编辑器：Idea

About 1182 wordsAbout 4 min

2025-05-13

IDEA（IntelliJ IDEA）是一个功能强大的集成开发环境（IDE），主要用于 Java 开发，也支持多种编程语言。凭借智能代码补全、调试工具、版本控制和插件生态，IDEA 提供高效的开发体验，广受开发者喜爱。

在使用Idea过程中，有一些内容、调整的设置需要掌握，这里做下记录。

一、基础设置

1.1、对新打开的项目配置默认信息

idea窗口最大化？
idea分屏之前跳转，ctrl + l/r

1.2、快捷键

Generate 生成Get，Set方法的（Command + N）
Find in File 在整个项目里面搜索（Ctrl + Shift + F）
Recent File 最近打开的文件（Command + E）
Recent Location 显示最近修改的文件（Command + Shift + E）

高效使用IDEA

自动提示补全（Alt + Enter）
显示文件结构（Leader + S + S）

二、信息了解

2.1、设置idea使用内容，并了解配置项信息

-Xms1024m
-Xmx2048m
-XX:ReservedCodeCacheSize=512m
-XX:+IgnoreUnrecognizedVMOptions
-XX:+UseG1GC
-XX:SoftRefLRUPolicyMSPerMB=50
-XX:CICompilerCount=2
-XX:+HeapDumpOnOutOfMemoryError
-XX:-OmitStackTraceInFastThrow
-ea
-Dsun.io.useCanonCaches=false
-Djdk.http.auth.tunneling.disabledSchemes=""
-Djdk.attach.allowAttachSelf=true
-Djdk.module.illegalAccess.silent=true
-Dkotlinx.coroutines.debug=off
-XX:ErrorFile=$USER_HOME/java_error_in_idea_%p.log
-XX:HeapDumpPath=$USER_HOME/java_error_in_idea.hprof

--add-opens=java.base/jdk.internal.org.objectweb.asm=ALL-UNNAMED
--add-opens=java.base/jdk.internal.org.objectweb.asm.tree=ALL-UNNAMED

-javaagent:/Applications/JetBrains-MacKed/ja-netfilter.jar=jetbrains

上面的信息就是我现在Idea对内存相关的配置，下面仔细了解一下各个配置的含义

2.1.1、内存配置

-Xms1024m
-Xmx2048m
-XX:ReservedCodeCacheSize=512m

Xms 设置JVM初时堆内存大小。
Xmx 设置JVM最大堆内存大小。
XX:ReservedCodeCacheSize 设置JIT编译器代码缓存的大小，用于存储JIT编辑的机器代码。

2.1.2、垃圾回收器和堆内存设置

-XX:+UseG1GC
-XX:SoftRefLRUPolicyMSPerMB=50
-XX:CICompilerCount=2

XX:+UserG1GC 启用G1垃圾回收器，适合大内存环境，尤其是需要低停顿时间的应用
XX:SoftRefLRUPolicyMSPerMB 设置软引用的回收策略，这影响到内存回收的行为
XX:CICompilerCount 设置JIT编译器使用的线程数。

2.1.3、错误处理与堆转储

-XX:+HeapDumpOnOutOfMemoryError
-XX:-OmitStackTraceInFastThrow

XX:HeapDumpOnoutOfMemoryError 当发生OOM时，JVM会生成堆转储（heap dump），有利于后续的分析和调试
-XX:-OmitStackTraceInFastThrow 禁用快速抛出异常时省略堆栈跟踪信息，确保在发生异常时可以查看完整的堆栈信息。

2.1.4、调试和安全设置

-ea
-Dsun.io.useCanonCaches=false
-Djdk.http.auth.tunneling.disabledSchemes=""
-Djdk.attach.allowAttachSelf=true
-Djdk.module.illegalAccess.silent=true
-Dkotlinx.coroutines.debug=off

-ea 启用断言，有助于调试时发现潜在的问题
-Dsun.io.useCanonCaches 禁用文件系统的缓存机制，可以有助于文件路径问题的调试

2.1.5、错误日志与堆转储路径

-XX:ErrorFile=$USER_HOME/java_error_in_idea_%p.log
-XX:HeapDumpPath=$USER_HOME/java_error_in_idea.hprof

-XX:ErrorFile 指定JVM错误日志的输出路径，%p是进程id（PID），用来唯一标识每个错误日志文件
-XX:HeapDumpPath 指定JVM堆转存的存储路径

三、Idea插件管理

3.1、which-key

在那里配置？配置到.ideavimrc里面

" ==============================>, whick key
set which-key
set notimeout

" d: diff
nmap <leader>dd <action>(Vcs.ShowTabbedFileHistory)

" f: Find/Format ⭐️
let g:WhichKeyDesc_FindOrFormat = "<leader>f FindOrFormat"
let g:WhichKeyDesc_FindOrFormat_FindFile = "<leader>ff FindFile"
nmap <leader>ff <action>(GotoFile)

let g:WhichKeyDesc_FindOrFormat_FindFileLocation = "<leader>fl FindFileLocation"
nmap <leader>fl <action>(SelectInProjectView)

let g:WhichKeyDesc_FindOrFormat_FindText = "<leader>ft FindText"
nmap <leader>ft <action>(FindInPath)

let g:WhichKeyDesc_FindOrFormat_Action = "<leader>fa Action"
nmap <leader>fa <action>(GotoAction)

let g:WhichKeyDesc_FindOrFormat_OpenedProject = "<leader>fp OpenedProject"
nmap <leader>fp <action>(OpenProjectWindows)

let g:WhichKeyDesc_FindOrFormat_Format = "<leader>fm Format"
nmap <leader>fm <action>(ReformatCode) \| <action>(OptimizeImports)

let g:WhichKeyDesc_Show_FileStructure = "<leader>fs GotoSymbol"
nmap <leader>fs <action>(GotoSymbol)

