check the log file. This is normally in the launch (i.e. bin) directory, and is called "JMeter.log".
check the JMeter documentation to ensure that the test script has been set up correctly
check the JMeterFAQ.
check the mailing lists to see if anyone else has had the same or a similar problem
check Bugzilla - you might have hit a known bug, and there may be a workround documented in Bugzilla
try setting the logging level to DEBUG for some or all of the JMeter packages (details are in the JMeter.properties file)
If all the above fail to provide an answer, please read How To Ask Questions The Smart Way before posting a message on the the JMeter User mailing list.
如果上面这些都无法帮你解决你遇到的问题,请发送一个信息到 JMeter 的用户邮件列表——发送前请先看一下“如何聪明的提问 http://www.catb.org/~esr/faqs/smart-questions.html”。
以上内容主要为意译,同时尽量忠实于原文,如果大家发现译文有与原文原意相驳的地方,请给我留言,我会立即修改 ^_^