afterEvaluate {
    rootProject.subprojects { project ->
        println project.name
        project.task("generateApiDoc", {
            group "javadoc"
            def rootProjectPath = rootProject.buildDir.absolutePath
            def projectPath = new File("").absolutePath
            def apiPackageFile = new File(projectPath, "apipackage.txt")
            def sourcePath = new File(projectPath, "src/main/java")
            def outputDocPath = new File(rootProjectPath, "javadoc/${project.name}")
            doFirst {
                println "javadoc -sourcepath ${sourcePath} -d ${outputDocPath} @${apiPackageFile}"
                if (!apiPackageFile.exists()) {
                    throw new Exception("不是api模块")
                }
            }
            doLast {
                exec {
                    commandLine "javadoc", "-sourcepath", sourcePath, "-d", outputDocPath, "-encoding", "UTF-8", "@${apiPackageFile}"
                }
            }
        })
    }
}