研究:Liferay研究(五)Liferay中页面Ajax的简单调用

在Liferay中已经把jQuery1.3加入了,而需要调用的话该怎么样调用?

下面以一个简单的加入收藏为例子:

在jsp页面中引入portlet标签

<%@ taglib uri="http://java.sun.com/portlet_2_0" prefix="portlet" %>

在Jsp中加入如下Javascript代码

<script language="javascript">
	var url = "<%=request.getContextPath()%>/portlet_action/islike/view?para=favor";

	function insertfavorite<portlet:namespace />() {
		jQuery.ajax(
			{
				type: "get",
				url: url,
				dataType:"html",
				success: function(msg){
					if(msg=='isok'){
						alert("收藏成功");
					}
					if(msg=='favorited'){
					alert("您已经收藏了");
					}
				},		
				error: function(){
					alert("收藏失败");
				}
			}
		); 
	
	}
</script>

<a href="#" title="收藏该应用"> <img
                                                src="<%=request.getContextPath()%>/resources/images/button_fav.gif"
                                                onclick="insertfavorite<portlet:namespace />()" /> </a>

在action中

if (StringUtils.isNotEmpty(send)) {
            // ajax
            if (StringUtils.equals("favor", send)) {
               PrintWriter out = response.getWriter();
                response.setContentType("text/html; charset=utf-8");
                response.setCharacterEncoding("utf-8");

                               System.out.println("Favaid=====>" + aid);
                String title = request.getParameter("title");
                System.out.println("title====>" + title);
                boolean check = productinfoService.checkFav(userid, sid);
                if (check)
                    out.print("favorited");
                else
                    out.print("isok");

                return null;
            }

}

则可以调用相应的Ajax