cobertura + gradle -为什么我不能执行cobertura任务？

Question

我正在从事一个多项目的分级项目，主要的build.gradle如下所示：

buildscript {
repositories {
    mavenLocal()
    mavenCentral()
}
    dependencies {
        classpath 'net.saliman:gradle-cobertura-plugin:2.2.4'
    }
}

plugins {
    id "org.sonarqube" version "2.2.1"
}

apply plugin: 'groovy'
apply plugin: 'cobertura'

def getVersionName = { ->
    def stdout = new ByteArrayOutputStream()
    exec {
        commandLine 'git', 'describe', '--tags', '--always'
        standardOutput = stdout
    }
    return stdout.toString().trim()
}

ext {
    springFrameworkVersion = '4.3.4.RELEASE'
}

subprojects {
    apply plugin: 'eclipse'
    apply plugin: 'idea'
    apply plugin: 'java'
    apply from: "${parent.projectDir.canonicalPath}/cobertura.gradle"

    sourceCompatibility = 1.8
    targetCompatibility = 1.8

    repositories {
        mavenCentral()
    }

    dependencies {
        compile("org.springframework:spring-context:${springFrameworkVersion}")

        testCompile("junit:junit:4.+")
        testCompile("org.springframework:spring-test:${springFrameworkVersion}")
    }
    jar {
        version = getVersionName()
    }
}

project(':projectA') {

}

project(':projectB') {
   dependencies {
            compile project(':projectA')
        }
    }

project(':projectC') {
    dependencies {
        compile project(':projectB')
    }
}

cobertura {
    coverageFormats = ['html', 'xml']
    coverageIgnoreTrivial = true
    coverageIgnores = ['org.slf4j.Logger.*']
    coverageReportDir = new File("$buildDir/reports/cobertura")
}

但是，当我尝试使用cobertura任务运行gradle包装器时，它会失败，控制台输出是：

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':instrument'.
> Could not resolve all dependencies for configuration ':cobertura'.
   > Cannot resolve external dependency net.sourceforge.cobertura:cobertura:2.0.3 because no repositories are defined.
     Required by:
         :main-project:unspecified

这里发生什么事情？

Answer 1

就像错误信息告诉你的那样。

您已经在您的根项目中声明了对net.sourceforge.cobertura:cobertura:2.0.3的依赖(因为它没有显式添加，我猜Gradle cobertura插件隐式地添加了它，它的文档可能说明了这一点)，但是您没有为您的根项目定义任何存储库。您只声明了构建脚本(用于解析Gradle插件等)和subprojects闭包中的所有子项目的存储库。还可以单独定义根项目的存储库，或者使用allprojects闭包来定义存储库，至少在这方面，您的构建应该工作得很好。