目錄
idea怎麼格式化程式碼
idea
idea格式化代码的方法：1、直接使用快捷键“Ctrl+Alt+L”格式化代码。2、打开打开idea，依次点击“File”-“Settings”-“Plugins”，搜索并安装“eclipse code formatter”；然后导入配置文件“eclipse-codestyle.xml”；最后使用快捷键“Ctrl+Shift+Alt+L”格式化代码。
本教程操作环境：windows10系统、IDEA2020.1.3、Dell G3电脑。
IDEA 全称 IntelliJ IDEA，是java编程语言的集成开发环境。IntelliJ在业界被公认为最好的Java开发工具，尤其在智能代码助手、代码自动提示、重构、JavaEE支持、各类版本工具(git、svn等)、JUnit、CVS整合、代码分析、 创新的GUI设计等方面的功能可以说是超常的。IDEA是JetBrains公司的产品，这家公司总部位于捷克共和国的首都布拉格，开发人员以严谨著称的东欧程序员为主。它的旗舰版还支持HTML，CSS，PHP，MySQL，Python等。免费版只支持Java,Kotlin等少数语言。
idea格式化代码的方法
方法1：原生方法
在IDEA中，可以使用Ctrl+Alt+L快捷键格式化代码。
使用Ctrl+Alt+L快捷键格式化代码，这时代码格式会变得很工整。
方法2：利用插件
是否遇到过使用快捷键“Ctrl+Alt+L”后代码几乎没变化，格式化后的结果没有达到预期效果，不妨试试配置代码格式化模板。
1、安装插件：EclipseCodeFormatter
阿里配置文件只是针对eclipse，所以导入配置文件之前需要先安装EclipseFormatter插件
打开idea编辑器：File->Settings->Plugins，搜索 eclipse code formatter。
我这是已经安装好的页面
2、导入配置文件 eclipse-codestyle.xml
上面步骤操作完页面不要关，找到下面的Other Settings->Adapter eclipse code formatter路径，按照图片位置找到eclipse-codestyle.xml文件保存的位置，添加进去就行了（文件放文章后面）
只格式化自己写的代码，不格式化版本仓库里面的代码，防止代码评审或者代码对比出现大量不一致的代码
快捷键：Ctrl+Shift+Alt+L
- 在默认情况下，Scope 选项是 Whole file ，也就是格式化当前窗口的全部代码
- Only changes uncommitted to VCS表示只格式化我修改的，不格式化我未修改的代码
- 我们也可以设置在自动保存的时候触发代码格式化。 操作方法：File->Settings->Tools->Actions on Save 中进行设置。
注意在勾选完Reformat code 之后后面的 Whole file 这里要改为 Changed lines
eclipse-codestyle.xml文件自取，记得一键三连哦0.0
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<profiles>
<profile>
<!--可变参数的... Idea没有对应的配置项，强制insert-->
<setting></setting>
<!--枚举值之间 Idea没有对应的配置项，强制insert-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.insert_space_before_comma_in_method_invocation_arguments=Java:SPACE_BEFORE_COMMA-->
<!--org.eclipse.jdt.core.formatter.insert_space_before_comma_in_method_declaration_parameters=Java:SPACE_BEFORE_COMMA
由于IDEA只有一个SPACE_BEFORE_COMMA选项，所以统一设置 insert_space_before_comma 为 do not insert
-->
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<!--insert_space_before_comma end-->
<!--org.eclipse.jdt.core.formatter.insert_space_after_comma_in_type_arguments=Java:SPACE_AFTER_COMMA_IN_TYPE_ARGUMENTS-->
<setting></setting>
<!--IDEA只有一个配置项SPACE_AFTER_COMMA，insert_space_after_comma*统一设置成insert-->
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<!--insert_space_after_comma end-->
<!--org.eclipse.jdt.core.formatter.insert_space_before_colon_in_conditional=Java:SPACE_BEFORE_COLON-->
<setting></setting>
<setting></setting>
<setting></setting>
<!--org.eclipse.jdt.core.formatter.insert_space_after_colon_in_conditional=Java:SPACE_AFTER_COLON-->
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<!--IDEA不支持配置，默认do not insert-->
<setting></setting>
<setting></setting>
<setting></setting>
<!--这个在Eclipse也没有找到配置的地方-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.insert_space_before_semicolon=Java:SPACE_BEFORE_SEMICOLON
程序导入的时候强制将SPACE_BEFORE_SEMICOLON设置为false
-->
<setting></setting>
<setting></setting>
<setting></setting>
<!--SPACE_AFTER_SEMICOLON=true-->
<setting></setting>
<setting></setting>
<!--IDEA不支持配置,do not insert-->
<setting></setting>
<setting></setting>
<setting></setting>
<!--IDEA不支持，使用默认-->
<setting></setting>
<setting></setting>
<!--org.eclipse.jdt.core.formatter.insert_space_after_binary_operator=Java:<Programmatic>-->
<setting></setting>
<setting></setting>
<!--IDEA不支持配置，使用如下值，两者对应-->
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<!--Java:SPACE_BEFORE_OPENING_ANGLE_BRACKET_IN_TYPE_PARAMETER-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.insert_space_after_closing_angle_bracket_in_type_arguments=Java:SPACE_AFTER_CLOSING_ANGLE_BRACKET_IN_TYPE_ARGUMENT-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.insert_space_after_closing_brace_in_block=Java:<Programmatic>-->
