使用formatter-maven-plugin格式化源代码

概述

  代码相信同学们都不陌生,但对于代码风格,或许大家并不是很了解,今天就来聊聊开发中比较重要的一个环节,就是代码风格,什么是代码风格呢?

代码风格(英语:Programming style)即程序开发人员所编写源代码的书写风格。良好代码风格的特点是使代码易读。

  代码风格真的是太重要了,尤其是在团队协作开发中,一套好的代码风格和规范大家都能适应并看懂、如果没有统一的代码风格,阅读协作起来是相当困难的。你这个风格、我那个风格、那岂要不是乱套了。
  刚开始从事开发行业的时候,上级让我改一个小功能,我改好了,然后提交到了SVN,正好有个同事也改了个东西,与资源库同步的时候显示他冲突了,随即被同事生气的教训了一顿,那会我真是一头雾水,我就改了一个地方,怎么冲突了,原来自己写代码有个习惯那就是格式化一下代码,正式因为和项目整体代码风格不一致,所以造成了冲突,当时同事处理的很痛苦,毕竟几百行呢,试想下1万多行代码遇到这种情况怎样?不瞒大家说,我目前负责维护的一个项目,已经1万6千多行了,不过目前我已经在重构重写了,风格、规范都上纲上线,不用因为风格和规范而烦恼,轻松舒服。
  代码规范就不说了,目前我们用的是阿里巴巴代码规范,相信很多同学都知道并用过,不了解有兴趣的同学请点击查看。
  良好的风格可节约大量处理问题时间、避免很多问题,其中最重要的一点就是审查,风格一致可排除代码中大量的换行、空格、直接定位新增修改过的地方。
  对于代码格式化风格,可以在开发工具进行配置,为啥还要用插件呢?首先团队人员工具不一样,有使用IDEA、有使用eclipse的,萝卜青菜各有所爱,每个人都需要配置一遍,但如果有个插件,通过maven命令便可以无视开发工具格式化统一的风格呢?今天它来了。

官网

https://code.revelc.net/formatter-maven-plugin/

使用

环境要求

  • Maven 3.3.9+
  • JDK1.8+

pom配置

<project>
    ...
    <plugins>
      <plugin>
        <groupId>net.revelc.code.formatter</groupId>
        <artifactId>formatter-maven-plugin</artifactId>
        <version>2.11.0</version>
      </plugin>
    </plugins>
    ...
</project>

运行命令:mvn formatter:format执行格式化。

注:使用此配置,将使用默认编译器版本(1.8)和当前系统的行结尾来格式化项目src/main/javasrc/test/java中的代码源文件。

上面通过命令的方式格式化了源文件,那如何在构建期间格式化源文件呢,很简单将formatgoal包含在插件执行就好了,那将在构建compile目标期间运行插件。

<project>
    ...
    <plugins>
      <plugin>
        <groupId>net.revelc.code.formatter</groupId>
        <artifactId>formatter-maven-plugin</artifactId>
        <version>2.11.0</version>
        <executions>
          <execution>
            <goals>
              <goal>format</goal>
            </goals>
          </execution>
        </executions>
      </plugin>
    </plugins>
    ...
</project>

为了在构建过程中验证源代码,请在插件执行中包括validate goal 。

<project>
    ...
    <plugins>
      <plugin>
        <groupId>net.revelc.code.formatter</groupId>
        <artifactId>formatter-maven-plugin</artifactId>
        <version>2.11.0</version>
        <executions>
          <execution>
            <goals>
              <goal>validate</goal>
            </goals>
          </execution>
        </executions>
      </plugin>
    </plugins>
    ...
</project>

可用目标

  • formatter:format: 用于使用Eclipse代码格式化程序格式化Java源代码。与原始hash到格式化后的hash以及缓存的hash相比,使用内容的sha512 hash避免了源文件的重新格式化。
  • formatter:help :在formatter-maven-plugin上显示帮助信息。
  • formatter:validate :专注于CI服务器。如果代码未按预期格式格式化,则将使构建失败

进阶

指定目录

  默认情况下,该插件会格式化src/main/javasrc/test/java目录中所有Java源文件的格式。要想在其他位置格式化源文件,可以使用directories参数。下面的示例将格式化java主要源目录和生成的源目录中的文件:

