<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[HelloJavaE2的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/HelloJavaE2</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; HelloJavaE2]]></copyright><item><title><![CDATA[线程池启动报null ：Caused by: java.lang.IllegalArgumentException: null]]></title><link>https://blog.youkuaiyun.com/HelloJavaE2/article/details/148608534</link><guid>https://blog.youkuaiyun.com/HelloJavaE2/article/details/148608534</guid><author>HelloJavaE2</author><pubDate>Thu, 12 Jun 2025 13:48:03 +0800</pubDate><description><![CDATA[线程池核心线程数<= 最大线程数，否则报Caused by: java.lang.IllegalArgumentException: null]]></description><category></category></item><item><title><![CDATA[springboot集成dubbo:No such extension org.apache.dubbo.rpc.Protocol by name dubbo]]></title><link>https://blog.youkuaiyun.com/HelloJavaE2/article/details/148454095</link><guid>https://blog.youkuaiyun.com/HelloJavaE2/article/details/148454095</guid><author>HelloJavaE2</author><pubDate>Thu, 05 Jun 2025 16:55:31 +0800</pubDate><description><![CDATA[重点来了, 启动成功后,再去掉这行配置 也能正常启动,不报错了…不知道为啥报错,明明已经指定了,最后加了个配置又好了…]]></description><category></category></item><item><title><![CDATA[idea 反编译修改 Squaretest 插件 的天数]]></title><link>https://blog.youkuaiyun.com/HelloJavaE2/article/details/144829834</link><guid>https://blog.youkuaiyun.com/HelloJavaE2/article/details/144829834</guid><author>HelloJavaE2</author><pubDate>Tue, 31 Dec 2024 09:31:17 +0800</pubDate><description><![CDATA[反编译破解squaretest]]></description><category></category></item><item><title><![CDATA[kettle 指定jdk8的路径启动]]></title><link>https://blog.youkuaiyun.com/HelloJavaE2/article/details/144426432</link><guid>https://blog.youkuaiyun.com/HelloJavaE2/article/details/144426432</guid><author>HelloJavaE2</author><pubDate>Thu, 12 Dec 2024 14:47:03 +0800</pubDate><description><![CDATA[kettle 指定jdk路径启动]]></description><category></category></item><item><title><![CDATA[kettle删除子服务器报错:This slave server is still in use by one or more transformations (0)or cluster schema]]></title><link>https://blog.youkuaiyun.com/HelloJavaE2/article/details/144420689</link><guid>https://blog.youkuaiyun.com/HelloJavaE2/article/details/144420689</guid><author>HelloJavaE2</author><pubDate>Thu, 12 Dec 2024 14:21:57 +0800</pubDate><description><![CDATA[迁移kettle后，需要把之前配置的服务器信息删除，页面删除时报错This slave server is still in use by one or more transformations (0) or cluster schemas (3) ，如图。执行这俩sql，发现第二个sql 查的R_CLUSTER_SLAVE表里有数据，不知道为什么没有删掉。因为我这是新环境，这个表不应该有数据，我这里直接清空表，然后页面执行删除操作，成功！]]></description><category></category></item><item><title><![CDATA[kettle 报错Caused by: java.lang.IllegalArgumentException: argument type mismatch]]></title><link>https://blog.youkuaiyun.com/HelloJavaE2/article/details/143435618</link><guid>https://blog.youkuaiyun.com/HelloJavaE2/article/details/143435618</guid><author>HelloJavaE2</author><pubDate>Fri, 01 Nov 2024 17:04:14 +0800</pubDate><description><![CDATA[我遇到的问题比较奇葩，是用 “根据Java代码过滤记录”组件时报的错，在idea中正常的代码挪到kettle 就报错了，可能超出了kettle 的设置，我最后把一个大字符串拆成了多个小字符串，挨个判断，成功执行！这个一般是语法问题，例如中文逗号或者分号， 结尾没加分号等。原因是： 字符串太长了。]]></description><category></category></item><item><title><![CDATA[通俗理解 mysql 的mvcc机制]]></title><link>https://blog.youkuaiyun.com/HelloJavaE2/article/details/126575687</link><guid>https://blog.youkuaiyun.com/HelloJavaE2/article/details/126575687</guid><author>HelloJavaE2</author><pubDate>Sun, 28 Aug 2022 22:49:11 +0800</pubDate><description><![CDATA[通俗理解 mysql 的mvcc机制]]></description><category></category></item><item><title><![CDATA[mybatis plus 报错 Invalid bound statement (not found): com.xxxx.方法名]]></title><link>https://blog.youkuaiyun.com/HelloJavaE2/article/details/123905569</link><guid>https://blog.youkuaiyun.com/HelloJavaE2/article/details/123905569</guid><author>HelloJavaE2</author><pubDate>Fri, 01 Apr 2022 19:37:01 +0800</pubDate><description><![CDATA[项目启动正常， 调用接口就报错： Invalid bound statement (not found): com.xxxx.方法名

