目录
- 需求描述
- poi-tl 原生的插入图片
- 解决方式 自定义图片渲染插件
- 1. 自定义MyPictureRenderPolicy
- 2. 测试
- 参考
需求描述
word导出时插入图片,图片浮于文字上方而不是嵌入的方式
poi-tl 原生的插入图片
poi-tl渲染图片,使用的是org.apache.poi.xwpf.usermodel.XWPFRun的addPicture方法,该方法中有一段代码:CTInline inline = drawing.addNewInline();意思就是默认将图片转为inline类型,即行内元素
解决方式 自定义图片渲染插件
1. 自定义MyPictureRenderPolicy
import com.deepoove.poi.data.PictureRenderData; import com.deepoove.poi.data.PictureType; import com.deepoove.poi.data.Pictures; import com.deepoove.poi.data.style.PictureStyle; import com.deepoove.poi.exception.RenderException; import com.deepoove.poi.policy.AbstractRenderPolicy; import com.deepoove.poi.render.RenderContext; import com.deepoove.poi.util.BufferedImageUtils; import com.deepoove.poi.util.SVGConvertor; import com.deepoove.poi.utandroidil.UnitUtils; import com.deepoove.poi.xwpf.BodyContainer; import com.deepoove.poi.xwpf.BodyContainerFactory; import com.deepoove.poi.xwpf.WidthScalePattern; import org.apache.poi.util.Units; import org.apache.poi.xwpf.usermodel.IBodyElement; import org.apache.poi.xwpf.usermodel.ParagraphAlignment; import org.apache.poi.xwpf.usermodel.XWPFParagraph; import org.apache.poi.xwpf.usermodel.XWPFRun; import org.apache.XMLbeans.XmlException; import org.openxmlformats.schemas.drawingml.x2006.main.CTGraphicalObject; import org.openxmlformats.schemas.drawingml.x2006.wordprocessingDrawing.CTAnchor; import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTDrawing; import Java.awt.image.BufferedImage; import java.io.ByteArrayInputStream; import java.io.InputStream; import java.util.function.Supplier; /** * 自定义图片渲染 */ public class MyPictureRenderPolicy extejsnds AbstractRenderPolicy<Object> { @Override protected boolean validate(Object data) { if (null == data) { return false; } else if (data instanceof PictureRenderData) { return null != ((PictureRenderData) data).getPictureSupplier(); } else { js return true; } } @Override public void doRender(RenderContext<Object> context) throws Exception { Helper.renderPicture(context.getRun(), wrapper(context.getData())); } @Override protected void afterRender(RenderContext<Object> context) { this.clearPlaceholder(context, false); } @Override protected void reThrowException(RenderContext<Object> context, Exception e) { this.logger.info("Render picture " + context.getEleTemplate() + " error: {}", e.getMessage()); String alt = ""; if (context.getData() instanceof PictureRenderData) { alt = ((PictureRenderData) context.getData()).getAltMeta(); } context.getRun().setText(alt, 0); } private static PictureRenderData wrapper(Object object) { return object instanceof PictureRenderData ? (PictureRenderData) object : Pictures.of(object.toString()).fitSize().create(); } public static class Helper { public static void renderPicture(XWPFRun run, PictureRenderData picture) throws Exception { Supplier<byte[]> supplier = picture.getPictureSupplier(); byte[] imageBytes = (byte[]) supplier.get(); if (null == imageBytes) { throw new IllegalStateException("Can't read picture byte arrays!"); } else { PictureType pictureType = picture.getPictureType(); if (null == pictureType) { pictureType = PictureType.suggestFileType(imageBytes); } if (null == pictureType) { throw new RenderException("PictureRenderData must set picture type!"); } else { PictureStyle style = picture.getPictureStyle(); if (null == style) { style = new PictureStyle(); } int width = style.getWidth(); int height = style.getHeight(); if (pictureType == PictureType.SVG) { imageBytes = SVGConvertor.toPng(imageBytes, (float) width, (float) height); pictureType = PictureType.PNG; } if (!isSetSize(style)) { BufferedImage original = BufferedImageUtils.readBufferedImage(imageBytes); width = original.getWidth(); height = original.getHeight(); if (style.getScalePattern() == WidthScalePattern.FIT) { BodyContainer bodyContainer = BodyContainerFactory.getBodyContainer(((IBodyElement) run.getParent()).getBody()); int pageWidth = UnitUtils.twips2Pixel(bodyContainer.elementPageWidth((IBodyElement) run.getParent())); if (width > pageWidth) { double ratio = (double) pageWidth / (double) width; width = pageWidth; height = (int) ((double) height * ratio); } } } InputStream stream = new ByteArrayInputStream(imageBytes); Throwable var25 = null; try { PictureStyle.PictureAlign align = style.getAlign(); if (null != align && run.getParent() instanceof XWPFParagraph) { ((XWPFParagraph) run.getParent()).setAlignment(ParagraphAlignment.valueOf(align.ordinal() + 1)); } run.addPicture(stream, pictureType.type(), "Generated", Units.pixelToEMU(width), Units.pixelToEMU(height)); //XWPFRunWrapper wrapper = new XWPFRunWrapper(run, false); CTDrawing drawing = run.getCTR().getDrawingArray(0); CTGraphicalObject graphicalobject = drawing.getInlineArray(0).getGraphic(); //拿到新插入的图片替换添加CTAnchor 设置浮动属性 删除inline属性 CTAnchor anchor = getAnchorWithGraphic(graphicalobject, "Generated", Units.toEMU(width), Units.toEMU(height),//图片大小 Units.toEMU(270), Units.toEMU(-70), false);//相对当前段落位置 需要计算段落已有内容的左偏移 drawing.setAnchorArray(new CTAnchor[]{anchor});//添加浮动属性 drawing.removeInline(0);//删除行内属性 } catch (Throwable var20) { var25 = var20; throw var20; } finally { if (stream != null) { if (var25 != null) { try { stream.close(); } catch (Throwable var19) { var25.addSuppressed(var19); } } else { stream.close(); } } } } } } } private static boolean isSetSize(PictureStyle style) { return (style.getWidth() != 0 || style.getHeight() != 0) && style.getScalePattern() == WidthScalePattern.NONE; } /** * @param ctGraphicalObject 图片数据 * @param deskFileName 图片描述 * @param width 宽 * @param height 高 * @param leftOffset 水平偏移 left * @param topOffset 垂直偏移 top * @param behind 文字上方,文字下方 * @return * @throws Exception */ public static CTAnchor getAnchorWithGraphic(CTGraphicalObject ctGraphicalObject, cWuNgLzL String deskFileName, int width, int height, int leftOffset, int topOffset, boolean behind) { String anchorXML = "<wp:anchor xmlns:wp=\"http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawing\" " + "simplePos=\"0\" relativeHeight=\"0\" behindDoc=\"" + ((behind) ? 1 : 0) + "\" locked=\"0\" layoutInCell=\"1\" allowOverlap=\"1\">" + "<wp:simplePos x=\"0\" y=\"0\"/>" + "<wp:positionH relativeFrom=\"column\">" + "<wp:posOffset>" + leftOffset + "</wp:posOffset>" + "</wp:positionH>" + "<wp:positionV relativeFrom=\"paragraph\">" + "<wp:posOffset>" + topOffset + "</wp:posOffset>" + "</wp:positionV>" + "<wp:extent cx=\"" + width + "\" cy=\"" + height + "\"/>" + "<wp:ef编程fectExtent l=\"0\" t=\"0\" r=\"0\" b=\"0\"/>" + "<wp:wrapNone/>" + "<wp:docPr id=\"1\" name=\"Drawing 0\" descr=\"" + deskFileName + "\"/><wp:cNvGraphicFramePr/>" + "</wp:anchor>"; CTDrawing drawing = null; try { drawing = CTDrawing.Factory.parse(anchorXML); } catch (XmlException e) { e.printStackTrace(); } CTAnchor anchor = drawing.getAnchorArray(0); anchor.setGraphic(ctGraphicalObject); return anchor; } }
2. 测试
该内容将图片自动添加到word尾部
import cn.hutool.core.collection.CollectionUtil; import com.deepoove.poi.XWPFTemplate; import com.deepoove.poi.config.Configure; import com.deepoove.poi.config.ConfigureBuilder; import com.deepoove.poi.data.Pictures; import com.word.img.demo.picture.MyPictureRenderPolicy; import org.apache.poi.xwpf.usermodel.XWPFDocument; import org.apache.poi.xwpf.usermodel.XWPFParagraph; import org.apache.poi.xwpf.usermodel.XWPFRun; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.util.HashMap; import java.util.List; import java.util.Map; /** * 数据处理-word 文档尾部添加图片 * * @author: * @date: * @description: */ public class PoiWordTest3 { public static void main(String[] args) throws IOException { //要写入模板的数据 Map<String, Object> exampleData = new HashMap<>(); exampleData.put("image1", Pictures.ofLocal("src/main/resources/icecream.png").size(120, 120).create()); FileInputStream inputStream = new FileInputStream("src/main/resources/test3.docx"); XWPFDocument doc = new XWPFDocument(inputStream); List<XWPFParagraph> docParagraphs = doc.getParagraphs(); if (CollectionUtil.isNotEmpty(docParagraphs)) { //最后一个段落 XWPFParagraph paragraph = docParagraphs.get(docParagraphs.size() - 1); XWPFRun run = paragraph.createRun(); run.setText("{{%image1}} "); //poi-tl 所需模板 } else { //添加段落 XWPFParagraph paragraph = doc.createParagraph(); XWPFRun run = paragraph.createRun(); run.setText("{{%image1}} "); //poi-tl 所需模板 } //用于处理word文件,上传 File tempFileUpload = null; //上传临时文件 FileOutputStream tempFileOutputStreamUpload = null; //上传临时文件输出流 FileInputStream tempFileInputStreamUpload = null; //上传临时文件输入流 //临时文件输出流 tempFileUpload = File.createTempFile("wordTempUpload", ".docx"); tempFileOutputStreamUpload = new FileOutputStream(tempFileUpload); doc.write(tempFileOutputStreamUpload); tempFileInputStreamUpload = new FileInputStream(tempFileUpload); /********************* 把插件注册为新标签类型 ***********************************/ ConfigureBuilder builder = Configure.builder(); builder.addPlugin('%',new MyPictureRenderPolicy());//把插件注册为新标签类型 XWPFTemplate template = XWPFTemplate.compile(tempFileInputStreamUpload,builder.build()).render(exampleData); //文件输出流 FileOutputStream out = new FileOutputStream("src/main/resources/test31.docx"); template.write(out); out.flush(); out.close(); template.close(); } }
参考
Java使用poi-tl设置word图片环绕方式为浮于在文字上方
java poi设置生成的word的图片为上下型环绕以及其位置的实现
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