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python paramiko.SFTPClient 常用操作

连接https://docs.paramiko.org/en/stable/api/sftp.htmltransport=paramiko.Transport(('192.168.110.51',22))try:#transport.connect(username='root',password='123456')f...

开发笔记 ·2024-07-09

iframe获取浏览器麦克风、摄像头等权限

iframe获取浏览器麦克风、摄像头等权限，需要增加配置：allow="geolocation;microphone;camera;midi;encrypted-media;" ...

开发笔记 ·2024-03-08

vue中params与query的区别是什么

类似于post请求，传递的数据不会在浏览器地址显示params路由传参分为三步：（1）绑定参数{path:'/mypath/:web?',name:'mypath',component:()=>import('../views/mypath'),meta:{title:"dvy.com.cn"}}//web后的?...

开发笔记 ·2024-02-21

Python中的Lambda函数和高阶函数

**引言：**Python作为一门十分流行的编程语言，拥有丰富的函数式编程特性。其中，**Lambda函数**和**高阶函数**是函数式编程中的两个重要概念，对于提升代码的简洁性和可读性有着重要作用。**摘要：**本文将从Lambda函数和高阶函数的基本概念入手，深入探讨它们在Python中的应用场景和具体用法。通过对...

开发笔记 ·2024-01-08

Oracle数据库：ORA-01017: invalid username/password; logon denied

报错：ORA-01017:invalidusername/password;logondenied错误说明：用户名和密码无效，登录被拒绝。1<connectionStrings>2 3 <addname="CamnprData...

开发笔记 ·2023-12-02

ORA-55366: unknown namespace prefix “string”

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

IT技术学习 ·2023-07-28

ORA-31037: Invalid XML attribute name string

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

IT技术学习 ·2023-07-28

ORA-44815: User name is too large

文档解释ORA-44815:UsernameistoolargeCause:Theusernamementionedintheparameterlistwastoolarge.Action:Checktheusername.ORA-44815用户名太长。官方解释常见案例一般处理方法及步骤1.确定相关用户，并尝试检查其用...

IT技术学习 ·2023-07-28

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

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

IT技术学习 ·2023-07-28

ORA-30968: invalid XPATH or NAMESPACE option for XML Index

文档解释ORA-30968:invalidXPATHorNAMESPACEoptionforXMLIndexCause:Anattemptwasmadetouseanunsupportedoption.Action:Usetheappropriateoption.ORA-30968异常消息表明，您尝试创建的XML索引的...

IT技术学习 ·2023-07-28

ORA-44303: service name exists

文档解释ORA-44303:servicenameexistsCause:Thisservicenamewasalreadyinexistence.Action:Provideanewuniqueservicename.ORA-44303错误消息是Oracle数据库定义的一个错误消息，表示提供的服务名称已存在（空间不允...

IT技术学习 ·2023-07-28

ORA-32150: Cannot perform operation on a null timestamp

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

IT技术学习 ·2023-07-28

ORA-31185: DOM Nodes do not belong to the same DOM Document

文档解释ORA-31185:DOMNodesdonotbelongtothesameDOMDocumentCause:ThespecifiedPL/SQLDOMNodedoesnotbelongtotheparentDOMDocumentofthereferringDOMNode.Action:Ensurethatbo...

IT技术学习 ·2023-07-28

ORA-30364: this level has the same set of columns as another

文档解释ORA-30364:thislevelhasthesamesetofcolumnsasanotherCause:Theleveldefinitioncontainedthesamesetofcolumnsasanotherlevel.Action:Eliminatetheredundantleveldefini...

IT技术学习 ·2023-07-28

ORA-53048: definer name DICOM is not allowed in a private dictionary

文档解释ORA-53048:definernameDICOMisnotallowedinaprivatedictionaryCause:TheoperationfailedbecausethedefinernameDICOMwasfoundintheprivatedictionary.Action:Correctthe...

IT技术学习 ·2023-07-28