利用了jquery的ajax实现二级联互动菜单_javascript技巧

out.println(basePath);
%>

/**
* des:取得二级联动菜单
* autho:exceljava
* date:Nov 20, 2009
* @return
* @throws IOException
*/
public String getJsonCategory() throws IOException{
rfjsons=archiveService.getCategoryByParentID(parentId);//这里从数据库取得数据
net.sf.json.JSONArray jsonObj=net.sf.json.JSONArray.fromObject(rfjsons);//组装成json数据
sendMessage(jsonObj.toString());//向视图push json数据
return null;
}
/**
* des:封装发送json格式的数据回js
* autho:exceljava
* date:Nov 20, 2009
* @param content
* @throws IOException
*/
public void sendMessage(String content) throws IOException{
HttpServletResponse response = ServletActionContext.getResponse();
response.setCharacterEncoding("UTF-8");
response.getWriter().write(content);

}