learning of struts 2

today , I am re-learning the Struts 2 ,and take some notes .

?

1. about the devMode

????a. it is good for devolopment ,and will reload the sourse like struts.xml ,web.xml etc. other than

????re-start the sever .

??? b. however , it is the cost of the performance , so do not forget to remove it when you release

??? your project .

?

2. Constants can be declared in multiple files. By default, constants are searched for in the following order, allowing for subsequent files to override previous ones:

struts-default.xml?? included in the struts2.jar filestruts-plugin.xml struts.xml struts.properties web.xml