Java使用poi-tl設(shè)置word圖片環(huán)繞方式為浮于在文字上方
poi-tl簡(jiǎn)介
poi-tl(poi template language)是Word模板引擎,基于Microsoft Word模板和數(shù)據(jù)生成新的文檔。
文檔地址:http://deepoove.com/poi-tl/1.7.x/
因?yàn)閜oi-tl暫時(shí)不支持設(shè)置圖片環(huán)繞方式,但是可以自定義圖片渲染插件
廢話少說(shuō),直接上代碼
首先自定義一個(gè)圖片渲染插件
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.util.UnitUtils; import com.deepoove.poi.xwpf.BodyContainer; import com.deepoove.poi.xwpf.BodyContainerFactory; import com.deepoove.poi.xwpf.WidthScalePattern; import com.deepoove.poi.xwpf.XWPFRunWrapper; 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.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; /** * 自定義圖片渲染 */ public class MyPictureRenderPolicy extends AbstractRenderPolicy<Object> { @Override protected boolean validate(Object data) { if (null == data) { return false; } else if (data instanceof PictureRenderData) { return null != ((PictureRenderData) data).getPictureSupplier(); } else { return true; } } @Override public void doRender(RenderContext<Object> context) throws Exception { MyPictureRenderPolicy.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)); } XWPFRunWrapper wrapper = new XWPFRunWrapper(run, false); wrapper.addPicture(stream, pictureType.type(), "Generated", Units.pixelToEMU(width), Units.pixelToEMU(height)); CTDrawing drawing = run.getCTR().getDrawingArray(0); CTGraphicalObject graphicalobject = drawing.getInlineArray(0).getGraphic(); //拿到新插入的圖片替換添加CTAnchor 設(shè)置浮動(dòng)屬性 刪除inline屬性 CTAnchor anchor = ExportUtil.getAnchorWithGraphic(graphicalobject, "Generated", Units.toEMU(width), Units.toEMU(height),//圖片大小 Units.toEMU(270), Units.toEMU(-70), false);//相對(duì)當(dāng)前段落位置 需要計(jì)算段落已有內(nèi)容的左偏移 drawing.setAnchorArray(new CTAnchor[]{anchor});//添加浮動(dòng)屬性 drawing.removeInline(0);//刪除行內(nèi)屬性 } 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; } }
浮于文字上方的核心代碼提取出來(lái)放到了工具類里面
public class ExportUtil { /** * @param ctGraphicalObject 圖片數(shù)據(jù) * @param deskFileName 圖片描述 * @param width 寬 * @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, 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:effectExtent 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; } }
在使用poi-tl導(dǎo)出word時(shí)
ConfigureBuilder builder = Configure.builder(); builder.addPlugin('%',new MyPictureRenderPolicy());//把插件注冊(cè)為新標(biāo)簽類型 XWPFTemplate template = XWPFTemplate.compile(templateIs,builder.build()).render(exportBO);
這樣就能把模板里所有前綴為%的圖片標(biāo)簽渲染為浮于文字上方
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