The following is my project structure:
|-- etc
| `-- excludeFilter.xml
|-- pom.xml
|-- src
| |-- main
| | |-- java
| | | `-- org
| | | `-- rainbow
| | | `-- test
| | | `-- BugController.java
| | `-- resources
| `-- test
| `-- java
The content of BugController.java is:
package org.rainbow.test;
public class BugController {
public void test() {
int a = 1 / 0;
}
}The pom.xml is like the following at the beginning:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.rainbow</groupId>
<artifactId>fb-test</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>findbugs-maven-plugin</artifactId>
<version>3.0.4</version>
<executions>
<execution>
<id>check</id>
<phase>compile</phase>
<goals>
<goal>check</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>Then, I ran the command:
Obviously, the findbugs failed, and it printed out the reason:
[INFO] Dead store to a in org.rainbow.test.BugController.test() [org.rainbow.test.BugController] At BugController.java:[line 5] DLS_DEAD_LOCAL_STORE
Then, I wanted to ignore this bug. After reading the Filter File Doc, I just wrote the following exclude-file (named excludeFilter.xml, showed in the project structure):
<?xml version="1.0" encoding="UTF-8"?>
<FindBugsFilter>
<Match>
<Class name="~.*"/> <!-- ignore all bug warnings -->
</Match>
</FindBugsFilter>And I added a configuration to the plugin execution as following:
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>findbugs-maven-plugin</artifactId>
<version>3.0.4</version>
<executions>
<execution>
<configuration>
<effort>default</effort>
<failOnError>true</failOnError>
<excludeFilterFile>${project.basedir}/etc/excludeFilter.xml</excludeFilterFile>
</configuration>
<id>check</id>
<phase>compile</phase>
<goals>
<goal>check</goal>
</goals>
</execution>
</executions>
</plugin>Then I ran the command again:
I thought the bug should be ignored, but unfortunately, it was still there.
And then I ran the command again with -X option to see the detail:
The following is a snippet from the output of the above command:
[INFO] --- findbugs-maven-plugin:3.0.4:check (check) @ fb-test ---
[DEBUG] Configuring mojo org.codehaus.mojo:findbugs-maven-plugin:3.0.4:check from plugin realm ClassRealm[plugin>org.codehaus.mojo:findbugs-maven-plugin:3.0.4, parent: sun.misc.Launcher$AppClassLoader@d16e5d6]
[DEBUG] Configuring mojo 'org.codehaus.mojo:findbugs-maven-plugin:3.0.4:check' with basic configurator -->
[DEBUG] (s) classFilesDirectory = /home/rainbow/workspace/study/fb-test/target/classes
[DEBUG] (s) compileSourceRoots = [/home/rainbow/workspace/study/fb-test/src/main/java]
[DEBUG] (s) debug = false
[DEBUG] (s) effort = default
[DEBUG] (s) excludeFilterFile = /home/rainbow/workspace/study/fb-test/etc/excludeFilter.xml
[DEBUG] (s) failOnError = true
[DEBUG] (s) findbugsXmlOutput = true
[DEBUG] (s) findbugsXmlOutputDirectory = /home/rainbow/workspace/study/fb-test/target
[DEBUG] (s) fork = true
[DEBUG] (s) includeTests = false
[DEBUG] (s) localRepository = id: local
We can see that the check execution goal got the configuration excludeFilterFile, but it still printed out the bug:
[DEBUG] Executing findbugs:check
[DEBUG] Here goes...............Executing findbugs:check
[INFO] BugInstance size is 1
[INFO] Error size is 0
[INFO] Total bugs: 1
[INFO] Dead store to a in org.rainbow.test.BugController.test() [org.rainbow.test.BugController] At BugController.java:[line 5] DLS_DEAD_LOCAL_STORE
[INFO]
And at last, I tried to move the configuration to be outside of the execution node, as following:
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>findbugs-maven-plugin</artifactId>
<version>3.0.4</version>
<configuration>
<effort>default</effort>
<failOnError>true</failOnError>
<excludeFilterFile>${project.basedir}/etc/excludeFilter.xml</excludeFilterFile>
</configuration>
<executions>
<execution>
<id>check</id>
<phase>compile</phase>
<goals>
<goal>check</goal>
</goals>
</execution>
</executions>
</plugin>And the plugin worked fine, and the bug was ignored.
So, my question is: Is the way of configuration I tried a bug? Or, I misconfigured something? Or, I misunderstood the configuration of maven plugin?
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