Question

我开始使用JPMS模块对Java 11 Gradle项目进行模块化。为了测试目的，我创建了一个名为TestGradleModular的示例项目。模块配置看起来不错，可以从eclipse中找到模块，我可以在我的应用程序中使用它们。

当我在eclipse中启动应用程序时，JVM引发异常：

Error occurred during initialization of boot layer
java.lang.module.FindException: Module org.apache.logging.log4j not found, required by TestGradleModular

我查看了项目的运行配置，发现eclipse包含了我在类路径上使用的模块，而不是启动命令行上的模块路径：

C:\Program Files\OpenJDK\jdk-11.0.6+10\bin\javaw.exe -Dfile.encoding=UTF-8 -p "C:\Users\user\workspaces\test\TestGradleModular\bin\main" -classpath "C:\Users\user\.gradle\caches\modules-2\files-2.1\org.apache.logging.log4j\log4j-core\2.11.2\6c2fb3f5b7cd27504726aef1b674b542a0c9cf53\log4j-core-2.11.2.jar;C:\Users\user\.gradle\caches\modules-2\files-2.1\org.apache.logging.log4j\log4j-api\2.11.2\f5e9a2ffca496057d6891a3de65128efc636e26e\log4j-api-2.11.2.jar" -m TestGradleModular/TestGradleModular.TestMe

TestGradleModular项目包含以下文件：

gradle.build:

apply plugin: 'java'
apply plugin: 'eclipse'
apply plugin: 'maven'

sourceCompatibility = 11
targetCompatibility = 11

repositories {
    mavenCentral()
    mavenLocal()
}

plugins.withType(JavaPlugin).configureEach {
    java {
        modularity.inferModulePath = true
    }
}

ext.isConGradle = {entry -> 
    entry.kind == 'con' && entry.path == 'org.eclipse.buildship.core.gradleclasspathcontainer'
}

tasks.withType(JavaCompile) {

    doFirst {
        options.compilerArgs += [
            '--module-path', classpath.asPath
        ]
        classpath = files()
        
        options.fork = true
        options.encoding = compileEncoding
        options.debug = compileDebugging
        
        if(compileDebugging){
            options.debugOptions = new DebugOptions()
            options.debugOptions.setDebugLevel(compilerDebuggingInformation)
        }
    }
}

eclipse {
    project {
        natures 'org.eclipse.buildship.core.gradleprojectnature'
    }

    classpath {
    
        //Necessary otherwise the library is not raised to the module level.
        containers 'org.eclipse.buildship.core.gradleclasspathcontainer'
    
        file {
            whenMerged {
                entries.findAll { isConGradle(it) }.each {
                    it.entryAttributes['module'] = 'true'
                }
            }
        }
    }
}

dependencies{
    implementation group: 'org.apache.logging.log4j', name: 'log4j-core', version: '2.11.2'
}

src/main/java/module-info.java:

module TestGradleModular{

   requires org.apache.logging.log4j;
}

src/main/java/TestGradleModular/TestMe.java:

package TestGradleModular;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

public class TestMe{

   private static final Logger LOGGER = LogManager.getLogger();

   public static void main(String[] args){

      LOGGER.error("d'oh!");
   }
}

Eclipse Java构建路径>库

Modulepath
|> JRE System Library [JavaSE-11]
|> Project and External Dependencies
 |> Access rules: No rules defined
 |> External annotations: (None)
 |> Native library location: No
 |> Is modular
 |> log4j-core-2.11.2.jar - C:\Users\user\.gradle\caches\modules-2\files-2.1\org.apache.logging.log4j\log4j-core\2.11.2\6c2fb3f5b7cd27504726aef1b674b542a0c9cf53\log4j-core-2.11.2.jar
  |> Is modular - non modifiable
  |> Access rules: (no restrictions) - non modifiable
  |> Visible only for the test sources: No - non modifiable
 |> log4j-api-2.11.2.jar - C:\Users\user\.gradle\caches\modules-2\files-2.1\org.apache.logging.log4j\log4j-api\2.11.2\f5e9a2ffca496057d6891a3de65128efc636e26e\log4j-api-2.11.2.jar
  |> Is modular - non modifiable
  |> Access rules: (no restrictions) - non modifiable
  |> Visible only for the test sources: No - non modifiable
Classpath

这是蚀错误还是Gradle配置错误？

我在以下位置进行了测试

Gradle Version 6.4.1
eclipse 2019-12 (4.14.0) x64 with Buildship 3.1.3
eclipse 2020-06 (4.16.0) x64 with Buildship 3.1.4   
AdoptOpenJDK 11.0.6+10 x64

编辑：

我在Buildship的问题跟踪器中打开了一个问题： https://github.com/eclipse/buildship/issues/1002

eclipse JPMS运行配置模块路径丢失的模块

0 个答案: