HttpClient下载文件

需要有的Jar;

• commons-httpclient-3.1.jar

• commons-logging-1.04.jar

• commons-codec-1.3.jar
  代码：

  public class HttpClientTest {
  
    private final static String REMOTE_FILE_URL = "http://www.gjt.org/download/time/java/tar/javatar-2.5.tar.gz";
  
    private final static int BUFFER = 1024;
  
    public static void main(String[] args) {
  
       HttpClient client = new HttpClient();
       GetMethod httpGet = new GetMethod(REMOTE_FILE_URL);
        try {
            client.executeMethod(httpGet);
  
            InputStream in = httpGet.getResponseBodyAsStream();
  
            FileOutputStream out = new FileOutputStream(new File("E:\\test_jar\\javatar-2.5.tar.gz"));
  
            byte[] b = new byte[BUFFER];
            int len = 0;
            while((len=in.read(b))!= -1){
                out.write(b,0,len);
            }
            in.close();
            out.close();
  
        }catch (HttpException e){
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }finally{
            httpGet.releaseConnection();
        }
        System.out.println("download, success!!");
       }
  }