Quentin
3271fee5cc
服务：Spring Boot 3.2 + docx4j 8.3.9，POST /api/v3/server_office_file/file/parse
接受 .docx，返回 HTML（公式 → LaTeX，图片 → RustFS 外链）
公式支持三类来源：
- OMML（Word 2007+ 公式） → Python omml_mathml2latex
- MathType OLE 对象 → Ruby mathtype2mathml → MathML → LaTeX
- Word EQ 域（老教辅主力） → EqToLatexUtil（本次新增）
本次改动：
1. 新增 java-svc/.../core/EqToLatexUtil.java：
移植自 jby backend-services office-core，EQ 语法 → LaTeX
（\f→\dfrac、\r→\sqrt、\i→\int/\sum/\prod、\s→^{}/_{}、\b→\left\right、
\a→array、\x→\boxed/\overline、\o\al 堆叠、圈码、化学符号、极限、连等式）
品牌标记 JBYU* → WPU*，与采集端一致
2. CtoMathFinder：接上 EQ 分支（原为 not-ported 桩），域代码经
EqToLatexUtil.convert 转 LaTeX 写入 eqLatexMap（WPEQNUM 占位符）
3. WordParseUtil.dealPlaceholder：EQ 的 LaTeX 同样加 \( \) 包裹
（原先因 WPEQNUM 例外不加包裹，前端/MathJax 不渲染）
修前症状：教辅 Word 里分式/方程组/上下标整段丢失（如 {−1/3, 1} 变成 {－，1}）
修后实测：46 份教辅 2908 处 EQ 域全部还原，公式总数 2954 处、零未包裹残留
安全：application.yml（含 RustFS 密钥）不入库，提供 application.yml.example；
OssService 的 @Value 默认密钥已清空
435 lines
22 KiB
Java
435 lines
22 KiB
Java
/*
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* Decompiled with CFR 0.152.
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*
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* Could not load the following classes:
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* com.alibaba.excel.util.StringUtils
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* com.jby.common.util.UniqueUtil
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* javax.xml.bind.JAXBElement
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* org.apache.commons.collections4.CollectionUtils
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* org.docx4j.TraversalUtil$CallbackImpl
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* org.docx4j.dml.GraphicData
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* org.docx4j.dml.picture.Pic
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* org.docx4j.dml.wordprocessingDrawing.Anchor
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* org.docx4j.dml.wordprocessingDrawing.Inline
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* org.docx4j.openpackaging.packages.WordprocessingMLPackage
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* org.docx4j.openpackaging.parts.Part
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* org.docx4j.openpackaging.parts.WordprocessingML.BinaryPartAbstractImage
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* org.docx4j.openpackaging.parts.relationships.RelationshipsPart
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* org.docx4j.vml.CTImageData
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* org.docx4j.vml.CTShape
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* org.docx4j.vml.officedrawing.CTOLEObject
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* org.docx4j.wml.CTObject
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* org.docx4j.wml.Drawing
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* org.docx4j.wml.ObjectFactory
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* org.docx4j.wml.Pict
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* org.docx4j.wml.R
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* org.docx4j.wml.Text
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* org.slf4j.Logger
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* org.slf4j.LoggerFactory
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*/
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package com.jby.officecore.utils.finder;
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import com.alibaba.excel.util.StringUtils;
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import com.jby.common.util.UniqueUtil;
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import com.jby.officecore.domain.bo.ImageBO;
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import com.jby.officecore.domain.bo.ParseBO;
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import com.jby.officecore.enums.AttrEnum;
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import java.awt.AlphaComposite;
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import java.awt.Color;
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import java.awt.Graphics2D;
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import java.awt.Image;
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import java.awt.RenderingHints;
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import java.awt.image.BufferedImage;
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import java.awt.image.RenderedImage;
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import java.io.ByteArrayInputStream;
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import java.io.File;
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import java.util.Collection;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.Objects;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import javax.imageio.ImageIO;
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import javax.xml.bind.JAXBElement;
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import org.apache.commons.collections4.CollectionUtils;
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import org.docx4j.TraversalUtil;
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import org.docx4j.dml.GraphicData;
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import org.docx4j.dml.picture.Pic;
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import org.docx4j.dml.wordprocessingDrawing.Anchor;
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import org.docx4j.dml.wordprocessingDrawing.Inline;
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import org.docx4j.openpackaging.packages.WordprocessingMLPackage;
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import org.docx4j.openpackaging.parts.Part;
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import org.docx4j.openpackaging.parts.WordprocessingML.BinaryPartAbstractImage;
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import org.docx4j.openpackaging.parts.relationships.RelationshipsPart;
