在将 Spotbug 添加到我的多模块项目期间,我遇到了一个问题:
地点:无法在项目 %X 上执行目标:无法解析项目 %X:war:1.0.1-SNAPSHOT 的依赖项:找不到 %Y。
1-https://repository.apache.org/content/repositories/snapshots/中的SNAPSHOT已缓存在本地存储库中,直到apache.snapshots的更新间隔已过或强制更新时,才会重新尝试解析 -> [帮助1]`
%X - 模块 1 它取决于模块 2 (%Y)
%Y - 模块 1 (%X) 需要模块 2(.jar 库)
pom.xml
:
<groupId>my.project</groupId>
<artifactId>myProj</artifactId>
<version>1.0.0-SNAPSHOT</version>
<packaging>pom</packaging>
<modules>
<module>%X</module>
<module>%Y</module>
</modules>
...
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>com.github.spotbugs</groupId>
<artifactId>spotbugs-maven-plugin</artifactId>
<version>4.0.4</version>
<dependencies>
<!-- overwrite dependency on spotbugs if you want to specify the version of spotbugs -->
<dependency>
<groupId>com.github.spotbugs</groupId>
<artifactId>spotbugs</artifactId>
<version>4.1.2</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</pluginManagement>
</build>
子模块pom.xml
:
<parent>
<groupId>my.project</groupId>
<artifactId>myProj</artifactId>
<relativePath>../pom.xml</relativePath>
<version>1.0.0-SNAPSHOT</version>
</parent>
<artifactId>%X</artifactId>
<version>1.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<name>%X</name>
.....
<build>
<finalName>%X</finalName>
<plugins>
<plugin>
<groupId>com.github.spotbugs</groupId>
<artifactId>spotbugs-maven-plugin</artifactId>
</plugin>
..........
</build>
然后我按下一个顺序执行命令:
>mvn clean compile
- 项目正常编译
>mvn spotbugs:spotbugs
- 输出错误
clean compile with -U
mvn spotbugs:spotbugs -pl :%X
PS:spotbugs 在代码分析方面有一些限制吗?我正在尝试在遗留项目中使用它,所以也许因此我遇到了麻烦
PPS:我已经在我的另一个没有“子项”的项目上尝试过它,并且它使用(比方说)最新技术,一切正常。
更新:我尝试执行
maven clean install -pl :%Y
,现在出现其他错误。还尝试排除“apache org”并出现相同的错误堆栈跟踪:
[INFO]
[INFO] --- spotbugs-maven-plugin:4.0.4:spotbugs (default-cli) @ myProject ---
[INFO] Fork Value is true
[java] Exception in thread "main" edu.umd.cs.findbugs.ba.AnalysisException: Exeption was thrown during analysis
[java] at edu.umd.cs.findbugs.FindBugs2.lambda$analyzeApplication$3(FindBugs2.java:1125)
[java] at java.util.ArrayList.forEach(ArrayList.java:1257)
[java] at edu.umd.cs.findbugs.FindBugs2.analyzeApplication(FindBugs2.java:1118)
[java] at edu.umd.cs.findbugs.FindBugs2.execute(FindBugs2.java:309)
[java] at edu.umd.cs.findbugs.FindBugs.runMain(FindBugs.java:395)
[java] at edu.umd.cs.findbugs.FindBugs2.main(FindBugs2.java:1231)
[java] Caused by: java.util.concurrent.ExecutionException: java.lang.OutOfMemoryError: GC overhead limit exceeded
[java] at java.util.concurrent.FutureTask.report(FutureTask.java:122)
[java] at java.util.concurrent.FutureTask.get(FutureTask.java:192)
[java] at edu.umd.cs.findbugs.FindBugs2.lambda$analyzeApplication$3(FindBugs2.java:1120)
[java] ... 5 more
[java] Caused by: java.lang.OutOfMemoryError: GC overhead limit exceeded
[java] at java.util.HashMap.resize(HashMap.java:704)
[java] at java.util.HashMap.putVal(HashMap.java:629)
[java] at java.util.HashMap.put(HashMap.java:612)
[java] at java.util.HashSet.add(HashSet.java:220)
[java] at java.util.AbstractCollection.addAll(AbstractCollection.java:344)
[java] at java.util.HashSet.<init>(HashSet.java:120)
