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
     
       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，