暂提交

src/main/java/com/budwk/app/base/utils/OfficePlusUtil.java

@@ -1,10 +1,16 @@
 package com.budwk.app.base.utils;
 
 import cn.hutool.core.io.FileUtil;
+import com.aspose.cells.FontConfigs;
 import com.aspose.cells.PdfSaveOptions;
 import com.aspose.cells.Workbook;
+import com.aspose.slides.FontsLoader;
+import com.aspose.slides.LoadOptions;
 import com.aspose.slides.Presentation;
 import com.aspose.words.Document;
+import com.aspose.words.FontSettings;
+import com.aspose.words.FontSourceBase;
+import com.aspose.words.MemoryFontSource;
 import com.aspose.words.SaveFormat;
 import com.budwk.app.base.exception.BaseException;
 import lombok.extern.slf4j.Slf4j;
@@ -12,6 +18,8 @@ import lombok.extern.slf4j.Slf4j;
 import java.io.File;
 import java.io.FileOutputStream;
 import java.io.IOException;
+import java.io.InputStream;
+import java.util.Arrays;
 
 /**
  * 文档转换
@@ -19,6 +27,81 @@ import java.io.IOException;
 @Slf4j
 public class OfficePlusUtil {
 
+    private static final String DEFAULT_FONT_NAME = "Noto Sans SC";
+    private static final String DEFAULT_FONT_RESOURCE = "/fonts/NotoSansSC-VF.ttf";
+    private static final Object FONT_CONFIG_LOCK = new Object();
+    private static volatile boolean fontConfigured;
+
+    /**
+     * 注册系统内置字体，并将其作为 Office 文档缺失字体或缺失字形时的默认回退字体。
+     * 原文档字体在服务器可用时仍优先使用，只有找不到原字体时才使用内置字体。
+     */
+    private static void configureDefaultFont() {
+        if (fontConfigured) {
+            return;
+        }
+        synchronized (FONT_CONFIG_LOCK) {
+            if (fontConfigured) {
+                return;
+            }
+            byte[] fontData = loadDefaultFontData();
+            configureWordFont(fontData);
+            configureExcelFont(fontData);
+            FontsLoader.loadExternalFont(fontData);
+            fontConfigured = true;
+        }
+    }
+
+    /**
+     * 从 classpath 读取随应用打包的字体，避免依赖线上服务器安装字体。
+     *
+     * @return 默认字体的二进制数据
+     */
+    private static byte[] loadDefaultFontData() {
+        try (InputStream inputStream = OfficePlusUtil.class.getResourceAsStream(DEFAULT_FONT_RESOURCE)) {
+            if (inputStream == null) {
+                throw new BaseException("系统内置默认字体不存在");
+            }
+            return inputStream.readAllBytes();
+        } catch (IOException e) {
+            log.error("读取系统内置默认字体失败", e);
+            throw new BaseException("读取系统内置默认字体失败");
+        }
+    }
+
+    /**
+     * 为 Word 转换保留已有字体源并追加内置字体，同时配置缺失字体和缺失字形回退。
+     *
+     * @param fontData 默认字体的二进制数据
+     */
+    private static void configureWordFont(byte[] fontData) {
+        FontSettings fontSettings = FontSettings.getDefaultInstance();
+        FontSourceBase[] currentSources = fontSettings.getFontsSources();
+        FontSourceBase[] fontSources = Arrays.copyOf(currentSources, currentSources.length + 1);
+        fontSources[currentSources.length] = new MemoryFontSource(fontData);
+        fontSettings.setFontsSources(fontSources);
+        fontSettings.getSubstitutionSettings().getDefaultFontSubstitution().setDefaultFontName(DEFAULT_FONT_NAME);
+        try {
+            fontSettings.getFallbackSettings().loadNotoFallbackSettings();
+        } catch (Exception e) {
+            log.error("配置 Word 默认字体回退规则失败", e);
+            throw new BaseException("配置 Word 默认字体失败");
+        }
+    }
+
+    /**
+     * 为 Excel 转换追加内置字体，并将其设置为找不到原字体时的默认字体。
+     *
+     * @param fontData 默认字体的二进制数据
+     */
+    private static void configureExcelFont(byte[] fontData) {
+        com.aspose.cells.FontSourceBase[] currentSources = FontConfigs.getFontSources();
+        com.aspose.cells.FontSourceBase[] fontSources = Arrays.copyOf(currentSources, currentSources.length + 1);
+        fontSources[currentSources.length] = new com.aspose.cells.MemoryFontSource(fontData);
+        FontConfigs.setFontSources(fontSources);
+        FontConfigs.setDefaultFontName(DEFAULT_FONT_NAME);
+    }
+
     /**
      * 转换
      *
@@ -47,7 +130,11 @@ public class OfficePlusUtil {
     public static void presentationConvertPdf(String sourcePath, String targetPath) {
         Presentation presentation = null;
         try {
-            presentation = new Presentation(sourcePath);
+            configureDefaultFont();
+            LoadOptions loadOptions = new LoadOptions();
+            loadOptions.setDefaultRegularFont(DEFAULT_FONT_NAME);
+            loadOptions.setDefaultAsianFont(DEFAULT_FONT_NAME);
+            presentation = new Presentation(sourcePath, loadOptions);
             presentation.save(targetPath, com.aspose.slides.SaveFormat.Pdf);
         } catch (Exception e) {
             log.info("转换pdf报错", e);
@@ -68,10 +155,12 @@ public class OfficePlusUtil {
     public static void excelConvertPdf(String sourcePath, String targetPath) {
         FileOutputStream fileOS = null;
         try {
+            configureDefaultFont();
             Workbook wb = new Workbook(sourcePath);
             fileOS = new FileOutputStream(targetPath);
             PdfSaveOptions pdfSaveOptions = new PdfSaveOptions();
             pdfSaveOptions.setOnePagePerSheet(true);
+            pdfSaveOptions.setDefaultFont(DEFAULT_FONT_NAME);
 //            for (int i = 0; i < 3; i++) {
 //                wb.getWorksheets().get(i).getHorizontalPageBreaks().clear();
 //                wb.getWorksheets().get(i).getVerticalPageBreaks().clear();
@@ -105,6 +194,7 @@ public class OfficePlusUtil {
     public static void wordConvertPdf(String sourcePath, String targetPath) {
         FileOutputStream os = null;
         try {
+            configureDefaultFont();
             File file = new File(targetPath);
             os = new FileOutputStream(file);
             Document doc = new Document(sourcePath);

