java-commons-cli使用

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测试环境

使用commons-cli可以方便的解析java参数main(String[] args)

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<dependency>
    <groupId>commons-cli</groupId>
    <artifactId>commons-cli</artifactId>
    <version>1.4</version>
</dependency>

示例

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// https://blog.csdn.net/yamaxifeng_132/article/details/87822812
public static void main(String[] args) {
    Options options = new Options();
    options.addOption("h", "help", false, "print options' information");
    options.addOption("p", "port", true, "http proxy port");
    options.addOption("s", "start", false, "commond: start http proxy server");
    CommandLineParser parser = new DefaultParser();

    try {
        CommandLine cli = parser.parse(options, args);
        if(cli.hasOption("h")){
            HelpFormatter hf = new HelpFormatter();
            hf.printHelp("Options", options);
        }else {
            String port = cli.getOptionValue("p");
            int portInt = 8580;
            if(port!=null){
                portInt = Integer.parseInt(port);
            }
            System.out.println(port);
            System.out.println(System.getProperty("logback.configurationFile"));
        }
    } catch (ParseException e) {
        e.printStackTrace();
    }
}

命令行运行jar

  • 短命令java -jar xx.jar -p=8888 -s
  • 长命令java -jar xx.jar -port=8888 -start
  • 带jvm参数 java -jar -Dlogback.configurationFile=./conf/logback.xml xx.jar -p=8888 -s