测试环境,用http发送get请求文件服务器下载文件,显示找不到UnknownHostException,但是用a标签href可以直接访问下载

UnknownHostException异常
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- 小达哥的垃圾桶 2019-08-23 09:25关注
//链接url下载图片 public static void downloadPicture(String urlList,String path) { URL url = null; try { url = new URL(urlList); DataInputStream dataInputStream = new DataInputStream(url.openStream()); FileOutputStream fileOutputStream = new FileOutputStream(new File(path)); ByteArrayOutputStream output = new ByteArrayOutputStream(); byte[] buffer = new byte[1024]; int length; while ((length = dataInputStream.read(buffer)) > 0) { output.write(buffer, 0, length); } fileOutputStream.write(output.toByteArray()); dataInputStream.close(); fileOutputStream.close(); } catch (MalformedURLException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } }
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