网上基本上是说，mapper 接口跟 mapper.xml 映射出了问题，比如方法名拼写错误等，可我这个是service层接口，没有mapper那一层，根本不会用到mybatis plus
也有资料说是  springboot启动类 @MapperScan 跟mybatis 配置类注解冲突，让注掉 配置类中的@MapperScan，但我这个不管用

查看资料  @Mappe]]></description><category></category></item><item><title><![CDATA[Oracle报错ORA-00904: 标识符无效]]></title><link>https://blog.youkuaiyun.com/HelloJavaE2/article/details/122637801</link><guid>https://blog.youkuaiyun.com/HelloJavaE2/article/details/122637801</guid><author>HelloJavaE2</author><pubDate>Sat, 22 Jan 2022 15:05:04 +0800</pubDate><description><![CDATA[执行sql时，oracle 报错ORA-00904: 标识符无效，原因：

列名写错，表中没有那个字段；
查询语句需要加上租户名
比如：表A是  common 租户下的，用工具直接执行
select * from A where id = ‘xxx’   有时也会报ORA-00904 这个错，
改成 select * from common.A  where id = ‘xxx’ 就可以了


...]]></description><category></category></item><item><title><![CDATA[无效的列索引]]></title><link>https://blog.youkuaiyun.com/HelloJavaE2/article/details/120033023</link><guid>https://blog.youkuaiyun.com/HelloJavaE2/article/details/120033023</guid><author>HelloJavaE2</author><pubDate>Wed, 01 Sep 2021 09:48:20 +0800</pubDate><description><![CDATA[无效的列索引
最近在使用了jdbcTemplate 执行sql时，报错  “无效的列索引”
目前总结两个原因：
1.  sql语句 参数 与 后面的?  个数不一致；
2.  就是你设置参数值的地方，我用的是map，里面的参数个数跟sql里的不一致

...]]></description><category></category></item><item><title><![CDATA[Initialization failed for ‘https://start.spring.io’]]></title><link>https://blog.youkuaiyun.com/HelloJavaE2/article/details/115463524</link><guid>https://blog.youkuaiyun.com/HelloJavaE2/article/details/115463524</guid><author>HelloJavaE2</author><pubDate>Tue, 06 Apr 2021 16:20:34 +0800</pubDate><description><![CDATA[Initialization failed for ‘https://start.spring.io’

最近用idea 新建模块时，提示Initialization failed for ‘https://start.spring.io’这个错误，原因是maven的setting文件配置问题。
因为是新配的maven，setting文件配置引入的阿里云地址不对，错误的不贴了，直接上正确的
&lt;mirror&gt;
         &lt;id&gt;nexus-aliyun&lt;/id&gt;..]]></description><category></category></item><item><title><![CDATA[git更新pull报错Pulling 1 repository Remote does not have refs/heads/rel5.1 available for fetch]]></title><link>https://blog.youkuaiyun.com/HelloJavaE2/article/details/114002201</link><guid>https://blog.youkuaiyun.com/HelloJavaE2/article/details/114002201</guid><author>HelloJavaE2</author><pubDate>Tue, 23 Feb 2021 20:19:58 +0800</pubDate><description><![CDATA[转载自 链接：https://blog.youkuaiyun.com/zyp630998758/article/details/106717926

        
        
                
                    更新分支的时候，报如下图错误： 
 
原因：分支被删除，拉取失败（注意：以后用哪个分支就clone哪个分支，不要把所有的分支都clone） 
解决办法：如下图：选中应用工程右键-Team-Remote-Fetch From...-Finish-configure-]]></description><category></category></item><item><title><![CDATA[Could not connect to Redis at X.X.X.X:6379: Connection refused]]></title><link>https://blog.youkuaiyun.com/HelloJavaE2/article/details/111130389</link><guid>https://blog.youkuaiyun.com/HelloJavaE2/article/details/111130389</guid><author>HelloJavaE2</author><pubDate>Sun, 13 Dec 2020 17:09:34 +0800</pubDate><description><![CDATA[Could not connect to Redis at X.X.X.X:6379: Connection refused
在搭建redis 主从（一主两从）模式时，修改了redis的端口，但是使用客户端命令时，还是去找6379端口，很郁闷

因为我的虚拟机已经搭建过redis集群，6379端口已经被占用，所以这次搭建主从的时候，用两台虚拟机模拟，把master设置为为6201（192.168.78.2 ） 端口，slave为6202（192.168.78.2 ）端口 和6203（ 192.168.78.]]></description><category></category></item><item><title><![CDATA[idea  无法搜索插件]]></title><link>https://blog.youkuaiyun.com/HelloJavaE2/article/details/109068357</link><guid>https://blog.youkuaiyun.com/HelloJavaE2/article/details/109068357</guid><author>HelloJavaE2</author><pubDate>Wed, 14 Oct 2020 15:32:12 +0800</pubDate><description><![CDATA[idea 版本 2020.1

