java Jetty/jasper JSP编译异常，无堆栈跟踪

Question

我的生产机器（ubuntu oneiric）在编译包含的JSP文件时遇到问题。加载页面时，输出日志中将记录以下异常：

2012-03-12 10:48:28.295:INFO:oejs.AbstractConnector:Started SelectChannelConnect
or@0.0.0.0:23458 STARTING                                                       
Mar 12, 2012 10:48:53 AM org.apache.jasper.compiler.Compiler generateClass      
SEVERE: Error compiling file: /tmp/jetty-0.0.0.0-23458-basej-_-any-/jsp/org/apac
he/jsp/WEB_002dINF/classes/apps/aco/templates/header_jsp.java                   
10:48:53,880  INFO root:50 - [index/index] executeTime : 2958ms                 
2012-03-12 10:48:53.886:WARN:oejs.ServletHandler:/                              
java.lang.NullPointerException                                                  
        at core.helpers.BaseJSP.include(BaseJSP.java:52)

编辑：

包含JSP文件的代码

   if (BaseFile.exists(delegate.getTemplate()))
    {
        try
        {
            // MZ: Pass the current object as model
            delegate.getRequest().setAttribute("object", delegate.getRenderObject());

            JspRuntimeLibrary.include(delegate.getRequest(), delegate.getResponse(), delegate.getTemplate(), delegate.getWriter(), false);

            // MZ: Dispatcher succeeded
            return true;
        }
        catch (Exception e)
        {
            // MZ: Nested template exception, should be rethrown
            Logger.info("Dispatcher error: " + e.getMessage() + " " + delegate.getRenderObject().getClass().getSimpleName() + " in template: " + delegate.getTemplate(), e);
            throw new BaseException("Dispatcher error: " + e.getMessage() + " " + delegate.getRenderObject().getClass().getSimpleName() + " in template: " + delegate.getTemplate());

        }
    }
    return false;
}

（实际包含是通过JspRuntimeLibrary.include完成的）

代码以前运行得很好，但可能需要添加lombok jar，并从多个实体中删除getter和setter。 在我的开发环境（windows）中，jsp编译没有任何问题

如何让jetty/jasper打印stacktrace/debug信息

谢谢， 马吕斯