intellij 从2020升级到2023 踩坑实录
1.下载新版本intellij
工作机器上的intellij版本为2020社区版，版本比较老旧，需要进行升级。IDE这种提高生产力的工具，还是蛮重要的，也是值得稍微多花点时间研究一下的。升级之前就预计到了不会是那么简单，后面事实也证明确实很麻烦，特意记录升级过程，为后来人指明方向。
首先下载新版本，这个没什么好说的，直接去jetbrain官网，根据自己的操作系统下载对应的intellij版本，我的机器是ubuntu，下载对应的linux .tar.gz然后解压就好。
2.启动intellij报错，查找对应日志文件
解压以后，会得到一个ideaIC-2023.1文件夹，文件夹里面是idea-IC-231.8109.175，进去可以看到结构
tree -L 1 idea-IC-231.8109.175
cd到bin里面，里面有idea.sh文件。最理想的情况，就是执行idea.sh文件，然后IDE正常启动。当然理想情况是不可能发生的，一般都会各种意外。
执行idea.sh的时候就报错，无法正常启动，需要去查log。2023版各文件的位置为
配置（idea.config.path）~/.config/JetBrains/IdeaIC2023.1
插件（idea.plugins.path）~/.local/share/JetBrains/IdeaIC2023.1
系统（idea.system.path）~/.cache/JetBrains/IdeaIC2023.1
日志（idea.log.path）~/.cache/JetBrains/IdeaIC2023.1/log
IDE启动的日志就在~/.cache/JetBrains/IdeaIC2023.1/log中
tree -L 1 log
启动日志就在idea.log里面。
3.排查log
在idea.log中，开始排查错误信息。
2023-04-20 14:16:24,412 [ 78] SEVERE - #c.i.i.p.PluginManager - `include` is supported only on a root level ([row,col,system-id]: [718,5,"/home/xxx/.local/share/JetBrains/IdeaIC2023.1/odps-studio-intellij/lib/odps-studio-intellij-3.6.2.jar"])
java.lang.Throwable: `include` is supported only on a root level ([row,col,system-id]: [718,5,"/home/xxx/.local/share/JetBrains/IdeaIC2023.1/odps-studio-intellij/lib/odps-studio-intellij-3.6.2.jar"])
at com.intellij.openapi.diagnostic.Logger.error(Logger.java:202)
at com.intellij.ide.plugins.XmlReader.checkXInclude(XmlReader.kt:499)
at com.intellij.ide.plugins.XmlReader.access$checkXInclude(XmlReader.kt:1)
at com.intellij.ide.plugins.XmlReader.readExtensions(XmlReader.kt:408)
at com.intellij.ide.plugins.XmlReader.readRootElementChild(XmlReader.kt:264)
...
最开始看到有抛上述异常，开始去找相关错误信息。找了半天，没发现有啥好办法。后来证明，这个东西暂时不影响正常使用…
继续查看日志，发现如下一段错误日志。
2023-04-20 14:16:26,014 [ 1680] INFO - STDERR - Start Failed
2023-04-20 14:16:26,014 [ 1680] INFO - STDERR - Internal error. Please refer to https://jb.gg/ide/critical-startup-errors
2023-04-20 14:16:26,015 [ 1681] INFO - STDERR -
2023-04-20 14:16:26,015 [ 1681] INFO - STDERR - com.intellij.diagnostic.PluginException: Fatal error initializing 'com.aliyun.odps.studio.intellij.StudioMain' [Plugin: OdpsStudio]
2023-04-20 14:16:26,015 [ 1681] INFO - STDERR - at com.intellij.serviceContainer.ComponentManagerImpl.handleInitComponentError$intellij_platform_serviceContainer(ComponentManagerImpl.kt:612)
2023-04-20 14:16:26,015 [ 1681] INFO - STDERR - at com.intellij.serviceContainer.MyComponentAdapter.doCreateInstance(MyComponentAdapter.kt:59)
2023-04-20 14:16:26,015 [ 1681] INFO - STDERR - at com.intellij.serviceContainer.BaseComponentAdapter.doCreateInstance(BaseComponentAdapter.kt:154)
2023-04-20 14:16:26,016 [ 1682] INFO - STDERR - at com.intellij.serviceContainer.BaseComponentAdapter.createInstance$lambda$1(BaseComponentAdapter.kt:133)
2023-04-20 14:16:26,016 [ 1682] INFO - STDERR - at com.intellij.openapi.progress.Cancellation.computeInNonCancelableSection(Cancellation.java:99)
2023-04-20 14:16:26,016 [ 1682] INFO - STDERR - at com.intellij.serviceContainer.BaseComponentAdapter.createInstance(BaseComponentAdapter.kt:132)
2023-04-20 14:16:26,016 [ 1682] INFO - STDERR - at com.intellij.serviceContainer.BaseComponentAdapter.getInstance(BaseComponentAdapter.kt:92)
2023-04-20 14:16:26,016 [ 1682] INFO - STDERR - at com.intellij.serviceContainer.BaseComponentAdapter.getInstance$default(BaseComponentAdapter.kt:77)
2023-04-20 14:16:26,017 [ 1683] INFO - STDERR - at com.intellij.serviceContainer.ComponentManagerImpl$createInitOldComponentsTask$1.invoke(ComponentManagerImpl.kt:428)
2023-04-20 14:16:26,017 [ 1683] INFO - STDERR - at com.intellij.serviceContainer.ComponentManagerImpl$createInitOldComponentsTask$1.invoke(ComponentManagerImpl.kt:426)
2023-04-20 14:16:26,017 [ 1683] INFO - STDERR - at com.intellij.idea.ApplicationLoader$initApplicationImpl$appInitializedListeners$1$1$2$1.invokeSuspend(ApplicationLoader.kt:161)
2023-04-20 14:16:26,017 [ 1683] INFO - STDERR - at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
