java TIFF转JPG并压缩

来源：互联网发布：卫生间js防水技术交底编辑：程序博客网时间：2024/06/07 01:26

jdk1.5之前的不支持PNG格式的图片，之后支持，下面先来一个传进文件传出文件方式的：

public static void main(String[] args)      {          if(compressPic("D:/Program Files/myftp/1.tif", "D:/Program Files/myftp/ssss.jpg"))          {              System.out.println("压缩成功！");           }          else          {              System.out.println("压缩失败！");           }      }              public static boolean compressPic(String srcFilePath, String descFilePath)      {          File file = null;          BufferedImage src = null;          FileOutputStream out = null;          ImageWriter imgWrier;          ImageWriteParam imgWriteParams;            // 指定写图片的方式为 jpg          imgWrier = ImageIO.getImageWritersByFormatName("jpg").next();          imgWriteParams = new javax.imageio.plugins.jpeg.JPEGImageWriteParam(null);          // 要使用压缩，必须指定压缩方式为MODE_EXPLICIT          imgWriteParams.setCompressionMode(imgWriteParams.MODE_EXPLICIT);          // 这里指定压缩的程度，参数qality是取值0~1范围内，          imgWriteParams.setCompressionQuality((float)0.1);          imgWriteParams.setProgressiveMode(imgWriteParams.MODE_DISABLED);          ColorModel colorModel = ColorModel.getRGBdefault();          // 指定压缩时使用的色彩模式          imgWriteParams.setDestinationType(new javax.imageio.ImageTypeSpecifier(colorModel, colorModel                  .createCompatibleSampleModel(16, 16)));            try          {              if(StringUtils.isBlank(srcFilePath))              {                  return false;              }              else              {                  file = new File(srcFilePath);                  src = ImageIO.read(file);                  out = new FileOutputStream(descFilePath);                    imgWrier.reset();                  // 必须先指定 out值，才能调用write方法, ImageOutputStream可以通过任何 OutputStream构造                  imgWrier.setOutput(ImageIO.createImageOutputStream(out));                  // 调用write方法，就可以向输入流写图片                  imgWrier.write(null, new IIOImage(src, null, null), imgWriteParams);                  out.flush();                  out.close();              }          }          catch(Exception e)          {              e.printStackTrace();              return false;          }          return true;      }

下面是传进byte[]，传出byte[]数组的，稍微修改即可即可，（data为传过来的byte[]数组）

ByteArrayInputStream is = new ByteArrayInputStream(data);    BufferedImage src = null;  ByteArrayOutputStream out = null;  ImageWriter imgWrier;  ImageWriteParam imgWriteParams;    // 指定写图片的方式为 jpg  imgWrier = ImageIO.getImageWritersByFormatName("jpg").next();  imgWriteParams = new javax.imageio.plugins.jpeg.JPEGImageWriteParam(null);  // 要使用压缩，必须指定压缩方式为MODE_EXPLICIT  imgWriteParams.setCompressionMode(imgWriteParams.MODE_EXPLICIT);  // 这里指定压缩的程度，参数qality是取值0~1范围内，  imgWriteParams.setCompressionQuality((float)0.1/data.length);                     imgWriteParams.setProgressiveMode(imgWriteParams.MODE_DISABLED);  ColorModel colorModel = ColorModel.getRGBdefault();  // 指定压缩时使用的色彩模式  imgWriteParams.setDestinationType(new javax.imageio.ImageTypeSpecifier(colorModel, colorModel          .createCompatibleSampleModel(16, 16)));    try  {      src = ImageIO.read(is);      out = new ByteArrayOutputStream(data.length);        imgWrier.reset();      // 必须先指定 out值，才能调用write方法, ImageOutputStream可以通过任何 OutputStream构造      imgWrier.setOutput(ImageIO.createImageOutputStream(out));      // 调用write方法，就可以向输入流写图片      imgWrier.write(null, new IIOImage(src, null, null), imgWriteParams);            out.flush();      out.close();      is.close();      data = out.toByteArray();  }  catch(Exception e)  {      e.printStackTrace();  }

转载链接：http://fandayrockworld.iteye.com/blog/628551

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