InputStream is = request.getSession().getServletContext().getResourceAsStream("/WEB-INF/swdjzbg.png"); ByteArrayOutputStream baos = newByteArrayOutputStream(); int len = 1024; byte tmp [] = new byte[len]; inti ; while((i=is.read(tmp, 0, len))>0){ baos.write(tmp, 0, i); } byte imgs[] = baos.toByteArray();
InputStream转为byte数组
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