我使用官方文档（http://pmd.sourceforge.net/pmd-5.1.0/howtowritearule.html）
添加了自定义PMD规则规则：
package com.comp.www.lty.awards.service.pmd;
import net.sourceforge.pmd.lang.ast.*;
import net.sourceforge.pmd.lang.java.ast.*;
import net.sourceforge.pmd.lang.java.rule.*;
public class WhileLoopsMustUseBracesRule extends AbstractJavaRule {
public Object visit(ASTWhileStatement node, Object data) {
Node firstStmt = node.jjtGetChild(1);
if (!hasBlockAsFirstChild(firstStmt)) {
addViolation(data, node);
}
return super.visit(node,data);
}
private boolean hasBlockAsFirstChild(Node node) {
return (node.jjtGetNumChildren() != 0 && (node.jjtGetChild(0) instanceof ASTBlock));
}
}
这是我的规则集xml文件：
<?xml version="1.0"?>
<ruleset name="My custom rules"
xmlns="http://pmd.sourceforge.net/ruleset/2.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://pmd.sourceforge.net/ruleset/2.0.0 http://pmd.sourceforge.net/ruleset_2_0_0.xsd">
<description>While loop desc</description>
<rule name="WhileLoopsMustUseBracesRule"
message="Avoid using 'while' statements without curly braces"
class="com.comp.www.lty.awards.service.pmd.WhileLoopsMustUseBracesRule">
<description>
Avoid using 'while' statements without using curly braces
</description>
<priority>3</priority>
<example>
<![CDATA[
public void doSomething() {
while (true)
x++;
}
]]>
</example>
</rule>
</ruleset>
我正在使用mvn来运行这些pmd规则。当我尝试使用pmd jar中的现有规则时工作正常，但每当我尝试使用上面的自定义规则时，我都会收到ClassNotFoundException。
堆栈跟踪：
java.lang.ClassNotFoundException: com.comp.www.lty.awards.service.pmd.WhileLoopsMustUseBracesRule
at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:50)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:244)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:230)
at net.sourceforge.pmd.RuleSetFactory.parseSingleRuleNode(RuleSetFactory.java:377)
at net.sourceforge.pmd.RuleSetFactory.parseRuleNode(RuleSetFactory.java:291)
at net.sourceforge.pmd.RuleSetFactory.parseRuleSetNode(RuleSetFactory.java:242)
at net.sourceforge.pmd.RuleSetFactory.createRuleSet(RuleSetFactory.java:176)
at net.sourceforge.pmd.RuleSetFactory.createRuleSet(RuleSetFactory.java:171)
at net.sourceforge.pmd.RuleSetFactory.parseRuleSetReferenceNode(RuleSetFactory.java:331)
at net.sourceforge.pmd.RuleSetFactory.parseRuleNode(RuleSetFactory.java:289)
at net.sourceforge.pmd.RuleSetFactory.parseRuleSetNode(RuleSetFactory.java:242)
at net.sourceforge.pmd.RuleSetFactory.createRuleSet(RuleSetFactory.java:176)
at net.sourceforge.pmd.RuleSetFactory.createRuleSet(RuleSetFactory.java:171)
at net.sourceforge.pmd.RuleSetFactory.createRuleSets(RuleSetFactory.java:135)
at net.sourceforge.pmd.RuleSetFactory.createRuleSets(RuleSetFactory.java:119)
at net.sourceforge.pmd.RulesetsFactoryUtils.getRuleSets(RulesetsFactoryUtils.java:31)
at net.sourceforge.pmd.processor.AbstractPMDProcessor.createRuleSets(AbstractPMDProcessor.java:54)
at net.sourceforge.pmd.processor.MultiThreadProcessor.processFiles(MultiThreadProcessor.java:38)
at net.sourceforge.pmd.PMD.processFiles(PMD.java:352)
at org.apache.maven.plugin.pmd.PmdReport.executePmd(PmdReport.java:377)
at org.apache.maven.plugin.pmd.PmdReport.executePmdWithClassloader(PmdReport.java:280)
at org.apache.maven.plugin.pmd.PmdReport.canGenerateReport(PmdReport.java:254)
at org.apache.maven.reporting.AbstractMavenReport.execute(AbstractMavenReport.java:119)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
