private File getFileByUrl(String fileUrl, String suffix) {
ByteArrayOutputStream outStream =new ByteArrayOutputStream();
BufferedOutputStream stream =null;
InputStream inputStream =null;
File file =null;
try {
URL imageUrl =new URL(fileUrl);
HttpURLConnection conn =(HttpURLConnection)imageUrl.openConnection();
conn.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");
inputStream = conn.getInputStream();
byte[] buffer =new byte[1024];
int len =0;
while( (len=inputStream.read(buffer)) != -1 ){
outStream.write(buffer, 0, len);
}
file = File.createTempFile("pattern", "." + suffix);
logger.info("临时文件创建成功={}", file.getCanonicalPath());
FileOutputStream fileOutputStream =new FileOutputStream(file);
stream =new BufferedOutputStream(fileOutputStream);
stream.write(outStream.toByteArray());
} catch (Exception e) {
logger.error("创建人脸获取服务器图片异常", e);
} finally {
try {
if (inputStream !=null) inputStream.close();
if (stream !=null) stream.close();
outStream.close();
} catch (Exception e) {logger.error("关闭流异常", e);}
}
return file;
}
java-图片url转File
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