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import org.docx4j.vml.CTImageData;
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import org.docx4j.vml.CTShape;
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import org.docx4j.vml.officedrawing.CTOLEObject;
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import org.docx4j.wml.CTObject;
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import org.docx4j.wml.Drawing;
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import org.docx4j.wml.ObjectFactory;
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import org.docx4j.wml.Pict;
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import org.docx4j.wml.R;
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import org.docx4j.wml.Text;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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public class DrawingPictFinder
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extends TraversalUtil.CallbackImpl {
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private static final Logger log = LoggerFactory.getLogger(DrawingPictFinder.class);
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private final WordprocessingMLPackage wordMlPackage;
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private final ParseBO parseBO;
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private static final double CROP_SCALE = 1.52587890625;
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public DrawingPictFinder(WordprocessingMLPackage wordMlPackage, ParseBO parseBO) {
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this.wordMlPackage = wordMlPackage;
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this.parseBO = parseBO;
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}
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public List<Object> apply(Object o) {
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List contentList;
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List anyAndAny;
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R r;
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if (o instanceof Drawing && ((Drawing)o).getParent() instanceof R) {
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RelationshipsPart relationshipsPart = this.wordMlPackage.getMainDocumentPart().getRelationshipsPart();
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Drawing drawing = (Drawing)o;
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List anchorOrInline = drawing.getAnchorOrInline();
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if (CollectionUtils.isNotEmpty((Collection)anchorOrInline)) {
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Object anchorOrInlineObj = anchorOrInline.get(0);
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GraphicData graphicData = null;
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long cx = 0L;
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long cy = 0L;
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if (anchorOrInlineObj instanceof Inline) {
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Inline inline = (Inline)anchorOrInlineObj;
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graphicData = inline.getGraphic().getGraphicData();
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cx = inline.getExtent().getCx();
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cy = inline.getExtent().getCy();
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} else if (anchorOrInlineObj instanceof Anchor) {
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Anchor anchor = (Anchor)anchorOrInlineObj;
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graphicData = anchor.getGraphic().getGraphicData();
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cx = anchor.getExtent().getCx();
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cy = anchor.getExtent().getCy();
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}
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if (Objects.nonNull(graphicData) && "http://schemas.openxmlformats.org/drawingml/2006/picture".equals(graphicData.getUri())) {
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for (Object object : graphicData.getAny()) {
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String path;
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JAXBElement jaxbElement;
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if (!(object instanceof JAXBElement) || !((jaxbElement = (JAXBElement)object).getValue() instanceof Pic)) continue;
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Pic pic = (Pic)jaxbElement.getValue();
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String imageDataId = null;
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int cropLeft = 0;
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int cropTop = 0;
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int cropRight = 0;
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int cropBottom = 0;
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int rotation = 0;
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if (Objects.nonNull(pic.getBlipFill())) {
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if (Objects.nonNull(pic.getBlipFill().getBlip())) {
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imageDataId = pic.getBlipFill().getBlip().getEmbed();
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}
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if (Objects.nonNull(pic.getBlipFill().getSrcRect())) {
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cropLeft = pic.getBlipFill().getSrcRect().getL();
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cropTop = pic.getBlipFill().getSrcRect().getT();
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cropRight = pic.getBlipFill().getSrcRect().getR();
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cropBottom = pic.getBlipFill().getSrcRect().getB();
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}
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if (Objects.nonNull(pic.getSpPr()) && Objects.nonNull(pic.getSpPr().getXfrm())) {