at org.apache.maven.lifecycle.internal.MojoExecutor.executeForkedExecutions(MojoExecutor.java:365)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:199)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
at org.codehaus.classworlds.Launcher.main(Launcher.java:47)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)
虽然不是理想的解决方案，但即使我花时间在pmd jar（Custom Java PMD rule: Can't find the class CustomRule）中包含此自定义规则类文件，但这也无济于事。
的pom.xml： http://maven.apache.org/xsd/maven-4.0.0.xsd"> 4.0.0 org.springframework.boot 弹簧引导启动父 1.4.0.RELEASE LTY-奖项服务 com.comp.www 战争 LTY-奖项服务 Spring Boot Service示例 1.0-SNAPSHOT http://maven.apache.org 1.8
<findbugs-maven-plugin.version>3.0.3</findbugs-maven-plugin.version>
<findbugs.include.filter.location>buildtools/findbugs/include.xml</findbugs.include.filter.location>
<findbugs.exclude.filter.location>buildtools/findbugs/exclude.xml</findbugs.exclude.filter.location>
<maven-pmd-plugin.version>3.5</maven-pmd-plugin.version>
<pmd.version>5.3.2</pmd.version>
<pmdRule.version>5.1.0</pmdRule.version>
<pmd.ruleset.location>buildtools/pmd-rules/ltyawardsservicepmd.xml</pmd.ruleset.location>
<pmd.skip>false</pmd.skip>
<pmd.typeResolution>true</pmd.typeResolution>
<!-- spring boot -->
<debug.port>5000</debug.port>
<run.jvmArguments>-Dspring.profiles.active=dev -Dapplication.home=. -Dapplication.name=${project.name}
-Dapplication.environment=dev -Dproject.name=${project.name} -Xdebug
-Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=${debug.port}
</run.jvmArguments>
<error-inspector.version>0.1.9</error-inspector.version>
<platform-diagnostics.version>0.0.43</platform-diagnostics.version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Camden.SR6</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>net.sourceforge.pmd</groupId>
<artifactId>pmd</artifactId>
<version>${pmdRule.version}</version>
<scope>system</scope>
<systemPath>/Users/babu/.m2/repository/net/sourceforge/pmd/pmd/5.1.0/test.jar</systemPath>
</dependency>
</dependencies>
<build>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
</resources>
<finalName>${project.artifactId}</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>2.10</version>
<executions>
<execution>
<id>copy</id>
<phase>package</phase>
<goals>
<goal>copy</goal>
</goals>
<configuration>
<artifactItems>
<artifactItem>
<groupId>com.comp.prime.errorcatalog</groupId>
<artifactId>error-inspector</artifactId>
<version>${error-inspector.version}</version>
<overWrite>false</overWrite>
<outputDirectory>${project.build.directory}/error-inspect</outputDirectory>
<destFileName>inspect.jar</destFileName>
</artifactItem>
<artifactItem>
<groupId>com.comp.www.platform</groupId>
<artifactId>platform-diagnostics-main</artifactId>
<overWrite>false</overWrite>
<outputDirectory>${project.build.directory}/error-inspect/lib</outputDirectory>
<destFileName>platform-diagnostics-main.jar</destFileName>
</artifactItem>
</artifactItems>
<overWriteReleases>false</overWriteReleases>
<overWriteSnapshots>true</overWriteSnapshots>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-enforcer-plugin</artifactId>
<version>1.0</version>
<executions>
<execution>
<id>enforce-versions</id>
<goals>
<goal>enforce</goal>
</goals>
<configuration>
<rules>
<requireMavenVersion>
<message>.*** ERROR: Detected Maven version ${maven.version}, We need Maven 3.0.3 or
higher ***.
</message>
<version>[3.0.3,)</version>
</requireMavenVersion>
<requireJavaVersion>
<message>.*** ERROR: Detected JDK version ${java.version}, We need JDK
${project.jdk.version} or higher ***.
