RE: Exception running findbugs ant task

You have probably already figured this out but you can work around this
issue by setting the findbugs.home system property:

        <findbugs sourcePathRef="source.dirs"
                  auxClasspathRef="aux.classpath"
                  auxAnalyzepathRef="analyze.classpath"
                  onlyAnalyze="com.accelovation.-"
                  effort="max"
                  reportLevel="low"
                  jvmargs="-Xmx512m"
                  debug="false"
                  home="${findbugs}"
                  output="html"
                  styleSheet="${findbugs}/src/xsl/fancy.xsl"
                  outputFile="${global.reports.findbugs}/findbugs.html">
            <systemproperty name="findbugs.home" value="${findbugs}" />
        </findbugs>

Scott

-----Original Message-----
From: findbugs-discuss-bounces@xxxxxxxxxx
[mailto:findbugs-discuss-bounces@xxxxxxxxxx] On Behalf Of Alex Chapman
Sent: Monday, December 25, 2006 5:44 PM
To: findbugs-discuss@xxxxxxxxxxxxxxxxxx
Subject: [FB-Discuss] Exception running findbugs ant task

I'm a new findbugs user. I've installed findbugs-1.1.2 and
successfully used the gui on my project to identify bugs. Now I'm
trying to add it to my ant build, and I get an error.

I've defined the task, and added a findbugs target

        <target name="findbugs">
                <findbugs home="${findbugs.home}"
                        output="xml"
                        outputFile="${findbugs.dir}/findbugs-report.xml"
>
                <sourcePath path="${build.src.dir}" />
                <class location="${build.classes.dir}" />
                </findbugs>
        </target>

but when I run this target I get the following

Buildfile: build.xml

findbugs:
 [findbugs] Running FindBugs...
 [findbugs] Error: The findbugs.home property is not set!
 [findbugs] Exception in thread "main"
java.lang.ExceptionInInitializerError
 [findbugs]     at
edu.umd.cs.findbugs.TextUICommandLine.<init>(TextUICommandLine.java:78)
 [findbugs]     at
edu.umd.cs.findbugs.FindBugs2.main(FindBugs2.java:681)
 [findbugs] Caused by: java.lang.NullPointerException
 [findbugs]     at
edu.umd.cs.findbugs.DetectorFactoryCollection.loadPlugins(DetectorFactor
yCollection.java:250)
 [findbugs]     at
edu.umd.cs.findbugs.DetectorFactoryCollection.ensureLoaded(DetectorFacto
ryCollection.java:214)
 [findbugs]     at
edu.umd.cs.findbugs.DetectorFactoryCollection.instance(DetectorFactoryCo
llection.java:99)
 [findbugs]     at
edu.umd.cs.findbugs.config.ProjectFilterSettings.<init>(ProjectFilterSet
tings.java:93)
 [findbugs]     at
edu.umd.cs.findbugs.config.ProjectFilterSettings.createDefault(ProjectFi
lterSettings.java:110)
 [findbugs]     at
edu.umd.cs.findbugs.config.UserPreferences.<init>(UserPreferences.java:7
5)
 [findbugs]     at
edu.umd.cs.findbugs.config.UserPreferences.<clinit>(UserPreferences.java
:72)
 [findbugs]     ... 2 more
 [findbugs] Output saved to dist/reports/findbugs/findbugs-report.xml

BUILD SUCCESSFUL
Total time: 0 seconds

The error says that findbugs.home is not set, but I'm sure it is. I've
used echoproperties to confirm, and if I change the value, then it
correctly reports an error that it cannot find findbugs.jar. So is
there something else that I'm forgetting to do? Is there anything else
I can try to figure this out? I'm running on Windows XP with
jdk1.5.0_10 and apache-ant-1.7.0.

Thanks for any help,

Alex Chapman
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