src/main/resources/fonts/LICENSE_NotoSansSC.txt

@@ -0,0 +1,92 @@
+This Font Software is licensed under the SIL Open Font License,
+Version 1.1.
+
+This license is copied below, and is also available with a FAQ at:
+http://scripts.sil.org/OFL
+
+-----------------------------------------------------------
+SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
+-----------------------------------------------------------
+
+PREAMBLE
+The goals of the Open Font License (OFL) are to stimulate worldwide
+development of collaborative font projects, to support the font
+creation efforts of academic and linguistic communities, and to
+provide a free and open framework in which fonts may be shared and
+improved in partnership with others.
+
+The OFL allows the licensed fonts to be used, studied, modified and
+redistributed freely as long as they are not sold by themselves. The
+fonts, including any derivative works, can be bundled, embedded,
+redistributed and/or sold with any software provided that any reserved
+names are not used by derivative works. The fonts and derivatives,
+however, cannot be released under any other type of license. The
+requirement for fonts to remain under this license does not apply to
+any document created using the fonts or their derivatives.
+
+DEFINITIONS
+"Font Software" refers to the set of files released by the Copyright
+Holder(s) under this license and clearly marked as such. This may
+include source files, build scripts and documentation.
+
+"Reserved Font Name" refers to any names specified as such after the
+copyright statement(s).
+
+"Original Version" refers to the collection of Font Software
+components as distributed by the Copyright Holder(s).
+
+"Modified Version" refers to any derivative made by adding to,
+deleting, or substituting -- in part or in whole -- any of the
+components of the Original Version, by changing formats or by porting
+the Font Software to a new environment.
+
+"Author" refers to any designer, engineer, programmer, technical
+writer or other person who contributed to the Font Software.
+
+PERMISSION & CONDITIONS
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of the Font Software, to use, study, copy, merge, embed,
+modify, redistribute, and sell modified and unmodified copies of the
+Font Software, subject to the following conditions:
+
+1) Neither the Font Software nor any of its individual components, in
+Original or Modified Versions, may be sold by itself.
+
+2) Original or Modified Versions of the Font Software may be bundled,
+redistributed and/or sold with any software, provided that each copy
+contains the above copyright notice and this license. These can be
+included either as stand-alone text files, human-readable headers or
+in the appropriate machine-readable metadata fields within text or
+binary files as long as those fields can be easily viewed by the user.
+
+3) No Modified Version of the Font Software may use the Reserved Font
+Name(s) unless explicit written permission is granted by the
+corresponding Copyright Holder. This restriction only applies to the
+primary font name as presented to the users.
+
+4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
+Software shall not be used to promote, endorse or advertise any
+Modified Version, except to acknowledge the contribution(s) of the
+Copyright Holder(s) and the Author(s) or with their explicit written
+permission.
+
+5) The Font Software, modified or unmodified, in part or in whole,
+must be distributed entirely under this license, and must not be
+distributed under any other license. The requirement for fonts to
+remain under this license does not apply to any document created using
+the Font Software.
+
+TERMINATION
+This license becomes null and void if any of the above conditions are
+not met.
+
+DISCLAIMER
+THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
+OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
+COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
+DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
+OTHER DEALINGS IN THE FONT SOFTWARE.