java wmf格式图片转png

-下载所需jar包：http://pan.baidu.com/s/1eSExTsQ
-1.新建工具类

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);}@Deprecatedpublic 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svgWMFTranscoder 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 -> jpgImageTranscoder 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streamint 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();}
}

-2.StringToll中的replace（）方法

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();}

-3.调用WmfToPng 类

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

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