JAVA RGB转CMYK 源码（支持格式转换）

Java CMYK转RGB源码网上很多，但是RGB转CMYK源码网上很少，那么多是只提供公式，要么提供依赖文件不全。这两天搜索很好久，终于找到一个可行方法。

项目使用maven搭建，依赖的工具包如下。在pom.xm文件添加该包依赖

      <dependency>            <groupId>javax.media.jai</groupId>            <artifactId>com.springsource.javax.media.jai.codec</artifactId>            <version>1.1.3</version>        </dependency>

package cn.soqi.mp.qihome.controller;import cn.soqi.mp.api.qihome.AjaxResult;import cn.soqi.mp.app.listener.AppContext;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestParam;import org.springframework.web.bind.annotation.ResponseBody;import org.springframework.web.multipart.MultipartFile;import sun.misc.BASE64Decoder;import sun.misc.BASE64Encoder;import javax.imageio.ImageIO;import javax.media.jai.JAI;import javax.servlet.ServletContext;import javax.servlet.http.HttpServletRequest;import java.awt.color.ColorSpace;import java.awt.color.ICC_ColorSpace;import java.awt.color.ICC_Profile;import java.awt.image.BufferedImage;import java.awt.image.ColorConvertOp;import java.io.*;@Controller@RequestMapping("/mg/image")public class TestImageBinary {static BASE64Encoder encoder = new sun.misc.BASE64Encoder();static BASE64Decoder decoder = new sun.misc.BASE64Decoder();@RequestMapping("/page.html")public String intoUploadPage(){return "/mg/management/rgb2cmyk";}@RequestMapping("/upload.do")@ResponseBodypublic AjaxResult uploadOneImage(HttpServletRequest request,@RequestParam(required = false) String targetName,@RequestParam("pic") MultipartFile file) throws IOException{AjaxResult result = new AjaxResult();InputStream input = null ;OutputStream output = null ;if(file.isEmpty()==false){input=file.getInputStream();}//1 先将用户上传的文件保存到本地String temFileName=mkFile(file.getOriginalFilename(),"original");File saveFile = new File(temFileName);output = new FileOutputStream(saveFile) ;int temp = 0 ;byte data[] = new byte[512] ;while((temp=input.read(data,0,512))!=-1){output.write(data) ;    // 分块保存}input.close() ;output.close() ;//endString targetFileName=null;if(targetName!=null&&!targetName.equals("")) {targetFileName = mkFile(targetName, "after_transfer");}InputStream inputStream = new FileInputStream(saveFile);rgbToCmyk(inputStream, saveFile.getAbsolutePath(), targetFileName);result.setSuccess(true);result.setContent("上传成功并转码");return result;}static String getImageBinary(String fileName){File f = new File(fileName);BufferedImage bi;try {bi = ImageIO.read(f);String fileType=getFileType(fileName);ByteArrayOutputStream outputStream = new ByteArrayOutputStream();ImageIO.write(bi, fileType, outputStream);byte[] bytes = outputStream.toByteArray();return encoder.encodeBuffer(bytes).trim();} catch (IOException e) {e.printStackTrace();}return null;}/** * 获取文件类型 * @param fileName 文件全名 * @return */static String getFileType(String fileName){return fileName.substring(fileName.lastIndexOf(".")+1,fileName.length());}/** * 将其他格式的图片转换成CDR或其它文件格式 * @param sourceFileName  上传文件名 * @param newFileName  新文件名 */static void base64StringToImage(String sourceFileName,String newFileName){try {String base64String =getImageBinary(sourceFileName);byte[] bytes1 = decoder.decodeBuffer(base64String);ByteArrayInputStream inputStream = new ByteArrayInputStream(bytes1);BufferedImage bi1 =ImageIO.read(inputStream);File w2 = new File(newFileName);//可以是jpg,png,gif格式ImageIO.write(bi1, getFileType(sourceFileName), w2);} catch (IOException e) {e.printStackTrace();}}/** * 创建文件名 * @param fileName 文件名 * @param parentDir 可变参数，文件目录（在当前路径下新建目录） * @return 返回文件绝对路径 */static String mkFile(String fileName,String...parentDir) throws IOException {StringBuffer absoluteFileName = getCurrentPath();if(parentDir.length>0){absoluteFileName.append(File.separator);absoluteFileName.append(parentDir[0]);File newDir=new File(absoluteFileName.toString());if(!newDir.exists()){newDir.mkdirs();}}absoluteFileName.append(File.separator);absoluteFileName.append(fileName);String templateName=absoluteFileName.toString();File file=new File(templateName);if(!file.exists()){file.createNewFile();}return absoluteFileName.toString();}/** * 获取当前项目运行路径 * @return */public static StringBuffer getCurrentPath(){StringBuffer absoluteFileName = new StringBuffer();ServletContext scontext = AppContext.getInstance().getContext();absoluteFileName.append(scontext.getRealPath("/"));absoluteFileName.append("WEB-INF");return absoluteFileName;}/** * 将rgb图片转化为cmyk图片 * @param fileName 文件名 * @param format 转化之后的文件格式(默认tif格式) * @throws IOException */public static void rgbToCmyk(String fileName,String...format) throws IOException{BufferedImage rgbImage = ImageIO.read(new File(fileName));BufferedImage cmykImage = null;ColorSpace cpace = new ICC_ColorSpace(ICC_Profile.getInstance(TestImageBinary.class.getClassLoader().getResourceAsStream("common/ISOcoated_v2_300_eci.icc")));ColorConvertOp op = new ColorConvertOp(rgbImage.getColorModel().getColorSpace(), cpace, null);cmykImage = op.filter(rgbImage, null);String newFileName=null;newFileName = fileName.substring(0, fileName.lastIndexOf("."));if(format.length>0) {JAI.create("filestore", cmykImage, newFileName + format[0], format[0]);}else {JAI.create("filestore", cmykImage, newFileName + "tif", "TIFF");}}/** * 将图片为rgb转化为cmyk * @param inputStream 图片输入流 * @param fileName 图片名词(绝对路径) * @param newFileName 图片保存路径（绝对路径）（如果没有参数，则生成的图片在当前目录下，且格式为tif） * @throws IOException */public static void rgbToCmyk(InputStream inputStream,String fileName,String...newFileName) throws IOException{BufferedImage rgbImage = ImageIO.read(inputStream);BufferedImage cmykImage = null;ColorSpace cpace = new ICC_ColorSpace(ICC_Profile.getInstance(TestImageBinary.class.getClassLoader().getResourceAsStream("ISOcoated_v2_300_eci.icc")));ColorConvertOp op = new ColorConvertOp(rgbImage.getColorModel().getColorSpace(), cpace, null);cmykImage = op.filter(rgbImage, null);if(newFileName.length>0&&newFileName[0]!=null) {String targetFileName=fileName.substring(0,fileName.lastIndexOf(".")+1)+"tif";JAI.create("filestore", cmykImage,targetFileName,"TIFF");cmykImage.flush();base64StringToImage(targetFileName,newFileName[0]);//转成对应格式File file=new File(fileName);if(file.exists())file.delete();}else {String targetFileName=fileName.substring(0,fileName.lastIndexOf(".")+1)+"tif";JAI.create("filestore", cmykImage, targetFileName, "TIFF");}}}

项目需要依赖ISOcoated_v2_300_eci.icc文件，ISOcoated_v2_300_eci.icc是一个工业的色彩标准文件。