ClassLoader.getSystemResource（）会去哪里？

Question

现有的代码可以调用

URL resource = ClassLoader.getSystemResource("hp.obo.gz");

据我了解，这会在类路径中搜索所请求的文件。 我使用下面的代码打印出了类路径： https : //www.mkyong.com/java/how-to-print-out-the-current-project-classpath/并获得了以下内容：

/C:/Program%20Files/JetBrains/IntelliJ%20IDEA%202017.1.3/lib/idea_rt.jar
/C:/Program%20Files/JetBrains/IntelliJ%20IDEA%202017.1.3/plugins/junit/lib/junit-rt.jar
/C:/Program%20Files/Java/jdk1.8.0_66/jre/lib/charsets.jar
/C:/Program%20Files/Java/jdk1.8.0_66/jre/lib/deploy.jar
/C:/Program%20Files/Java/jdk1.8.0_66/jre/lib/ext/access-bridge-64.jar
/C:/Program%20Files/Java/jdk1.8.0_66/jre/lib/ext/cldrdata.jar
/C:/Program%20Files/Java/jdk1.8.0_66/jre/lib/ext/dnsns.jar
/C:/Program%20Files/Java/jdk1.8.0_66/jre/lib/ext/jaccess.jar
/C:/Program%20Files/Java/jdk1.8.0_66/jre/lib/ext/jfxrt.jar
/C:/Program%20Files/Java/jdk1.8.0_66/jre/lib/ext/localedata.jar
/C:/Program%20Files/Java/jdk1.8.0_66/jre/lib/ext/nashorn.jar
/C:/Program%20Files/Java/jdk1.8.0_66/jre/lib/ext/sunec.jar
/C:/Program%20Files/Java/jdk1.8.0_66/jre/lib/ext/sunjce_provider.jar
/C:/Program%20Files/Java/jdk1.8.0_66/jre/lib/ext/sunmscapi.jar
/C:/Program%20Files/Java/jdk1.8.0_66/jre/lib/ext/sunpkcs11.jar
/C:/Program%20Files/Java/jdk1.8.0_66/jre/lib/ext/zipfs.jar
/C:/Program%20Files/Java/jdk1.8.0_66/jre/lib/javaws.jar
/C:/Program%20Files/Java/jdk1.8.0_66/jre/lib/jce.jar
/C:/Program%20Files/Java/jdk1.8.0_66/jre/lib/jfr.jar
/C:/Program%20Files/Java/jdk1.8.0_66/jre/lib/jfxswt.jar
/C:/Program%20Files/Java/jdk1.8.0_66/jre/lib/jsse.jar
/C:/Program%20Files/Java/jdk1.8.0_66/jre/lib/management-agent.jar
/C:/Program%20Files/Java/jdk1.8.0_66/jre/lib/plugin.jar
/C:/Program%20Files/Java/jdk1.8.0_66/jre/lib/resources.jar
/C:/Program%20Files/Java/jdk1.8.0_66/jre/lib/rt.jar
/C:/Users/johnp/Desktop/git_stuff/boqa/target/test-classes/
/C:/Users/johnp/Desktop/git_stuff/boqa/target/classes/
/C:/Users/johnp/.m2/repository/commons-cli/commons-cli/1.2/commons-cli-1.2.jar
/C:/Users/johnp/.m2/repository/de/charite/compbio/ontologizer-core/2.1-SNAPSHOT/ontologizer-core-2.1-20160115.222100-6.jar
/C:/Users/johnp/.m2/repository/com/att/research/grappa/1.2.1/grappa-1.2.1.jar
/C:/Users/johnp/.m2/repository/de/charite/compbio/ontologizer-benchmark/2.1-SNAPSHOT/ontologizer-benchmark-2.1-20160115.222106-6.jar
/C:/Users/johnp/.m2/repository/com/beust/jcommander/1.35/jcommander-1.35.jar
/C:/Users/johnp/.m2/repository/org/slf4j/slf4j-api/1.7.7/slf4j-api-1.7.7.jar
/C:/Users/johnp/.m2/repository/org/apache/logging/log4j/log4j-1.2-api/2.8.2/log4j-1.2-api-2.8.2.jar
/C:/Users/johnp/.m2/repository/org/apache/logging/log4j/log4j-api/2.8.2/log4j-api-2.8.2.jar
/C:/Users/johnp/.m2/repository/org/apache/logging/log4j/log4j-core/2.8.2/log4j-core-2.8.2.jar
/C:/Users/johnp/.m2/repository/junit/junit/4.12/junit-4.12.jar
/C:/Users/johnp/.m2/repository/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3.jar
/C:/Program%20Files/JetBrains/IntelliJ%20IDEA%202017.1.3/lib/idea_rt.jar

但是，实际位于何处（删除hp.obo.gz会导致空指针异常）：

C：\\ Users \\用户johnp \\桌面\\ git_stuff \\ boqa的\\ src \\主\\资源

根据上面的输出，我看不到它是如何到达此位置的（它看起来类似于/ C：/ Users / johnp / Desktop / git_stuff / boqa / target / test-classes /和/ C：/ Users / johnp / Desktop / git_stuff / boqa /目标/类/）。 任何帮助，将不胜感激。 谢谢！

Answer 1

右键单击一个文件夹，然后“将目录标记为”->“资源根”。 这将配置IntelliJ幕后的所有功能以使其正常工作