爲什麼「jar.enabled = false」會影響Gradle中的依賴關係？

故事：我最近發現，在項目設置jar.enabled = false多項目搖籃項目將停止從能指B類項目在同一個項目的-功能通過爲什麼「jar.enabled = false」會影響Gradle中的依賴關係？

dependencies { 
    compile project(':b-features') 
}

B-功能問題：爲什麼jar.enabled = false停止項目A成功引用項目B？

附加信息：

根項目的build.gradle：

group 'gradle.studies' 
apply plugin: 'java' 
...

settings.gradle根項目：

rootProject.name = 'multi-project-reference' 
include 'a-features' 
include 'b-features'

的build.gradle項目a-features的：

group 'gradle.studies' 
apply plugin: 'java' 
... 
dependencies { 
    compile project(':b-features') 
} 
...

的build.gradle項目b-features

group 'gradle.studies' 
apply plugin: 'java'  
jar.enabled = false  
...

一類在a-features項目：

package outerproject; 

import innerproject.B; 

public class A { 
    public static void main(String[] args) { 
     B b = new B(); 
     System.out.println(b.getMsg()); 
    } 
}

B類中b-features項目：

package innerproject; 
public class B { 

    public B() { 
     this.msg = "Hello World"; 
    } 

    private String msg; 

    public String getMsg() { 
     return msg; 
    } 
    //... 
}

錯誤：

14:27:50: Executing external task 'build'... 
:compileJava NO-SOURCE :processResources NO-SOURCE :classes UP-TO-DATE 
:jar UP-TO-DATE :assemble UP-TO-DATE :compileTestJava NO-SOURCE 
:processTestResources NO-SOURCE :testClasses UP-TO-DATE :test 
NO-SOURCE :check UP-TO-DATE :build UP-TO-DATE :b-features:compileJava 
UP-TO-DATE :b-features:processResources NO-SOURCE :b-features:classes 
UP-TO-DATE :b-features:jar SKIPPED 
/home/nikita/IdeaProjects/multi-project-reference/a-features/src/main/java/outerproject/A.java:3: 
error: package innerproject does not exist import innerproject.B; 
       ^/home/nikita/IdeaProjects/multi-project-reference/a-features/src/main/java/outerproject/A.java:7: 
error: cannot find symbol 
     B b = new B(); 
     ^ symbol: class B location: class A /home/nikita/IdeaProjects/multi-project-reference/a-features/src/main/java/outerproject/A.java:7: 
error: cannot find symbol 
     B b = new B(); 
       ^ symbol: class B location: class A 3 errors :a-features:compileJava FAILED 

FAILURE: Build failed with an exception.

來源

2017-10-15 Nikita Koselev

您實際所依賴的是由項目生成的工件（JAR文件）。當你禁用了神器的產生（jar任務）時，所需的課程不再被發現。

來源

2017-10-15 17:12:15 Vampire

爲什麼「jar.enabled = false」會影響Gradle中的依賴關係？

回答

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