java解析命令行参数（common-cli）

import org.apache.commons.cli.CommandLineParser;
import org.apache.commons.cli.BasicParser;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.CommandLine;

public static void main(String[] args) throws Exception {
  // Create a Parser
  CommandLineParser parser = new BasicParser( );
  Options options = new Options( );
  options.addOption("h", "help", false, "Print this usage information");
  options.addOption("v", "verbose", false, "Print out VERBOSE information" );
  options.addOption("f", "file", true, "File to save program output to");
  // Parse the program arguments
  CommandLine commandLine = parser.parse( options, args );
  // Set the appropriate variables based on supplied options
  boolean verbose = false;
  String file = "";

  if( commandLine.hasOption('h') ) {
    System.out.println( "Help Message")
    System.exit(0);
  }
  if( commandLine.hasOption('v') ) {
    verbose = true;
  }
  if( commandLine.hasOption('f') ) {
    file = commandLine.getOptionValue('f');
  }
}

 

 

上面是代码片段使用方法：

 

java xxxx -h

java xxxx -f 119

 

代码摘录：

http://www.discursive.com/books/cjcook/reference/app-infra-sect-parsing-simple-cmdline