checkstyle配置的官方网站：http://checkstyle.sourceforge.net/config.html
（1）新建maven项目，配置checkstyle插件
pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>cn.demo</groupId> <artifactId>JavademoIn7</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <!-- 打包成jar包 --> <name>JavademoIn7</name> <url>http://maven.apache.org</url> <build> <finalName>JavademoIn7</finalName> <plugins> <plugin> <inherited>true</inherited> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.1</version> <configuration> <source>${compiler.source}</source> <target>${compiler.target}</target> <encoding>${project.build.sourceEncoding}</encoding> </configuration> </plugin> <!-- 检测代码风格的插件 checkstyle（要在项目根目录下配置规则文件checkstyle.xml），然后使用mvn checkstyle::check命令验证--> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-checkstyle-plugin</artifactId> <version>3.0.0</version> <executions> <execution> <id>validate</id> <phase>validate</phase> <configuration> <encoding>UTF-8</encoding> <consoleOutput>true</consoleOutput> <failsOnError>true</failsOnError> <linkXRef>false</linkXRef> </configuration> <goals> <goal>check</goal> </goals> </execution> </executions> </plugin> <!-- 指定执行的主类（main方法所在的类）--> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-jar-plugin</artifactId> <version>2.6</version> <configuration> <archive> <!-- 添加index则不从mainfest中读取classpath，而是从Index.list中读取 --> <!-- <index>true</index> --> <manifest> <mainClass>cn.demo.JavademoIn7.application.ApplicationMain</mainClass> </manifest> </archive> </configuration> </plugin> <!-- 将执行项目的脚本文件一起打包 --> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-assembly-plugin</artifactId> <version>2.4.1</version> <executions> <execution> <id>${project.version}</id><!--名字任意 --> <phase>package</phase> <!-- 绑定到package生命周期阶段上 --> <goals> <goal>single</goal> <!-- 只运行一次 --> </goals> <configuration> <descriptors> <!--描述文件路径--> <descriptor>src/main/resources/script.xml</descriptor> </descriptors> <!--这样配置后，mvn deploy不会把assembly打的zip包上传到nexus--> <attach>false</attach> </configuration> </execution> </executions> </plugin> <!-- findbugs插件 ：静态检查代码的错误--> <plugin> <groupId>org.codehaus.mojo</groupId> <artifactId>findbugs-maven-plugin</artifactId> <version>3.0.4</version> <configuration> <!-- 设置分析工作的等级，可以为Min、Default和Max --> <effort>Low</effort> <!-- Low、Medium和High (Low最严格) --> <threshold>Medium</threshold> <failOnError>true</failOnError> <includeTests>true</includeTests> <!--findbugs需要忽略的错误的配置文件--> <!-- <excludeFilterFile>compile.bat</excludeFilterFile> --> </configuration> <executions> <execution> <id>run-findbugs</id> <!-- 在install 阶段触发执行findbugs检查，比如执行 mvn clean package--> <phase>install</phase> <goals> <goal>check</goal> </goals> </execution> </executions> </plugin> <!--检测代码覆盖率的插件 jacoco--> <plugin> <groupId>org.jacoco</groupId> <artifactId>jacoco-maven-plugin</artifactId> <version>0.7.8</version> <executions> <execution> <id>prepare-agent</id> <goals> <goal>prepare-agent</goal> </goals> </execution> <execution> <id>check</id> <goals> <goal>check</goal> </goals> </execution> <execution> <id>report</id> <phase>prepare-package</phase> <goals> <goal>report</goal> </goals> </execution> </executions> <!-- Configuration 里面写配置信息 --> <configuration> <!