jsvc & Gradle -无控制台输出，Gradle守护进程崩溃

Question

我正尝试在我的本地机器上使用IntelliJ思想测试我的Java应用程序(它打算用作守护进程，因此使用jsvc)。

出于测试目的，我希望将stdout和stderr输出到控制台。根据jsvc help site (jsvc --help)设置，-outfile '&2'和-errfile '&1'应该将标准输出和标准错误重定向到对方(根据我的理解)。

在正常的shell中(设置了这两个选项)，守护进程启动并将一些内容输出到控制台，但是当使用Gradle Exec task和完全相同的命令时，Gradle守护进程崩溃并输出到文件'&2‘和'&1’。

任务配置：

File jsvcFile = file("./jsvc")
File pidFile = file("./jsvc.pid")

String mainClass = "substupdater.SubstUpdater"

task run (dependsOn: [jar, jsvc], type: Exec) {

    doFirst {

        // Get the absolute path of all libraries
        String classPath = project.configurations.compile.join(':')

        executable(jsvcFile)

        args("-server", "-cp", classPath + ':' + jar.archivePath, "-nodetach",
             "-cwd", project.rootDir, "-outfile", "'&2'", "-errfile", "'&1'",
             "-pidfile", pidFile, "-procname", project.name, mainClass, "debug")

    }
}

Gradle守护程序崩溃(gradle -d运行)：

21:57:52.911 [DEBUG] [org.gradle.process.internal.DefaultExecHandle] Changing state to: STARTING
21:57:52.914 [DEBUG] [org.gradle.process.internal.DefaultExecHandle] Waiting until process started: command '/path/to/jsvc'.
21:57:52.924 [DEBUG] [org.gradle.process.internal.DefaultExecHandle] Changing state to: STARTED
21:57:52.925 [INFO] [org.gradle.process.internal.DefaultExecHandle] Successfully started process 'command '/path/to/jsvc''
21:57:52.926 [DEBUG] [org.gradle.process.internal.ExecHandleRunner] waiting until streams are handled...
Daemon vm is shutting down... The daemon has exited normally or was terminated in response to a user interrupt.
21:57:53.528 [DEBUG] [org.gradle.launcher.daemon.registry.PersistentDaemonRegistry] Removing daemon address: [some-address port:35450, addresses:[/0:0:0:0:0:0:0:1%lo, /127.0.0.1]]
21:57:53.529 [DEBUG] [org.gradle.cache.internal.DefaultFileLockManager] Waiting to acquire exclusive lock on daemon addresses registry.
21:57:53.529 [DEBUG] [org.gradle.cache.internal.DefaultFileLockManager] Lock acquired on daemon addresses registry.
21:57:53.530 [DEBUG] [org.gradle.cache.internal.DefaultFileLockManager] Releasing lock on daemon addresses registry.
21:57:53.530 [DEBUG] [org.gradle.process.internal.ExecHandleRunner] Abort requested. Destroying process: command '/path/to/jsvc'.
21:57:53.532 [DEBUG] [org.gradle.process.internal.DefaultExecHandle] Changing state to: ABORTED
21:57:53.533 [DEBUG] [org.gradle.process.internal.DefaultExecHandle] Process 'command '/path/to/jsvc'' finished with exit value 1 (state: ABORTED)
----- End of the daemon log -----

21:57:53.888 [DEBUG] [org.gradle.launcher.daemon.client.DaemonClientInputForwarder] Dispatching close input message: org.gradle.launcher.daemon.protocol.CloseInput@ce9a99
21:57:53.888 [DEBUG] [org.gradle.launcher.daemon.client.DaemonClientConnection] thread 18: dispatching class org.gradle.launcher.daemon.protocol.CloseInput
21:57:53.889 [DEBUG] [org.gradle.launcher.daemon.client.DaemonClientConnection] thread 1: connection stop
21:57:53.907 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] 
21:57:53.907 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] FAILURE: Build failed with an exception.
21:57:53.907 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] 
21:57:53.908 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] * What went wrong:
21:57:53.908 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] Gradle build daemon disappeared unexpectedly (it may have been killed or may have crashed)
21:57:53.908 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] 
21:57:53.908 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] * Try:
21:57:53.908 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] Run with --stacktrace option to get the stack trace.

如有任何帮助，我们将不胜感激:)

Answer 1

我只需指定文件描述符符号链接的完整路径(即用于stdout的/proc/self/fd/1和用于stderr的/proc/self/fd/2 )，现在可以将输出输出到控制台。

Gradle守护进程仍然崩溃，但我认为这是由于Gradle无法处理jsvc守护进程自毁(？)。