| | |
| | | import org.springframework.stereotype.Service; |
| | | import org.springframework.web.multipart.MultipartFile; |
| | | |
| | | import java.io.ByteArrayInputStream; |
| | | import java.io.ByteArrayOutputStream; |
| | | import java.io.InputStream; |
| | | import javax.imageio.IIOImage; |
| | | import javax.imageio.ImageIO; |
| | | import javax.imageio.ImageWriteParam; |
| | | import javax.imageio.ImageWriter; |
| | | import javax.imageio.stream.ImageOutputStream; |
| | | import java.awt.*; |
| | | import java.awt.image.BufferedImage; |
| | | import java.io.*; |
| | | import java.time.LocalDate; |
| | | import java.time.LocalDateTime; |
| | | import java.time.format.DateTimeFormatter; |
| | | import java.util.Arrays; |
| | | import java.util.Date; |
| | | |
| | | @Service |
| | |
| | | try { |
| | | // 获取文件的名称 |
| | | String fileName = "sczf/" + file.getOriginalFilename(); |
| | | byte[] newImg = file.getBytes(); |
| | | String originalFilename = file.getOriginalFilename(); |
| | | String fileType = originalFilename.substring(originalFilename.lastIndexOf(".")); |
| | | if (".png".equalsIgnoreCase(fileType) || ".jpg".equalsIgnoreCase(fileType) || ".jpeg".equalsIgnoreCase(fileType)) { |
| | | if (file.getSize() > 2097152) { |
| | | newImg = compressUnderSize(file.getBytes(), 2097152); |
| | | } |
| | | } |
| | | ObjectMetadata objectMetadata = new ObjectMetadata(); |
| | | objectMetadata.setContentType(getcontentType(fileName.substring(fileName.lastIndexOf(".")))); |
| | | // 调用oss的方法实现长传 |
| | | // 第一个参数 bucketName |
| | | // 第二个参数 上传到oss的文件路径和文件名称 |
| | | ossClient.putObject(bucketName, fileName, new ByteArrayInputStream(file.getBytes()), objectMetadata); |
| | | ossClient.putObject(bucketName, fileName, new ByteArrayInputStream(newImg), objectMetadata); |
| | | // 关闭OSSClient。 |
| | | ossClient.shutdown(); |
| | | // 把上传的文件路径返回 (手动拼接) |
| | |
| | | // e.printStackTrace(); |
| | | return null; |
| | | } |
| | | } |
| | | |
| | | /** |
| | | * 按照 宽高 比例压缩 |
| | | * |
| | | * @param imgIs 待压缩图片输入流 |
| | | * @param scale 压缩刻度 |
| | | * @param out 输出 |
| | | * @return 压缩后图片数据 |
| | | * @throws IOException 压缩图片过程中出错 |
| | | */ |
| | | public byte[] compress(byte[] srcImgData, double scale) throws IOException { |
| | | BufferedImage bi = ImageIO.read(new ByteArrayInputStream(srcImgData)); |
| | | int width = (int) (bi.getWidth() * scale); // 源图宽度 |
| | | int height = (int) (bi.getHeight() * scale); // 源图高度 |
| | | |
| | | Image image = bi.getScaledInstance(width, height, Image.SCALE_SMOOTH); |
| | | BufferedImage tag = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); |
| | | |
| | | Graphics g = tag.getGraphics(); |
| | | g.setColor(Color.RED); |
| | | g.drawImage(image, 0, 0, null); // 绘制处理后的图 |
| | | g.dispose(); |
| | | |
| | | ByteArrayOutputStream bOut = new ByteArrayOutputStream(); |
| | | ImageIO.write(tag, "JPEG", bOut); |
| | | |
| | | return bOut.toByteArray(); |
| | | } |
| | | |
| | | /** |
| | | * 将图片压缩到指定大小以内 |
| | | * |
| | | * @param srcImgData 源图片数据 |
| | | * @param maxSize 目的图片大小 |
| | | * @return 压缩后的图片数据 |
| | | */ |
| | | public byte[] compressUnderSize(byte[] srcImgData, long maxSize) { |
| | | double scale = 0.9; |
| | | byte[] imgData = Arrays.copyOf(srcImgData, srcImgData.length); |
| | | |
| | | if (imgData.length > maxSize) { |
| | | do { |
| | | try { |
| | | imgData = compress(imgData, scale); |
| | | |
| | | } catch (IOException e) { |
| | | throw new IllegalStateException("压缩图片过程中出错,请及时联系管理员!", e); |
| | | } |
| | | |
| | | } while (imgData.length > maxSize); |
| | | } |
| | | |
| | | return imgData; |
| | | } |
| | | |
| | | private byte[] readInputStream(InputStream inStream) throws Exception { |
| | |
| | | |
| | | |
| | | public static String getcontentType(String FilenameExtension) { |
| | | if (FilenameExtension.equalsIgnoreCase(".mp4")||FilenameExtension.equalsIgnoreCase(".mov")) { |
| | | if (FilenameExtension.equalsIgnoreCase(".mp4") || FilenameExtension.equalsIgnoreCase(".mov")) { |
| | | return "video/mp4"; |
| | | } |
| | | if (FilenameExtension.equalsIgnoreCase(".bmp")) { |