如何调整Apache POI中的图像包装样式



我必须创建一个带有文本后面图像的Word文档(DOCX)。我设法使用此代码添加了图像:

XWPFParagraph p = doc.createParagraph();
XWPFRun r = p.createRun();
String imgFile = "image.png";
XWPFPicture picture = r.addPicture(new FileInputStream(imgFile), XWPFDocument.PICTURE_TYPE_PNG, imgFile, Units.pixelToEMU(855), Units.pixelToEMU(776));

,但我可以找到如何将其发送在文本后面的任何地方(有点像背景图像或水印)。

试试Bellow完整代码..

import java.io.File;
import java.io.IOException;
import org.docx4j.XmlUtils;
import org.docx4j.jaxb.Context;
import org.docx4j.openpackaging.packages.WordprocessingMLPackage;
import org.docx4j.openpackaging.parts.PartName;
import org.docx4j.openpackaging.parts.WordprocessingML.HeaderPart;
import org.docx4j.openpackaging.parts.WordprocessingML.ImagePngPart;
import org.docx4j.openpackaging.parts.relationships.RelationshipsPart.AddPartBehaviour;
import org.docx4j.relationships.Relationship;
import org.docx4j.wml.Hdr;
import org.docx4j.wml.ObjectFactory;
import org.docx4j.wml.SectPr;

