java下载网络图片

package cn.com.songjy.test.db;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.URL;
import java.net.URLConnection;

public class SaveImage {

	public static void main(String[] args) throws IOException {
		BufferedOutputStream bufferedOutputStream = null;
		BufferedInputStream bufferedInputStream = null;
		try {
			URL userver = new URL(
					"http://gerenziliao.os8.cn/hdos/UploadFiles/2010-08/admin/20100817072651150.jpg");

			URLConnection urlConnection = userver.openConnection();

			urlConnection.connect();

			bufferedInputStream = new BufferedInputStream(
					urlConnection.getInputStream());

			byte[] buffer = new byte[1024];//每次读取/写入大小是1k
			
			bufferedOutputStream = new BufferedOutputStream(new FileOutputStream("20100817072651150.jpg"));
			
			for(int len=0; (len=bufferedInputStream.read(buffer))>0;){
				bufferedOutputStream.write(buffer, 0, len);
				//bufferedOutputStream.flush();//bufferedOutputStream关闭时会自动刷新,否则需显示调用该方法
			}
			
		} finally {
			if (null != bufferedOutputStream)
				bufferedOutputStream.close();
			
			if (null != bufferedInputStream)
				bufferedInputStream.close();
		}
	}

}

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