WebWork 自定义resultType

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这里自定义一个dojoresult type  ，必须implements  Result 接口，重够Execute 方法

public class DojoMessageResult implements Result {  // 注意点1

private static final String OUTPUT_TYPE_NONE = "none";
 
private static final String OUTPUT_TYPE_LIST = "list";

 private String outputStyle = OUTPUT_TYPE_NONE;

 private String contentType = "text/html";

 public void execute(ActionInvocation invocation) throws Exception {   //注意点2
  HttpServletResponse resp = ServletActionContext.getResponse();
  if(StringUtil.isNotEmpty(contentType)){
   resp.setContentType(contentType);
  }
  List messages = DojoHelper.getResponseDojoMessages();
  for(Iterator iter = messages.iterator();iter.hasNext();){
   DojoHelper.DojoMessage aMsg = (DojoHelper.DojoMessage)iter.next();
   //now we just handle normal messages
   if(!aMsg.isMsgKey){
    /*
     * Encode all response messages into UTF-8 format.
     * And you should decode them using javascripts like this:
     * <pre>
     *  var rtnMsg = unescape(decodeURI(respData));
     * </pre>
     * the decodeURI() help you to decode UTF-8 chars back to your
     * original messages, but some special chars will still encoded
     * ,like '/'(the uri path charactor), so you should use the
     * unescape() function to handle these special charactors
     */
    String content = URLEncoder.encode(aMsg.content,"UTF-8");
    //decode the '+' back to space
    content = content.replace("+"," ");
    if(outputStyle.equals(OUTPUT_TYPE_LIST)){
     content = "<li>"+content+"</li>";
    }
    resp.getWriter().append(content).append('/n');
   }
  }
  resp.flushBuffer();  // 注意点3
  DojoHelper.cleanUp();
  return;
 }

}