Jdk+tomcat+mysql Build website Can't open

We webwall the test Site Lingyun Forum, which I used before with jdk-6u5-windows-i586-p.exe+apachetomcat6+ Mysql-essential-5.1.40-win32.msi installed, the installation process is the use of the default installation address. There is a problem with the website and cannot be opened.

To view the Tomcat logs:

C:\Program Files\apache softwarefoundation\tomcat 6.0\logs:

Lifecycleexception:no userdatabase component found under Keyuserdatabase

Reason: is the file Tomcat_user.xml (C:\ProgramFiles\Apache software foundation\tomcat 6.0\conf\) out of the question, do not know why the file is empty, no content, The last modification was May 18, and the colleague said he had not modified it, and that it was possible that he had done something to make it work.

Workaround: After reconfiguring the Tomcat_user.xml file according to the contents of the following URL, the problem is resolved. Http://hi.baidu.com/qinxuanhui/item/5537b69ce1e5061e924f41a2