SLF4J / SLF4J-550 JPMS 下 java.lang.ClassLoader#getResource 工作差异 ============================== Here's what changed in this issue in the last few minutes. This issue has been created This issue is now assigned to you. This issue has been deleted ============================== Issue created ------------------------------ 琉璃 created this issue on 26/May/22 7:57 PM Summary: JSPM 下 java.lang.ClassLoader#getResource 工作差异 Issue Type: Story Affects Versions: 2.0.0-alpha7 Assignee: SLF4J developers list Attachments: 2022-05-27_01-55-40.jpg Components: slf4j-simple Created: 26/May/22 7:57 PM Environment: 版本 Windows 11 专业版 版本 21H2 安装日期 ‎2021-‎10-‎15 操作系统版本 22000.675 java 17 2021-09-14 LTS Java(TM) SE Runtime Environment (build 17+35-LTS-2724) Java HotSpot(TM) 64-Bit Server VM (build 17+35-LTS-2724, mixed mode, sharing)   Apache Maven 3.8.4 (9b656c72d54e5bacbed989b64718c159fe39b537) Maven home: C:\usr\tool\apache-maven-3.8.4 Java version: 17, vendor: Oracle Corporation, runtime: C:\usr\lib\jdk-17 Default locale: zh_CN, platform encoding: GBK OS name: "windows 10", version: "10.0", arch: "amd64", family: "windows"   <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>2.0.0-alpha7</version> </dependency>   Priority: Major Reporter: 琉璃 Description: 有如下简单测试代码: There are the following simple test codes:   {code:java} package cn.test.resources; import java.net.URL; public class Main { public static void main(String[] args) { URL resource = Main.class.getClassLoader().getResource(""); System.out.println(resource.getFile()); } } {code}     这是一个 maven 项目, 只有这一个文件, pom 文件仅包含 `slf4j-api` 的依赖. 如果不添加 `module-info.java` 文件, 在我的计算机上, 上述代码输出:  {color:#c1c7d0}/C:/test/testJpmsResource/target/classes/{color} 如果添加了 `module-info.java` 文件, 即使没有声明 `requires org.slf4j` 我会得到下面的结果: {color:#c1c7d0}file:/C:/usr/data/maven/org/slf4j/slf4j-api/2.0.0-alpha7/slf4j-api-2.0.0-alpha7.jar!/META-INF/versions/9/{color}   This is a maven project. There is only one file. The POM file only contains the dependencies of 'slf4j API'  If you don't add ` module info Java file, on my computer, the above code output: {color:#c1c7d0}/C:/test/testJpmsResource/target/classes/{color} If you add ` module info Java file, even if it does not declare 'requires org Slf4j ` I will get the following results: {color:#c1c7d0}file:/C:/usr/data/maven/org/slf4j/slf4j-api/2.0.0-alpha7/slf4j-api-2.0.0-alpha7.jar!/META-INF/versions/9/{color}     ---- 差异大概发生在 `jdk.internal.loader.BuiltinClassLoader#findMiscResource` ,  我的疑问是 是什么造成这种差异? , slf4j 的 `META-INF/versions/*` 的文件为什么会在这里返回?    The difference probably occurs in `jdk.internal.loader.BuiltinClassLoader#findMiscResource`, my question is: - What makes this difference? - why does slf4j's' meta-inf / versions / * 'file return here?   ============================== Issue deleted ------------------------------ Ceki Gülcü has deleted this issue on 26/May/22 8:05 PM ============================== This message was sent by Atlassian Jira (v8.8.0#808000-sha1:e2c7e59)