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rotation = pic.getSpPr().getXfrm().getRot();
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}
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}
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Map<String, Object> map = this.dealCropRotate(imageDataId, cx, cropLeft, cropTop, cropRight, cropBottom, rotation);
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Object widthObj = map.get(AttrEnum.WIDTH.getAttr());
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Object heightObj = map.get(AttrEnum.HEIGHT.getAttr());
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Object pathObj = map.get("imagePath");
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double width = Objects.nonNull(widthObj) ? Double.parseDouble(widthObj.toString()) : (double)Math.round((double)cx / 9525.0);
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double height = Objects.nonNull(heightObj) ? Double.parseDouble(heightObj.toString()) : (double)Math.round((double)cy / 9525.0);
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Part part = relationshipsPart.getPart(imageDataId);
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if (Objects.nonNull(pathObj)) {
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path = String.valueOf(pathObj);
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} else if (Objects.nonNull(part)) {
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path = part.getPartName().getURI().getPath();
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} else {
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log.warn("\u65e0\u6cd5\u83b7\u53d6\u56fe\u7247Part\uff0cimageDataId={}", (Object)imageDataId);
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continue;
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}
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String imagePlaceholder = this.parseBO.getImagePlaceholder(imageDataId);
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ImageBO imageBO = new ImageBO().setWidth(width).setHeight(height).setPictureUrl(path);
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this.parseBO.getImageMap().put(imagePlaceholder, imageBO);
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R r2 = (R)drawing.getParent();
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List contentList2 = r2.getContent();
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int drawingIndex = contentList2.indexOf(drawing);
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if (drawingIndex != -1) {
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Text text = new ObjectFactory().createText();
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text.setValue(imagePlaceholder);
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contentList2.set(drawingIndex, text);
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continue;
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}
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log.warn("\u672a\u627e\u5230drawing\u5bf9\u8c61\u5728\u7236\u5143\u7d20\u4e2d\u7684\u7d22\u5f15\uff0c\u8df3\u8fc7\u66ff\u6362\u64cd\u4f5c");
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}
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}
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}
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}
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if (o instanceof Pict && ((Pict)o).getParent() instanceof R) {
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Pict pict = (Pict)o;
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r = (R)pict.getParent();
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anyAndAny = pict.getAnyAndAny();
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contentList = r.getContent();
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int pictIndex = contentList.indexOf(pict);
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if (pictIndex != -1) {
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this.dealCtShape(anyAndAny, r, pictIndex);
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}
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}
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if (o instanceof CTObject && ((CTObject)o).getParent() instanceof R) {
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CTObject ctObject = (CTObject)o;
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r = (R)ctObject.getParent();
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anyAndAny = ctObject.getAnyAndAny();
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contentList = r.getContent();
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int ctObjectIndex = contentList.indexOf(ctObject);
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if (ctObjectIndex != -1) {
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this.dealCtShape(anyAndAny, r, ctObjectIndex);
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}
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}
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return null;
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}
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private String extractValue(String style, String property) {
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if (style == null || property == null) {
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return null;
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}
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String regex = "\\b" + Pattern.quote(property) + "\\s*:\\s*([\\d.]+[a-zA-Z]*)";
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Pattern pattern = Pattern.compile(regex);
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Matcher matcher = pattern.matcher(style);
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if (matcher.find()) {
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return matcher.group(1);
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}
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return null;
