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[英]javax.imageio.IIOException: Can't create output stream! (in java)
[英]javax.imageio.IIOException: Not a JPEG stream (starts with: 0x0003, expected SOI: 0xffd8)
将inputStream转换为bufferImage时遇到问题。 BufferedImage crfPersonImg始终为null,并且在Raster行发生异常raster raster = reader1.readRaster(0,null); 。 到目前为止,这是我的代码
//code for getting ByteArray From Blob column in Oracle DB.
List<Object[]> userRoleList = commonDao.findByNativeSQL(selectSQL
, new Object[] {examCd, examPeriod, fromMemNo, toMemNo});
for(Object[] row : userRoleList){
CertificateDtlsVO cdObj = new CertificateDtlsVO();
cdObj.setExmCd(Integer.parseInt(row[0].toString()));
cdObj.setExmDsc(row[1].toString());
cdObj.setMemNo(row[2].toString());
cdObj.setMemNm(row[3].toString());
cdObj.setCertNo(row[4].toString());
cdObj.setCertDt(row[5].toString());
cdObj.setPrtNo(row[6].toString());
cdObj.setSylCd(row[7].toString());
cdObj.setNumOfTime(Integer.parseInt(row[8].toString()));
cdObj.setMemType(row[9].toString());
cdObj.setClassGrade(row[10].toString());
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ObjectOutputStream oos = new ObjectOutputStream(baos);
oos.writeObject(row[11]);
cdObj.setPhoto(baos.toByteArray());
baos = new ByteArrayOutputStream();
oos = new ObjectOutputStream(baos);
oos.writeObject(row[12]);
cdObj.setSign(baos.toByteArray());
cdObj.setPhotoBuffImg(ImageIO.read(new ByteArrayInputStream(baos.toByteArray())));
oos.flush();
oos.close();
memCertfDtlsList.add(cdObj);
}
//将字节数组转换为BufferImage的代码
InputStream in = new ByteArrayInputStream(photo);
Iterator<ImageReader> readers = ImageIO.getImageReadersByFormatName("JPEG");
ImageReader reader1 = null;
while (readers.hasNext()) {
reader1 = readers.next();
if (reader1.canReadRaster()) {
break;
}
}
//Stream the image file
ImageInputStream input = ImageIO.createImageInputStream(in);
reader1.setInput(input);
//Read the image raster
Raster raster = reader1.readRaster(0, null);
//Create a new RGB image
BufferedImage bi = new BufferedImage(raster.getWidth(), raster.getHeight(),
BufferedImage.TYPE_4BYTE_ABGR);
//Fill the new image with the old raster
bi.getRaster().setRect(raster);
BufferedImage crfPersonImg = ImageIO.read(in);
javax.imageio.IIOException:在com.twelvemonkeys.imageio.plugins处com.twelvemonkeys.imageio.plugins.jpeg.JPEGSegmentImageInputStream.streamInit(JPEGSegmentImageInputStream.java:247)处不是JPEG流(开头为:0x0003,预期的SOI:0xffd8) .jpeg.JPEGSegmentImageInputStream.fetchSegment(JPEGSegmentImageInputStream.java:71)位于com.twelvemonkeys.imageio.plugins.jpeg.JPEGSegmentImageInputStream.repositionAsNecessary(JPEGSegmentImageInputStream.java:267)
感谢@haraldK,通过更改从blob列获取字节数组的代码解决了我的问题。
List<Object[]> userRoleList = commonDao.findByNativeSQL(selectSQL
, new Object[] {examCd, examPeriod, fromMemNo, toMemNo});
for(Object[] row : userRoleList){
CertificateDtlsVO cdObj = new CertificateDtlsVO();
cdObj.setExmCd(Integer.parseInt(row[0].toString()));
cdObj.setExmDsc(row[1].toString());
cdObj.setMemNo(row[2].toString());
cdObj.setMemNm(row[3].toString());
cdObj.setCertNo(row[4].toString());
cdObj.setCertDt(row[5].toString());
cdObj.setPrtNo(row[6].toString());
cdObj.setSylCd(row[7].toString());
cdObj.setNumOfTime(Integer.parseInt(row[8].toString()));
cdObj.setMemType(row[9].toString());
cdObj.setClassGrade(row[10].toString());
InputStream photoBlob = ((Blob) row[11]).getBinaryStream();
InputStream signBlob = ((Blob) row[12]).getBinaryStream();
cdObj.setPhoto(IOUtils.toByteArray(photoBlob));
cdObj.setSign(IOUtils.toByteArray(signBlob));
memCertfDtlsList.add(cdObj);
}
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