完成一个 JRuby 应用程序

Question

所以我第一次在 JRuby 中创建了一个应用程序。现在我很难理解如何完成应用程序，即。如何提供最终用户可以执行的.jar 文件。

我知道编译成可以通过命令行调用的.class 文件，但这对用户不是很友好。

如何让最终用户轻松访问我用 JRuby 编写的应用程序？

Answer 1

如何提供对我用 JRuby 编写的应用程序的轻松访问 最终用户？

您可以尝试安装 rawr gem，看看是否可以让它工作。

1) 为您的项目创建所有必要的 rawr 文件（这是在您安装 rawr gem 之后）：

~/jruby_programs$ mkdir proj1
~/jruby_programs$ cd proj1
~/jruby_programs/proj1$ rawr install

然后你会得到一堆输出。这将创建此目录结构：

../proj1
├── Rakefile
├── build_configuration.rb
├── lib
│   └── java
│       └── jruby-complete.jar
└── src
    └── org
        └── monkeybars
            └── rawr
                ├── Main.java
                └── Path.java

2) 将你的源代码放在 src/ 目录下，例如

./src
├── hello_jruby.rb
└── org/



#hello_jruby.rb

puts 'hello'

require 'java'
java_import 'java.util.TreeSet'

set = TreeSet.new
set.add "foo"
set.add "Bar"
set.add "baz"

set.each do |v|
  puts "value: #{v}"
end

3) 创建 jar 文件：

~/jruby_programs/proj1$ rake rawr:jar

我最初使用 rake rawr:base_jar 是因为原始文档表明您应该这样做，但这对我不起作用。当我执行 jar 文件时（见下一步），我不断收到错误：

线程“主”java.lang.NoClassDefFoundError 中的异常： org/jruby/RubyInstanceConfig 在 org.monkeybars.rawr.Main.main(Main.java:21) 原因： java.lang.ClassNotFoundException: org.jruby.RubyInstanceConfig

4) 执行jar文件：

~/jruby_programs/proj1$ java -jar package/jar/proj1.jar

这是我的输出：

Add 'src/' to $:
hello
value: Bar
value: baz
value: foo

不幸的是，我不知道如何摆脱第一行。 $: 是一个 ruby​​ 全局变量，其同义词是 $LOAD_PATH。将以下内容添加到 hello_jruby.rb 的顶部不起作用：

$LOAD_PATH << '/src'

这是我必须对 build_configurationl.rb 文件进行的调整（如果默认设置不适合您，您只需取消注释部分）：

# Generated by Rawr version 1.7.0
configuration do |c|
    # The name for your resulting application file (e.g., if the project_name is 'foo' then you'll get foo.jar, foo.exe, etc.)
    # default value: "proj1"
    #
    #c.project_name = "proj1"

    # Undocumented option 'output_dir'
    # default value: "package"
    #
    #c.output_dir = "package"

    # The type of executable to create (console or gui)
    # default value: "gui"
    #
    c.executable_type = "console"

    # The main ruby file to invoke, minus the .rb extension
    # default value: "main"
    #
    c.main_ruby_file = 'hello_jruby'

    # The fully-qualified name of the main Java file used to initiate the application.
    # default value: "org.monkeybars.rawr.Main"
    #
    #c.main_java_file = "org.monkeybars.rawr.Main"

    # A list of directories where source files reside
    # default value: ["src"]
    #
    #c.source_dirs = ["src"]

    # A list of regexps of files to exclude
    # default value: []
    #
    #c.source_exclude_filter = []

    # The base directory that holds Mirah files, or subdirectories with Mirah files.
    # default value: "src"
    #
    #c.mirah_source_root = "src"

    # Whether Ruby source files should be compiled into .class files. Setting this to true currently breaks packaging
    # default value: false
    #
    #c.compile_ruby_files = false

    # A list of individual Java library files to include.
    # default value: []
    #
    #c.java_lib_files = []

    # A list of directories for rawr to include . All files in the given directories get bundled up.
    # default value: ["lib/java"]
    #
    #c.java_lib_dirs = ["lib/java"]

    # A list of files that will be copied into the `<output_dir>/jar` folder.  Note that the files maintain their directory path when copied. 
    # default value: []
    #
    #c.files_to_copy = []

    # Undocumented option 'source_jvm_version'
    # default value: 1.7
    #
    c.source_jvm_version = 1.6

    # Undocumented option 'target_jvm_version'
    # default value: 1.7
    #
    c.target_jvm_version = 1.6

    # Undocumented option 'jvm_arguments'
    # default value: ""
    #
    #c.jvm_arguments = ""

    # Undocumented option 'java_library_path'
    # default value: ""
    #
    #c.java_library_path = ""

    # Undocumented option 'extra_user_jars'
    # default value: {}
    #
    #c.extra_user_jars[:data] = { :directory => 'data/images/png',
    #                             :location_in_jar => 'images',
    #                             :exclude => /*.bak$/ }

    # Undocumented option 'verbose'
    # default value: false
    #
    #c.verbose = false

    # Undocumented option 'mac_do_not_generate_plist'
    # default value: false
    #
    #c.mac_do_not_generate_plist = false

    # working directory specified in plist file
    # default value: "$APP_PACKAGE"
    #
    #c.mac_plist_working_directory = "$APP_PACKAGE"

    # Undocumented option 'mac_icon_path'
    # default value: nil
    #
    #c.mac_icon_path = nil

    # Undocumented option 'windows_icon_path'
    # default value: nil
    #
    #c.windows_icon_path = nil

end