</message>
<version>${project.jdk.version}</version>
</requireJavaVersion>
</rules>
</configuration>
</execution>
<execution>
<id>enforce-dont-exist</id>
<goals>
<goal>enforce</goal>
</goals>
<configuration>
<rules>
<requireFilesDontExist>
<files>
<file>${project.basedir}/src/main/scala</file>
</files>
</requireFilesDontExist>
</rules>
<fail>true</fail>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>${project.jdk.version}</source>
<target>${project.jdk.version}</target>
<encoding>UTF-8</encoding>
</configuration>
<version>3.3</version>
</plugin>
<plugin>
<groupId>net.alchim31.maven</groupId>
<artifactId>scala-maven-plugin</artifactId>
<version>${scala-maven-plugin.version}</version>
<executions>
<execution>
<id>scala-compile-first</id>
<phase>process-resources</phase>
<goals>
<goal>add-source</goal>
<goal>compile</goal>
</goals>
</execution>
<execution>
<id>scala-test-compile</id>
<phase>process-test-resources</phase>
<goals>
<goal>testCompile</goal>
</goals>
</execution>
</executions>
<configuration>
<scalaCompatVersion>${scala.major.minor.version}</scalaCompatVersion>
<jvmArgs>
<jvmArg>-Xms512m</jvmArg>
<jvmArg>-Xmx2048m</jvmArg>
</jvmArgs>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.19</version>
<configuration>
<skipTests>true</skipTests>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-pmd-plugin</artifactId>
<version>${maven-pmd-plugin.version}</version>
<dependencies>
<dependency>
<groupId>net.sourceforge.pmd</groupId>
<artifactId>pmd-core</artifactId>
<version>${pmd.version}</version>
</dependency>
<dependency>
<groupId>net.sourceforge.pmd</groupId>
<artifactId>pmd-java</artifactId>
<version>${pmd.version}</version>
</dependency>
<dependency>
<groupId>WhileLoopsMustUseBracesRule</groupId>
<artifactId>pmd.ruleset</artifactId>
<version>0.0.1-SNAPSHOT</version>
<scope>system</scope>
<systemPath>/Users/babu/Downloads/cache.jar</systemPath>
</dependency>
<dependency>
<groupId>com.comp.www.platform</groupId>
<artifactId>platform-build-tools</artifactId>
<version>${platform-build-tools.version}</version>
</dependency>
</dependencies>
<configuration>
<targetJdk>${project.jdk.version}</targetJdk>
<includeTests>true</includeTests>
<skip>${pmd.skip}</skip>
<sourceEncoding>${project.sourceEncoding}</sourceEncoding>
<rulesets>
<ruleset>${pmd.ruleset.location}</ruleset>
</rulesets>
</configuration>
<executions>
<execution>
<id>cpd-report</id>
<phase>test-compile</phase>
<goals>
<goal>check</goal>
<goal>cpd-check</goal>
<goal>pmd</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
<!--<reporting>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jxr-plugin</artifactId>
<version>2.3</version>
</plugin>
</plugins>
</reporting>-->
Here test.jar is my jar bundled (i.e. pmd jar unbundled, added class file & ruleset and again bundled it as test.jar). Although this is not how I want to use the rule. But if there is a better way to use pmd jar as it is & add a mvn dependency for new rule that is the ideal solution I'm looking for. Thanks!
答案 0 :(得分：1)
当PMD运行时，您需要将自定义规则jar添加到类路径中。您应该将自定义PMD规则捆绑在自己的Maven依赖项中，然后通过向插件配置添加依赖项，将其包含在PMD插件类路径中，如下所示：
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-pmd-plugin</artifactId>
<version>3.7</version>
<dependencies>
<dependency>
<groupId>com.foo.bar</groupId>
<artifactId>my-custom-pmd-rule</artifactId>
<version>1.0.0</version>
</dependency>
</dependencies>
...
</plugin>
有关插件类加载的更多信息，请参阅this page。看看它是怎么说的：
请注意，插件类加载器既不包含当前项目的依赖项，也不包含构建输出
尝试将pom.xml文件更改为以下内容。请注意，我将test.jar依赖项移动到插件依赖项，以便它将被加载到插件的类路径中。请注意，您不必将规则与PMD捆绑在一起。您只需要将规则打包在自己的jar中，并将其包含在插件依赖项部分中。
<findbugs-maven-plugin.version>3.0.3</findbugs-maven-plugin.version>
<findbugs.include.filter.location>buildtools/findbugs/include.xml</findbugs.include.filter.location>
<findbugs.exclude.filter.location>buildtools/findbugs/exclude.xml</findbugs.exclude.filter.location>
<maven-pmd-plugin.version>3.5</maven-pmd-plugin.version>
<pmd.version>5.3.2</pmd.version>
<pmdRule.version>5.1.0</pmdRule.version>
<pmd.ruleset.location>buildtools/pmd-rules/ltyawardsservicepmd.xml</pmd.ruleset.location>
<pmd.skip>false</pmd.skip>
<pmd.typeResolution>true</pmd.typeResolution>
<!-- spring boot -->
<debug.port>5000</debug.port>
<run.jvmArguments>-Dspring.profiles.active=dev -Dapplication.home=. -Dapplication.name=${project.name}
-Dapplication.environment=dev -Dproject.name=${project.name} -Xdebug
-Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=${debug.port}
</run.jvmArguments>
<error-inspector.version>0.1.9</error-inspector.version>
<platform-diagnostics.version>0.0.43</platform-diagnostics.version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Camden.SR6</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
</dependencies>
<build>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
</resources>
<finalName>${project.artifactId}</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>2.10</version>
<executions>
<execution>
<id>copy</id>
<phase>package</phase>
<goals>
<goal>copy</goal>
</goals>
<configuration>
<artifactItems>
<artifactItem>
<groupId>com.comp.prime.errorcatalog</groupId>
<artifactId>error-inspector</artifactId>
<version>${error-inspector.version}</version>
<overWrite>false</overWrite>
<outputDirectory>${project.build.directory}/error-inspect</outputDirectory>
<destFileName>inspect.jar</destFileName>
</artifactItem>
<artifactItem>
<groupId>com.comp.www.platform</groupId>
<artifactId>platform-diagnostics-main</artifactId>
<overWrite>false</overWrite>
<outputDirectory>${project.build.directory}/error-inspect/lib</outputDirectory>
<destFileName>platform-diagnostics-main.jar</destFileName>
</artifactItem>
</artifactItems>
<overWriteReleases>false</overWriteReleases>
<overWriteSnapshots>true</overWriteSnapshots>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-enforcer-plugin</artifactId>
<version>1.0</version>
<executions>
<execution>
<id>enforce-versions</id>
<goals>
<goal>enforce</goal>
</goals>
<configuration>
<rules>
<requireMavenVersion>
<message>.*** ERROR: Detected Maven version ${maven.version}, We need Maven 3.0.3 or
higher ***.