" g: Git ⭐️
let g:WhichKeyDesc_Git = "<leader>g Git"
let g:WhichKeyDesc_Git_RollbackHunk = "<leader>gr RollbackHunk"
nmap <leader>gr :action Vcs.RollbackChangedLines<CR>

let g:WhichKeyDesc_Git_ActivateCommitToolWindow = "<leader>gc ActivateCommitToolWindow"
nmap <leader>gc :action Vcs.ActivateCommitToolWindow<CR>


" i: Insert ⭐️
let g:WhichKeyDesc_InsertAfterBrackets = "<leader>i InsertAfterBrackets"
nmap <leader>i f(a

" j: add Semicolon and goto nextline⭐️
" let g:WhichKeyDesc_InsertSemicolon = "<leader>j InsertSemicolon"
" nmap <leader>j A;<ESC>o

" l: lsp: Language server protocol (align with neovim)⭐️
" let g:WhichKeyDesc_LSP = "<leader>l LSP"
" let g:WhichKeyDesc_LSP_Rename = "<leader>lr Rename"
" nmap <leader>lr <action>(RenameElement)


" n: No ⭐️
let g:WhichKeyDesc_No_Highlight = "<leader>nl NoHighlight"
nmap <leader>nl :nohlsearch<CR>


" s: Show ⭐️
let g:WhichKeyDesc_Show = "<leader>s Show"

" let g:WhichKeyDesc_Show_FileStructure = "<leader>ss ShowFileStructure"
nmap <leader>ss <action>(FileStructurePopup)

" let g:WhichKeyDesc_Show_Bookmarks = "<leader>sb ShowBookmarks"
nmap <leader>sb <action>(ShowBookmarks)
" let g:WhichKeyDesc_Show_ParameterInfo = "<leader>sb ShowParameterInfo"
" nmap <leader>sp <action>(ParameterInfo)


" 启动easymotion s2 当输入两个字符的时候触发
nmap ss <Plug>(easymotion-s2)


" r: Run/Re ⭐️
let g:WhichKeyDesc_RunOrRe = "<leader>r RunOrRe"
let g:WhichKeyDesc_RunOrRe_ReRun = "<leader>rr ReRun"
nmap <leader>rr <action>(Rerun)
let g:WhichKeyDesc_RunOrRe_ReRunTests = "<leader>rt ReRunTests"
nmap <leader>rt <action>(RerunTests)
let g:WhichKeyDesc_RunOrRe_Rename = "<leader>rn Rename"
map <leader>rn <action>(RenameElement)

" w: Window ⭐️
let g:WhichKeyDesc_Windows = "<leader>w Windows"


let g:WhichKeyDesc_Windows_maximize = "<leader>wo maximize"
nmap <leader>wo <action>(UnsplitAll) \| <action>(HideAllWindows)

let g:WhichKeyDesc_Windows_splitWindowVertically = "<leader>wl splitWindowVertically"
nmap <leader>wl <action>(SplitVertically)
" nmap <leader>wl <action>(Macro.SplitVertically)


let g:WhichKeyDesc_Windows_closeActiveWindow = "<leader>wc closeActiveWindow"
nmap <leader>wc <c-w>c

" z: zip(fold) ⭐️
let g:WhichKeyDesc_Zip = "<leader>z Zip"
let g:WhichKeyDesc_Zip_unZipAll = "<leader>zo unZipAll"
nmap <leader>zo <action>(ExpandAllRegions)
let g:WhichKeyDesc_Zip_ZipAll = "<leader>zc ZipAll"
nmap <leader>zc <action>(CollapseAllRegions)

" c: Close ⭐️;
let g:WhichKeyDesc_CloseBuffer = "<leader>c CloseBuffer"
nmap <leader>c :q!<CR>

" e: Toggle Explorer ⭐️
let g:WhichKeyDesc_ToggleExplorerOrExtract = "<leader>e ToggleExplorer"
nmap <leader>e <action>(ActivateProjectToolWindow)

" let g:WhichKeyDesc_ActivateDebugToolWindow = "<leader>e ToggleDebug"
" nmap <leader>ed <action>(ActivateDebugToolWindow)


" e: Extract
" extract method/function
vmap <leader>em <action>(ExtractMethod)
" extract constant
vmap <leader>ec <action>(IntroduceConstant)
" extract field
vmap <leader>ef <action>(IntroduceField)
" extract variable
vmap <leader>ev <action>(IntroduceVariable)

3.2、Easymotion

" 启动easymotion s2 当输入两个字符的时候触发
nmap ss <Plug>(easymotion-s2)

Changelog

6/3/25, 1:49 AM

View All Changelog

d3a6d-Merge branch 'dev1'on 6/3/25

编辑器：Idea

求求了，快滚去学习！！！