当我在Java Web应用程序中使用log4j单击html链接时保存日志记录消息

Question

I need to save the logging messages into file when I click html link. I created dynamic web project and .jsp web file in eclipse. Also I'm using log4j for logging.

For now I create log4j.properties file to save logging messages in file. Also I implemented Logger:

private static final Logger logger = LoggerFactory.getLogger(Application.class);

and the message:

logger.info("start app");

But I need to save logging when I click some web page link or liked text from the created .jsp file. Something like this logging message:

2014-06-03 09:53:36,001 INFO root:01 - start app
2014-06-03 09:55:01,002 INFO root:02 - Selected: LINKED TEXT  

Please help or suggest.

Thanks in advance

Answer 1

This is how JSP works.

JSP is converted to a servlet, that runs in the server side, serving http requests.

When you click on a link in the browser, you're generating an event in the browser. This event may or may not generate a http request, and this request may or may not be sent to your servlet.

If you need to capture the events in the browser, you have two ways I guess

[1] capture the events in the client side, using for example a browser plugin. This is how automation plugins such as selenium works. They are pieces of code that run in the browser (in the client).

[2] attach some javascript code in your page to the click event on every link, so if someone clicks on some anchor element, you also generate a http request to your servlet so you can log the event. The problem of this approach is that you need javascript code for all your pages in order to do that.