WebWork 自定义resultType-优快云博客

本文介绍了一个自定义的DojoMessageResult类，该类实现了Struts2中的Result接口，用于处理Dojo框架的消息输出。通过设置不同的输出样式和内容类型，可以将消息以特定格式发送到客户端。

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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;
}

}