看看Spring Shell

Spring Shell’s features include A simple, annotation driven, programming model to contribute custom commands Use of Spring Boot auto-configuration functionality as the basis for a command plugin strategy Tab completion, colorization, and script execution Customization of command prompt, shell history file name, handling of results and errors Dynamic enablement of commands based on domain specific criteria Integration with the bean validation API Already built-in commands, such as clear screen, gorgeous help, exit ASCII art Tables, with formatting, alignment, fancy borders, etc.

正如前面提到的一个评论(https://github.com/pcj/google-options)是一个很好的开始。

我想补充的一点是:

1)如果您遇到一些解析器反射错误，请尝试使用更新版本的guava。在我的例子中:

maven_jar(
    name = "com_google_guava_guava",
    artifact = "com.google.guava:guava:19.0",
    server = "maven2_server",
)

maven_jar(
    name = "com_github_pcj_google_options",
    artifact = "com.github.pcj:google-options:jar:1.0.0",
    server = "maven2_server",
)

maven_server(
    name = "maven2_server",
    url = "http://central.maven.org/maven2/",
)

2)当运行命令行时:

bazel run path/to/your:project -- --var1 something --var2 something -v something

3)当你需要使用帮助时，只需输入:

bazel run path/to/your:project -- --help

看一看最近的JCommander。

我创造了它。我很高兴收到问题或功能请求。

我一直试图维护一个Java CLI解析器列表。

航空公司 Active Fork: https://github.com/rvesse/airline argparse4j argparse args4j clajr cli-parser CmdLn 命令行 DocOpt.java 海豚getopt DPML CLI (Jakarta Commons CLI2分支) 马蒂亚斯·劳克斯博士 Jakarta Commons CLI jargo jargp jargs java-getopt jbock JCLAP jcmdline jcommander jcommando Jewelcli(作者:我) JOpt简单 jsap naturalcli Object Mentor CLI文章(关于重构和TDD的更多内容) parse-cmd ritopt 罗普 TE-Code命令 picocli有ANSI彩色使用帮助和自动完成

我想向您展示我的实现:ReadyCLI

优点:

for lazy programmers: a very small number of classes to learn, just see the two small examples on the README in the repository and you are already at 90% of learning; just start coding your CLI/Parser without any other knowledge; ReadyCLI allows coding CLIs in the most natural way; it is designed with Developer Experience in mind; it largely uses the Builder design pattern and functional interfaces for Lambda Expressions, to allow a very quick coding; it supports Options, Flags and Sub-Commands; it allows to parse arguments from command-line and to build more complex and interactive CLIs; a CLI can be started on Standard I/O just as easily as on any other I/O interface, such as sockets; it gives great support for documentation of commands.

我开发这个项目是因为我需要新的功能(选项，标志，子命令)，并且可以在我的项目中以最简单的方式使用。

这是谷歌的命令行解析库，作为Bazel项目的一部分是开源的。我个人认为它是最好的，比Apache CLI简单得多。

https://github.com/pcj/google-options

安装

Bazel

maven_jar(
    name = "com_github_pcj_google_options",
    artifact = "com.github.pcj:google-options:jar:1.0.0",
    sha1 = "85d54fe6771e5ff0d54827b0a3315c3e12fdd0c7",
)

Gradle

dependencies {
  compile 'com.github.pcj:google-options:1.0.0'
}

Maven

<dependency>
  <groupId>com.github.pcj</groupId>
  <artifactId>google-options</artifactId>
  <version>1.0.0</version>
</dependency>

使用

创建一个扩展OptionsBase并定义@Option(s)的类。

package example;

import com.google.devtools.common.options.Option;
import com.google.devtools.common.options.OptionsBase;

import java.util.List;

/**
 * Command-line options definition for example server.
 */
public class ServerOptions extends OptionsBase {

  @Option(
      name = "help",
      abbrev = 'h',
      help = "Prints usage info.",
      defaultValue = "true"
    )
  public boolean help;

  @Option(
      name = "host",
      abbrev = 'o',
      help = "The server host.",
      category = "startup",
      defaultValue = ""
  )
  public String host;

  @Option(
    name = "port",
    abbrev = 'p',
    help = "The server port.",
    category = "startup",
    defaultValue = "8080"
    )
    public int port;

  @Option(
    name = "dir",
    abbrev = 'd',
    help = "Name of directory to serve static files.",
    category = "startup",
    allowMultiple = true,
    defaultValue = ""
    )
    public List<String> dirs;

}

解析参数并使用它们。

package example;

import com.google.devtools.common.options.OptionsParser;
import java.util.Collections;

public class Server {

  public static void main(String[] args) {
    OptionsParser parser = OptionsParser.newOptionsParser(ServerOptions.class);
    parser.parseAndExitUponError(args);
    ServerOptions options = parser.getOptions(ServerOptions.class);
    if (options.host.isEmpty() || options.port < 0 || options.dirs.isEmpty()) {
      printUsage(parser);
      return;
    }

    System.out.format("Starting server at %s:%d...\n", options.host, options.port);
    for (String dirname : options.dirs) {
      System.out.format("\\--> Serving static files at <%s>\n", dirname);
    }
  }

  private static void printUsage(OptionsParser parser) {
    System.out.println("Usage: java -jar server.jar OPTIONS");
    System.out.println(parser.describeOptions(Collections.<String, String>emptyMap(),
                                              OptionsParser.HelpVerbosity.LONG));
  }

}

https://github.com/pcj/google-options