PMD 与 Maven - 如何禁用规则集中的一条规则？

我通过 Maven 2 运行 PMD。现在我已经准备好所有规则集来查看生成的内容（请参见下面的代码）。我正在经历并修复对我来说有意义的事情。但是，在某些情况下，例如在“优化”规则集中，我想保留规则集，但是仅禁用规则集中的规则之一。就我而言，我想禁用“AvoidInstantiatingObjectsInLoopss”规则。

这是我的 pom.xml 的报告部分

<reporting>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-jxr-plugin</artifactId>
            <version>2.3</version>
        </plugin>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-pmd-plugin</artifactId>
            <version>2.6</version>
            <configuration>
                <linkXref>true</linkXref>
                <sourceEncoding>utf-8</sourceEncoding>
                <minimumTokens>${pmd.minimumTokens}</minimumTokens>
                <failOnViolation>${pmd.failOnViolation}</failOnViolation>
                <targetJdk>${projectTargetJdk}</targetJdk>

                <rulesets>
                    <!-- See the FAQ here: http://maven.apache.org/maven-1.x/plugins/pmd/faq.html -->
                    <!-- See the rule sets here: http://pmd.sourceforge.net/ (menu on the left has a Rule Sets section -->
                    <!-- Unused rule sets -->
                    <!-- <ruleset>/rulesets/naming.xml</ruleset> -->

                    <!-- Unable to find rule sets -->
                    <!-- <ruleset>/rulesets/emptycode.xml</ruleset> -->
                    <!-- <ruleset>rulesets/comments.xml</ruleset> -->
                    <!-- <ruleset>/rulesets/unnecessary.xml</ruleset> -->
                    <!-- <ruleset>/rulesets/logging.xml</ruleset> -->

                    <!-- used rule sets -->
                    <!-- http://pmd.sourceforge.net/rules/java/basic.html -->
                    <ruleset>/rulesets/basic.xml</ruleset>
                    <!-- http://pmd.sourceforge.net/rules/java/braces.html -->
                    <ruleset>/rulesets/braces.xml</ruleset>
                    <!-- http://pmd.sourceforge.net/rules/java/clone.html -->
                    <ruleset>/rulesets/clone.xml</ruleset>
                    <!-- http://pmd.sourceforge.net/rules/java/codesize.html -->
                    <ruleset>/rulesets/codesize.xml</ruleset>
                    <!-- http://pmd.sourceforge.net/rules/java/controversial.html -->
                    <ruleset>/rulesets/controversial.xml</ruleset>
                    <!-- http://pmd.sourceforge.net/rules/java/coupling.html -->
                    <ruleset>/rulesets/coupling.xml</ruleset>
                    <!-- http://pmd.sourceforge.net/rules/java/design.html -->
                    <ruleset>/rulesets/design.xml</ruleset>
                    <!-- http://pmd.sourceforge.net/rules/java/finalizers.html -->
                    <ruleset>/rulesets/finalizers.xml</ruleset>
                    <!-- http://pmd.sourceforge.net/rules/java/imports.html -->
                    <ruleset>/rulesets/imports.xml</ruleset>
                    <!-- http://pmd.sourceforge.net/rules/java/j2ee.html -->
                    <ruleset>/rulesets/j2ee.xml</ruleset>
                    <!-- http://pmd.sourceforge.net/rules/java/junit.html -->
                    <ruleset>/rulesets/junit.xml</ruleset>
                    <!-- http://pmd.sourceforge.net/rules/java/javabeans.html -->
                    <ruleset>/rulesets/javabeans.xml</ruleset>
                    <!-- http://pmd.sourceforge.net/rules/java/migrating.html -->
                    <ruleset>/rulesets/migrating.xml</ruleset>
                    <!-- http://pmd.sourceforge.net/rules/java/optimizations.html -->
                    <ruleset>/rulesets/optimizations.xml</ruleset>
                    <!-- http://pmd.sourceforge.net/rules/java/strictexception.html -->
                    <ruleset>/rulesets/strictexception.xml</ruleset>
                    <!-- http://pmd.sourceforge.net/rules/java/strings.html -->
                    <ruleset>/rulesets/strings.xml</ruleset>
                    <!-- http://pmd.sourceforge.net/rules/java/sunsecure.html -->
                    <ruleset>/rulesets/sunsecure.xml</ruleset>
                    <!-- http://pmd.sourceforge.net/rules/java/typeresolution.html -->
                    <ruleset>/rulesets/typeresolution.xml</ruleset>
                    <!-- http://pmd.sourceforge.net/rules/java/unusedcode.html -->
                    <ruleset>/rulesets/unusedcode.xml</ruleset>
                </rulesets>
            </configuration>
        </plugin>
    </plugins>
</reporting>

规则的定义及其激活位于规则集文件中。 由于您在“rulesets”文件夹中拥有文件的副本，因此只需删除或注释规则集文件上包含规则引用的节点即可。 在本例中，“AvoidInstantiatingObjectsInLoops”(net.sourceforge.pmd.rules.optimization.AvoidInstantiatingObjectsInLoops) 是一个优化规则，因此它可能位于“/rulesets/optimizations.xml”中。

只需编辑文件，查找包含的规则，然后注释或删除相应的规则节点即可。

我不知道您的文件的内容，因此您可能多次包含该规则。