我想要这样的东西：
java programName -jobs1 -C 10 -W 20
java programName -job2
java programName -job3
含内容：
Option o1 = new Option("job2", "some desc");
Option o2 = new Option("job3" , "(some desc")
Option o3 = OptionBuilder.hasArgs(2).withArgName( "W" ).withArgName("C").withDescription( "Some desc" ).create("job1")
Option o4 = new Option("help");
Options os = new Options().addOption(o1).addOption(o2).addOption(o3).addOption(o4).
HelpFormatter formatter = new HelpFormatter();
formatter.printHelp( "ProgramName", options );
...输出是：
Usage ProgramName
-job1 <c> Some Desc
-job2 Some desc
-job3 Some desc
-help Print this message
我期望-job1它应该打印-job1 -C <> -W <>
我错过了什么吗？它不适用于多个参数。顺便说一下，我用过commons-cli 1.2.
您不能有上下文相关的参数。您可以使用参数：job1、job2、job3、C & W，但您不能（通过库）说 C & W 仅对 job1 有效。
如果作业 1/2/3 互斥，则创建选项组。然后在代码中，确保仅针对 job1 给出 C 和 W。
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.CommandLineParser;
import org.apache.commons.cli.GnuParser;
import org.apache.commons.cli.Option;
import org.apache.commons.cli.OptionBuilder;
import org.apache.commons.cli.OptionGroup;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.HelpFormatter;
public class StackOverflowExample
{
public static final String JOB1 = "job1";
public static final Option job1 =
OptionBuilder.hasArg(false)
.isRequired(false)
.withDescription("description of job1")
.create(JOB1);
public static final String JOB2 = "job2";
public static final Option job2 =
OptionBuilder.hasArg(false)
.isRequired(false)
.withDescription("description of job2")
.create(JOB2);
public static final String JOB3 = "job3";
public static final Option job3 =
OptionBuilder.hasArg(false)
.isRequired(false)
.withDescription("description of job3")
.create(JOB3);
public static final String MY_C = "C";
public static final Option my_c =
OptionBuilder.hasArg(true)
.withArgName("count")
.isRequired(false)
.withDescription("description of C")
.create(MY_C);
public static final String MY_W = "W";
public static final Option my_w =
OptionBuilder.hasArg(true)
.withArgName("width")
.isRequired(false)
.withDescription("description of W")
.create(MY_W);
public static void main(String[] args)
{
Options options = new Options();
OptionGroup optgrp = new OptionGroup();
optgrp.addOption(job1);
optgrp.addOption(job2);
optgrp.addOption(job3);
options.addOptionGroup(optgrp);
options.addOption(my_c);
options.addOption(my_w);
try {
CommandLineParser parser = new GnuParser();
CommandLine cmdline = parser.parse(options, args);
if (((cmdline.hasOption(MY_C)) || (cmdline.hasOption(MY_W))) &&
(! cmdline.hasOption(JOB1))) {
HelpFormatter help = new HelpFormatter();
help.printHelp("cmdname", options);
System.exit(-1);
}
System.out.println("OK");
}
catch (Exception ex) {
ex.printStackTrace();
System.exit(-1);
}
}
}
产生以下输出：
<~/sandbox/CoreUtils/scratch> $ javac -d . -cp ~/sandbox/CoreUtils/lib/commons-cli-1.2.jar:. StackOverflowExample.java
<~/sandbox/CoreUtils/scratch> $ java -cp ~/sandbox/CoreUtils/lib/commons-cli-1.2.jar:. StackOverflowExample -C foo -job1
OK
<~/sandbox/CoreUtils/scratch> $ java -cp ~/sandbox/CoreUtils/lib/commons-cli-1.2.jar:. StackOverflowExample -C foo -job2
usage: cmdname
-C <count> description of C
-job1 description of job1
-job2 description of job2
-job3 description of job3
-W <width> description of W
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