[java] at edu.umd.cs.findbugs.ba.deref.UnconditionalValueDerefSet.cleanDerefSet(UnconditionalValueDerefSet.java:407)
[java] at edu.umd.cs.findbugs.ba.deref.UnconditionalValueDerefAnalysis.propagateDerefSetsToMergeInputValues(UnconditionalValueDerefAnalysis.java:881)
[java] at edu.umd.cs.findbugs.ba.deref.UnconditionalValueDerefAnalysis.meetInto(UnconditionalValueDerefAnalysis.java:728)
[java] at edu.umd.cs.findbugs.ba.Dataflow.execute(Dataflow.java:345)
[java] at edu.umd.cs.findbugs.classfile.engine.bcel.UnconditionalValueDerefDataflowFactory.analyze(UnconditionalValueDerefDataflowFactory.java:82)
[java] at edu.umd.cs.findbugs.classfile.engine.bcel.UnconditionalValueDerefDataflowFactory.analyze(UnconditionalValueDerefDataflowFactory.java:41)
[java] at edu.umd.cs.findbugs.classfile.impl.AnalysisCache.analyzeMethod(AnalysisCache.java:368)
[java] at edu.umd.cs.findbugs.classfile.impl.AnalysisCache.getMethodAnalysis(AnalysisCache.java:321)
[java] at edu.umd.cs.findbugs.ba.ClassContext.getMethodAnalysis(ClassContext.java:995)
[java] at edu.umd.cs.findbugs.ba.ClassContext.getUnconditionalValueDerefDataflow(ClassContext.java:837)
[java] at edu.umd.cs.findbugs.detect.BuildUnconditionalParamDerefDatabase.analyzeMethod(BuildUnconditionalParamDerefDatabase.java:118)
[java] at edu.umd.cs.findbugs.detect.BuildUnconditionalParamDerefDatabase.considerMethod(BuildUnconditionalParamDerefDatabase.java:107)
[java] at edu.umd.cs.findbugs.detect.BuildUnconditionalParamDerefDatabase.visitClassContext(BuildUnconditionalParamDerefDatabase.java:91)
[java] at edu.umd.cs.findbugs.DetectorToDetector2Adapter.visitClass(DetectorToDetector2Adapter.java:76)
[java] at edu.umd.cs.findbugs.FindBugs2.lambda$null$1(FindBugs2.java:1108)
[java] at edu.umd.cs.findbugs.FindBugs2$$Lambda$18/1193894341.call(Unknown Source)
[java] at java.util.concurrent.FutureTask.run(FutureTask.java:266)
[java] at edu.umd.cs.findbugs.CurrentThreadExecutorService.execute(CurrentThreadExecutorService.java:86)
[java] at java.util.concurrent.AbstractExecutorService.invokeAll(AbstractExecutorService.java:238)
[java] ... 4 more
mvn clean install
,这会将您的工件带到本地存储库。因为这使您能够:
使用(您的项目/模块)作为本地其他项目的依赖项而不是
mvn clean compile
,它仅编译到“构建输出文件夹”(通常为
target
;)(...这对于 IDE 来说可能就足够了,但也省略了完整的
test
和
package
阶段:o)...这使得来自 Spotbugs 的错误消息更容易理解(这是正确的:
%X:war:1.0.1-SNAPSHOT
不在存储库中(仅在您上次执行
install
的状态)。)
https://maven.apache.org/guides/introduction/introduction-to-the-lifecycle.html
java.lang.OutOfMemoryError
的唯一机会是:增强记忆力! (
https://spotbugs.github.io/spotbugs-maven-plugin/faq.html#How_do_I_avoid_OutOfMemory_errors,另请注意“fork”评论。)
分析您的堆栈跟踪和https://github.com/spotbugs/spotbugs/blob/master/spotbugs/src/main/java/edu/umd/cs/findbugs/ba/deref/UnconditionalValueDerefSet.java的当前源代码#L407,是:
Set<ValueNumber> valueNumbers = new HashSet<>(vnaFrame.allSlots());
...所以没有明显的错误,但实际上只是一个巨大的哈希集(实例化/复制),增加内存是一个公平的解决方案。
<plugin>
<groupId>com.github.spotbugs</groupId>
<artifactId>spotbugs-maven-plugin</artifactId>
<version>4.0.4</version>
........
<configuration>
<effort>Max</effort>
<threshold>Low</threshold>
<failOnError>false</failOnError>
<maxHeap>1024</maxHeap>
</configuration>
........
</plugin>