Java下载图片

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import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.text.SimpleDateFormat;
import java.util.Date;

public class DownloadImage2{
    public static void main(String args[]){
        String name = new SimpleDateFormat("yyyyMMddHHmmssSSS").format(new Date());
        String path = "D:/image/";
        File dir = new File(path);
        if(!dir.exists())
             dir.mkdir();
        path += name + ".jpg";
        download("http://i2.dpfile.com/2006-03-15/26040_b.jpg",path);
    }
    public static void download(String strUrl,String path){
       URL url = null;
       try {
              url = new URL(strUrl);
       } catch (MalformedURLException e2) {
             e2.printStackTrace();
             return;
       }

       InputStream is = null;
        try {
            is = url.openStream();
        } catch (IOException e1) {
            e1.printStackTrace();
            return;
        }

        OutputStream os = null;
        try{
            os = new FileOutputStream(path);
            int bytesRead = 0;
            byte[] buffer = new byte[8192];
            while((bytesRead = is.read(buffer,0,8192))!=-1){
            os.write(buffer,0,bytesRead);
       }
       }catch(FileNotFoundException e){
           e.printStackTrace();
           return;
       } catch (IOException e) {
           e.printStackTrace();
           return;
      }
    }
}

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