使用thumbnailator 时部分图片抛异常

net.coobird.thumbnailator.tasks.UnsupportedFormatException: No suitable ImageReader found for source data.

    at net.coobird.thumbnailator.tasks.io.InputStreamImageSource.read(Unknown Source)

    at net.coobird.thumbnailator.tasks.SourceSinkThumbnailTask.read(Unknown Source)

    at net.coobird.thumbnailator.Thumbnailator.createThumbnail(Unknown Source)

    at net.coobird.thumbnailator.Thumbnails$Builder.toOutputStream(Unknown Source)

处理代码如下：

　　　　　　　　　　Blob zp = rs.getBlob("swry_zp");

                if(zp!=null){

                    is=zp.getBinaryStream();

                    if (null != is) {

                        baos = new ByteArrayOutputStream();

                        //对图片进行压缩处理

                        Thumbnails.of(is).forceSize(98, 137).toOutputStream(baos);

                        //将照片进行Base64转码

                        sy.setSwry_zp(Base64.encodeBase64String(baos.toByteArray()));

                    }

                }

从oracle中读出照片信息，照片以blog格式存储，然后以Base64编码返回给客户端，以上错误信息只是在获取某些照片信息时报错，有些照片

这种方式处理是没有问题的．当前是：

Thumbnails.of(is).forceSize(98, 137).toOutputStream(baos);
抛出IO异常，然后rs就中断了：

 while(rs.next()){}

 

其源码中抛出此异常的代码段如下：

public BufferedImage read() throws IOException

        {

                ImageInputStream iis = ImageIO.createImageInputStream(is);

                

                if (iis == null)

                {

                        throw new IOException("Could not open InputStream.");

                }

                

                Iterator<ImageReader> readers = ImageIO.getImageReaders(iis);

                if (!readers.hasNext())

                {

                        throw new UnsupportedFormatException(

                                        UnsupportedFormatException.UNKNOWN,

                                        "No suitable ImageReader found for source data."

                        );

                }

                

                ImageReader reader = readers.next();

                reader.setInput(iis);

                inputFormatName = reader.getFormatName();

                

                BufferedImage img = reader.read(FIRST_IMAGE_INDEX);

                

                iis.close();

                

                return img;

        }

具体原因还没有找出，