NPE in StrutsTestCase after enabling Tiles
问题 I developed some JUnit tests that extend org.apache.struts2.StrutsTestCase. I used the tutorial on struts.apache.org as my starting point. Everything was working fine until I modified my simple web application to use Tiles. I have Tiles working fine in the app but now my Action test cases have stopped working. I'm getting NullPointerException at org.apache.struts2.views.tiles.TilesResult.doExecute when I run the following line of code: ActionProxy proxy = getActionProxy("/displaytag.action");