URLConnection

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public static byte[] getImageFileByURL(String url) throws TpDealException{
long startTime = System.currentTimeMillis();//start time

if(StringUtils.isEmpty(url))return null;
byte[] content = null;
BufferedInputStream in=null;
ByteArrayOutputStream out = null;
URL u;
for(int i = 1; i <= RETRY_TIMES; ++i){
try {
u = new URL(url);
URLConnection uc = u.openConnection();
uc.setConnectTimeout(3000);
uc.setReadTimeout(5000);
in = new BufferedInputStream(uc.getInputStream(), 1024);
byte[] bytes = new byte[1024];
int len;
out = new ByteArrayOutputStream();
while ((len = in.read(bytes)) > 0) {
out.write(bytes, 0, len);
}
in.close();
content = out.toByteArray();
break;
} catch (MalformedURLException e) {
logger.error("ImageUtil_getImageFileByURL exception, use time: " + (System.currentTimeMillis() - startTime) + ", URL = " + url, e);
if(i == RETRY_TIMES){
throw new TpDealException(TpDealExceptionType.WENAN, DealExceptionMsg.IMG_URL_EXCEPTION.getIndex(),
e.toString());
}
} catch (IOException e) {
logger.error("ImageUtil_getImageFileByURL exception, use time: " + (System.currentTimeMillis() - startTime) + ", URL = " + url, e);
if(i == RETRY_TIMES){
throw new TpDealException(TpDealExceptionType.WENAN, DealExceptionMsg.IMG_GET_EXCEPTION.getIndex(),
e.toString());
}
}finally{
if (in != null)
try {
in.close();
} catch (IOException e) {
logger.error("ImageUtil_getImageFileByURL exception, use time: " + (System.currentTimeMillis() - startTime) + ", URL = " + url, e);

throw new TpDealException(TpDealExceptionType.WENAN, DealExceptionMsg.IMG_STREAM_IN_EXCEPTION.getIndex(),
e.toString());
}
if (out != null)
try {
out.close();
} catch (IOException e) {
logger.error("ImageUtil_getImageFileByURL exception, use time: " + (System.currentTimeMillis() - startTime) + ", URL = " + url, e);

throw new TpDealException(TpDealExceptionType.WENAN,

DealExceptionMsg.IMG_STREAM_OUT_EXCEPTION.getIndex(), e.toString());

}
}
}
logger.info("ImageUtil_getImageFileByURL successfully, use time: " + (System.currentTimeMillis() - startTime) + ", URL = " + url);
return content;
}

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