Java
JAVA上传大文件的三种解决方案
我们平时经常做的是上传文件，上传文件夹与上传文件类似，但也有一些不同之处，这次做了上传文件夹就记录下以备后用。首先我们需要了解的是上传文件三要素：1.表单提交方式:post(get方式提交有大小限制,post没有)2.表单的enctype属性:必须设置为multipart/form-data.3.表单必须有文件上传项:...
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...
Java分隔符读取文件
importjava.io.BufferedReader;importjava.io.FileReader;importjava.io.IOException;publicclassReadFileWithDelimiter{publicstaticvoidmain(String[]args){StringfilePa...
ORA-29550: Java session state cleared
文档解释ORA-29550:JavasessionstateclearedCause:TheJavastateinthecurrentsessionbecameinconsistentandwascleared.Action:Noactionrequired.ORA-29550：Java会话状态已清除官方解释提示你在关...
ORA-29511: could not resolve Java class
文档解释ORA-29511:couldnotresolveJavaclassCause:ACREATEANDRESOLVENOFORCEJAVACLASScommandspecifieddefinitiondatathatcouldnotberesolved,orresolutionfailedforsomerefer...
ORA-29543: Java command string not yet implemented
文档解释ORA-29543:JavacommandstringnotyetimplementedCause:AnattemptwasmadetouseaJavacommandthatisnotyetimplemented.Action:Donotusethecommand.ORA-29543是Oracle数据库中的错误...
ORA-29538: Java not installed
文档解释ORA-29538:JavanotinstalledCause:AnattemptwasmadetouseaJavacommandwhenJavaisnotinstalled.Action:InstallJava,ordonotusethecommand.ORA-29538：Java没有安装官方解释ORA-29...
ORA-24197: JAVA stored procedure throws JAVA exceptions
文档解释ORA-24197:JAVAstoredprocedurethrowsJAVAexceptionsCause:TheJAVAstoredprocedurethrewsomeexceptionsthatcouldnotbecatergorized.Action:UseGET_EXCEPTIONproceduret...
ORA-29549: class string.string has changed, Java session state cleared
文档解释ORA-29549:classstring.stringhaschanged,JavasessionstateclearedCause:Aclassinusebythecurrentsessionwasredefinedordropped,invalidatingthecurrentJavasessionsta...
ORA-29555: Java source, class or resource is not allowed here
文档解释ORA-29555:Javasource,classorresourceisnotallowedhereCause:AJavasource,class,orresourcewasspecifiedinaninappropriateplaceinastatement.Action:Makesurethenamei...
ORA-29547: Java system class not available: string
文档解释ORA-29547:Javasystemclassnotavailable:stringCause:AnattemptwasmadetouseacommandthatrequiresaJavasystemclassthatwasnotyetpresentorwasinvalid.Action:Loadthesy...
ORA-29501: invalid or missing Java source, class, or resource name
文档解释ORA-29501:invalidormissingJavasource,class,orresourcenameCause:TherequirednameforaJavasource,class,orresourcewasinvalidormissing.Action:Specifyavalidname.OR...
ORA-29539: Java system classes already installed
文档解释ORA-29539:JavasystemclassesalreadyinstalledCause:AnattemptwasmadetousetheCREATEJAVASYSTEMcommandinadatabasewheretheJavasystemclassesalreadyareinstalled.Acti...
ORA-29500: NAMED keyword is invalid in CREATE JAVA CLASS
文档解释ORA-29500:NAMEDkeywordisinvalidinCREATEJAVACLASSCause:ANAMEDkeywordwasspecifiedintheCREATEJAVACLASSstatement.NAMEDkeywordsarevalidonlyinCREATEJAVASOURCEorRE...
ORA-29554: unhandled Java out of memory condition
文档解释ORA-29554:unhandledJavaoutofmemoryconditionCause:ThesessionencounteredanoutofmemoryconditioninJavafromwhichitcouldnotrecover.Javasessionstatewascleared.Acti...
