelastgroup.Cause:Anattemptwasmadetodropthelastgroupintheindex.Action:UsetheDROPINDEXstatementinstead.ORA-44739是Oracle数据库中的一个错误代码。它表明，用...

IT技术学习·2023-07-28

ORA-32415: fast refreshable remote materialized view on a detail table with commit SCN-based materialized view log is not supported

文档解释ORA-32415:fastrefreshableremotematerializedviewonadetailtablewithcommitSCN-basedmaterializedviewlogisnotsupportedCause:Thematerializedviewcreationfailedbeca...

IT技术学习·2023-07-28

ORA-32313: REFRESH FAST of “string”.”string” unsupported after PMOPs

文档解释ORA-32313:REFRESHFASTof“string”.”string”unsupportedafterPMOPsCause:APartitionMaintenanceOperation(PMOP)hasbeenperformedonadetailtabl...

IT技术学习·2023-07-28

ORA-32335: dimension must have at least one level

文档解释ORA-32335:dimensionmusthaveatleastonelevelCause:Anlevel-lessdimensionisnotallowed.Action:Donotdroptheonlylevelofadimension.ORA-32335:dimensionmusthaveatleas...

IT技术学习·2023-07-28

ORA-31673: worker process interrupt for normal exit by master process

文档解释ORA-31673:workerprocessinterruptfornormalexitbymasterprocessCause:Aworkerprocesswasrequestedtocleanupandexitbecausethemasterprocessisdoinganormalexit.Action...

IT技术学习·2023-07-28

ORA-48407: DESCRIBE and QUERY commands need at least relation name argument

文档解释ORA-48407:DESCRIBEandQUERYcommandsneedatleastrelationnameargumentCause:ThisisnorelationnameisinputasargumentAction:Needuserstoinputatleasttherelationname这是一...

IT技术学习·2023-07-28

ORA-23434: master site string not known for object group

文档解释ORA-23434:mastersitestringnotknownforobjectgroupCause:Thesitenamegivenasanargumenttoaroutinewasnotalreadyknowntothereplicatedobjectgroup.Action:Executethedb...

IT技术学习·2023-07-28

ORA-19920: RMAN does not support PKI-based master key for encryption.

文档解释ORA-19920:RMANdoesnotsupportPKI-basedmasterkeyforencryption.Cause:AnattemptwasmadetouseOraclepublickeyinfrastructure(PKI)basedmasterkeyalgorithm.RMANonlysup...

IT技术学习·2023-07-28

ORA-25533: FAST_START_IO_TARGET or LOG_CHECKPOINT_INTERVAL is specified

文档解释ORA-25533:FAST_START_IO_TARGETorLOG_CHECKPOINT_INTERVALisspecifiedCause:AnattempttostartMTTRadvisorywasmade,whichfailedbecauseeitherFAST_START_IO_TARGETorLO...

IT技术学习·2023-07-28

ORA-27049: unable to seek to and read the last block

文档解释ORA-27049:unabletoseektoandreadthelastblockCause:anattemptwasmadetoseektoandreadthelastblockinfile,additionalinformationindicateswhichfunctionencounterederr...

IT技术学习·2023-07-28

ORA-56867: Cannot connect to Master Diskmon on pipe “string”

文档解释ORA-56867:CannotconnecttoMasterDiskmononpipe“string”Cause:MasterDiskmonwasnotrunningorthelisteningpipewasdeleted.Action:Lookatthe$ORA_CRS_HOME/l...

IT技术学习·2023-07-28

ORA-38489: predicate table creation failed due to: ORAstring

文档解释ORA-38489:predicatetablecreationfaileddueto:ORAstringCause:Predicatetablecreationfailedduetothereportederror.Action:SetserveroutputONforadditionalinformatio...

IT技术学习·2023-07-28

ORA-47989: password should differ by at least 3 characters

文档解释ORA-47989:passwordshoulddifferbyatleast3charactersCause:Thepasswordspecifieddoesnotdifferfromthepreviousonebymorethan3charactersAction:Pleasespecifyapasswor...

IT技术学习·2023-07-28