java依据图片的url地点下载图片到当地,已知图片的url地点,经由过程java代码下载到当地,直接上代码。
/** * 抓取网上的图片 * [延长]竟然都支撑下载网页了 * @param imgSrc * @param filePath */ public static void downloadImgByNet(String imgSrc,String filePath,String fileName){ try{ URL url = new URL(imgSrc); URLConnection conn = url.openConnection(); //设置超时候为3秒 conn.setConnectTimeout(3*1000); //防备屏障顺序抓取而返回403毛病 conn.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)"); //输出流 InputStream str = conn.getInputStream(); //掌握流的大小为1k byte[] bs = new byte[1024]; //读取到的长度 int len = 0; //是不是须要建立文件夹 File saveDir = new File(filePath); if(!saveDir.exists()){ saveDir.mkdir(); } File file = new File(saveDir+File.separator+fileName); //实例输出一个对象 FileOutputStream out = new FileOutputStream(file); //轮回推断,假如读取的个数b为空了,则is.read()要领返回-1,细致请参考InputStream的read(); while ((len = str.read(bs)) != -1) { //将对象写入到对应的文件中 out.write(bs, 0, len); } //革新流 out.flush(); //封闭流 out.close(); str.close(); System.out.println("下载胜利"); }catch (Exception e) { e.printStackTrace(); } } public static void main(String[] args) { //下载图片 //downloadImgByNet("http://manyou.189.cn/images/flag/md276.jpg","d:/resource/images/diaodiao/country/","缅甸.jpg"); //下载网页 downloadImgByNet("http://manyou.189.cn/country/country.do?idCode=md276","d:/resource/images/diaodiao/country/","缅甸.html"); }
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