<setting></setting>
<!--IDEA使用了对应的配置：Java:SPACE_WITHIN_ARRAY_INITIALIZER_BRACES，但感觉不太好，IDEA默认不插入，Eclipse也使用不插入-->
<setting></setting>
<!--use default insert-->
<setting></setting>
<!--use default do not insert -->
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<!--use default insert-->
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<!--org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_switch=Java:SPACE_BEFORE_SWITCH_LBRACE-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_type_declaration=Java:SPACE_BEFORE_CLASS_LBRACE-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_block=Java:<Programmatic>-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_array_initializer=Java:SPACE_BEFORE_ARRAY_INITIALIZER_LBRACE-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_method_declaration=Java:SPACE_BEFORE_METHOD_LBRACE-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.insert_space_after_question_in_conditional=Java:SPACE_AFTER_QUEST-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.insert_space_before_question_in_conditional=Java:SPACE_BEFORE_QUEST-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_annotation=Java:SPACE_BEFORE_ANOTATION_PARAMETER_LIST-->
<setting></setting>
<!--use default do not insert-->
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<!--下面两个对应IDEA中的一个配置Java:SPACE_AROUND_ASSIGNMENT_OPERATORS，使用insert-->
<setting></setting>
<setting></setting>
<!--org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_catch=Java:SPACE_BEFORE_CATCH_PARENTHESES-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_method_invocation=Java:SPACE_BEFORE_METHOD_CALL_PARENTHESES-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_try=Java:SPACE_BEFORE_TRY_PARENTHESES-->
<setting></setting>
<!--下面两个对应IDEA中的一个配置Java:SPACE_AROUND_UNARY_OPERATOR，使用do not insert-->
<setting></setting>
<setting></setting>
<!--org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_if=Java:SPACE_BEFORE_IF_PARENTHESES-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_while=Java:SPACE_BEFORE_WHILE_PARENTHESES-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.insert_space_after_closing_paren_in_cast=Java:SPACE_AFTER_TYPE_CAST-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_method_declaration=Java:SPACE_BEFORE_METHOD_PARENTHESES-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_for=Java:SPACE_BEFORE_FOR_PARENTHESES-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_synchronized=Java:SPACE_BEFORE_SYNCHRONIZED_PARENTHESES-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_switch=Java:SPACE_BEFORE_SWITCH_PARENTHESES-->
<setting></setting>
<!--下面两个对应IDEA中的一个配置Java:SPACE_AROUND_LAMBDA_ARROW，使用insert-->
<setting></setting>
<setting></setting>
<!--SPACE_WITHIN_EMPTY_ARRAY_INITIALIZER_BRACES-->
<setting></setting>
<!--Idea -> Wrapping And Braces -> Simple classes in one line -->
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<!--Idea -> Wrapping And Braces -> Simple method in one line -->
<setting></setting>
<!--因为Idea不支持配置，所以设置为 Idea默认值-->
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<!--Idea可以通过Wrap Always实现 TODO-->
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<!--Idea -> Wrapping And Braces -> Simple block in one line -> do not select -->
<setting></setting>
