#orm

PCLZIP_ERR_BAD_FORMAT (-10) : Unable to find End of Central Dir Record signature

这个错误是由于你的压缩包损坏无法解压或安装包不是.zip后缀。他的压缩包是.tar.gz后缀,重新打包上传以后安装成功了 ...

从客户端中检测到有潜在危险的Request.Form值的解决办法

如果你网站iis服务器asp.net采用了4.0的版本,则默认会阻止客户端的html内容提交,提交后则会出现:从客户端(....)中检测到有潜在危险的Request.Form值...的错误提示。解决办法:用计事本打开web.config文件,找到下面这句<httpRuntimemaxRequestLength=&...

MySQL中的DATE_FORMAT()的用法

在处理数据的时候,经常会在MySQL里面格式化时间进行统计。DATE_FORMAT()函数用于以不同的格式显示日期/时间数据。本篇介绍一下MySQL中DATE_FORMAT()函数的用法。/DATE_FORMAT()函数用于以不同的格式显示日期/时间数据。/DATE_FORMAT(date,format)date&nb...

Web Performance Optimization

WebPerformanceOptimization 技术不断演进,包括: - LazyLoading:延迟加载非必要的资源,提升页面加载速度。- CodeSplitting:将代码拆分成更小的部分,按需加载。- HTTP/3:新一代HTTP协议,提升了网络传输性能和安...
开发笔记 ·2024-08-31

java decimalformat

DecimalFormat是Java中一个用于格式化数字的类。它可以将数字按照指定的模式进行格式化,并可以进行数字的格式化输出。DecimalFormat类可以通过设置模式字符串来指定数字的格式。模式字符串由一系列特殊字符和格式化符号组成,用于定义数字的显示方式。例如,可以使用"#,##0.00"来...
开发笔记 ·2024-08-30

c# winform 开启双缓冲,解决dataguidview卡顿

窗体的构造函数中,开启窗体的双缓冲publicssss(){//设置窗体的双缓冲this.SetStyle(ControlStyles.OptimizedDoubleBuffer|ControlStyles.ResizeRedraw|ControlStyles.AllPaintingInWmPaint,true);th...

ORA-32150: Cannot perform operation on a null timestamp

文档解释ORA-32150:CannotperformoperationonanulltimestampCause:Thetimestampinvolvedinthisoperationisnull.Action:Usevalid,non-nulltimestampinstancetoperformthisoperat...

ORA-30695: JDWP message format problem

文档解释ORA-30695:JDWPmessageformatproblemCause:AmessagepassedfromonesoftwaresubcomponenttoanotherusingtheJDWPprotocolappearsinvalidlyformatted.Action:Thisisaninter...

ORA-32156: Cannot perform operation on stream

文档解释ORA-32156:CannotperformoperationonstreamCause:ThisoperationisnotapplicabletostreamsobtainedfromLOBs.Action:NoneORA-32156:不能对流表执行操作官方解释ORA-32156:当向流表执行操作时,可能...

ORA-28385: cannot perform a PKI certificate-based migration

文档解释ORA-28385:cannotperformaPKIcertificate-basedmigrationCause:APKIcertificate-basedmigrationtoHSMwasattempted.Action:PerformasymmetricMasterKeymigration.ORA-28...

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

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

ORA-55461: no distance information available

文档解释ORA-55461:nodistanceinformationavailableCause:Distanceinformationwasnotgeneratedduringrulesindexcreation.Action:RetryquerywithouttheSEM_DISTANCEoperatorand/...

ORA-47920: Authorization failed for user string to perform this operation

文档解释ORA-47920:AuthorizationfailedforuserstringtoperformthisoperationCause:TheoperationattemptedisnotallowedforthisuserAction:Pleaseensureyouhaveprivilegestoperf...

ORA-38950: Source platform string not cross platform compliant

文档解释ORA-38950:SourceplatformstringnotcrossplatformcompliantCause:Crossplatformtransportwasnotallowedforthisplatform.Action:Foralistofsupportedplatforms,queryfix...

ORA-44827: Number of Performance Classes is too large

文档解释ORA-44827:NumberofPerformanceClassesistoolargeCause:Alargenumber(>=50)ofPerformanceClasseswererequested.Action:Submitasmaller(ORA-44827:表示性能类的数量太多。官方解释OR...
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