大文件文件转成 byte[]

            public static byte[] input2byte(InputStream inStream) throws IOException {
               ByteArrayOutputStream swapStream = new ByteArrayOutputStream();
               byte[] buff = new byte[inStream.available()];
                     方法1：
              /* int rc = 0;
               while ((rc = inStream.read(buff, 0, inStream.available())) > 0) {
                   swapStream.write(buff, 0, rc);
               }*/
                     方法2：
               int rc = 0;
               while((rc = inStream.read(buff))!=-1){
                   swapStream.write(buff, 0, rc);
                }
               byte[] in2b = swapStream.toByteArray();
               swapStream.close();
               return in2b;
           }

大文件文件转成 byte[]

原文：http://blog.51cto.com/1008610086/2350390