2023-04-20 14:16:26,017 [ 1683] INFO - STDERR - at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)
2023-04-20 14:16:26,017 [ 1683] INFO - STDERR - at java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:318)
2023-04-20 14:16:26,018 [ 1684] INFO - STDERR - at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:788)
2023-04-20 14:16:26,018 [ 1684] INFO - STDERR - at java.desktop/java.awt.EventQueue$3.run(EventQueue.java:739)
2023-04-20 14:16:26,018 [ 1684] INFO - STDERR - at java.desktop/java.awt.EventQueue$3.run(EventQueue.java:731)
2023-04-20 14:16:26,018 [ 1684] INFO - STDERR - at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
2023-04-20 14:16:26,018 [ 1684] INFO - STDERR - at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
2023-04-20 14:16:26,018 [ 1684] INFO - STDERR - at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:758)
2023-04-20 14:16:26,019 [ 1685] INFO - STDERR - at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.kt:302)
2023-04-20 14:16:26,019 [ 1685] INFO - STDERR - at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:207)
2023-04-20 14:16:26,019 [ 1685] INFO - STDERR - at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128)
2023-04-20 14:16:26,019 [ 1685] INFO - STDERR - at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:117)
2023-04-20 14:16:26,019 [ 1685] INFO - STDERR - at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113)
2023-04-20 14:16:26,019 [ 1685] INFO - STDERR - at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105)
2023-04-20 14:16:26,020 [ 1686] INFO - STDERR - at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:92)
2023-04-20 14:16:26,020 [ 1686] INFO - STDERR - Caused by: java.lang.NullPointerException: Cannot invoke "org.apache.log4j.Category.getAllAppenders()" because the return value of "org.apache.log4j.Logger.getParent()" is null
2023-04-20 14:16:26,020 [ 1686] INFO - STDERR - at com.aliyun.odps.studio.intellij.ide.IntellijLogger.getInstance(IntellijLogger.java:48)
2023-04-20 14:16:26,020 [ 1686] INFO - STDERR - at com.aliyun.odps.studio.intellij.ide.IntellijLogger.info(IntellijLogger.java:21)
2023-04-20 14:16:26,020 [ 1686] INFO - STDERR - at com.aliyun.odps.studio.component.util.DerbyDBUtil.initOptionPath(DerbyDBUtil.java:23)
2023-04-20 14:16:26,020 [ 1686] INFO - STDERR - at com.aliyun.odps.studio.intellij.StudioMain.initComponent(StudioMain.java:94)
2023-04-20 14:16:26,020 [ 1686] INFO - STDERR - at com.intellij.serviceContainer.MyComponentAdapter.doCreateInstance(MyComponentAdapter.kt:45)
2023-04-20 14:16:26,021 [ 1687] INFO - STDERR - ... 25 more
2023-04-20 14:16:26,021 [ 1687] INFO - STDERR -
2023-04-20 14:16:26,021 [ 1687] INFO - STDERR - -----
2023-04-20 14:16:26,021 [ 1687] INFO - STDERR - Your JRE: 17.0.6+10-b829.5 amd64 (JetBrains s.r.o.)
2023-04-20 14:16:26,021 [ 1687] INFO - STDERR - /home/xxx/ideaIC-2023.1/idea-IC-231.8109.175/jbr
Internal error. Please refer to https://jb.gg/ide/critical-startup-errors
这一句很关键，根据这一句搜到这个老哥的总结。
https://intellij-support.jetbrains.com/hc/en-us/articles/360007568559?page=8
里面有这么一段
There are multiple possible causes for this issue: broken or incompatible plug-in, corrupted IDE installation files, failed patch update, broken caches or damaged configuration.
It may be hard to guess the root case from the exception stacktrace.
再结合下面的错误信息，基本就是broken or incompatible plug-in的原因了。
看idea-IC-231.8109.175文件夹里有一个plugins, 最开始以为是在这个文件夹下面的。但是查了好久，也木有发现OdpsStudio相关的插件呀，相当郁闷，也不知道为什么intellij启动跟aliyun有什么关系。
后来想起来，还有一个插件相关的目录
~/.local/share/JetBrains/IdeaIC2023.1
cd到这个目录，果然发现有个跟OdpsStudio相关的目录，不管三七二十一，直接删掉。
再执行idea.sh文件，世界和平，正常启动。
4.创建快捷方式
每次通过执行idea.sh的方式启动肯定不方便，需要创建快捷方式快速启动。
网上的教程都是告诉你创建idea.desktop(应该是老版本)文件去实现。但是新版本的intellij提供了更好的方法：
Tools菜单下面有个create desktop entry选项。点击这个选项，可以在/usr/share/applications中直接生成jetbrains-idea-ce.desktop文件。
但是重点来了，发现每次点快捷方式，启动的还是原来2020老版本的IDE!!!
试了好几次，重启大法也用上了，还是一样。
突然灵光一现想起一个问题，是不是原来就有这个文件，虽然在新版本IDE 里执行了create desktop entry选项，文件没有更新啊
于是把原有的文件删掉，重新再点击create desktop entry选项，然后发现应用程序里的快捷方式图标，更新了。这个时候再启动，也是2023新版的IDE，完美解决。