-- rules里面指定覆盖规则 --> <rules> <rule implementation="org.jacoco.maven.RuleConfiguration"> <element>BUNDLE</element> <limits> <!-- 指定方法覆盖到80% --> <limit implementation="org.jacoco.report.check.Limit"> <counter>METHOD</counter> <value>COVEREDRATIO</value> <minimum>0.50</minimum> </limit> <!-- 指定指令覆盖到80% --> <limit implementation="org.jacoco.report.check.Limit"> <counter>INSTRUCTION</counter> <value>COVEREDRATIO</value> <minimum>0.40</minimum> </limit> <!-- 指定行覆盖到80% --> <limit implementation="org.jacoco.report.check.Limit"> <counter>LINE</counter> <value>COVEREDRATIO</value> <minimum>0.40</minimum> </limit> <!-- 指定类覆盖到100%，不能遗失任何类 --> <limit implementation="org.jacoco.report.check.Limit"> <counter>CLASS</counter> <value>MISSEDCOUNT</value> <maximum>0</maximum> </limit> </limits> </rule> </rules> </configuration> </plugin> </plugins> </build> <reporting> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-checkstyle-plugin</artifactId> <version>3.0.0</version> </plugin> </plugins> </reporting> <properties> <checkstyle.config.location>checkstyle.xml</checkstyle.config.location> <!--这里指定了代码规范检查的规则文件，已经位置在项目根目录下--> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <compiler.source>1.7</compiler.source> <compiler.target>1.7</compiler.target> <junit.version>4.12</junit.version> </properties> <dependencies> <dependency> <groupId>org.jacoco</groupId> <artifactId>jacoco-maven-plugin</artifactId> <version>0.7.8</version> </dependency> <dependency> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-clean-plugin</artifactId> <version>2.5</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>${junit.version}</version> <scope>test</scope> </dependency> </dependencies> </project>
（2）配置checkstyle的规则定义文件
在项目根目录下添加checkstyle.xml文件，内容如下
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE module PUBLIC "-//Puppy Crawl//DTD Check Configuration 1.3//EN" "http://www.puppycrawl.com/dtds/configuration_1_3.dtd"> <!-- This configuration file was written by the eclipse-cs plugin configuration editor --> <!-- Checkstyle-Configuration: JENKIS Description: none -->
<!-- 以下所有 module 指定的name，没有添加property的配置，都是选择官方网站上默认的配置参数。--> <module name="Checker"> <!--<property name="severity" value="warning"/> 这条注释使得所有的错误都变成warning,不影响构建结果-->
<module name="TreeWalker">
<!--对方法的注释，这里表示必须注释每一个方法，可以不对方法里面的参数进行注释 --> <module name="JavadocMethod"> <property name="scope" value="puplic"/> <property name="allowUndeclaredRTE" value="true"/> <property name="allowMissingParamTags" value="true"/> <property name="allowMissingJavadoc" value="false"/> </module>
<!-- 对常量的命名规范--> <module name="ConstantName"/> <module name="LocalFinalVariableName"/> <module name="MemberName"/>
<!-- 方法名的命名规范--> <module name="MethodName"/>
<!--包名的命名规范 --> <module name="PackageName"/>
<!-- 静态变量的命名规范--> <module name="StaticVariableName"/>
<!-- 类名的命名规范--> <module name="TypeName"/> <module name="AvoidStarImport"/> <module name="IllegalImport"/> <module name="RedundantImport"/> <module name="UnusedImports"/> <module name="LineLength"/> <module name="MethodLength"/> <module name="ParameterNumber"> <property name="tokens" value="METHOD_DEF"/> </module> <module name="EmptyForIteratorPad"/> <module name="GenericWhitespace"/> <module name="MethodParamPad"/> <module name="NoWhitespaceAfter"/> <module name="NoWhitespaceBefore"/> <module name="OperatorWrap"/> <module name="ParenPad"/> <module name="TypecastParenPad"/> <module name="WhitespaceAfter"/> <module name="WhitespaceAround"/> <module name="ModifierOrder"/> <module name="RedundantModifier"/> <module name="AvoidNestedBlocks"/> <module name="EmptyBlock"/>