<plugin>
 <groupId>net.revelc.code.formatter</groupId>
 <artifactId>formatter-maven-plugin</artifactId>
 <version>2.11.0</version>
 <configuration>
   <directories>
     <directory>${project.build.sourceDirectory}</directory>
     <directory>${project.build.directory}/generated-sources</directory>
   </directories>
 </configuration>
</plugin> 

指定包含和忽略

  还可以使用includesexcludes参数对指定要格式化的Java源文件进行更多控制。这些参数是相对于所有源目录src/main/javasrc/test/java。下面的示例仅格式化include包中的文件,Test.java和exclude包中的文件除外:

<plugin>
  <groupId>net.revelc.code.formatter</groupId>
  <artifactId>formatter-maven-plugin</artifactId>
  <version>2.11.0</version>
  <configuration>
    <includes>
      <include>cn/smallbun/manage/formatter/</include>
    </includes>
    <excludes>
      <exclude>cn/smallbun/manage/special/</exclude>
      <exclude>**/*Test.java</exclude>
    </excludes>
  </configuration>
</plugin>

格式化编码

  使用encoding参数,指定格式化期间要使用的编码,下面示例指定在格式化期间使用UTF-8编码:

<plugin>
  <groupId>net.revelc.code.formatter</groupId>
  <artifactId>formatter-maven-plugin</artifactId>
  <version>2.11.0</version>
  <configuration>
    <encoding>UTF-8</encoding>
  </configuration>
</plugin>

  默认情况下,如果在pom中指定project.build.sourceEncoding,则插件使用该属性。否则,将使用当前系统的文件编码。

<properties>
  <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<plugin>
  <groupId>net.revelc.code.formatter</groupId>
  <artifactId>formatter-maven-plugin</artifactId>
  <version>2.11.0</version>
</plugin>

自定义配置文件

  在开发中公司都有统一的代码配置文件,我们只需要在插件配置即可,插件只支持使用eclipse格式化配置。大家可以将使用configFile参数为代码格式化程序指定格式化选项。

<plugin>
  <groupId>net.revelc.code.formatter</groupId>
  <artifactId>formatter-maven-plugin</artifactId>
  <version>2.11.0</version>
  <configuration>
    <configFile>${project.basedir}/Formatter.xml</configFile>
  </configuration>
</plugin>

  默认情况下,该插件使用configFile中的编译器版本而不是编译器参数。要指定使用编译器参数而不是configFile中的参数,可将overrideConfigCompilerVersion参数设置为true。该参数对于避免更新configFile来使编译器版本与pom保持同步非常有用。

<plugin>
  <groupId>net.revelc.code.formatter</groupId>
  <artifactId>formatter-maven-plugin</artifactId>
  <version>2.11.0</version>
  <configuration>
    <configFile>${project.basedir}/Formatter.xml</configFile>
    <overrideConfigCompilerVersion>true</overrideConfigCompilerVersion>
    <compilerSource>1.9</compilerSource>
    <compilerCompliance>1.9</compilerCompliance>
    <compilerTargetPlatform>1.9</compilerTargetPlatform>
  </configuration>
</plugin>

