java 天气预报

1. 可以在页面直接访问某个连接地址如：

• http://weather.265.com/weather.htm
• http://minisite.qq.com/Weather/news_new.html
• http://weather.qq.com/inc/ss258.htm
• http://news.sina.com.cn/iframe/weather/130101.html

2. 使用rss获取天气信息：

      rss地址：http://weather.raychou.com/?/list/

      下面以宜昌为例：http://weather.raychou.com/?/detail/57461/rss

 

      注：实现代码比较简单主要为了说明用法

package com.hw.msds.base.util;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

import com.hw.msds.base.struts.BaseAction;
import com.hw.msds.realtimemonitor.businessimp.BaseParser;

public class WeatherAction extends BaseAction {
	
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		
		BaseParser bp = new BaseParser();
		bp.setSite("http://weather.raychou.com/?/detail/57461/rss");
		Document document = bp.getDocument();
		
		StringBuffer sb = new StringBuffer();
		NodeList title = document.getElementsByTagName("title");
		if (title != null) {
			int len = title.getLength();
			if (len > 0) {
				Node node = title.item(0);
				sb.append(node.getTextContent() + "：");
			}
		}
		
		NodeList description = document.getElementsByTagName("description");
		if (description != null) {
			int len = description.getLength();
			if (len > 1) {
				Node node = description.item(1);
				sb.append(node.getTextContent());
			}
		}
		printResponseText(response, sb.toString());
		return null;
	}
	
}

 

 

 

<action path="/weather" type="com.hw.msds.base.util.WeatherAction"></action>

 

    界面上我们使用jquery来发送请求，并获取天气信息：

		<script type="text/javascript" src="<%=basePath%>js/jquery-1.2.6.min.js"></script>

               $(document).ready(function () {
			$.get("<%=basePath%>weather.do", function (data) {
				$('#weather').html(data);
		        });
		});

               <span id="weather">未获取到天气信息</span>

 

完毕！