如何使用 pm2 配置文件启动带有参数的 Java 应用程序? [英] How can I start a java application with parameters using a pm2 config file?

问题描述

我正在尝试使用 pm2 启动 graphhopper...graphhopper 是一个 Java 应用程序，我在终端上启动它的方式是转到其文件夹并输入以下命令:

I'm trying to start graphhopper using pm2... graphhopper is a java application and the way I initiate it on the terminal is by going to its folder and entering the following command:

java -jar matching-web/target/graphhopper-map-matching-web-1.0-SNAPSHOT.jar server config.yml

这个应用程序从命令行运行得很好，但我没有成功地将它作为使用 pm2 的服务运行.我正在使用的配置文件是这个(pm2 start config.json):

This application works fine running from the command line, but I haven't succeeded on running it as a service with pm2. The config file I'm using is this one (pm2 start config.json):

{
    "apps":[
    {
        "name":"graphhopper",
        "cwd":".",
        "script":"/usr/bin/java",
        "args":[
            "-jar",
            "/home/myyser/graphhopper/map-matching/matching-web/target/graphhopper-map-matching-web-1.0-SNAPSHOT.jar",
            "server",
            "config.yml"
        ],
        "log_date_format":"YYYY-MM-DD HH:mm Z",
        "exec_interpreter":"",
        "exec_mode":"fork"
     }
   ]
}

我 100% 确定我在这里出错的是我编写 server"、config.yml" 参数的方式......查看 pm2 logs graphhopper 我可以看到这些参数根本没有被识别......我也试图调整它的完成方式，但我没有设法找出正确的解决方案.我知道如何使用不带参数的 pm2 启动 Java 应用程序.但是，我如何使用具有 graphhopper 的参数的 Java 应用程序来做到这一点?

I'm 100% sure that what I'm getting wrong here is the way I'm writing the "server", "config.yml" parameters... Looking into pm2 logs graphhopper I can see that those parameters are not being recognized at all... I've tried to tweak the way it's done as well but I didn't manage to figure out the right solution. I know how to start a java application using pm2 with no parameters. But how can I do it with a java application that has parameters as in the case of graphhopper?

推荐答案

如评论中所述，这个问题可以通过创建一个 bash 脚本并使用 pm2 运行它来解决，而不是直接运行java应用程序...使用的bash脚本是文件graphhopper.sh，如下所示:

As stated in the comments, this issue can be solved by creating a bash script and running it with pm2 instead of running directly the java application... The bash script used was the file graphhopper.sh as the following:

#!/bin/bash
java -jar matching-web/target/graphhopper-map-matching-web-1.0-SNAPSHOT.jar server config.yml

并使用 pm2 将其作为服务启动:

And to start it as a service with pm2:

pm2 start graphhopper.sh --name=graphhopper

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