  上面示例使用指定的编译器版本进行格式化,除Formatter.xml配置文件中定义的编译器版本以外的所有设置。

格式化模板

  这里提供自己使用的一套格式化模板😍

<profiles version="1">
<profile kind="CodeFormatterProfile" name="SmallBun Convention" version="1">
<setting id="org.eclipse.jdt.core.formatter.comment.insert_new_line_before_root_tags" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.disabling_tag" value="@formatter:off"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_annotation" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_type_parameters" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_type_declaration" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_type_arguments" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.brace_position_for_anonymous_type_declaration" value="end_of_line"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_colon_in_case" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_brace_in_array_initializer" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.comment.new_lines_at_block_boundaries" value="true"/>
<setting id="org.eclipse.jdt.core.formatter.insert_new_line_in_empty_annotation_declaration" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_new_line_before_closing_brace_in_array_initializer" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_annotation" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.blank_lines_before_field" value="0"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_while" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.use_on_off_tags" value="true"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_between_empty_parens_in_annotation_type_member_declaration" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_new_line_before_else_in_if_statement" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_prefix_operator" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.keep_else_statement_on_same_line" value="false"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_ellipsis" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.comment.insert_new_line_for_parameter" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_annotation_type_declaration" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.indent_breaks_compare_to_cases" value="true"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_at_in_annotation" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.alignment_for_multiple_fields" value="16"/>
<setting id="org.eclipse.jdt.core.formatter.alignment_for_expressions_in_array_initializer" value="18"/>
<setting id="org.eclipse.jdt.core.formatter.alignment_for_conditional_expression" value="84"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_for" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_binary_operator" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_question_in_wildcard" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.brace_position_for_array_initializer" value="end_of_line"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_between_empty_parens_in_enum_constant" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_new_line_before_finally_in_try_statement" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_new_line_after_annotation_on_local_variable" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_new_line_before_catch_in_try_statement" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_while" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.blank_lines_after_package" value="1"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_type_parameters" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.continuation_indentation" value="2"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_postfix_operator" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.alignment_for_arguments_in_method_invocation" value="20"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_angle_bracket_in_type_arguments" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_superinterfaces" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.blank_lines_before_new_chunk" value="1"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_binary_operator" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.blank_lines_before_package" value="0"/>
<setting id="org.eclipse.jdt.core.compiler.source" value="1.7"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_enum_constant_arguments" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_constructor_declaration" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.comment.format_line_comments" value="false"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_closing_angle_bracket_in_type_arguments" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_enum_declarations" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.join_wrapped_lines" value="true"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_block" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.alignment_for_arguments_in_explicit_constructor_call" value="20"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_method_invocation_arguments" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.blank_lines_before_member_type" value="1"/>
<setting id="org.eclipse.jdt.core.formatter.align_type_members_on_columns" value="true"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_enum_constant" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_for" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_method_declaration" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.alignment_for_selector_in_method_invocation" value="20"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_switch" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_unary_operator" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_colon_in_case" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.comment.indent_parameter_description" value="true"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_method_declaration" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_switch" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_enum_declaration" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_angle_bracket_in_type_parameters" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_new_line_in_empty_type_declaration" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.comment.clear_blank_lines_in_block_comment" value="false"/>
<setting id="org.eclipse.jdt.core.formatter.lineSplit" value="100"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_if" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_between_brackets_in_array_type_reference" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_parenthesized_expression" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_explicitconstructorcall_arguments" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_constructor_declaration" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.blank_lines_before_first_class_body_declaration" value="0"/>
<setting id="org.eclipse.jdt.core.formatter.indentation.size" value="4"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_between_empty_parens_in_method_declaration" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.enabling_tag" value="@formatter:on"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_enum_constant" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.alignment_for_superclass_in_type_declaration" value="18"/>
<setting id="org.eclipse.jdt.core.formatter.alignment_for_assignment" value="0"/>
<setting id="org.eclipse.jdt.core.compiler.problem.assertIdentifier" value="error"/>
<setting id="org.eclipse.jdt.core.formatter.tabulation.char" value="space"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_constructor_declaration_parameters" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_prefix_operator" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.indent_statements_compare_to_body" value="true"/>
<setting id="org.eclipse.jdt.core.formatter.blank_lines_before_method" value="1"/>
<setting id="org.eclipse.jdt.core.formatter.wrap_outer_expressions_when_nested" value="true"/>
