解决gradle的本地工程依赖和通过maven依赖之间的冲突问题

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Gradle子工程之间通过 compile project(":XXX")这种方式依赖是非常便利的，但是这样的时候，如果用uploadArchives上传jar到maven，生成的pom.xml是不正确的。本文将给出解决这一问题的一种方法。

解决办法就是添加一个新的配置，比如叫mvnpub，然后通过它来配置发布时pom里应当用到的依赖，在生成pom.xml时，用mvnpub替换默认的compile。代码如下：

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//add configuration mvnpub to replace the default compile configuration when uploadArchives
configurations {
    mvnpub
}
javadoc {
    options.encoding ="UTF-8"
}
task packageJavadoc(type: Jar, dependsOn:'javadoc') {
    from javadoc.destinationDir
    classifier ='javadoc'
}
task packageSources(type: Jar) {
    from sourceSets.main.allSource
    classifier ='sources'
}
artifacts {
    archives packageJavadoc {
        type ='javadoc'
    }
    archives packageSources {
        type ='sources'
    }
}
uploadArchives {
    repositories {
        mavenDeployer {
            //replace the default compile to mvnpub to prevent the broken project dependency
            conf2ScopeMappings.mappings.remove(configurations.compile)
            conf2ScopeMappings.addMapping(300, configurations.mvnpub, "compile")
            repository(url: rootProject['upload.repository']) {
                authentication(userName:'name', password:'password')
            }
            snapshotRepository(url: rootProject['upload.snapshotRepository']) {
                authentication(userName:'name', password:'password')
            }
            pom.groupId = "me.sulong"
            pom.artifactId = "gradle-sample"
            pom.version = "1.0"
        }
    }
}
task printMappings << {
    conf2ScopeMappings.mappings.each{ k, v ->
        println"configuration: ${k}"
        println"mapping: \n\tpriority: ${v.priority}\n\tscope: ${v.scope}"
        println"========================================"
    }
}

其中printMappings任务是用来查看映射情况的。以上代码在 gradle-1.0-milestone-8a测试通过。

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