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Struts 1.2.2 新功能全新体验


  (-) org.apache.struts.action.Action的改动.
  
  在Action类中增加了addMessages、addErrors、getErrors、getMessages四个方法
  便于处理ActionMessages和ActionErrors.
  
  
  I. protected void addMessages(
   HttpServletRequest request,
   ActionMessages messages)
  
  II. protected void addErrors(
   HttpServletRequest request,
   ActionErrors errors)
  
  III. protected ActionErrors getErrors(HttpServletRequest request)
  
  IV. protected ActionMessages getMessages(HttpServletRequest request)
  
  下面的代码片断是关于ActionMessages的(ActionErrors的例子类似):
  
  ActionMessages messages=getMessages(request);
  //xx.xx.xx代表Resource Bundle中的Key值.
  ActionMessage msg=new ActionMessage("xx.xx.xx");
  messages.add(ActionMessages.GLOBAL_MESSAGE,msg);
  addMessages(request,messages);
  
  //在1.2.2中不必调用saveMessages将ActionMessages对象保存到request.
  //因为,在addMessages中已经包含了此功能.
  //具体可参见Struts 1.2.2的Action源代码.
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