java wmf格式图片转png

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.zip.GZIPOutputStream;

import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;

import net.arnx.wmf2svg.gdi.svg.SvgGdi;
import net.arnx.wmf2svg.gdi.wmf.WmfParser;

import org.apache.batik.transcoder.TranscoderException;
import org.apache.batik.transcoder.TranscoderInput;
import org.apache.batik.transcoder.TranscoderOutput;
import org.apache.batik.transcoder.image.ImageTranscoder;
import org.apache.batik.transcoder.image.JPEGTranscoder;
import org.apache.batik.transcoder.image.PNGTranscoder;
import org.apache.batik.transcoder.wmf.tosvg.WMFTranscoder;
import org.w3c.dom.Document;

public class WmfToPng {

public static void main(String[] args) {

String result = convert("d:\\80814378377.wmf");
System.out.println(result);

}

@Deprecated
public static String convert2(String path) throws TranscoderException,
IOException {
String wmfPath = path;
File wmf = new File(wmfPath);
FileInputStream wmfStream = new FileInputStream(wmf);
ByteArrayOutputStream imageOut = new ByteArrayOutputStream();
int noOfByteRead = 0;
while ((noOfByteRead = wmfStream.read()) != -1) {
imageOut.write(noOfByteRead);
}
imageOut.flush();
wmfStream.close();
// wmf 转换为svg
WMFTranscoder transcoder = new WMFTranscoder();
// TranscodingHints hints = new TranscodingHints();
// hints.put(WMFTranscoder.KEY_HEIGHT, 1000f);
// hints.put(WMFTranscoder.KEY_WIDTH, 1500f);
// transcoder.setTranscodingHints(hints);
TranscoderInput input = new TranscoderInput(new ByteArrayInputStream(
imageOut.toByteArray()));
ByteArrayOutputStream svg = new ByteArrayOutputStream();
TranscoderOutput output = new TranscoderOutput(svg);
transcoder.transcode(input, output);
String svgFile = StringTool.replace(wmfPath, "wmf", "svg");
FileOutputStream fileOut = new FileOutputStream(svgFile);
fileOut.write(svg.toByteArray());
fileOut.flush();
fileOut.close();
svg.close();
// svg -> jpg
ImageTranscoder it = new JPEGTranscoder();
it.addTranscodingHint(JPEGTranscoder.KEY_QUALITY, new Float(0.5f));
ByteArrayOutputStream jpg = new ByteArrayOutputStream();
it.transcode(new TranscoderInput(new ByteArrayInputStream(svg
.toByteArray())), new TranscoderOutput(jpg));
String jpgFile = StringTool.replace(wmfPath, "wmf", "jpg");
FileOutputStream jpgOut = new FileOutputStream(jpgFile);
jpgOut.write(jpg.toByteArray());
jpgOut.flush();
jpgOut.close();
jpg.close();
// Filor.deleteFile(svgFile);// 删除掉中间文件
return jpgFile;
}

public static String convert(String path) {
try {
String svgFile = StringTool.replace(path, "wmf", "svg");
wmfToSvg(path, svgFile);
String jpgFile = StringTool.replace(path, "wmf", "png");
svgToJpg(svgFile, jpgFile);
return jpgFile;
} catch (Exception e) {
e.printStackTrace();
}
return null;

}

/**
* 将svg转化为JPG
*
* @param src
* @param dest
*/
public static String  svgToJpg(String src, String dest) {
FileOutputStream jpgOut = null;
FileInputStream svgStream = null;
ByteArrayOutputStream svgOut = null;
ByteArrayInputStream svgInputStream = null;
ByteArrayOutputStream jpg = null;
try {
// 获取到svg文件
File svg = new File(src);
svgStream = new FileInputStream(svg);
svgOut = new ByteArrayOutputStream();
// 获取到svg的stream
int noOfByteRead = 0;
while ((noOfByteRead = svgStream.read()) != -1) {
svgOut.write(noOfByteRead);
}
JPEGTranscoder it = new JPEGTranscoder();
it.addTranscodingHint(JPEGTranscoder.KEY_QUALITY, new Float(0.9f));
it.addTranscodingHint(ImageTranscoder.KEY_WIDTH, new Float(100));
jpg = new ByteArrayOutputStream();
svgInputStream = new ByteArrayInputStream(svgOut.toByteArray());
it.transcode(new TranscoderInput(svgInputStream),
new TranscoderOutput(jpg));
jpgOut = new FileOutputStream(dest);
jpgOut.write(jpg.toByteArray());
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (svgInputStream != null) {
svgInputStream.close();
}
if (jpg != null) {
jpg.close();
}
if (svgStream != null) {
svgStream.close();
}
if (svgOut != null) {
svgOut.close();
}
if (jpgOut != null) {
jpgOut.flush();
jpgOut.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
return dest;
}

/**
* 将wmf转换为svg
*
* @param src
* @param dest
*/
public static void wmfToSvg(String src, String dest) {
boolean compatible = false;
try {
InputStream in = new FileInputStream(src);
WmfParser parser = new WmfParser();
final SvgGdi gdi = new SvgGdi(compatible);
parser.parse(in, gdi);

Document doc = gdi.getDocument();
OutputStream out = new FileOutputStream(dest);
if (dest.endsWith(".svgz")) {
out = new GZIPOutputStream(out);
}

output(doc, out);
} catch (Exception e) {
e.printStackTrace();
}
}

private static void output(Document doc, OutputStream out) throws Exception {
TransformerFactory factory = TransformerFactory.newInstance();
Transformer transformer = factory.newTransformer();
transformer.setOutputProperty(OutputKeys.METHOD, "xml");
transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
transformer.setOutputProperty(OutputKeys.INDENT, "yes");
transformer.setOutputProperty(OutputKeys.DOCTYPE_PUBLIC,
"-//W3C//DTD SVG 1.0//EN");
transformer.setOutputProperty(OutputKeys.DOCTYPE_SYSTEM,
"http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd");
transformer.transform(new DOMSource(doc), new StreamResult(out));
out.flush();
out.close();
}
}

public static String replace(String original ,String find,String replace)
{
if (original==null || find==null ||replace==null)
{
return original;
}
int findLen = find.length();
int originalLen = original.length();
if (originalLen==0 || findLen==0)
{
return original;
}
StringBuffer sb = new StringBuffer();
int begin = 0; //下次检索开始的位置
int i = original.indexOf(find); //找到的子串位置
while (i!=-1)
{
sb.append(original.substring(begin,i));
sb.append(replace);
begin = i + findLen;
i = original.indexOf(find,begin);
}
if (begin<originalLen)
{
sb.append(original.substring(begin));
}
return sb.toString();
}

//图片保存路径
String ready_url = WmfToPng.convert(src);