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}
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private void dealCtShape(List<Object> anyAndAny, R r, int pictIndex) {
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String ctOleObjectRid = anyAndAny.stream().filter(f -> f instanceof JAXBElement && ((JAXBElement)f).getValue() instanceof CTOLEObject).map(f -> ((CTOLEObject)((JAXBElement)f).getValue()).getId()).filter(Objects::nonNull).findFirst().orElse(null);
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if (Objects.nonNull(ctOleObjectRid) && Objects.nonNull(this.parseBO.getMathTypeMap().get(this.parseBO.getMathTypePlaceholder(ctOleObjectRid)))) {
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Text text = new ObjectFactory().createText();
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text.setValue(this.parseBO.getMathTypePlaceholder(ctOleObjectRid));
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r.getContent().set(pictIndex, text);
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} else if (Objects.isNull(ctOleObjectRid) || Objects.isNull(this.parseBO.getMathTypeMap().get(this.parseBO.getMathTypePlaceholder(ctOleObjectRid)))) {
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if (Objects.nonNull(ctOleObjectRid)) {
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this.parseBO.getMathTypeMap().remove(this.parseBO.getMathTypePlaceholder(ctOleObjectRid));
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}
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for (Object object : anyAndAny) {
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String path;
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double heightPx;
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double widthPx;
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if (!(object instanceof JAXBElement) || !(((JAXBElement)object).getValue() instanceof CTShape)) continue;
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CTShape ctShape = (CTShape)((JAXBElement)object).getValue();
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String width = this.extractValue(ctShape.getStyle(), "width");
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String height = this.extractValue(ctShape.getStyle(), "height");
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CTImageData ctImageData = ctShape.getEGShapeElements().stream().filter(f -> f.getValue() instanceof CTImageData).map(m -> (CTImageData)m.getValue()).findFirst().orElse(null);
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if (!Objects.nonNull(ctImageData) || !StringUtils.isNotBlank((CharSequence)width) || !StringUtils.isNotBlank((CharSequence)height)) continue;
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String ctImageDataId = ctImageData.getId();
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long cx = 0L;
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try {
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double widthPtIn = Double.parseDouble(width.substring(0, width.length() - 2));
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if (width.endsWith("pt")) {
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cx = Math.round(widthPtIn * 12700.0);
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} else if (width.endsWith("in")) {
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cx = Math.round(widthPtIn * 914400.0);
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}
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}
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catch (NumberFormatException ignored) {
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log.error("extractWidth error");
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}
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int cropLeft = this.parseVmlCrop(ctImageData.getCropleft());
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int cropTop = this.parseVmlCrop(ctImageData.getCroptop());
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int cropRight = this.parseVmlCrop(ctImageData.getCropright());
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int cropBottom = this.parseVmlCrop(ctImageData.getCropbottom());
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String rotRaw = this.extractValue(ctShape.getStyle(), "rotation");
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int rotation = rotRaw == null ? 0 : (int)Math.round((double)Long.parseLong(rotRaw.replaceAll("[^\\d-]", "")) * 0.91552734375);
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Map<String, Object> map = this.dealCropRotate(ctImageDataId, cx, cropLeft, cropTop, cropRight, cropBottom, rotation);
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Object widthObj = map.get(AttrEnum.WIDTH.getAttr());
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Object heightObj = map.get(AttrEnum.HEIGHT.getAttr());
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Object pathObj = map.get("imagePath");
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if (Objects.nonNull(widthObj) && Objects.nonNull(heightObj)) {
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widthPx = (Double)map.get(AttrEnum.WIDTH.getAttr());
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heightPx = (Double)map.get(AttrEnum.HEIGHT.getAttr());
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} else {
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widthPx = Double.parseDouble(width.replaceAll("pt|in", ""));
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if (width.endsWith("pt")) {
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widthPx = Math.round(widthPx * 96.0 / 72.0);
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} else if (width.endsWith("in")) {
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widthPx = Math.round(widthPx * 96.0);
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}
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heightPx = Double.parseDouble(height.replaceAll("pt|in", ""));
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if (height.endsWith("pt")) {
