JRuby:使用StringScanner:NoMethodError:未定义的方法`bol?'为零:NilClass

时间:2013-06-20 15:40:49

标签: java ruby jruby jsr223

我正在尝试在Java webapp中使用JRuby 1.7.4。 这是我正在尝试运行的代码:

require 'strscan'
scanner = StringScanner.new("test\ntest\n")
scanner.bol?

使用以下Java代码执行此操作:

    ScriptEngineManager manager = new ScriptEngineManager();
    ScriptEngine engine = manager.getEngineByName("jruby");
    InputStream resourceAsStream = Thread.currentThread().getContextClassLoader().getResourceAsStream("test.rb");
    InputStreamReader inputStreamReader = new InputStreamReader(resourceAsStream, Charset.forName("UTF-8"));
    engine.eval(inputStreamReader);

不幸的是,它最终会出现这种情况:

NoMethodError: undefined method `bol?' for nil:NilClass
  (root) at <script>:3

javax.script.ScriptException: org.jruby.embed.EvalFailedException: (NoMethodError) undefined method `bol?' for nil:NilClass
    at org.jruby.embed.jsr223.JRubyEngine.wrapException(JRubyEngine.java:104)
    at org.jruby.embed.jsr223.JRubyEngine.eval(JRubyEngine.java:121)
    at org.jruby.embed.jsr223.JRubyEngine.eval(JRubyEngine.java:146)

知道可能出现什么问题吗?

1 个答案:

答案 0 :(得分:-1)

解决方案很难找到,它似乎与Intellij Idea相关联,它在类路径中添加了以下路径,使测试失败:

C:\Users\theaterofthought\.IntelliJIdea12\config\plugins\ruby\rubystubs\rubystubs18

清除并重新创建IDEA项目有助于在-classpath参数中为我的测试工作而没有此路径的新启动器。