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SpringBoot工程启动报错No bean named ‘org.springframework.context.xxxxx.importRegistry‘ available

(1)问题描述SpringBoot工程,添加validator依赖做参数校验的时候,引入依赖,启动工程时候报错,错误信息如下所示:"C:\Program Files\Java\jdk1.8.0_211\bin\java.exe" -agentlib:jdwp=transport=dt_socket,address=127.0.0.1:11637,suspend=y,server=n -XX:Tie

#spring boot
SpringBoot工程启动报错No bean named ‘org.springframework.context.xxxxx.importRegistry‘ available

(1)问题描述SpringBoot工程,添加validator依赖做参数校验的时候,引入依赖,启动工程时候报错,错误信息如下所示:"C:\Program Files\Java\jdk1.8.0_211\bin\java.exe" -agentlib:jdwp=transport=dt_socket,address=127.0.0.1:11637,suspend=y,server=n -XX:Tie

#spring boot
使用jsoup爬取网页数据,报错:org.jsoup.UnsupportedMimeTypeException:

使用jsoup爬取网页数据时候,出现如下错误:org.jsoup.UnsupportedMimeTypeException: Unhandled content type. Must be text/*, application/xml, or application/xhtml+xml. Mimetype=application/json; charset=utf-8意思大致是:不支持的内容类型

使用FileZilla传输consul文件到Centos虚拟机上面,报错: open for write: permission denied

(1)问题描述使用FileZilla传输consul文件到Centos虚拟机上面,报错: open for write: permission deniedopen for write: permission denied 权限拒绝,意思就是没有操作权限呗错误如下:(2)解决方案解决方案:连接Centos虚拟机时候,使用root账户连接。如下:...

(四)Jenkins部署项目报错ERROR: Step ‘Deploy war/ear to a container’ aborted due to exception:

Jenkins部署SpringBoot项目报错:ERROR: Step ‘Deploy war/ear to a container’ aborted due to exception:ERROR: Step ‘Deploy war/ear to a container’ aborted due to exception:java.lang.InterruptedException: [Deplo

(一)Jenkins部署项目到Gitee报错ERROR: Couldn‘t find any revision to build. Verify the repository and branch

在使用Jenkins部署SpringBoot项目时,报错:ERROR: Couldn't find any revision to build. Verify the repository and branch configuration for this job.[DeployPublisher][INFO] Build failed, project not deployedFinished:

Spring Boot启动报错,log4j2日志依赖冲突,报错提示:log4j-slf4j-impl cannot be present with log4j-to-slf4j

(1)问题描述在Spring Boot基础之上,集成Spring Security框架的时候,启动项目报错:Caused by: org.apache.logging.log4j.LoggingException: log4j-slf4j-impl cannot be present with log4j-to-slf4j报错内容如下:SLF4J: Class path contains mult

count()和distinct关键字的使用

distinct关键字distinct关键字是用于去除重复的数据记录。distinct使用情况:(1)select distinct * 情况当distinct和*号结合使用时候,只有当所有字段都一模一样时候,才会去除重复记录,只保留一条。(2)select distinct 列名1,列名2,...,列名n 情况当指定列名后,只有指定的列名字段全部值全部相同时候,才会去除重复的记录,只保留一条。注

#sql
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