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spring中mapper层是什么意思?

mapper层的作用是对数据库进行数据持久化操作,他的方法语句是直接针对数据库操作的现在用mybatis逆向工程生成的。mapper层,其实就是dao层,主要是做数据持久层的工作,负责与数据库进行联络的一些任务都封装在此。...

RuoYi—一款开源的基于SpringBoot开发的轻量级Java快速开发框架

若依框架采用前后端分离的架构设计。后端基于SpringBoot,集成了许多常用的功能模块,包括权限管理、任务调度、数据字典、系统监控等。这些模块使得开发人员能够快速搭建系统基础功能,专注于业务逻辑的实现。前端使用了Vue.js作为主要的前端开发框架,结合了ElementUI等组件库,提供了用户友好的界面和丰富的交互体验...

Spring Security权限管理实现接口动态权限控制

下面就是关于“SpringSecurity权限管理实现接口动态权限控制”的完整攻略:在SpringSecurity中,我们可以使用基于注解的安全性,以控制方法响应、请求类型等。但是,如果我们需要跟具体的业务数据绑定的话,我们就需要根据规则来控制具体的访问权限。在这种情况下,就需要使用Spring...

ORA-55366: unknown namespace prefix “string”

文档解释ORA-55366:unknownnamespaceprefix“string”Cause:AnattemptwasmadetomakeuseofanundefinednamespaceprefixinOracleVirtualPrivateDatabase(VPD)metadata.A...

ORA-47346: Rule set string is used by one or more command rules.

文档解释ORA-47346:Rulesetstringisusedbyoneormorecommandrules.Cause:Thespecifiedrulesetwasusedbyexistingcommandrule(s).Action:Removethedependentcommandrulesandretryt...
IT技术学习 ·2023-07-28

ORA-39164: Partition string was not found.

文档解释ORA-39164:Partitionstringwasnotfound.Cause:Ifexportingorimportingoverthenetwork,theuserspecifiedapartitionnamethatwasnotfoundinthesourcedatabase.Forimportin...

ORA-39183: internal error string ocurred during decompression phase string

文档解释ORA-39183:internalerrorstringocurredduringdecompressionphasestringCause:Anunexpectederroroccurredwhiledecompressingdatabuffers.Action:ContactOracleCustomerS...

ORA-31037: Invalid XML attribute name string

文档解释ORA-31037:InvalidXMLattributenamestringCause:TheattributenameintheXMLdocumentdidnotmatchanythingintheassociatedschema.Action:Supplyonlyschema-definedorXMLst...

ORA-39034: Table string does not exist.

文档解释ORA-39034:Tablestringdoesnotexist.Cause:TheuserreferencedatableinanAPIthatdidnotexist.Action:CorrecttablenameandretryAPI.ORA-39034:Tablestringdoesnotexist.这...

ORA-41666: XML schema validation failed when validating against string

文档解释ORA-41666:XMLschemavalidationfailedwhenvalidatingagainststringCause:TheuserinputhasundefinedelementorattributeaccordingtotheprovidedXMLschemadefinition.Acti...

ORA-47362: error adding Rule string to Rule Set string, string

文档解释ORA-47362:erroraddingRulestringtoRuleSetstring,stringCause:AnunexpectederroroccurredaddingtheruletotherulesetAction:Pleasereviewthedefinitionforaccuracyandr...

ORA-26876: invalid processed low-watermark (current position=string; new position=string)

文档解释ORA-26876:invalidprocessedlow-watermark(currentposition=string;newposition=string)Cause:Anattemptwasmadetosettheprocessedlow-watermarktoavaluethatwaslesstha...

ORA-41633: specified rule class configuration not supported: “string”

文档解释ORA-41633:specifiedruleclassconfigurationnotsupported:“string”Cause:Anattemptwasmadetouseanunsupportedconfigurationfortheruleclass.Action:Remove...

ORA-26028: index string.string initially in unusable state

文档解释ORA-26028:indexstring.stringinitiallyinunusablestateCause:AnindexisinIUstatepriortothebeginningofadirect*pathload,itcannotbemaintainedbytheloader.Action:Eit...

ORA-29510: name, string.string, already used by an existing object

文档解释ORA-29510:name,string.string,alreadyusedbyanexistingobjectCause:ACREATEJAVAcommandattemptedtocreateasource,class,orresourceobjectwithanamethatisalreadyinuse...
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