<!--Idea -> Wrapping And Braces -> try statement -> catch.... (Java:CATCH_ON_NEW_LINE)-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.insert_new_line_at_end_of_file_if_missing=<Programmatic>-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.insert_new_line_before_closing_brace_in_array_initializer=Java:ARRAY_INITIALIZER_RBRACE_ON_NEXT_LINE-->
<setting></setting>
<!--#org.eclipse.jdt.core.formatter.insert_new_line_after_opening_brace_in_array_initializer=Java:ARRAY_INITIALIZER_LBRACE_ON_NEXT_LINE-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.insert_new_line_before_else_in_if_statement=Java:ELSE_ON_NEW_LINE-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.insert_new_line_before_while_in_do_statement=Java:WHILE_ON_NEW_LINE-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.insert_new_line_before_finally_in_try_statement=Java:FINALLY_ON_NEW_LINE-->
<setting></setting>
<!--comment start-->
<setting></setting>
<!--ENABLE_JAVADOC_FORMATTING-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.comment.clear_blank_lines_in_javadoc_comment=<Programmatic>-->
<setting></setting>
<!--IDEA无对应设置，所以关闭对block comment的格式化 -->
<setting></setting>
<setting></setting>
<setting></setting>
<!--org.eclipse.jdt.core.formatter.never_indent_line_comments_on_first_column=Java:KEEP_FIRST_COLUMN_COMMENT-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.use_on_off_tags=FORMATTER_TAGS_ENABLED-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.disabling_tag=FORMATTER_OFF_TAG-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.enabling_tag=FORMATTER_ON_TAG-->
<setting></setting>
<!--下面的没有IDEA对应项，在代码里面对IDEA中使用默认值即可,LINE_COMMENT_AT_FIRST_COLUMN BLOCK_COMMENT_AT_FIRST_COLUMN设置为false-->
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<!--和IDEA保持一致，注释换行-->
<setting></setting>
<setting></setting>
<!--comment end-->
<!--org.eclipse.jdt.core.formatter.blank_lines_after_imports=Java:BLANK_LINES_AFTER_IMPORTS-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.blank_lines_before_imports=Java:BLANK_LINES_BEFORE_IMPORTS-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.blank_lines_after_package=Java:BLANK_LINES_AFTER_PACKAGE-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.blank_lines_between_type_declarations=Java:BLANK_LINES_AROUND_CLASS-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.number_of_blank_lines_at_beginning_of_method_body=Java:BLANK_LINES_BEFORE_METHOD_BODY-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.blank_lines_before_first_class_body_declaration=Java:<Programmatic>-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.blank_lines_before_field=Java:BLANK_LINES_AROUND_FIELD-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.blank_lines_before_method=Java:BLANK_LINES_AROUND_METHOD-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.blank_lines_before_package=Java:BLANK_LINES_BEFORE_PACKAGE-->
<setting></setting>
<!--下面IDEA没有对应设置，使用对应值即可-->
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<!--org.eclipse.jdt.core.formatter.indentation.size=Java:IndentOptions:INDENT_SIZE-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.continuation_indentation=Java:IndentOptions:<Programmatic>-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.indent_body_declarations_compare_to_type_header=Java:<Programmatic>-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.use_tabs_only_for_leading_indentations=Java:IndentOptions:SMART_TABS-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.indent_switchstatements_compare_to_switch=Java:INDENT_CASE_FROM_SWITCH-->
<setting></setting>
<!--KEEP_INDENTS_ON_EMPTY_LINES-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.tabulation.size=Java:IndentOptions:<Programmatic>-->
