PPT生成PNG---解决中文乱码和字体大小、位置偏移等问题

POI版本：3.15

代码如下：改编自poi源码中的工具类,源码中的出现乱码问题。网上搜的版本生成的图片字体大小和偏移有问题。

package POI;/* *  ==================================================================== *    Licensed to the Apache Software Foundation (ASF) under one or more *    contributor license agreements.  See the NOTICE file distributed with *    this work for additional information regarding copyright ownership. *    The ASF licenses this file to You under the Apache License, Version 2.0 *    (the "License"); you may not use this file except in compliance with *    the License.  You may obtain a copy of the License at * *        http://www.apache.org/licenses/LICENSE-2.0 * *    Unless required by applicable law or agreed to in writing, software *    distributed under the License is distributed on an "AS IS" BASIS, *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. *    See the License for the specific language governing permissions and *    limitations under the License. * ==================================================================== */import java.awt.Dimension;import java.awt.Graphics2D;import java.awt.RenderingHints;import java.awt.image.BufferedImage;import java.io.File;import java.io.FileInputStream;import java.util.List;import java.util.Locale;import java.util.Set;import java.util.TreeSet;import javax.imageio.ImageIO;import org.apache.poi.sl.draw.DrawFactory;import org.apache.poi.xslf.usermodel.XMLSlideShow;import org.apache.poi.xslf.usermodel.XSLFShape;import org.apache.poi.xslf.usermodel.XSLFSlide;import org.apache.poi.xslf.usermodel.XSLFTextParagraph;import org.apache.poi.xslf.usermodel.XSLFTextRun;import org.apache.poi.xslf.usermodel.XSLFTextShape;public class PPT2PNG1 {static void usage(String error) {String msg = "Usage: PPTX2PNG [options] <ppt or pptx file>\n"+ (error == null ? "" : ("Error: " + error + "\n")) + "Options:\n"+ "    -scale <float>   scale factor\n" + "    -slide <integer> 1-based index of a slide to render\n"+ "    -format <type>   png,gif,jpg (,null for testing)"+ "    -outdir <dir>    output directory, defaults to origin of the ppt/pptx file"+ "    -quiet           do not write to console (for normal processing)";System.out.println(msg);// no System.exit here, as we also run in junit tests!}public static void main(String[] args) throws Exception {if (args.length == 0) {usage(null);return;}String slidenumStr = "-1";float scale = 1;File file = null;String format = "png";File outdir = null;boolean quiet = false;for (int i = 0; i < args.length; i++) {if (args[i].startsWith("-")) {if ("-scale".equals(args[i])) {scale = Float.parseFloat(args[++i]);} else if ("-slide".equals(args[i])) {slidenumStr = args[++i];} else if ("-format".equals(args[i])) {format = args[++i];} else if ("-outdir".equals(args[i])) {System.err.println(args[++i]);outdir = new File(args[++i]);} else if ("-quiet".equals(args[i])) {quiet = true;}} else {file = new File(args[i]);}}if (format == null || !format.matches("^(png|gif|jpg|null)$")) {usage("Invalid format given");return;}if (outdir == null) {outdir = file.getParentFile();}if (!"null".equals(format) && (outdir == null || !outdir.exists() || !outdir.isDirectory())) {usage("Output directory doesn't exist");return;}if (scale < 0) {usage("Invalid scale given");return;}if (!quiet) {System.out.println("Processing " + file);}FileInputStream is =new FileInputStream(file);XMLSlideShow ppt = new XMLSlideShow(is);try {List<XSLFSlide> slides = ppt.getSlides();Set<Integer> slidenum = slideIndexes(slides.size(), slidenumStr);if (slidenum.isEmpty()) {usage("slidenum must be either -1 (for all) or within range: [1.." + slides.size() + "] for " + file);return;}Dimension pgsize = ppt.getPageSize();int width = (int) (pgsize.width * scale);int height = (int) (pgsize.height * scale);for (Integer slideNo : slidenum) {XSLFSlide slide = slides.get(slideNo);for (XSLFShape shape : ppt.getSlides().get(slideNo).getShapes()) {if (shape instanceof XSLFTextShape) {XSLFTextShape tsh = (XSLFTextShape) shape;for (XSLFTextParagraph p : tsh) {for (XSLFTextRun r : p) {r.setFontFamily("宋体");}}}}String title = slide.getTitle();if (!quiet) {System.out.println("Rendering slide " + slideNo + (title == null ? "" : ": " + title));}BufferedImage img = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);Graphics2D graphics = img.createGraphics();DrawFactory.getInstance(graphics).fixFonts(graphics);// default rendering optionsgraphics.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);graphics.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);graphics.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);graphics.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS,RenderingHints.VALUE_FRACTIONALMETRICS_ON);graphics.scale(scale, scale);// draw stuffslide.draw(graphics);// save the resultif (!"null".equals(format)) {String outname = file.getName().replaceFirst(".pptx?", "");outname = String.format(Locale.ROOT, "%1$s-%2$04d.%3$s", outname, slideNo, format);File outfile = new File(outdir, outname);ImageIO.write(img, format, outfile);}graphics.dispose();img.flush();}} finally {ppt.close();is.close();}if (!quiet) {System.out.println("Done");}}private static Set<Integer> slideIndexes(final int slideCount, String range) {Set<Integer> slideIdx = new TreeSet<Integer>();if ("-1".equals(range)) {for (int i = 0; i < slideCount; i++) {slideIdx.add(i);}} else {for (String subrange : range.split(",")) {String idx[] = subrange.split("-");switch (idx.length) {default:case 0:break;case 1: {int subidx = Integer.parseInt(idx[0]);if (subrange.contains("-")) {int startIdx = subrange.startsWith("-") ? 0 : subidx;int endIdx = subrange.endsWith("-") ? slideCount : Math.min(subidx, slideCount);for (int i = Math.max(startIdx, 1); i < endIdx; i++) {slideIdx.add(i - 1);}} else {slideIdx.add(Math.max(subidx, 1) - 1);}break;}case 2: {int startIdx = Math.min(Integer.parseInt(idx[0]), slideCount);int endIdx = Math.min(Integer.parseInt(idx[1]), slideCount);for (int i = Math.max(startIdx, 1); i < endIdx; i++) {slideIdx.add(i - 1);}break;}}}}return slideIdx;}}