我不熟悉 Spring Boot 插件，所以大概没有“bootStop”命令（就像在 Jetty 插件中一样）。此外，经过广泛搜索后，我认为没有所需结果的命令行选项。
一个选项，虽然公认是一个杂项，是使用工具 API。 （完整代码示例is here。）
这个想法是在 Groovy 脚本中启动长时间运行的任务。在命令下，脚本将停止任务并调用gradle tasks 来触发守护进程。
从上面链接的 GitHub 代码中，一个长时间运行的任务可能是：
task runService() << {
ant.delete(file: "runService.log")
def count = 0
while(true) {
new File("runService.log").withWriterAppend {
it.writeLine("[runService] count: ${count}")
}
println "sleeping ...."
try { Thread.sleep(5 * 1000) } catch (Exception ex) {}
count++
}
}
Groovy 脚本背后的想法是在后台线程中启动任务，然后在收到命令时发送取消令牌。
为清楚起见，我将说明两个部分。第一段是后台线程：
class BuildRunner implements Runnable {
def connector
def tokenSource
def taskName
BuildRunner(connector, tokenSource, taskName) {
this.connector = connector
this.tokenSource = tokenSource
this.taskName = taskName
}
public void run() {
def connection = connector.connect()
try {
def build = connection.newBuild()
build.withCancellationToken(tokenSource.token())
build.setStandardOutput(System.out)
build.setStandardError(System.err)
build.forTasks(taskName)
build.run()
println "${taskName} is finishing ..."
} catch(BuildCancelledException bcex) {
println "received cancel signal"
println "tickling daemon ..."
tickleDaemon(connector)
println "Done."
System.exit(0)
} catch(Exception ex) {
println "caught exception : " + ex
} finally {
connection.close()
}
}
def tickleDaemon = { connector ->
final String TASKS = "tasks"
def connection = connector.connect()
def build = connection.newBuild()
build.forTasks(TASKS)
build.run()
}
}
另一部分是主控制台：
// main -----------
// edit as appropriate
final String TASK_NAME = "runService"
final String GRADLE_INSTALL_DIR = "/Users/measter/tools/gradle-2.14.1"
final String PROJECT_DIR = "../service"
def connector = GradleConnector.newConnector()
connector.useInstallation(new File(GRADLE_INSTALL_DIR))
connector.forProjectDirectory(new File(PROJECT_DIR))
def tokenSource = connector.newCancellationTokenSource()
println "starting ${TASK_NAME}"
def buildRunner = new BuildRunner(connector, tokenSource, TASK_NAME)
new Thread(buildRunner).start()
def console = new Scanner(System.in)
println "Enter a command (S: stop task, Q: quit): "
while (console.hasNextLine()) {
def lineTokenizer = new Scanner(console.nextLine())
String token = lineTokenizer.next()
if (token.equalsIgnoreCase("S")) {
tokenSource.cancel()
} else if (token.equalsIgnoreCase("Q")) {
println "Done."
System.exit(0)
}
}
可以轻松自定义此代码以执行其他任务、重新启动任务等。它暗示了一个围绕个人命令行使用的美化包装。