]]></description><category></category></item><item><title><![CDATA[mybatis  删除时sql执行成功，数据却没有删除，update:0]]></title><link>https://blog.youkuaiyun.com/HelloJavaE2/article/details/108363967</link><guid>https://blog.youkuaiyun.com/HelloJavaE2/article/details/108363967</guid><author>HelloJavaE2</author><pubDate>Wed, 02 Sep 2020 16:07:50 +0800</pubDate><description><![CDATA[使用mybatis删除时，sql成功执行，没有事务，无异常，数据却没有删除
先看下日志
2020-09-02 15:55:04.687 DEBUG[http-nio-8081-exec-5]f.w.i.d.Y.deleteById.debug():143 -==&gt;  Preparing: delete from task where id = ? 
2020-09-02 15:55:04.687 DEBUG[http-nio-8081-exec-5]f.w.i.d.Y.deleteById.debug]]></description><category></category></item><item><title><![CDATA[eclipse创建maven报Could not resolve archetype org.apache.maven.archetypes:maven-archetype-quickstart]]></title><link>https://blog.youkuaiyun.com/HelloJavaE2/article/details/107222974</link><guid>https://blog.youkuaiyun.com/HelloJavaE2/article/details/107222974</guid><author>HelloJavaE2</author><pubDate>Thu, 09 Jul 2020 10:43:09 +0800</pubDate><description><![CDATA[eclipse  创建maven项目报错
java
Could not resolve archetype org.apache.maven.archetypes:maven-archetype-quickstart:1.1 from any of the configured repositories.
Could not resolve artifact org.apache.maven.archetypes:maven-archetype-quickstart:pom:1.1
Missing org.]]></description><category></category></item><item><title><![CDATA[springboot2.0 访问druid监控页面404]]></title><link>https://blog.youkuaiyun.com/HelloJavaE2/article/details/106933332</link><guid>https://blog.youkuaiyun.com/HelloJavaE2/article/details/106933332</guid><author>HelloJavaE2</author><pubDate>Tue, 23 Jun 2020 22:42:57 +0800</pubDate><description><![CDATA[看了下网上资料，引入依赖
部分 pom.xml
&lt;parent&gt;
        &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
        &lt;artifactId&gt;spring-boot-starter-parent&lt;/artifactId&gt;
        &lt;version&gt;2.1.5.RELEASE&lt;/version&gt;
  &lt;/parent&gt;
   &lt;dep]]></description><category></category></item><item><title><![CDATA[启动springcloud报错Failed to start component ，原因是  tomcat与servlet api 版本冲突]]></title><link>https://blog.youkuaiyun.com/HelloJavaE2/article/details/103809182</link><guid>https://blog.youkuaiyun.com/HelloJavaE2/article/details/103809182</guid><author>HelloJavaE2</author><pubDate>Thu, 02 Jan 2020 18:53:45 +0800</pubDate><description><![CDATA[刚接触springcloud项目，启动就遇到一个坑，报错信息就是tomcat启动失败。。。。
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [NonLoginAuthenticator[StandardEngine[Tomcat]....]]></description><category></category></item><item><title><![CDATA[jqGrid  少一条数据 解决办法]]></title><link>https://blog.youkuaiyun.com/HelloJavaE2/article/details/101052429</link><guid>https://blog.youkuaiyun.com/HelloJavaE2/article/details/101052429</guid><author>HelloJavaE2</author><pubDate>Fri, 20 Sep 2019 10:22:38 +0800</pubDate><description><![CDATA[用jqgrid 加载数据，有时候会发现少最后那一条数据，比对全部的数据，发现加载全部的数据时，会在最后加一个空值，仿照这个做法果然可以把最后那条数据显示出来了，实际上是把隐藏的那条数据改成了加的那条空数据了，但效果达到就行了。
具体代码:
var data = [];//要加载的数据集合
var extendParam = {
	"param" : ''	
}
data.push(extendPa...]]></description><category></category></item><item><title><![CDATA[maven 引入自定义jar包，并外置配置文件]]></title><link>https://blog.youkuaiyun.com/HelloJavaE2/article/details/90724241</link><guid>https://blog.youkuaiyun.com/HelloJavaE2/article/details/90724241</guid><author>HelloJavaE2</author><pubDate>Fri, 31 May 2019 22:56:22 +0800</pubDate><description><![CDATA[maven项目写一个小工具，需要导入自己的jar包，并要能随时修改配置文件的内容
1，首先是导入自己的jar包
借鉴 https://www.cnblogs.com/Spirit612/p/8079468.html  博主的文章,在此记录一下
使用maven命令
mvn install:install-file  
-Dfile=jar文件所在路径（这里使用绝对路径） 
-DgroupId=包名
...]]></description><category></category></item></channel></rss>