通过 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

请参考下面的内容:[code]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!!");
   }

}
[/code]