快速、简便的使用AJAX技术操作的三部曲

public String hotWeek() throws Exception{ 

HttpServletResponse response = ServletActionContext.getResponse(); 
response.setContentType("text/xml(标准化越来越近了); charset=gb2312"); 
PrintWriter out = response.getWriter(); 

StringBuffer insertHotHtml = new StringBuffer(); 
insertHotHtml.append(" <table width=171 border=0 align=center cellpadding=0 
cellspacing=0> "); 

insertHotHtml.append("<tr> "); 
insertHotHtml.append("<td width=23 height=25></td> "); 
insertHotHtml.append("</tr> "); 

insertHotHtml.append("</table> "); 

out.print(insertHotHtml.toString()); //返回一个有表格的HTTP报文 

return null; 
}