public class Watermark
{

    static String DOCX_OUT; 
    public static void main(String[] args) throws Exception
    {
        // The image to add
        imageFile = new File("d:\1\1.png" );  
        // Save it to
        DOCX_OUT = "d:\1\output.docx";
        WatermarkPicture sample = new WatermarkPicture();
        sample.addWaterMark();
    }
    static ObjectFactory factory = Context.getWmlObjectFactory();
    static File imageFile; 
    private byte[] image;    
    private WordprocessingMLPackage wordMLPackage;
    public void addWaterMark() throws Exception
    {
        image = this.getImage();
        wordMLPackage = WordprocessingMLPackage
                .createPackage();
        // A watermark is defined in the headers, which are in turn set in sectPr
        wordMLPackage.getMainDocumentPart().getContents().getBody().setSectPr(
                createSectPr() );
        File f = new File(DOCX_OUT);
        wordMLPackage.save(f);
    }
    private SectPr createSectPr() throws Exception {
        String openXML = "<w:sectPr xmlns:w="http://schemas.openxmlformats.org/wordprocessingml/2006/main" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships">"
                // Word adds the background image in each of 3 header parts
                + "<w:headerReference r:id="" + createHeaderPart("even").getId() + "" w:type="even"/>"
                + "<w:headerReference r:id="" + createHeaderPart("default").getId() + "" w:type="default"/>"
                + "<w:headerReference r:id="" + createHeaderPart("first").getId() + "" w:type="first"/>"
                // Word adds empty footer parts when you create a watermark, but its not necessary
//              + "<w:footerReference r:id="rId9" w:type="even"/>"
//              + "<w:footerReference r:id="rId10" w:type="default"/>"
//              + "<w:footerReference r:id="rId12" w:type="first"/>"
                + "<w:pgSz w:h="15840" w:w="12240"/>"
                + "<w:pgMar w:bottom="1440" w:footer="708" w:gutter="0" w:header="708" w:left="1440" w:right="1440" w:top="1440"/>"
                + "<w:cols w:space="708"/>"
                + "<w:docGrid w:linePitch="360"/>"
            +"</w:sectPr>";
        return (SectPr)XmlUtils.unmarshalString(openXML);
    }
    private Relationship createHeaderPart(String nameSuffix) throws Exception {
        HeaderPart headerPart = new HeaderPart(new PartName("/word/header-" + nameSuffix + ".xml"));
        Relationship rel =  wordMLPackage.getMainDocumentPart().addTargetPart(headerPart);
        setHdr( headerPart);
        return rel;
    }
    private void setHdr(HeaderPart headerPart) throws Exception  {
        ImagePngPart imagePart = new ImagePngPart(new PartName("/media/background.png"));
        imagePart.setBinaryData(image);
        Relationship rel = headerPart.addTargetPart(imagePart, AddPartBehaviour.REUSE_EXISTING); // the one image is shared by the 3 header parts
        String openXML = "<w:hdr mc:Ignorable="w14 wp14" xmlns:v="urn:schemas-microsoft-com:vml" xmlns:w="http://schemas.openxmlformats.org/wordprocessingml/2006/main" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships">"
                + "<w:p>"
                    + "<w:pPr>"
                        + "<w:pStyle w:val="Header"/>"
                    +"</w:pPr>"
                    + "<w:r>"
                        + "<w:rPr>"
                            + "<w:noProof/>"
                        +"</w:rPr>"
                        + "<w:pict>"
                            + "<v:shapetype coordsize="21600,21600" filled="f" id="_x0000_t75" o:preferrelative="t" o:spt="75" path="m@4@5l@4@11@9@11@9@5xe" stroked="f">"
                                + "<v:stroke joinstyle="miter"/>"
                                + "<v:formulas>"
                                    + "<v:f eqn="if lineDrawn pixelLineWidth 0"/>"
                                    + "<v:f eqn="sum @0 1 0"/>"
                                    + "<v:f eqn="sum 0 0 @1"/>"
                                    + "<v:f eqn="prod @2 1 2"/>"
                                    + "<v:f eqn="prod @3 21600 pixelWidth"/>"
                                    + "<v:f eqn="prod @3 21600 pixelHeight"/>"
                                    + "<v:f eqn="sum @0 0 1"/>"
                                    + "<v:f eqn="prod @6 1 2"/>"
                                    + "<v:f eqn="prod @7 21600 pixelWidth"/>"
                                    + "<v:f eqn="sum @8 21600 0"/>"
                                    + "<v:f eqn="prod @7 21600 pixelHeight"/>"
                                    + "<v:f eqn="sum @10 21600 0"/>"
                                +"</v:formulas>"
                                + "<v:path gradientshapeok="t" o:connecttype="rect" o:extrusionok="f"/>"
                                + "<o:lock aspectratio="t" v:ext="edit"/>"
                            +"</v:shapetype>"
                            + "<v:shape id="WordPictureWatermark835936646" o:allowincell="f" o:spid="_x0000_s2050" style="position:absolute;margin-left:0;margin-top:0;width:467.95pt;height:615.75pt;z-index:-251657216;mso-position-horizontal:center;mso-position-horizontal-relative:margin;mso-position-vertical:center;mso-position-vertical-relative:margin" type="#_x0000_t75">"
                                + "<v:imagedata blacklevel="22938f" gain="19661f" o:title="docx4j-logo" r:id="" + rel.getId() + ""/>"
                            +"</v:shape>"
                        +"</w:pict>"
                    +"</w:r>"
                +"</w:p>"
            +"</w:hdr>";
            Hdr hdr = (Hdr)XmlUtils.unmarshalString(openXML);
            headerPart.setJaxbElement(hdr);
        }
    private byte[] getImage() throws IOException {
        // Our utility method wants that as a byte array
        java.io.InputStream is = new java.io.FileInputStream(imageFile );
        long length = imageFile.length();    
        // You cannot create an array using a long type.
        // It needs to be an int type.
        if (length > Integer.MAX_VALUE) {
            System.out.println("File too large!!");
        }
        byte[] bytes = new byte[(int)length];
        int offset = 0;
        int numRead = 0;
        while (offset < bytes.length
               && (numRead=is.read(bytes, offset, bytes.length-offset)) >= 0) {
            offset += numRead;
        }
        // Ensure all the bytes have been read in
        if (offset < bytes.length) {
            System.out.println("Could not completely read file "+imageFile.getName());
        }
        is.close();
        return bytes;
    }

}

希望这对您有帮助!谢谢您的编码!

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