<setting id="org.eclipse.jdt.core.formatter.format_guardian_clause_on_one_line" value="false"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_colon_in_for" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_cast" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.alignment_for_parameters_in_constructor_declaration" value="18"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_colon_in_labeled_statement" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.brace_position_for_annotation_type_declaration" value="end_of_line"/>
<setting id="org.eclipse.jdt.core.formatter.insert_new_line_in_empty_method_body" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.alignment_for_method_declaration" value="0"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_method_invocation" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_bracket_in_array_allocation_expression" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_enum_constant" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_annotation" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_at_in_annotation_type_declaration" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_method_declaration_throws" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_if" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.brace_position_for_switch" value="end_of_line"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_method_declaration_throws" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_parenthesized_expression_in_return" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_annotation" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_question_in_conditional" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_question_in_wildcard" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_bracket_in_array_allocation_expression" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_parenthesized_expression_in_throw" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_type_arguments" value="do not insert"/>
<setting id="org.eclipse.jdt.core.compiler.problem.enumIdentifier" value="error"/>
<setting id="org.eclipse.jdt.core.formatter.indent_switchstatements_compare_to_switch" value="true"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_ellipsis" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.brace_position_for_block" value="end_of_line"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_for_inits" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.brace_position_for_method_declaration" value="end_of_line"/>
<setting id="org.eclipse.jdt.core.formatter.compact_else_if" value="true"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_array_initializer" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_for_increments" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.format_line_comment_starting_on_first_column" value="true"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_bracket_in_array_reference" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.brace_position_for_enum_constant" value="end_of_line"/>
<setting id="org.eclipse.jdt.core.formatter.comment.indent_root_tags" value="true"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_enum_declarations" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_explicitconstructorcall_arguments" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_switch" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_superinterfaces" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_method_declaration_parameters" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_allocation_expression" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.tabulation.size" value="4"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_bracket_in_array_type_reference" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_new_line_after_opening_brace_in_array_initializer" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_closing_brace_in_block" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_bracket_in_array_reference" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_new_line_in_empty_enum_constant" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_angle_bracket_in_type_arguments" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_constructor_declaration" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_if" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_constructor_declaration_throws" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.comment.clear_blank_lines_in_javadoc_comment" value="false"/>
<setting id="org.eclipse.jdt.core.formatter.alignment_for_throws_clause_in_constructor_declaration" value="18"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_assignment_operator" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_assignment_operator" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.indent_empty_lines" value="false"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_synchronized" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_closing_paren_in_cast" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_method_declaration_parameters" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.brace_position_for_block_in_case" value="end_of_line"/>
<setting id="org.eclipse.jdt.core.formatter.number_of_empty_lines_to_preserve" value="1"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_method_declaration" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_catch" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_constructor_declaration" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_method_invocation" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_bracket_in_array_reference" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_and_in_type_parameter" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.alignment_for_arguments_in_qualified_allocation_expression" value="20"/>
<setting id="org.eclipse.jdt.core.compiler.compliance" value="1.7"/>
<setting id="org.eclipse.jdt.core.formatter.continuation_indentation_for_array_initializer" value="2"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_between_empty_brackets_in_array_allocation_expression" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_at_in_annotation_type_declaration" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.alignment_for_arguments_in_allocation_expression" value="20"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_cast" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_unary_operator" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_angle_bracket_in_parameterized_type_reference" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_anonymous_type_declaration" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.keep_empty_array_initializer_on_one_line" value="false"/>
<setting id="org.eclipse.jdt.core.formatter.insert_new_line_in_empty_enum_declaration" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.keep_imple_if_on_one_line" value="false"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_constructor_declaration_parameters" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_closing_angle_bracket_in_type_parameters" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_new_line_at_end_of_file_if_missing" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_colon_in_for" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_colon_in_labeled_statement" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_parameterized_type_reference" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.alignment_for_superinterfaces_in_type_declaration" value="18"/>
<setting id="org.eclipse.jdt.core.formatter.alignment_for_binary_expression" value="18"/>
<setting id="org.eclipse.jdt.core.formatter.brace_position_for_enum_declaration" value="end_of_line"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_while" value="do not insert"/>
<setting id="org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode" value="enabled"/>
<setting id="org.eclipse.jdt.core.formatter.put_empty_statement_on_new_line" value="true"/>
