How to use

Transcoder

in

org.apache.batik.transcoder

 import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;

import org.apache.batik.transcoder.Transcoder;
import org.apache.batik.transcoder.TranscoderException;
import org.apache.batik.transcoder.TranscoderInput;
import org.apache.batik.transcoder.TranscoderOutput;
import org.apache.fop.svg.PDFTranscoder;

public class Test {
  public static void main(String[] argv) throws TranscoderException, FileNotFoundException {
    Transcoder transcoder = new PDFTranscoder();
    TranscoderInput transcoderInput = new TranscoderInput(new FileInputStream(new File("/tmp/test.svg")));
    TranscoderOutput transcoderOutput = new TranscoderOutput(new FileOutputStream(new File("/tmp/test.pdf")));
    transcoder.transcode(transcoderInput, transcoderOutput);
  }
}

public void handleOption() {
  index++;
  transcoder.addTranscodingHint(SVGTranscoder.KEY_FORMAT, Boolean.FALSE);
}

/**
 * Transcode a document into a file using the given transcoder.
 *
 * @param file Output file
 * @param transcoder Transcoder to use
 * @throws IOException On write errors
 * @throws TranscoderException On input/parsing errors
 */
protected void transcode(File file, Transcoder transcoder) throws IOException, TranscoderException {
 // Disable validation, performance is more important here (thumbnails!)
 transcoder.addTranscodingHint(XMLAbstractTranscoder.KEY_XML_PARSER_VALIDATING, Boolean.FALSE);
 SVGDocument doc = cloneDocument();
 TranscoderInput input = new TranscoderInput(doc);
 OutputStream out = new BufferedOutputStream(new FileOutputStream(file));
 TranscoderOutput output = new TranscoderOutput(out);
 transcoder.transcode(input, output);
 out.flush();
 out.close();
}

transcoder.setTranscodingHints(hints);

/**
 * Transcode a document into a file using the given transcoder.
 *
 * @param file Output file
 * @param transcoder Transcoder to use
 * @throws IOException On write errors
 * @throws TranscoderException On input/parsing errors
 */
protected void transcode(File file, Transcoder transcoder) throws IOException, TranscoderException {
 // Disable validation, performance is more important here (thumbnails!)
 transcoder.addTranscodingHint(XMLAbstractTranscoder.KEY_XML_PARSER_VALIDATING, Boolean.FALSE);
 SVGDocument doc = cloneDocument();
 TranscoderInput input = new TranscoderInput(doc);
 OutputStream out = new BufferedOutputStream(new FileOutputStream(file));
 TranscoderOutput output = new TranscoderOutput(out);
 transcoder.transcode(input, output);
 out.flush();
 out.close();
}

transcoder.setTranscodingHints(hints);

public void handleOption() {
  index++;
  transcoder.addTranscodingHint(SVGTranscoder.KEY_FORMAT, Boolean.FALSE);
}

/**
 * 将SVG输入流转换并写入到JPEG输出流
 *
 * @param reader SVG字符流
 * @param output JPEG输出流
 * @throws TranscoderException 转换异常
 */
public static void svg2jpeg(Reader reader, OutputStream output) throws TranscoderException {
  if (reader == null) {
    throw new IllegalArgumentException("Reader must not be null");
  }
  if (output == null) {
    throw new IllegalArgumentException("OutputStream must not be null");
  }
  Transcoder transcoder = new JPEGTranscoder();
  transcoder.transcode(new TranscoderInput(reader), new TranscoderOutput(output));
}

/**
 * Transcodes the image using the transcoder specified
 * 
 * @param t
 * @param svgGenerator
 * @param useCSS
 * @param rect
 * @param fos
 * @throws IOException
 * @throws TranscoderException
 */
public static void transcode(Transcoder t, SVGGraphics2D svgGenerator, boolean useCSS, Rectangle rect, FileOutputStream fos) throws IOException, TranscoderException {
  PipedWriter pout = new PipedWriter();
  BufferedReader rin = new BufferedReader(new PipedReader(pout));
  new Piper(svgGenerator, useCSS, pout).start();
  t.addTranscodingHint(JPEGTranscoder.KEY_HEIGHT, Float.valueOf(rect.height));
  t.addTranscodingHint(JPEGTranscoder.KEY_WIDTH, Float.valueOf(rect.width));
  t.transcode(new TranscoderInput(rin), new TranscoderOutput(fos));
}

transcoder.setTranscodingHints(hints);

public void handleOption() {
  index++;
  if (index >= arguments.length) {
    throw new IllegalArgumentException();
  }
  String s = arguments[index++];
  transcoder.addTranscodingHint(SVGTranscoder.KEY_XML_DECLARATION, s);
}

