如何通过apache poi将背景图像添加到docx文档？

Question

如何通过ApachePOI或其他java框架将背景图像添加到docx文档中。我想在这样的结果文档中有一些xml块，其中定义了背景

<w:document xmlns:wpc="http://schemas.microsoft.com/office/word/2010/wordprocessingCanvas" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships" xmlns:m="http://schemas.openxmlformats.org/officeDocument/2006/math" xmlns:v="urn:schemas-microsoft-com:vml" xmlns:wp14="http://schemas.microsoft.com/office/word/2010/wordprocessingDrawing" xmlns:wp="http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawing" xmlns:w10="urn:schemas-microsoft-com:office:word" xmlns:w="http://schemas.openxmlformats.org/wordprocessingml/2006/main" xmlns:w14="http://schemas.microsoft.com/office/word/2010/wordml" xmlns:w15="http://schemas.microsoft.com/office/word/2012/wordml" xmlns:wpg="http://schemas.microsoft.com/office/word/2010/wordprocessingGroup" xmlns:wpi="http://schemas.microsoft.com/office/word/2010/wordprocessingInk" xmlns:wne="http://schemas.microsoft.com/office/word/2006/wordml" xmlns:wps="http://schemas.microsoft.com/office/word/2010/wordprocessingShape" mc:Ignorable="w14 w15 wp14">
<w:background w:color="FFFFFF">
    <v:background id="_x0000_s1025" o:bwmode="white" o:targetscreensize="1024,768">
        <v:fill r:id="rId2" o:title="Alien 1" recolor="t" type="frame"/>
    </v:background>
</w:background>
<w:body>
      .....
</w:body></w:document>

Answer 1

使用docx4j的在线代码生成器：

方法一

import javax.xml.bind.JAXBElement;
import org.docx4j.vml.CTBackground;
import org.docx4j.vml.CTFill;
import org.docx4j.wml.CTBackground;


public class Foo { 
public CTBackground createBackground() {

org.docx4j.wml.ObjectFactory wmlObjectFactory = new org.docx4j.wml.ObjectFactory();

CTBackground background = wmlObjectFactory.createCTBackground(); 
    background.setColor( "FFFFFF"); 
org.docx4j.vml.ObjectFactory vmlObjectFactory = new org.docx4j.vml.ObjectFactory();
    // Create object for background (wrapped in JAXBElement) 
    CTBackground background2 = vmlObjectFactory.createCTBackground(); 
    JAXBElement<org.docx4j.vml.CTBackground> backgroundWrapped = vmlObjectFactory.createBackground(background2); 
    background.getAnyAndAny().add( backgroundWrapped); 
        background2.setTargetscreensize( "1024,768"); 
        background2.setVmlId( "_x0000_s1025"); 
        background2.setBwmode(org.docx4j.vml.officedrawing.STBWMode.WHITE);
        // Create object for fill
        CTFill fill = vmlObjectFactory.createCTFill(); 
        background2.setFill(fill); 
            fill.setTitle( "Alien 1"); 
            fill.setId( "rId5"); 
            fill.setType(org.docx4j.vml.STFillType.FRAME);
            fill.setRecolor(org.docx4j.vml.STTrueFalse.T);

return background;
}
}

方法2

    String openXML = "<w:background w:color=\"FFFFFF\" 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:r=\"http://schemas.openxmlformats.org/officeDocument/2006/relationships\">
                + "<v:background id=\"_x0000_s1025\" o:bwmode=\"white\" o:targetscreensize=\"1024,768\">
                      + "<v:fill o:title=\"Alien 1\" r:id=\"rId5\" recolor=\"t\" type=\"frame\"/>"

                +"</v:background>"

          +"</w:background>";
CTBackground background = (CTBackground)XmlUtils.unmarshalString(openXML);

Answer 2

假设您想在文档的根中添加一个背景元素，您需要执行以下操作：

XWPFDocument doc = new XWPFDocument(OPCPackage.open("test.docx"));
if (doc.getDocument().getBackground() == null) {
   doc.getDocument.addNewBackground();
};

CTBackground bkgnd = doc.getDocument().getBackground();
bkgnd.setColor("FFFFFF");

现在，要将新背景添加到背景列表中（位于不同的名称空间中），有点麻烦。我们会这样做：

String xml = 
  "<v:background id=\"_x0000_s1025\" o:bwmode=\"white\" o:targetscreensize=\"1024,768\">" +
  "<v:fill r:id=\"rId2\" o:title=\"Alien 1\" recolor=\"t\" type=\"frame\"/>" +
  "</v:background>";
bkgnd.set(XmlToken.Factory.parse(xml));

如果查看类似XWPFRun的内容，您将看到一个从不同名称空间添加xml的示例。这一切都在梦中。docx名称空间你可以用CT对象来完成这一切，但遗憾的是你的情况很复杂。。。

如果手动XML内容对您来说有点棘手，请尝试使用POI处理一个文件，其中包含Word添加的内容，并使用CTBackground对象。这可能会让您为内部v:backgroundxml计算出xmlbeans对象，这将提供一种更简单的方法。如果你让它工作，发送补丁给POI！