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heightPx = heightPx * 96.0 / 72.0;
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} else if (height.endsWith("in")) {
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heightPx *= 96.0;
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}
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}
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RelationshipsPart relationshipsPart = this.wordMlPackage.getMainDocumentPart().getRelationshipsPart();
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Part part = relationshipsPart.getPart(ctImageDataId);
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if (Objects.nonNull(pathObj)) {
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path = String.valueOf(pathObj);
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} else if (Objects.nonNull(part)) {
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path = part.getPartName().getURI().getPath();
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} else {
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log.warn("\u65e0\u6cd5\u83b7\u53d6\u8001\u7248VML\u56fe\u7247Part\uff0cctImageDataId={}", (Object)ctImageDataId);
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continue;
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}
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ImageBO imageBO = new ImageBO().setWidth(widthPx).setHeight(heightPx).setPictureUrl(path);
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String imagePlaceholder = this.parseBO.getImagePlaceholder(ctImageDataId);
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this.parseBO.getImageMap().put(imagePlaceholder, imageBO);
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Text text = new ObjectFactory().createText();
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text.setValue(imagePlaceholder);
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r.getContent().set(pictIndex, text);
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break;
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}
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}
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}
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private Map<String, Object> dealCropRotate(String imageDataId, long cx, int cropLeft, int cropTop, int cropRight, int cropBottom, int rotation) {
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HashMap<String, Object> result = new HashMap<String, Object>();
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try {
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if (Objects.nonNull(imageDataId)) {
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boolean isRotate;
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boolean isCrop = cropLeft > 0 || cropTop > 0 || cropRight > 0 || cropBottom > 0;
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boolean bl = isRotate = rotation != 0;
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if (isCrop || isRotate) {
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RelationshipsPart relationshipsPart = this.wordMlPackage.getMainDocumentPart().getRelationshipsPart();
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Part part = relationshipsPart.getPart(imageDataId);
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BinaryPartAbstractImage imagePart = (BinaryPartAbstractImage)part;
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BufferedImage targetImage = ImageIO.read(new ByteArrayInputStream(imagePart.getBytes()));
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if (isCrop) {
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targetImage = this.cropImage(targetImage, cropLeft, cropTop, cropRight, cropBottom);
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}
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if (isRotate) {
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targetImage = this.rotateImage(targetImage, rotation, cx, result);
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}
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if (Objects.nonNull(targetImage)) {
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String formatName = this.getFormatName(imagePart);
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String path = "/word/media/" + UniqueUtil.getUuid() + "." + formatName;
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ImageIO.write((RenderedImage)targetImage, formatName, new File(this.parseBO.getTempDir() + "/temp" + path));
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result.put("imagePath", path);
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}
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}
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}
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}
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catch (Exception e) {
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log.error("\u5904\u7406\u56fe\u7247\u88c1\u526a\u4e0e\u65cb\u8f6c\u5f02\u5e38", (Throwable)e);
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}
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return result;
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}
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private String getFormatName(BinaryPartAbstractImage imagePart) {
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String contentType = imagePart.getContentType();
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String formatName = contentType.contains("png") ? "png" : (contentType.contains("jpeg") ? "jpeg" : (contentType.contains("gif") ? "gif" : (contentType.contains("bmp") ? "bmp" : "png")));
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return formatName;
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}
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public BufferedImage cropImage(BufferedImage originalImage, int srcRectL, int srcRectT, int srcRectR, int srcRectB) {
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double leftRatio = srcRectL < 0 ? 0.0 : (double)srcRectL / 100000.0;