<setting></setting>
<!--Java:IndentOptions:<Programmatic>-->
<setting></setting>
<!--下面IDEA没有对应设置，使用对应值即可-->
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<!--Java:<Programmatic>-->
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<!--下面没有对应的IDEA设置，Eclipse先使用对应值-->
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<!--IDEA默认配置在同一行，Eclipse使用对应值即可-->
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<!--Java:BINARY_OPERATION_SIGN_ON_NEXT_LINE-->
<setting></setting>
<!--ASSIGNMENT_WRAP 需要设置为 WRAP_AS_NEEDED WRAP_AS_NEEDED . Add in jdt.core-3.12，it's not work in previous version -->
<setting></setting>
<!--IDEA无配置项，Eclipse使用对应值即可-->
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<!--org.eclipse.jdt.core.formatter.keep_then_statement_on_same_line=Java:KEEP_CONTROL_STATEMENT_IN_ONE_LINE-->
<setting></setting>
<!--org.eclipse.jdt.core.formatter.compact_else_if=Java:SPECIAL_ELSE_IF_TREATMENT-->
<setting></setting>
<!--Java:ALIGN_GROUP_FIELD_DECLARATIONS-->
<setting></setting>
<!--Java:<Programmatic>-->
<setting></setting>
<setting></setting>
<!--统一为end_of_lint，IDEA默认一致-->
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<setting></setting>
<!-- <setting id="org.eclipse.jdt.core.compiler.source" value="1.8"/>
<setting id="org.eclipse.jdt.core.compiler.compliance" value="1.8"/>
<setting id="org.eclipse.jdt.core.compiler.codegen.targetPlatform" value="1.8"/>
<setting id="org.eclipse.jdt.core.compiler.problem.enumIdentifier" value="error"/>
<setting id="org.eclipse.jdt.core.compiler.problem.assertIdentifier" value="error"/>
<setting id="org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode" value="enabled"/>
-->
<!--Java:KEEP_SIMPLE_BLOCKS_IN_ONE_LINE-->
<setting></setting>
<!--Java:CLASS_BRACE_STYLE，统一使用end_of_line TODO-->
<setting></setting>
<setting></setting>
<!--org.eclipse.jdt.core.formatter.lineSplit=RIGHT_MARGIN-->
<setting></setting>
</profile>
</profiles>登入後複製
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一、準備工作使用Idea建構一個helloworld的SpringBoot專案。開發環境說明：（1）SpringBoot2.7.0（2）Idea：IntelliJIDEA2022.2.2（3）OS：MacOS環境不太一樣，有些操作是有些微區別的，但是整體的思路是一樣的。二、啟動多個SpringBoot2.1方案一：修改設定檔的連接埠在SpringBoot專案中，連接埠號碼可以在設定檔進行配置，所以最簡單可以想到的方案是修改設定檔application.(properties/yml)的端口配置s
Idea中Springboot熱部署無效怎麼解決
May 18, 2023 pm 06:01 PM
一、開啟idea自動make功能1-從編譯器啟用Automake按:CTRL+SHIFT+ATYPE:makeprojectautomatically按:Enter啟用MakeProject自動功能2-在應用程式運行時啟用Automake按:CTRL+SHIFT+ATYPE:Registry找到keycompiler .automake.allow。
idea springBoot專案自動注入mapper為空報錯誤如何解決
May 17, 2023 pm 06:49 PM
在SpringBoot專案中，如果使用了MyBatis作為持久層框架，使用自動注入時可能會遇到mapper報空指標異常的問題。這是因為在自動注入時，SpringBoot無法正確識別MyBatis的Mapper接口，需要進行一些額外的配置。解決這個問題的方法有兩種：1.在Mapper介面上加入註解在Mapper介面上加入@Mapper註解，告訴SpringBoot這個介面是Mapper接口，需要進行代理。範例如下：@MapperpublicinterfaceUserMapper{//...}2
IntelliJ IDEA中如何調試Java Stream操作
May 09, 2023 am 11:25 AM
Stream作業是Java8推出的一大亮點！雖然java.util.stream很強大，但還是有很多開發者在實際工作中很少使用，其中吐槽最多的一個原因就是不好調試，一開始確實是這樣，因為stream這樣的流式操作在DEBUG的時候，是一行程式碼，直接下一步的時候，其實一下就過了好多操作，這樣我們就很難判斷到底是裡面的哪一行出了問題。外掛：JavaStreamDebugger如果你用的IDEA版本比較新的話，這個插件已經是自備的了，就不需要安裝了。如果還沒安裝的話，就手動安裝一下，然後繼續下面
idea是什麼軟體
Sep 02, 2022 pm 05:05 PM
idea是一種Java整合開發環境工具軟體，由JetBrains軟體公司開發。 IDEA提倡智慧編碼，特殊功能有：智慧選取、編碼輔助、靈活的排版、動態語法偵測、程式碼檢查、對JSP的完全支援、預設範本、版本控製完美支援、智慧程式碼等。
基礎教學：使用IDEA建立Maven項目
Feb 19, 2024 pm 04:43 PM
IDEA（IntelliJIDEA）是一款強大的整合開發環境，可協助開發人員快速且有效率地開發各種Java應用程式。在Java專案開發中，使用Maven作為專案管理工具能夠幫助我們更好地管理依賴函式庫、建置專案等。本文將詳細介紹如何在IDEA中建立一個Maven專案的基本步驟，同時提供具體的程式碼範例。步驟一：開啟IDEA並建立新專案開啟IntelliJIDEA