Pmd ant script gives java.lang.NoClassDefFoundError: org/jax

Question

<?xml version="1.0" encoding="UTF-8"?>
<project name="Example" default="pmd" basedir=".">
<property name="PMD.home" location="D:SoftwareJavapmd-4.2.5"/>
<path id="PMD.lib"> 
    <fileset dir="${PMD.home}lib"> 
            <include name="*.jar" /> 
    </fileset> 
    <!--pathelement location="${PMD.home}/lib/jaxen-1.1.1.jar" -->
</path> 
<echo>${PMD.home}lib</echo>
<taskdef name="pmd" classname="net.sourceforge.pmd.ant.PMDTask" > 
    <classpath refid="PMD.lib" /> 
</taskdef> 
<target name="pmd">
<taskdef name="pmd" classname="net.sourceforge.pmd.ant.PMDTask" classpathref="PMD.lib"    />       
<echo>${PMD.home}binpmd-rules.xml</echo>
<pmd> 
<ruleset>${PMD.home}binpmd-rules.xml</ruleset>
<formatter type="html" toFile="pmd_report_ant9.html"  />
<fileset dir="C:Documents and Settingstwarsieclipse3_5tw1Example">
<include name="***.java"/>
 </fileset>
 </pmd>
</target>
</project>

我正在尝试运行上面的蚂蚁脚本来执行 PMD 规则集 pmd 规则.xml但我收到以下错误。

 pmd:
 [echo] D:SoftwareJavapmd-4.2.5binpmd-rules.xml
  [pmd] Using the normal ClassLoader
  [pmd] Adding classpath entry: <D:SoftwareJavapmd-4.2.5bin>
  [pmd] Sending a report to file = D:SoftwareJavapmd-4.2.5binpmd_report
  _ant9.html; renderer = html
 BUILD FAILED
 java.lang.NoClassDefFoundError: org/jaxen/JaxenException
    at java.lang.Class.getDeclaredConstructors0(Native Method)
    at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
    at java.lang.Class.getConstructor0(Class.java:2699)
    at java.lang.Class.newInstance0(Class.java:326)
    at java.lang.Class.newInstance(Class.java:308)
    at net.sourceforge.pmd.RuleSetFactory.parseSingleRuleNode(RuleSetFactory
  .java:309)
    at net.sourceforge.pmd.RuleSetFactory.parseRuleNode(RuleSetFactory.java:
 253)
    at net.sourceforge.pmd.RuleSetFactory.parseRuleSetNode(RuleSetFactory.ja
 va:209)
    at net.sourceforge.pmd.RuleSetFactory.createSingleRuleSet(RuleSetFactory
.java:135)
    at net.sourceforge.pmd.RuleSetFactory.createRuleSets(RuleSetFactory.java
:85)
    at net.sourceforge.pmd.ant.PMDTask.doTask(PMDTask.java:220)
    at net.sourceforge.pmd.ant.PMDTask.execute(PMDTask.java:334)
    at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
 java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.jav
a:106)
    at org.apache.tools.ant.Task.perform(Task.java:348)
    at org.apache.tools.ant.Target.execute(Target.java:357)
    at org.apache.tools.ant.Target.performTasks(Target.java:385)
    at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1337)
    at org.apache.tools.ant.Project.executeTarget(Project.java:1306)
    at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExe
cutor.java:41)
    at org.apache.tools.ant.Project.executeTargets(Project.java:1189)
    at org.apache.tools.ant.Main.runBuild(Main.java:758)
    at org.apache.tools.ant.Main.startAnt(Main.java:217)
    at org.apache.tools.ant.launch.Launcher.run(Launcher.java:257)
    at org.apache.tools.ant.launch.Launcher.main(Launcher.java:104)

你能告诉我我错过了什么吗？甚至 jaxen-1.1.1.jar 也在 lib 目录中。但它显示错误。我在蚂蚁脚本中缺少某些内容吗？

Answer 1

将 pmd.home\lib 中的所有文件复制到 ant.home\lib 文件夹

pmd.home 是你的 pmd 目录：在您的情况下：D：\Software\Java\pmd-4.2.5ant.home 是你的 ant 主目录：假设你使用的是 netbeans，它将是 netbeans\java\ant

注意重复的罐子或重复的版本(尤其是蚂蚁(。

然后，再次运行该命令。希望有帮助。

Answer 2

在 pmd 5.0.3 中，这对我有用：

<property name="pmd.dir" value="${otherSoftware}/pmd-5.0.3" />
<path id="pmd.classpath">
    <fileset dir="${pmd.dir}lib"> 
        <include name="*.jar" /> 
    </fileset>
</path>
<taskdef name="pmd" classname="net.sourceforge.pmd.ant.PMDTask" classpathref="pmd.classpath" />
<taskdef name="cpd" classname="net.sourceforge.pmd.cpd.CPDTask" classpathref="pmd.classpath" />

注意：pmd-5.0.3/lib 包含 jaxen.jar！

Answer 3

我想将

<!--pathelement location="${PMD.home}/lib/jaxen-1.1.1.jar" -->更改为<pathelement location="${PMD.home}/lib/jaxen-1.1.1.jar" />就可以了？还是您所有的库都已加载？请尝试ant -verbose。

Answer 4

我在 4.2.6 版中遇到了完全相同的问题。Jaxen JAR 文件位于 ant 查找 PMD 特定 JAR 文件的目录中似乎很重要。对我来说，以下作品，其中所有(四个(PMD jar文件都位于${pmd.home}中。

<property name="pmd.home" value="../../external/pmd" />
<target name="pmd">
    <taskdef name="pmd" classname="net.sourceforge.pmd.ant.PMDTask" classpath="${pmd.home}/pmd-4.2.6.jar"/> 
    <pmd shortFilenames="true">
        <ruleset>basic</ruleset>
        <formatter type="xml" toFile="${report.dir}/pmd.xml"/>
        <fileset dir="${src.dir}">
            <include name="**/*.java"/>
        </fileset>
    </pmd>
</target>

希望这有帮助！