This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
Struts has some pre-defined message keys that it will use before and after messages: errors.header, prefix, suffix, and footer. Header goes before all messages, and footer after all messages, while prefix goes before each message, and suffix after each message. So, if you want messages listed as part of a list, you could put the following:
If you want a line break between each message, then just specifying errors.suffix=<br> should do it.