<setting id="org.eclipse.jdt.core.formatter.insert_new_line_after_label" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_new_line_after_annotation_on_parameter" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_angle_bracket_in_type_parameters" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_between_empty_parens_in_method_invocation" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_new_line_before_while_in_do_statement" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.alignment_for_arguments_in_enum_constant" value="18"/>
<setting id="org.eclipse.jdt.core.formatter.comment.format_javadoc_comments" value="false"/>
<setting id="org.eclipse.jdt.core.formatter.comment.line_length" value="80"/>
<setting id="org.eclipse.jdt.core.formatter.blank_lines_between_import_groups" value="1"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_enum_constant_arguments" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_semicolon" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.brace_position_for_constructor_declaration" value="end_of_line"/>
<setting id="org.eclipse.jdt.core.formatter.number_of_blank_lines_at_beginning_of_method_body" value="0"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_colon_in_conditional" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.indent_body_declarations_compare_to_type_header" value="true"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_annotation_type_member_declaration" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.wrap_before_binary_operator" value="true"/>
<setting id="org.eclipse.jdt.core.formatter.indent_body_declarations_compare_to_enum_declaration_header" value="true"/>
<setting id="org.eclipse.jdt.core.formatter.blank_lines_between_type_declarations" value="1"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_synchronized" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.indent_statements_compare_to_block" value="true"/>
<setting id="org.eclipse.jdt.core.formatter.alignment_for_superinterfaces_in_enum_declaration" value="18"/>
<setting id="org.eclipse.jdt.core.formatter.join_lines_in_comments" value="true"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_question_in_conditional" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_multiple_field_declarations" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.alignment_for_compact_if" value="16"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_for_inits" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.indent_switchstatements_compare_to_cases" value="true"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_array_initializer" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_colon_in_default" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_and_in_type_parameter" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_between_empty_parens_in_constructor_declaration" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.blank_lines_before_imports" value="1"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_colon_in_assert" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.comment.format_html" value="true"/>
<setting id="org.eclipse.jdt.core.formatter.alignment_for_throws_clause_in_method_declaration" value="18"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_angle_bracket_in_type_parameters" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_bracket_in_array_allocation_expression" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_new_line_in_empty_anonymous_type_declaration" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_colon_in_conditional" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_angle_bracket_in_parameterized_type_reference" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_for" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_postfix_operator" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.comment.format_source_code" value="true"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_synchronized" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_allocation_expression" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_constructor_declaration_throws" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.alignment_for_parameters_in_method_declaration" value="18"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_brace_in_array_initializer" value="insert"/>
<setting id="org.eclipse.jdt.core.compiler.codegen.targetPlatform" value="1.7"/>
<setting id="org.eclipse.jdt.core.formatter.use_tabs_only_for_leading_indentations" value="false"/>
<setting id="org.eclipse.jdt.core.formatter.alignment_for_arguments_in_annotation" value="0"/>
<setting id="org.eclipse.jdt.core.formatter.insert_new_line_after_annotation_on_member" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.comment.format_header" value="false"/>
<setting id="org.eclipse.jdt.core.formatter.comment.format_block_comments" value="false"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_enum_constant" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.alignment_for_enum_constants" value="2"/>
<setting id="org.eclipse.jdt.core.formatter.insert_new_line_in_empty_block" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.indent_body_declarations_compare_to_annotation_declaration_header" value="true"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_parenthesized_expression" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_parenthesized_expression" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_catch" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_multiple_local_declarations" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_switch" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_comma_in_for_increments" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_method_invocation" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_colon_in_assert" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.brace_position_for_type_declaration" value="end_of_line"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_brace_in_array_initializer" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_between_empty_braces_in_array_initializer" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_opening_paren_in_method_declaration" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_semicolon_in_for" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_paren_in_catch" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_angle_bracket_in_parameterized_type_reference" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_multiple_field_declarations" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_closing_paren_in_annotation" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_parameterized_type_reference" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_method_invocation_arguments" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.comment.new_lines_at_javadoc_boundaries" value="true"/>
<setting id="org.eclipse.jdt.core.formatter.blank_lines_after_imports" value="1"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_multiple_local_declarations" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.indent_body_declarations_compare_to_enum_constant_header" value="true"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_semicolon_in_for" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.never_indent_line_comments_on_first_column" value="false"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_before_opening_angle_bracket_in_type_arguments" value="do not insert"/>
<setting id="org.eclipse.jdt.core.formatter.never_indent_block_comments_on_first_column" value="false"/>
<setting id="org.eclipse.jdt.core.formatter.keep_then_statement_on_same_line" value="false"/>
</profile>
</profiles>

问题

@formatter:off 无效

打开样式文件,将use_on_off_tags设置为true

总结

  以上就是使用插件的内容了,可能有不详细的,时间久了插件也会有所更新,大家可以去官网查看文档,程序员学会看文档真的很重要,使用插件有好处也有弊端,大家也可以直接使用工具配置方式,或者使用此插件,看情况吧,看场景了。即使不用了解一下也是好的嘛。

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