获取网络文件的二进制,并写到本地

/**
 * 获取已知文件的二进制,并写到本地
 * @param args
 * @throws IOException
 */
public static void main(String[] args) throws IOException {
	
	 URL url = new URL("http://192.168.18.75:86/group1/M00/00/02/wKgSXlv_oNOAOdDPAAAq0I7ybw8801.png");    
     HttpURLConnection conn = (HttpURLConnection)url.openConnection();    
     conn.setRequestMethod("GET");    
     conn.setConnectTimeout(5 * 1000);    
     InputStream inStream = conn.getInputStream();//通过输入流获取图片数据    
     byte[] buffer = new byte[inStream.available()];//创建缓冲流
     inStream.read(buffer);  //将数据写到缓冲流
     
     //写到本地
     File file=new File("C:\\Users\\sal\\Desktop\\temp\\temp\\tt.png");
     OutputStream out=new FileOutputStream(file);
     out.write(buffer);
     
    
}