通过百度获取天气预报

通过百度获取天气预报
http://htmlparser.com.cn/post/20090917323.html

public class Getweather {  
  
    /**  
     * @param args  
     * @throws ParserException   
     */  
    public static void getWeather(String url) throws ParserException//通过百度获得天气预报，  
    {  
        Parser parser=new Parser("http://www.baidu.com/s?wd=%CC%EC%C6%F8");//URLDecoder码。代表天气自己转换就行  
        NodeFilter filter=new HasAttributeFilter("class","al_tr");  
        NodeList nodelist=parser.extractAllNodesThatMatch(filter);  
        for(String a:nodelist.elementAt(0).toPlainTextString().trim().split(" "))  
        {  
            if(!"".equals(a))  
            System.out.println(a);  
        }  
    }  
    public static void getWeatherImage() throws ParserException//获得天气图片的链接URL  
    {  
        Parser parser=new Parser("http://www.baidu.com/s?wd=%CC%EC%C6%F8");  
        NodeFilter filter=new HasAttributeFilter("class","al_tr");  
        NodeList nodelist=parser.extractAllNodesThatMatch(filter);  
        nodelist=nodelist.elementAt(0).getChildren();  
        NodeFilter filter1=new NodeClassFilter(ImageTag.class);  
        nodelist=nodelist.extractAllNodesThatMatch(filter1,true);  
        for(int i=0;i<nodelist.size();i++)  
        {  
            ImageTag image=(ImageTag) nodelist.elementAt(i);  
            DownLoadImg(image.getImageURL(),String.valueOf(i));  
        }  
    }  
    public static void DownLoadImg(String url,String name)//下载对应的天气图片。  
    {  
        HttpClient hc=new HttpClient();  
        GetMethod gm=new GetMethod(url);  
        try {  
            hc.executeMethod(gm);  
            String path="/home/weather/";  
            File file=new File(path);  
            if(!file.exists())  
            {  
                file.mkdirs();  
            }  
            String imagepath=path+name+".gif";  
            file=new File(imagepath);  
            if(!file.exists())  
            {  
                file.createNewFile();  
            }  
            FileOutputStream out=new FileOutputStream(file);  
            out.write(gm.getResponseBody());  
            out.close();  
        }  catch (Exception e) {  
        }  
    }  
    public static void main(String[] args) throws UnsupportedEncodingException, ParserException {  
        getWeatherImage();  
    }  
  
}