java根据网络地址保存图片的方法

import java.io.BufferedInputStream;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.net.HttpURLConnection;import java.net.URL;import java.util.Random; import sun.misc.BASE64Decoder; /** * 常用工具类 * @author 胡汉三 * * 2014-11-21 上午10:16:10 */public class Tools {   public static void main(String[] args) throws Exception { String str = "http://api.map.baidu.com/staticimage?center=106.720568,26.585137&width=697&height=550&markers=106.729443,26.593795&markerStyles=-1,http://api.map.baidu.com/images/marker_red.png,-1,23,25&zoom=15&labels=106.730143,26.594695&labelStyles=师大某小区包子铺,1,14,0xFFFFFF,0xEC624D,1"; Tools dw=new Tools();   dw.saveToFile(str,"E://"+AnguoFileUtils.getRandomFileName()+".png");  }  /** * 根据网络地址保存图片 * @param destUrl 网络地址 * @param filePath 图片存储路径 */ public void saveToFile(String destUrl,String filePath) {  FileOutputStream fos = null;  BufferedInputStream bis = null;  HttpURLConnection httpUrl = null;  URL url = null;  int BUFFER_SIZE = 1024;  byte[] buf = new byte[BUFFER_SIZE];  int size = 0;  try {   url = new URL(destUrl);   httpUrl = (HttpURLConnection) url.openConnection();   httpUrl.connect();   bis = new BufferedInputStream(httpUrl.getInputStream());   fos = new FileOutputStream(filePath);   while ((size = bis.read(buf)) != -1) {    fos.write(buf, 0, size);   }   fos.flush();  } catch (IOException e) {  } catch (ClassCastException e) {  } finally {   try {   fos.close();   bis.close();   httpUrl.disconnect();   } catch (IOException e) {   } catch (NullPointerException e) {   }  }  }  }