<!-- 左边花括号的位置，必须另起一行--> <module name="LeftCurly"> <property name="option" value="nl"/> <property name="tokens" value="ANNOTATION_DEF,LITERAL_CATCH,CLASS_DEF,CTOR_DEF,LITERAL_DO,LITERAL_ELSE,ENUM_CONSTANT_DEF,ENUM_DEF,LITERAL_FINALLY,LITERAL_FOR,LITERAL_IF,INTERFACE_DEF,METHOD_DEF,LITERAL_SWITCH,LITERAL_SYNCHRONIZED,LITERAL_TRY,LITERAL_WHILE"/> </module> <module name="NeedBraces"> <property name="tokens" value="LITERAL_DO,LITERAL_ELSE,LITERAL_FOR,LITERAL_IF,LITERAL_WHILE"/> </module>
<!-- 右边花括号的位置，必须独占一行--> <module name="RightCurly"> <property name="option" value="alone"/> <property name="tokens" value="LITERAL_CATCH,LITERAL_ELSE,LITERAL_FINALLY,LITERAL_IF,LITERAL_TRY"/> </module> <module name="AvoidInlineConditionals"/> <module name="EmptyStatement"/> <module name="EqualsHashCode"/> <module name="HiddenField"> <property name="tokens" value="VARIABLE_DEF"/> <property name="ignoreConstructorParameter" value="true"/> <property name="ignoreSetter" value="true"/> <property name="setterCanReturnItsClass" value="true"/> <property name="ignoreAbstractMethods" value="true"/> </module> <module name="IllegalInstantiation"/> <module name="InnerAssignment"/>
<!-- 魔术数字的配置--> <module name="MagicNumber"> <property name="ignoreHashCodeMethod" value="true"/> <property name="ignoreAnnotation" value="true"/> <property name="ignoreFieldDeclaration" value="true"/> <property name="constantWaiverParentToken" value="DIV,MINUS,UNARY_MINUS,STAR,PLUS,UNARY_PLUS,ASSIGN,ARRAY_INIT,EXPR,ELIST,METHOD_CALL,LITERAL_NEW,TYPECAST"/> </module> <module name="MissingSwitchDefault"/> <module name="SimplifyBooleanExpression"/> <module name="SimplifyBooleanReturn"/> <module name="FinalClass"/> <module name="HideUtilityClassConstructor"/> <module name="InterfaceIsType"/> <module name="VisibilityModifier"/> <module name="ArrayTypeStyle"/> <module name="TodoComment"/> <module name="UpperEll"/> <module name="LeftCurly"> <property name="option" value="nl"/> </module> <module name="RightCurly"> <property name="option" value="alone_or_singleline"/> <property name="tokens" value="LITERAL_CATCH,LITERAL_ELSE,LITERAL_FINALLY,LITERAL_IF,LITERAL_TRY"/> </module> <module name="LeftCurly"> <property name="option" value="nl"/> <property name="tokens" value="ANNOTATION_DEF,LITERAL_CATCH,CLASS_DEF,CTOR_DEF,LITERAL_DO,LITERAL_ELSE,ENUM_CONSTANT_DEF,ENUM_DEF,LITERAL_FINALLY,LITERAL_FOR,LITERAL_IF,INTERFACE_DEF,METHOD_DEF,LITERAL_SWITCH,LITERAL_SYNCHRONIZED,LITERAL_TRY,LITERAL_WHILE"/> </module> <module name="EmptyLineSeparator"> <property name="tokens" value="CLASS_DEF,CTOR_DEF,ENUM_DEF,IMPORT,INSTANCE_INIT,INTERFACE_DEF,METHOD_DEF,PACKAGE_DEF,STATIC_INIT,VARIABLE_DEF"/> </module> </module> <module name="Translation"/> <module name="FileLength"/> </module>
（3）执行checkstyle：check命令，完成代码规范检查
mvn checkstyle:check #这条命令发现有错误时会使得构建失败
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