java取网络图片并缩小

package action;    import java.awt.image.BufferedImage;  import java.io.DataInputStream;  import java.io.FileOutputStream;  import java.net.HttpURLConnection;  import java.net.URL;    import com.sun.image.codec.jpeg.JPEGCodec;  import com.sun.image.codec.jpeg.JPEGImageEncoder;    public class Getpic {   public Getpic() {   }     public static boolean saveUrlAs(String fileUrl, String savePath)/* fileUrl网络资源地址 */   {      try {     /* 将网络资源地址传给,即赋值给url */     URL url = new URL(fileUrl);          /* 此为联系获得网络资源的固定格式用法，以便后面的in变量获得url截取网络资源的输入流 */     HttpURLConnection connection = (HttpURLConnection) url.openConnection();     DataInputStream in = new DataInputStream(connection.getInputStream());           BufferedImage src = javax.imageio.ImageIO.read(in);      int width = src.getWidth();               int height = src.getHeight();                     // 边长缩小为二分之一               BufferedImage tag = new BufferedImage(width / 2, height / 2, BufferedImage.TYPE_INT_RGB);               // 绘制缩小后的图               tag.getGraphics().drawImage(src, 0, 0, width / 2, height / 2, null);               FileOutputStream out1 = new FileOutputStream(savePath);               JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out1);               encoder.encode(tag);               out1.close();                  return true;/* 网络资源截取并存储本地成功返回true */      } catch (Exception e) {     System.out.println(e + fileUrl + savePath);     return false;    }   }     public static void main(String[] args) {    Getpic pic = new Getpic();/* 创建实例 */        //需要下载的URL    String photoUrl = "http://hiphotos.baidu.com/yanshennan/pic/item/03a505c8bcbaf6557f3e6f8a.jpg";      // 截取最后/后的字符串    String fileName = photoUrl.substring(photoUrl.lastIndexOf("/"));        //图片保存路径    String filePath = "E:";        /* 调用函数，并且进行传参 */    boolean flag = pic.saveUrlAs(photoUrl, filePath + fileName);        System.out.println("Run ok!\n Get URL file " + flag);    System.out.println(filePath);    System.out.println(fileName);   }    }