/**
 * 将SVG输入流转换并写入到JPEG输出流
 *
 * @param input  SVG输入流
 * @param output JPEG输出流
 * @throws TranscoderException 转换异常
 */
public static void svg2jpeg(InputStream input, OutputStream output) throws TranscoderException {
  if (input == null) {
    throw new IllegalArgumentException("InputStream must not be null");
  }
  if (output == null) {
    throw new IllegalArgumentException("OutputStream must not be null");
  }
  Transcoder transcoder = new JPEGTranscoder();
  transcoder.transcode(new TranscoderInput(input), new TranscoderOutput(output));
}

  transcoder.addTranscodingHint(PNGTranscoder.KEY_BACKGROUND_COLOR, Color.WHITE);
} else {
  transcoder = new JPEGTranscoder();
  transcoder.addTranscodingHint(JPEGTranscoder.KEY_QUALITY, jpegQuality);
  transcoder.transcode(transcoderInput, transcoderOutput);

public void handleOption() {
  index++;
  if (index >= arguments.length) {
    throw new IllegalArgumentException();
  }
  String s = arguments[index++];
  transcoder.addTranscodingHint(SVGTranscoder.KEY_XML_DECLARATION, s);
}

/**
 * 将SVG输入流转换并写入到PNG输出流
 *
 * @param reader SVG字符流
 * @param output PNG输出流
 * @throws TranscoderException 转换异常
 */
public static void svg2png(Reader reader, OutputStream output) throws TranscoderException {
  if (reader == null) {
    throw new IllegalArgumentException("Reader must not be null");
  }
  if (output == null) {
    throw new IllegalArgumentException("OutputStream must not be null");
  }
  Transcoder transcoder = new PNGTranscoder();
  transcoder.transcode(new TranscoderInput(reader), new TranscoderOutput(output));
}

public void handleOption() {
  index++;
  if (index >= arguments.length) {
    throw new IllegalArgumentException();
  }
  String s = arguments[index++];
  transcoder.addTranscodingHint(SVGTranscoder.KEY_PUBLIC_ID, s);
}

/**
 * 将SVG输入流转换并写入到PNG输出流
 *
 * @param input  SVG输入流
 * @param output PNG输出流
 * @throws TranscoderException 转换异常
 */
public static void svg2png(InputStream input, OutputStream output) throws TranscoderException {
  if (input == null) {
    throw new IllegalArgumentException("InputStream must not be null");
  }
  if (output == null) {
    throw new IllegalArgumentException("OutputStream must not be null");
  }
  Transcoder transcoder = new PNGTranscoder();
  transcoder.transcode(new TranscoderInput(input), new TranscoderOutput(output));
}

public static void setTranscoderStringHint(Transcoder transcoder,
                     String property,
                     TranscodingHints.Key key){
  String str = System.getProperty(property);
  if(str != null){
    transcoder.addTranscodingHint(key, str);
  }
}

/**
 * 将SVG输入流转换并写入到PDF输出流
 *
 * @param reader SVG字符流
 * @param output PDF输出流
 * @throws TranscoderException 转换异常
 */
public static void svg2pdf(Reader reader, OutputStream output) throws TranscoderException {
  if (reader == null) {
    throw new IllegalArgumentException("Reader must not be null");
  }
  if (output == null) {
    throw new IllegalArgumentException("OutputStream must not be null");
  }
  Transcoder transcoder = new PDFTranscoder();
  transcoder.transcode(new TranscoderInput(reader), new TranscoderOutput(output));
}

public void handleOption() {
  index++;
  if (index >= arguments.length) {
    throw new IllegalArgumentException();
  }
  String s = arguments[index++];
  transcoder.addTranscodingHint(SVGTranscoder.KEY_SYSTEM_ID, s);
}