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

Weatheraction.java代码
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;  
    }  
      
} 

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;
}

}





配置信息代码
<action path="/weather" type="com.hw.msds.base.util.WeatherAction"></action> 

<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：

Js代码
<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>