java.net.URL类的用法

Question

给出一个类子！

Answer 1

public class Test {    public static void main(String[] args) {        
        try {
            URL url = new URL("http://weather.xcyh.org/xml");  
            HttpURLConnection conn = (HttpURLConnection)url.openConnection();
            BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream()));  
            String line = "",result = "";            
            while( (line =br.readLine()) != null ){  
                result +="\n"+line;  
            }  
            
             result = new String(result.getBytes(),"GBK");
             System.out.println(result);        } catch (Exception e) {
            e.printStackTrace();
            
        }  
    }}

Answer 2

 public String getWeather(String URL,String cityName, String fileAddr) {
        // 获取google上的天气情况，写入文件
        try {
            URL url = new URL(URL + cityName);
            InputStream inputstream = url.openStream();
            String s, str;
            BufferedReader in = new BufferedReader(new InputStreamReader(
                    inputstream));
            StringBuffer stringbuffer = new StringBuffer();
            Writer out = new BufferedWriter(new OutputStreamWriter(
                    new FileOutputStream(fileAddr), "utf-8"));
            while ((s = in.readLine()) != null) {
                stringbuffer.append(s);
            }
            str = new String(stringbuffer);
            out.write(str);
            out.close();
            in.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }