当使用“lein run”运行时，关闭挂钩不触发。

本文介绍了当使用“lein run”运行时，关闭挂钩不触发。的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我有以下代码：

（ns test-hook.core） （defn -main [] （.addShutdownHook（Runtime / getRuntime）（Thread。＃（printlnshutdown）））（printlnstart） （doseq [i（range 1 6）] （Thread / sleep 1000）（println i）））

和以下project.clj

（defproject test- hook1.0.0-SNAPSHOT：aot：all ：main test-hook.core ：descriptionFIXME：write description：dependencies [[org.clojure / clojure1.2.0]]）

当我运行lein run钩子仅在正常程序执行时执行，而不是在接收SIGINT（Ctrl-C）

时运行相同的代码，在lein外部成功执行关闭钩子，即使接收到SIGINT 。

如何使用Ctrl-C运行时执行关闭挂接？

lein trampoline run

似乎适合我。

AFAIKlein trampoline不嵌套JVM，因此您的Ctrl-C不会被leiningen捕获，而是由您的代码捕获。

I have the following code:

(ns test-hook.core) (defn -main [] (.addShutdownHook (Runtime/getRuntime) (Thread. #(println "shutdown"))) (println "start") (doseq [i (range 1 6)] (Thread/sleep 1000) (println i)))

and the following project.clj

(defproject test-hook "1.0.0-SNAPSHOT" :aot :all :main test-hook.core :description "FIXME: write description" :dependencies [[org.clojure/clojure "1.2.0"]])

when I run it with "lein run" the shutdown hook only gets executed on normal program execution, not when receiving SIGINT (Ctrl-C)

the same code when ran outside of lein successfully executes the shutdown hook even when receiving SIGINT.

how can I have the shutdown hook executed when running from lein and aborting with Ctrl-C?

解决方案

Have you tried running it with trampoline?

lein trampoline run

Seems to work for me.

AFAIK "lein trampoline" doesn't nest the JVM, so your Ctrl-C isn't caught by leiningen, but by your code.