从ruby类调用jar文件 [英] call jar file from ruby class

问题描述

如何从ruby类调用jar文件(一个Java存档文件).并从中访问功能/方法.

How to call jar file (a java archive file) from ruby class. And access the functions/methods from it.

我指的是以下但是我遇到以下错误:

'require': cannot load such file -- /tmp/Test.jar (LoadError)

如何解决此问题.

推荐答案

您可以使用系统调用.如果您有很多用户，则可能会遇到性能问题，但这对于大多数情况应该有效:

You can use a system call. You may have performance issues if you have lots of users, but for most this should work:

# Create a directory (in this sample called "jars") inside public directory and move your jar file inside the newly created directory.

def externaljar

 argsA = ""
 argsB = ""

    Dir.chdir("#{RAILS_ROOT}/public/jars/") do

        # Use your path to the java according to the java directory installed in your machine.

        retResult  = system("/home/user/java/jdk1.7.0/bin/java -jar JSpell.jar #{argsA} #{argsB}")

    end #chdir
 end

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