目前从c#项目转到java,有一个功能是根据图片路径返回图片的字节流,实现如下：
public static string GetImageByUrl(string imagePath)
{
System.Net.WebRequest webreq = System.Net.WebRequest.Create(imagePath);
int port = TypeUtil.ToInt32(CommonUtil.GetAppSetting("ProxyPort"));
webreq.Proxy = new WebProxy(CommonUtil.GetAppSetting("Proxy"), port);
// 超时时间 10s
webreq.Timeout = 10000;
System.Net.WebResponse webres = webreq.GetResponse();
System.IO.Stream stream = webres.GetResponseStream();
System.Drawing.Image img1 = System.Drawing.Image.FromStream(stream);
System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(img1);
return ImgToBase64String(bmp);
}
//图片转为base64编码的字符串
public static string ImgToBase64String(Bitmap bmp)
{
try
{
MemoryStream ms = new MemoryStream();
bmp.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
byte[] arr = new byte[ms.Length];
ms.Position = 0;
ms.Read(arr, 0, (int)ms.Length);
ms.Close();
return Convert.ToBase64String(arr);
}
catch (Exception ex)
{
return null;
}
}
用java进行重写如下
public static byte[] getImageFromURL(String urlPath) {
byte[] data = null;
InputStream inputStream = null;
HttpURLConnection conn = null;
try {
URL url = new URL(urlPath);
conn = (HttpURLConnection) url.openConnection(getProxy());
conn.setDoInput(true);
conn.setRequestMethod(HttpMethod.GET.name());
conn.setConnectTimeout(10000);
inputStream = conn.getInputStream();
if (conn.getResponseCode() == 200) {
data = readInputStream(inputStream);
} else {
data = null;
}
} catch (MalformedURLException e) {
CLogger.error("getImageFromURL", e);
} catch (IOException e) {
CLogger.error("getImageFromURL", e);
} finally {
try {
if (inputStream != null) {
inputStream.close();
}
} catch (IOException e) {
CLogger.error("getImageFromURL", e);
}
conn.disconnect();
}
return data;
}
public static byte[] readInputStream(InputStream is) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int length = -1;
try {
while ((length = is.read(buffer)) != -1) {
baos.write(buffer, 0, length);
}
baos.flush();
} catch (IOException e) {
CLogger.error("readInputStream", e);
}
byte[] data = baos.toByteArray();
try {
is.close();
baos.close();
} catch (IOException e) {
CLogger.error("readInputStream", e);
}
return data;
}
final byte[] image = getImageFromURL(request.getImageUrl());
String imageData = "";
if (ArrayUtil.isNotEmpty(image)) {
//base64加密
imageData = Base64.encodeBase64String(image);
}
最后的结果总是不同，想问一下我该如何写java方法呢?谢谢各位
