Java 【命令行接收参数】

commons-cli

依赖：

　　　　 <!-- https://mvnrepository.com/artifact/commons-cli/commons-cli -->
        <dependency>
            <groupId>commons-cli</groupId>
            <artifactId>commons-cli</artifactId>
            <version>1.2</version>
        </dependency>

代码

public static void main(String[] args) {
        args = new String[]{"-t", "command_test", "-f", "/User/xxx/command.txt", "-b", "-s50", "-Dkey1=value1", "-Dkey2=value2" };

        try {
            // create Options object
            Options options = new Options();
            options.addOption(new Option("t", "text", true, "use given information(String)"));
            options.addOption(new Option("b", false, "display current time(boolean)"));
            options.addOption(new Option("s", "size", true, "use given size(Integer)"));
            options.addOption(new Option("f", "file", true, "use given file(File)"));

            @SuppressWarnings("static-access")
            Option property = OptionBuilder.withArgName("property=value")
                    .hasArgs(2)
                    .withValueSeparator()
                    .withDescription("use value for given property(property=value)")
                    .create("D");
            property.setRequired(true);
            options.addOption(property);

            // print usage
            HelpFormatter formatter = new HelpFormatter();
            formatter.printHelp( "AntOptsCommonsCLI", options );
            System.out.println();

            // create the command line parser
            CommandLineParser parser = new PosixParser();
            CommandLine cmd = parser.parse(options, args);

            // check the options have been set correctly
            System.out.println(cmd.getOptionValue("t"));
            System.out.println(cmd.getOptionValue("f"));
            if (cmd.hasOption("b")) {
                System.out.println(new Date());
            }
            System.out.println(cmd.getOptionValue( "s" ));
            System.out.println(cmd.getOptionProperties("D").getProperty("key1") );
            System.out.println(cmd.getOptionProperties("D").getProperty("key2") );
        } catch (Exception ex) {
            System.out.println( "Unexpected exception:" + ex.getMessage() );
        }
    }

 

jcommander

依赖

    　　<!-- https://mvnrepository.com/artifact/com.beust/jcommander -->
        <dependency>
            <groupId>com.beust</groupId>
            <artifactId>jcommander</artifactId>
            <version>1.78</version>
        </dependency>

代码

public class JCommanderBean {

    @Parameter
    public List<String> parameters = Lists.newArrayList();

    @Parameter(names = {"-log", "-verbose"}, description = "Level of verbosity")
    public Integer verbose = 1;

    @Parameter(names = "-groups", description = "Comma-separated list of group names to be run")
    public String groups;

    @Parameter(names = "-debug", description = "Debug mode")
    public boolean debug = false;

    @DynamicParameter(names = "-D", description = "Dynamic parameters go here")
    public Map<String, String> dynamicParams = new HashMap<String, String>();
}

public static void main(String[] args) {

        String[] argv = {"-log", "2", "-groups", "unit1,unit2,unit3",
                "-debug", "-Doption=value", "a", "b", "c"};
        JCommanderBean jct = new JCommanderBean();

        JCommander.newBuilder()
                .addObject(jct)
                .build()
                .parse(argv);

        Assert.assertEquals(2, jct.verbose.intValue());
        Assert.assertEquals("unit1,unit2,unit3", jct.groups);
        Assert.assertTrue(jct.debug);
        Assert.assertEquals("value", jct.dynamicParams.get("option"));
        Assert.assertEquals(Arrays.asList("a", "b", "c"), jct.parameters);
    }