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double topRatio = srcRectT < 0 ? 0.0 : (double)srcRectT / 100000.0;
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double rightRatio = srcRectR < 0 ? 0.0 : (double)srcRectR / 100000.0;
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double bottomRatio = srcRectB < 0 ? 0.0 : (double)srcRectB / 100000.0;
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int originalWidth = originalImage.getWidth();
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int originalHeight = originalImage.getHeight();
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int left = (int)Math.floor(leftRatio * (double)originalWidth);
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int top = (int)Math.floor(topRatio * (double)originalHeight);
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int right = (int)Math.floor(rightRatio * (double)originalWidth);
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int bottom = (int)Math.floor(bottomRatio * (double)originalHeight);
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int cropWidth = Math.max(1, originalWidth - left - right);
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int cropHeight = Math.max(1, originalHeight - top - bottom);
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if (left < 0 || top < 0 || left + cropWidth > originalWidth || top + cropHeight > originalHeight) {
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log.error("\u88c1\u526a\u533a\u57df\u65e0\u6548\u6216\u8d85\u51fa\u56fe\u7247\u8fb9\u754c");
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}
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return originalImage.getSubimage(left, top, cropWidth, cropHeight);
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}
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private BufferedImage rotateImage(BufferedImage originalImage, long rotation, long currentCx, Map<String, Object> result) {
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int origWidth = originalImage.getWidth();
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int origHeight = originalImage.getHeight();
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if (origWidth <= 0 || origHeight <= 0) {
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log.error("\u56fe\u7247\u533a\u57df\u65e0\u6548");
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}
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double emuPerPx = (double)currentCx / (double)origWidth;
|
|
if (currentCx == 0L) {
|
|
emuPerPx = 9525.0;
|
|
}
|
|
double degrees = (double)rotation / 60000.0;
|
|
double radians = Math.toRadians(degrees);
|
|
double sin = Math.abs(Math.sin(radians));
|
|
double cos = Math.abs(Math.cos(radians));
|
|
double TOLERANCE = 1.0E-10;
|
|
if (sin < 1.0E-10) {
|
|
sin = 0.0;
|
|
}
|
|
if (cos < 1.0E-10) {
|
|
cos = 0.0;
|
|
}
|
|
int newWidth = (int)Math.ceil((double)origWidth * cos + (double)origHeight * sin);
|
|
int newHeight = (int)Math.ceil((double)origWidth * sin + (double)origHeight * cos);
|
|
newWidth = Math.max(1, newWidth);
|
|
newHeight = Math.max(1, newHeight);
|
|
int superSampleFactor = 4;
|
|
int ssWidth = origWidth * superSampleFactor;
|
|
int ssHeight = origHeight * superSampleFactor;
|
|
int ssNewW = newWidth * superSampleFactor;
|
|
int ssNewH = newHeight * superSampleFactor;
|
|
int imgType1 = originalImage.getType() == 0 ? 2 : originalImage.getType();
|
|
BufferedImage highResOriginal = new BufferedImage(ssWidth, ssHeight, imgType1);
|
|
Graphics2D g2dHighRes = highResOriginal.createGraphics();
|
|
this.configureGraphics2D(g2dHighRes);
|
|
g2dHighRes.drawImage(originalImage, 0, 0, ssWidth, ssHeight, null);
|
|
g2dHighRes.dispose();
|
|
int imgType2 = highResOriginal.getType() == 0 ? 2 : highResOriginal.getType();
|
|
BufferedImage rotatedSuperSample = new BufferedImage(ssNewW, ssNewH, imgType2);
|
|
Graphics2D g2dRotated = rotatedSuperSample.createGraphics();
|
|
if (highResOriginal.getType() == 2) {
|
|
g2dRotated.setComposite(AlphaComposite.Clear);
|
|
g2dRotated.fillRect(0, 0, ssNewW, ssNewH);
|
|
g2dRotated.setComposite(AlphaComposite.SrcOver);
|
|
} else {
|
|
g2dRotated.setColor(Color.WHITE);
|
|
g2dRotated.fillRect(0, 0, ssNewW, ssNewH);
|
|
}
|
|
g2dRotated.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
|
|
g2dRotated.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
|
|
g2dRotated.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
|
|
g2dRotated.translate((double)ssNewW / 2.0, (double)ssNewH / 2.0);
|
|
g2dRotated.rotate(radians);
|
|
g2dRotated.drawImage((Image)highResOriginal, -ssWidth / 2, -ssHeight / 2, null);
|
|
g2dRotated.dispose();
|
|
BufferedImage rotatedImage = new BufferedImage(newWidth, newHeight, rotatedSuperSample.getType() == 0 ? 2 : rotatedSuperSample.getType());
|
|
Graphics2D g2dFinal = rotatedImage.createGraphics();
|
|
this.configureGraphics2D(g2dFinal);
|
|
g2dFinal.drawImage(rotatedSuperSample, 0, 0, newWidth, newHeight, null);
|
|
g2dFinal.dispose();
|
|
long newCx = Math.round((double)newWidth * emuPerPx);
|
|
long newCy = Math.round((double)newHeight * emuPerPx);
|
|
double newWidthPx = Math.round((double)newCx / 9525.0);
|
|
double newHeightPx = Math.round((double)newCy / 9525.0);
|
|
result.put(AttrEnum.WIDTH.getAttr(), newWidthPx);
|
|
result.put(AttrEnum.HEIGHT.getAttr(), newHeightPx);
|
|
return rotatedImage;
|
|
}
|
|
|
|
private void configureGraphics2D(Graphics2D g2d) {
|
|
g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
|
|
g2d.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
|
|
g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
|
|
}
|
|
|
|
private int parseVmlCrop(String vmlCrop) {
|
|
if (vmlCrop == null || StringUtils.isBlank((CharSequence)vmlCrop)) {
|
|
return 0;
|
|
}
|
|
String clean = vmlCrop.trim().replaceAll("[fF]$", "");
|
|
try {
|
|
int value = Integer.parseInt(clean);
|
|
return (int)Math.round((double)value * 1.52587890625);
|
|
}
|
|
catch (NumberFormatException e) {
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
|