</message>
<version>[3.0.3,)</version>
</requireMavenVersion>
<requireJavaVersion>
<message>.*** ERROR: Detected JDK version ${java.version}, We need JDK
${project.jdk.version} or higher ***.
</message>
<version>${project.jdk.version}</version>
</requireJavaVersion>
</rules>
</configuration>
</execution>
<execution>
<id>enforce-dont-exist</id>
<goals>
<goal>enforce</goal>
</goals>
<configuration>
<rules>
<requireFilesDontExist>
<files>
<file>${project.basedir}/src/main/scala</file>
</files>
</requireFilesDontExist>
</rules>
<fail>true</fail>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>${project.jdk.version}</source>
<target>${project.jdk.version}</target>
<encoding>UTF-8</encoding>
</configuration>
<version>3.3</version>
</plugin>
<plugin>
<groupId>net.alchim31.maven</groupId>
<artifactId>scala-maven-plugin</artifactId>
<version>${scala-maven-plugin.version}</version>
<executions>
<execution>
<id>scala-compile-first</id>
<phase>process-resources</phase>
<goals>
<goal>add-source</goal>
<goal>compile</goal>
</goals>
</execution>
<execution>
<id>scala-test-compile</id>
<phase>process-test-resources</phase>
<goals>
<goal>testCompile</goal>
</goals>
</execution>
</executions>
<configuration>
<scalaCompatVersion>${scala.major.minor.version}</scalaCompatVersion>
<jvmArgs>
<jvmArg>-Xms512m</jvmArg>
<jvmArg>-Xmx2048m</jvmArg>
</jvmArgs>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.19</version>
<configuration>
<skipTests>true</skipTests>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-pmd-plugin</artifactId>
<version>${maven-pmd-plugin.version}</version>
<dependencies>
<dependency>
<groupId>net.sourceforge.pmd</groupId>
<artifactId>pmd-core</artifactId>
<version>${pmd.version}</version>
</dependency>
<dependency>
<groupId>net.sourceforge.pmd</groupId>
<artifactId>pmd-java</artifactId>
<version>${pmd.version}</version>
</dependency>
<dependency>
<groupId>WhileLoopsMustUseBracesRule</groupId>
<artifactId>pmd.ruleset</artifactId>
<version>0.0.1-SNAPSHOT</version>
<scope>system</scope><systemPath>/Users/babu/Downloads/cache.jar</systemPath>
</dependency>
<dependency>
<groupId>com.comp.www.platform</groupId>
<artifactId>platform-build-tools</artifactId>
<version>${platform-build-tools.version}</version>
</dependency>
<dependency>
<groupId>net.sourceforge.pmd</groupId>
<artifactId>pmd</artifactId>
<version>${pmdRule.version}</version>
<scope>system</scope>
<systemPath>/Users/babu/.m2/repository/net/sourceforge/pmd/pmd/5.1.0/test.jar</systemPath>
</dependency>
</dependencies>
<configuration>
<targetJdk>${project.jdk.version}</targetJdk>
<includeTests>true</includeTests>
<skip>${pmd.skip}</skip>
<sourceEncoding>${project.sourceEncoding}</sourceEncoding>
<rulesets>
<ruleset>${pmd.ruleset.location}</ruleset>
</rulesets>
</configuration>
<executions>
<execution>
<id>cpd-report</id>
<phase>test-compile</phase>
<goals>
<goal>check</goal>
<goal>cpd-check</goal>
<goal>pmd</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
<!--<reporting>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jxr-plugin</artifactId>
<version>2.3</version>
</plugin>
</plugins>
</reporting>-->