不兼容，因为该组件声明了一个与Java 11兼容的组件，并且使用者需要一个与Java 10兼容的组件

Question

在我的build.gradle文件中，我升级了一个依赖项的版本(即: com.db:microservice-commons)。加载gradle更改后，我得到以下错误消息：

> Build file 'C:\Projects\Container\mschmidt\mount\booking-service\standalone\build.gradle' line: 50

   > A problem occurred evaluating project ':standalone'.
   > Could not resolve all files for configuration ':standalone:runtimeClasspath'.
   > Could not resolve com.db:microservice-commons:2.4.1.
     Required by:
         project :standalone
         project :standalone > project :service
      > No matching variant of com.db:microservice-commons:2.4.1 was found. The consumer was configured to find a runtime of a library compatible with Java 10, packaged as a jar, preferably optimized for standard JVMs, and its dependencies declared externally but:
          - Variant 'apiElements' capability com.db:microservice-commons:2.4.1 declares a library, packaged as a jar, and its dependencies declared externally:
              - Incompatible because this component declares an API of a component compatible with Java 11 and the consumer needed a runtime of a component compatible with Java 10
              - Other compatible attribute:
                  - Doesn't say anything about its target Java environment (preferred optimized for standard JVMs)
          - Variant 'runtimeElements' capability com.db:microservice-commons:2.4.1 declares a runtime of a library, packaged as a jar, and its dependencies declared externally:
              - Incompatible because this component declares a component compatible with Java 11 and the consumer needed a component compatible with Java 10
              - Other compatible attribute:
                  - Doesn't say anything about its target Java environment (preferred optimized for standard JVMs)
          - Variant 'samplessources' capability com.db:microservice-commons:2.4.1:
              - Incompatible because this component declares documentation and the consumer needed a library
              - Other compatible attributes:
                  - Doesn't say anything about how its dependencies are found (required its dependencies declared externally)
                  - Doesn't say anything about its target Java environment (preferred optimized for standard JVMs)
                  - Doesn't say anything about its target Java version (required compatibility with Java 10)
                  - Doesn't say anything about its elements (required them packaged as a jar)
                  - Doesn't say anything about its usage (required a runtime)

文件'C:\Projects\Container\mschmidt\mount\booking-service\standalone\build.gradle‘的50+行如下所示：

 manifest {
    def manifestClasspath = configurations.runtimeClasspath.collect { it.getName() }.join(' ')
    attributes 'Archiver-Version': 'Plexus Archiver'
    attributes 'Build-Jdk': org.gradle.internal.jvm.Jvm.current()
    attributes 'Main-Class': 'com.db.service.standalone.Standalone', 'Class-Path': manifestClasspath
    }
}

我不知道这是怎么回事。项目JDK和Gradle JVM设置为Java11。同样的问题，但对我没有帮助。

有什么好主意吗？

Answer 1

好吧，我发现问题了。

build.gradle文件中有以下两行：

 sourceCompatibility = 10
 targetCompatibility = 10

他们需要改到11。然后就成功了。