原来的，只支持汉字，不支持Unicode

package com.gangwantech.web.utils;import com.aspose.words.*;
import net.coobird.thumbnailator.Thumbnails;import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;/*** @Author: LiHuaZhi* @Date: 2021/7/13 14:21* @Description:**/
public class Doc2PdfUtil {/*** 加载授权配置文件** @return*/private static boolean getLicense() {boolean result = false;try (InputStream in = Thread.currentThread().getContextClassLoader().getResourceAsStream("license.xml")) {// License的包路径必须为com.aspose.words.LicenseLicense license = new License();license.setLicense(in);result = true;} catch (Exception e) {e.printStackTrace();}return result;}/*** doc转pdf** @return*/public static byte[] doc2Pdf(byte[] bytes) {System.out.println("pdf转换中...");long old = System.currentTimeMillis();try (ByteArrayOutputStream fos = new ByteArrayOutputStream()) {// 验证if (!getLicense()) {throw new RuntimeException("文件转换失败!");}// 加载字体//FontSettings settings = FontSettings.getDefaultInstance();//String[] fontFamilyNames = GraphicsEnvironment.getLocalGraphicsEnvironment().getAvailableFontFamilyNames();//settings.setFontsFolders(fontFamilyNames, true);//LoadOptions loadOptions = new LoadOptions();//loadOptions.setFontSettings(settings); 加载字体//FontSettings settings = FontSettings.getDefaultInstance();//settings.setFontsFolder("C:\\Windows\\Fonts", true);//LoadOptions loadOptions = new LoadOptions();//loadOptions.setFontSettings(settings);ByteArrayInputStream inputStream = new ByteArrayInputStream(bytes);//Document document = new Document(inputStream, loadOptions);Document document = new Document(inputStream);document.save(fos, SaveFormat.PDF);byte[] buffer = fos.toByteArray();long now = System.currentTimeMillis();System.out.println("pdf转换成功，共耗时：" + ((now - old) / 1000.0) + "秒");return buffer;} catch (Exception e) {e.printStackTrace();throw new RuntimeException("文件转换失败!");}}public static byte[] rotateUsingThumbnailatorPng(String urlAddress, double angle) throws IOException {URL url = new URL(urlAddress);BufferedImage originalImage = ImageIO.read(url);ByteArrayOutputStream baos = new ByteArrayOutputStream();// 直接使用Thumbnailator进行旋转操作，并写入到ByteArrayOutputStreamThumbnails.of(originalImage).scale(1.0).rotate(angle).outputFormat("PNG") // 根据需要可更改输出格式.toOutputStream(baos);// 使用ByteArrayInputStream读取处理后的字节数组并转换为BufferedImageByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());try {BufferedImage read = ImageIO.read(bais);ByteArrayOutputStream os = new ByteArrayOutputStream();ImageIO.write(read, "PNG", os); // 注意这里是写为PNG格式，根据实际情况可以调整为JPEG等其他格式return os.toByteArray();} finally {bais.close(); // 关闭ByteArrayInputStream}}
}

现在的支持汉字和Unicode

package com.gangwantech.web.utils;import com.aspose.words.*;
import net.coobird.thumbnailator.Thumbnails;import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;/*** @Author: LiHuaZhi* @Date: 2021/7/13 14:21* @Description:**/
public class Doc2PdfUtil {private static final String DEFAULT_FONT_FOLDER = "/usr/share/fonts/noto/"; // Linux环境下默认字体目录/*** 加载授权配置文件** @return*/private static boolean getLicense() {boolean result = false;try (InputStream in = Thread.currentThread().getContextClassLoader().getResourceAsStream("license.xml")) {// License的包路径必须为com.aspose.words.LicenseLicense license = new License();license.setLicense(in);result = true;} catch (Exception e) {e.printStackTrace();}return result;}/*** doc转pdf** @return*/public static byte[] doc2Pdf(byte[] bytes) {System.out.println("pdf转换中...");long old = System.currentTimeMillis();try (ByteArrayOutputStream fos = new ByteArrayOutputStream()) {// 验证if (!getLicense()) {throw new RuntimeException("文件转换失败!");}// 设置字体目录以确保支持Unicode字符FontSettings fontSettings = new FontSettings();fontSettings.setFontsFolder(DEFAULT_FONT_FOLDER, true);LoadOptions loadOptions = new LoadOptions();loadOptions.setFontSettings(fontSettings);ByteArrayInputStream inputStream = new ByteArrayInputStream(bytes);Document document = new Document(inputStream, loadOptions);document.save(fos, SaveFormat.PDF);byte[] buffer = fos.toByteArray();long now = System.currentTimeMillis();System.out.println("pdf转换成功，共耗时：" + ((now - old) / 1000.0) + "秒");return buffer;} catch (Exception e) {e.printStackTrace();throw new RuntimeException("文件转换失败!");}}public static byte[] rotateUsingThumbnailatorPng(String urlAddress, double angle) throws IOException {URL url = new URL(urlAddress);BufferedImage originalImage = ImageIO.read(url);ByteArrayOutputStream baos = new ByteArrayOutputStream();// 直接使用Thumbnailator进行旋转操作，并写入到ByteArrayOutputStreamThumbnails.of(originalImage).scale(1.0).rotate(angle).outputFormat("PNG") // 根据需要可更改输出格式.toOutputStream(baos);// 使用ByteArrayInputStream读取处理后的字节数组并转换为BufferedImageByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());try {BufferedImage read = ImageIO.read(bais);ByteArrayOutputStream os = new ByteArrayOutputStream();ImageIO.write(read, "PNG", os); // 注意这里是写为PNG格式，根据实际情况可以调整为JPEG等其他格式return os.toByteArray();} finally {bais.close(); // 关闭ByteArrayInputStream}}
}