Apache Commons CLI

The Apache Commons CLI library provides an API for parsing command line options passed to programs. It's also able to print help messages detailing the options available for a command line tool.

Apache Commons CLI

example ：

import org.apache.commons.cli.*;

public class MyCLI {

    public static void main(String[] args)  {

        Options options = new Options();

        options.addOption("t", false, "display current time");
        options.addOption("c", true, "country code");
        options.addOption("d", true, "ddddddddd");
        options.addOption("e", true, "eeeeeeeee");
        options.addOption("f", true, "fffffffff");

        CommandLineParser parser = new DefaultParser();

        CommandLine commandLine = null;
        try {
            commandLine = parser.parse(options, args);
        } catch (ParseException e) {
            HelpFormatter formatter = new HelpFormatter();
            formatter.printHelp("help", options);
        }

        if (commandLine.hasOption("t")) {
            System.out.println(commandLine.getOptionValue("t"));
        }

        if (commandLine.hasOption("c")) {
            System.out.println(commandLine.getOptionValue("c"));
        }

        if (commandLine.hasOption("d")) {
            System.out.println(commandLine.getOptionValue("d"));
        }

        if (commandLine.hasOption("e")) {
            System.out.println(commandLine.getOptionValue("e"));
        }

        if (commandLine.hasOption("f")) {
            System.out.println(commandLine.getOptionValue("f"));
        }
    }
}

maven 打包 生成jar

    <build>
        <plugins>
            <plugin>
                <artifactId>maven-assembly-plugin</artifactId>
                <configuration>
                    <archive>
                        <manifest>
                            <mainClass>com.MyCLI</mainClass>
                        </manifest>
                    </archive>
                    <descriptorRefs>
                        <descriptorRef>jar-with-dependencies</descriptorRef>
                    </descriptorRefs>
                </configuration>
                <executions>
                    <execution>
                        <id>make-assemble</id>
                        <phase>package</phase>
                        <goals>
                            <goal>single</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>