java如何在TileRequestProcessor中更改布局定义运行时

Question

我有一个设想， 当请求来自IE浏览器时，显示login（这是默认行为），当请求来自Chrome浏览器时，显示login_chrome（布局定义在Tiles.xml中，如下所示）

<definition name="login" path="/login/login1.jsp"></definition>
<definition name="login_chrome" path="/login/login2.jsp"></definition>

我有CustomizedTileProcessor

    public class CustomizedTileProcessor extends TilesRequestProcessor
    {
     @Override
   protected boolean processTilesDefinition(String pDefinitionName, boolean pContextRelative, HttpServletRequest pRequest, HttpServletResponse pResponse) throws IOException, ServletException
   {
      if (isChromeBrowser(pRequest))
      {
         pDefinitionName+="_chrome";
      }
      return super.processTilesDefinition(pDefinitionName, true, pRequest, pResponse);
   } 
}

注意：我不想把逻辑放在JSP中，根据条件选择包含的JSP

请帮助我并告诉我要覆盖TilesRequestProcessor的哪个方法来动态更改磁贴定义

Answer 1

在做了大量的试错之后，我知道我必须重写TilesRequestProcessor的processForwardConfig方法。在那里，我必须将path对象的ForwardConfig值覆盖到我的新布局，即login_chrome

请参阅以下代码：

public class CustomizedTileProcessor extends TilesRequestProcessor
    {
     @Override
 protected void processForwardConfig(HttpServletRequest pRequest, 
       HttpServletResponse pResponse, ForwardConfig pForward) 
       throws IOException, ServletException
   {
      if(isChromeBrowser(pRequest))
      {
         ForwardConfig newForward = new ForwardConfig(pForward.getName(),
         pForward.getPath()+"_chrome", pForward.getRedirect(),
         pForward.getContextRelative());

         super.processForwardConfig(pRequest, pResponse, newForward);
      }
      else
      {
         super.processForwardConfig(pRequest, pResponse, pForward);
      }
   }
}