Apache storm 如何在bolt中添加日志语句

我想在

b-0bolt

中添加一些日志语句，以确认在execute方法中是否有任何非勾选元组

我该怎么做

storm-version -0.9.0.1 

调试完成后，我通过单击Storm UI中喷口的端口号使用了logviewer

2016-01-19 16:55:25 b.s.d.executor [INFO] Processing received message source: __system:-1, stream: __tick, id: {}, [5]
2016-01-19 16:55:25 b.s.d.executor [INFO] Processing received message source: __system:-1, stream: __tick, id: {}, [5]
2016-01-19 16:55:25 b.s.d.executor [INFO] Processing received message source: __system:-1, stream: __tick, id: {}, [5]
2016-01-19 16:55:25 b.s.d.executor [INFO] Processing received message source: __system:-1, stream: __tick, id: {}, [5]
2016-01-19 16:55:25 b.s.d.executor [INFO] Processing received message source: __system:-1, stream: __tick, id: {}, [5]
2016-01-19 16:55:25 b.s.d.executor [INFO] Processing received message source: __system:-1, stream: __tick, id: {}, [5]
2016-01-19 16:55:25 b.s.d.executor [INFO] Processing received message source: __system:-1, stream: __tick, id: {}, [5]
2016-01-19 16:55:25 b.s.d.executor [INFO] Processing received message source: __system:-1, stream: __tick, id: {}, [5]
2016-01-19 16:55:25 b.s.d.executor [INFO] Processing received message source: __system:-1, stream: __tick, id: {}, [5]
2016-01-19 16:55:25 b.s.d.executor [INFO] Processing received message source: __system:-1, stream: __tick, id: {}, [5]
2016-01-19 16:55:25 b.s.d.executor [INFO] Processing received message source: __system:-1, stream: __tick, id: {}, [5]
2016-01-19 16:55:25 b.s.d.executor [INFO] Processing received message source: __system:-1, stream: __tick, id: {}, [5]
2016-01-19 16:55:25 b.s.d.executor [INFO] Processing received message source: __system:-1, stream: __tick, id: {}, [5]
2016-01-19 16:55:25 b.s.d.executor [INFO] Processing received message source: __system:-1, stream: __tick, id: {}, [5]
2016-01-19 16:55:25 b.s.d.executor [INFO] Processing received message source: __system:-1, stream: __tick, id: {}, [5]
2016-01-19 16:55:25 b.s.d.executor [INFO] Processing received message source: __system:-1, stream: __tick, id: {}, [5]
2016-01-19 16:55:25 b.s.d.executor [INFO] Processing received message source: __system:-1, stream: __tick, id: {}, [5]
2016-01-19 16:55:25 b.s.d.executor [INFO] Processing received message source: __system:-1, stream: __tick, id: {}, [5]

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这意味着工作很好吗？这里的

[5]

是什么意思？

只需通过配置对象启用调试模式：

Config c=new Config（）；c、 setDebug（true）--这将记录拓扑中的所有消息。谢谢我用结果和问题更新了帖子，请看一看？
[5]
是元组的内容，即，您有一个单属性输入元组，属性值为“5”。对于记号元组，您可以忽略这一点——对于数据元组，这当然很重要。此外，您还可以看到
源代码
是
\uu系统：-1
（什么是“producerId:task id`通常--\uu系统和-1表示它是由Storm生成的，不是常规的数据元组），
流
是
\uu tick
（即，声明的输出流--\uu tick是传递tick元组的Storm系统流），因此您在这里只得到了勾号元组。那么如何才能让它读取数据呢？我从未与DRPC合作过。对不起。（顺便说一句：您的信息非常稀少——我怀疑您是否会得到这样的帮助。您需要用有关设置的更多详细信息（包括代码片段）来扩展您的问题，这只是给您的建议）。