有谁知道如何配置SBT项目以运行注释处理器(APT)?我正在使用QueryDSL等Java工具在Web项目上进行一些实验,并且需要以类似QueryDSL Maven插件的方式为我的JPA模型类生成querydsl类。
提前致谢。
最佳答案
您可以手动运行注释处理器(请参见下面的command
)或实现类似于以下内容的SBT任务:
lazy val processAnnotations = taskKey[Unit]("Process annotations")
processAnnotations := {
val log = streams.value.log
log.info("Processing annotations ...")
val classpath = ((products in Compile).value ++ ((dependencyClasspath in Compile).value.files)) mkString ":"
val destinationDirectory = (classDirectory in Compile).value
val processor = "com.package.PluginProcessor"
val classesToProcess = Seq("com.package.Class1", "com.package.Class2") mkString " "
val command = s"javac -cp $classpath -proc:only -processor $processor -XprintRounds -d $destinationDirectory $classesToProcess"
failIfNonZeroExitStatus(command, "Failed to process annotations.", log)
log.info("Done processing annotations.")
}
def failIfNonZeroExitStatus(command: String, message: => String, log: Logger) {
val result = command !
if (result != 0) {
log.error(message)
sys.error("Failed running command: " + command)
}
}
packageBin in Compile <<= (packageBin in Compile) dependsOn (processAnnotations in Compile)
根据需要更新
destinationDirectory
,processor
和classesToProcess
。您还可以将“ -d”标志更改为“ -s”,具体取决于所使用的注释处理器的类型(请参见options for javac)。