checkstyle.xml

<?xml version="1.0"?>
<!DOCTYPE module PUBLIC
        "-//Puppy Crawl//DTD Check Configuration 1.2//EN"
        "http://www.puppycrawl.com/dtds/configuration_1_2.dtd">
<!-- 对于所有的模块来书,如果有这个模块则说明检测这一项,没有则不检测这一项 --><!-- 所有的模块中,其ROOT必须为Checker -->

<module name="Checker">

    <property name="charset" value="UTF-8"/>

    <property name="severity" value="warning"/>

    <module name="TreeWalker">

        <!-- Checks for imports                              -->
        <!-- See http://checkstyle.sf.net/config_import.html -->

        <module name="IllegalImport"/>
        <module name="RedundantImport"/>
        <module name="UnusedImports">
            <property name="processJavadoc" value="true"/>
        </module>

        <module name="FallThrough"/>

        <!-- Checks for whitespace                               -->
        <!-- See http://checkstyle.sf.net/config_whitespace.html -->

        <module name="GenericWhitespace"/>
        <module name="EmptyForIteratorPad"/>
        <module name="MethodParamPad"/>
        <module name="NoWhitespaceAfter"/>
        <module name="NoWhitespaceBefore"/>
        <module name="OperatorWrap">
            <property name="option" value="NL"/>
            <property name="tokens"
                      value="BAND, BOR, BSR, BXOR, DIV, EQUAL, GE, GT, LAND, LE, LITERAL_INSTANCEOF, LOR, LT, MINUS, MOD, NOT_EQUAL, PLUS, QUESTION, SL, SR, STAR, METHOD_REF "/>
        </module>
        <module name="ParenPad"/>
        <module name="TypecastParenPad"/>
        <module name="WhitespaceAfter"/>

        <module name="WhitespaceAround">
            <property name="allowEmptyConstructors" value="true"/>
            <property name="allowEmptyMethods" value="true"/>
            <property name="allowEmptyTypes" value="true"/>
            <property name="allowEmptyLoops" value="true"/>
        </module>

        <!-- Checks for blocks. You know, those {}'s         -->
        <!-- See http://checkstyle.sf.net/config_blocks.html -->
        <module name="AvoidNestedBlocks"/>
        <module name="LeftCurly"/>
        <module name="RightCurly"/>
        <module name="NeedBraces">
            <property name="tokens"
                      value="LITERAL_DO, LITERAL_IF, LITERAL_ELSE, LITERAL_FOR, LITERAL_WHILE"/>
        </module>

        <!-- Checks for Naming Conventions. -->
        <!-- See http://checkstyle.sf.net/config_naming.html -->
        <!-- 确省必须以Abstract开始或者以Factory结束 -->
        <module name="PackageName">
            <property name="format" value="^[a-z]+(\.[a-z][a-z0-9]*)*$"/>
        </module>
        <module name="TypeName">
        </module>
        <module name="MemberName">
        </module>
        <module name="MethodName">
        </module>
        <module name="ParameterName">
            <property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>
        </module>
        <module name="LocalVariableName">
            <property name="tokens" value="VARIABLE_DEF"/>
            <property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>
        </module>
        <module name="ClassTypeParameterName">
            <property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)"/>
        </module>
        <module name="MethodTypeParameterName">
            <property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)"/>

        </module>
        <module name="InterfaceTypeParameterName">
            <property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)"/>
        </module>

        <!-- Checks for Size Violations. -->
        <!-- See http://checkstyle.sf.net/config_sizes.html -->
        <!-- 检查方法内可执行语句的个数,确省为30行 -->
        <!--
        <module name="ExecutableStatementCount">
        <property name="max" value="30"/>
        </module>
        -->
        <!-- 文件的最大行数,缺省为1500 -->
        <!--<module name="FileLength">-->
        <!--<property name="max" value="2000" />-->
        <!--</module>-->
        <!-- 每行的最大字符数,缺省为80 -->
        <module name="LineLength">
            <property name="max" value="200"/>
            <property name="ignorePattern"
                      value="^package.*|^import.*|a href|href|http://|https://|ftp://"/>
        </module>

        <!-- 方法的最大行数,缺省为150 -->
        <module name="MethodLength">
            <property name="max" value="200"/>
            <!-- 统计时是否包括空行和以//开始的注释,缺省为统计(true)-->
            <property name="countEmpty" value="false"/>
        </module>
        <!-- 匿名类的最大行数,缺省为20 -->
        <module name="AnonInnerLength">
            <property name="max" value="60"/>
        </module>
        <!-- 检查方法和构造子参数的最大个数,缺省为7 -->
        <module name="ParameterNumber"/>

        <!--缩进规则-->
        <module name="Indentation">
            <property name="basicOffset" value="4"/>
            <property name="braceAdjustment" value="0"/>
            <property name="caseIndent" value="4"/>
            <property name="throwsIndent" value="8"/>
            <property name="lineWrappingIndentation" value="4"/>
            <property name="arrayInitIndent" value="4"/>
        </module>
        <!--名称中缩写,驼峰规则-->
        <module name="AbbreviationAsWordInName">
            <property name="ignoreFinal" value="false"/>
            <property name="allowedAbbreviationLength" value="1"/>
        </module>

        <module name="CustomImportOrder">
            <property name="sortImportsInGroupAlphabetically" value="true"/>
            <property name="separateLineBetweenGroups" value="true"/>
            <property name="customImportOrderRules" value="STATIC###THIRD_PARTY_PACKAGE"/>
        </module>

        <module name="MethodName">
            <property name="format" value="^[a-z][a-z0-9][a-zA-Z0-9_]*$"/>
        </module>
    </module>
</module>