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Java_下载图片

2024-07-15 07:23:09   227人阅读

1、定义图片地址

private static String URL_PATH = "http://192.168.100.244:8080/HelloWorld/ZXC.gif";

 

2、获得服务器端的数据，以InputStream形式返回

* * 获得服务器端的数据，以InputStream形式返回 * @return */    public static InputStream getInputStream()    {        InputStream inputStream = null;        HttpURLConnection httpURLConnection = null;        try        {            URL url = new URL(URL_PATH);            if (url != null)            {                httpURLConnection = (HttpURLConnection) url.openConnection();// 打开链接                // 设置连接网络的超时时间                httpURLConnection.setConnectTimeout(3000);                httpURLConnection.setDoInput(true);                //                httpURLConnection.setRequestMethod("GET");                int resposeCode = httpURLConnection.getResponseCode();                if (resposeCode == 200)// 如果请求成功                {                    // 从服务器中获得一个输入流                    inputStream = httpURLConnection.getInputStream();                }            }        }        catch (MalformedURLException e)        {            // TODO Auto-generated catch block            e.printStackTrace();        }        catch (IOException e)        {            // TODO: handle exception            e.printStackTrace();        }        return inputStream;    }

 

 

 

3、保存代码

    public static void saveImageToDisk()    {        InputStream inputStream = getInputStream();        byte[] data = http://www.mamicode.com/new byte[1024];        int len = 0;        FileOutputStream fileOutputStream = null;        try        {            fileOutputStream = new FileOutputStream("C:\\test.gif");            while ((len = inputStream.read(data)) != -1)            {                fileOutputStream.write(data, 0, len);            }        }        catch (FileNotFoundException e)        {            // TODO Auto-generated catch block            e.printStackTrace();        }        catch (IOException e)        {            // TODO Auto-generated catch block            e.printStackTrace();        }        finally        {            if (inputStream != null)            {                try                {                    inputStream.close();                }                catch (IOException e)                {                    // TODO Auto-generated catch block                    e.printStackTrace();                }            }            if (fileOutputStream != null)            {                try                {                    fileOutputStream.close();                }                catch (IOException e)                {                    // TODO Auto-generated catch block                    e.printStackTrace();                }            }        }    }

 


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