我想要的东西：
java programName -jobs1 -C 10 -W 20 java programName -job2 java programName -job3
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 );
…输出的位置是：
Usage ProgramName -job1 <c> Some Desc -job2 Some desc -job3 Some desc -help Print this message
我希望-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,我使用了commons-cli 1.2.
解决方法
您不能拥有上下文相关的参数.您可以拥有以下参数：job1,job2,job3,C& W,但你不能说(通过图书馆)C& W仅对job1有效.
如果job1 / 2/3是互斥的,则创建一个OptionGroup.然后在代码中,确保C& W仅用于job1.
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);
}
}
}
其中产生以下输出：
<~/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
