Java 在Word中添加多行水印效果（文本 图片水印）

概述

Word中设置水印效果时，不论是文本水印或者是图片水印都只能添加单个文字或者图片到Word页面，效果比较单一，本文通过Java代码示例介绍如何在页面中添加多行水印效果，即水印效果以多行文字排列或者以多个图片平铺到页面。

思路及方法：获取Word页眉，添加形状（在形状中添加文字）或者图片到页眉段落，并复制形状或图片。

程序环境：spire.doc.jar；jdk1.8.0; IDEA

程序代码

1. 添加多行文字水印效果

import com.spire.doc.*;
import com.spire.doc.documents.Paragraph;
import com.spire.doc.documents.ShapeLineStyle;
import com.spire.doc.documents.ShapeType;
import com.spire.doc.fields.ShapeObject;

import java.awt.*;

public class TextWatermark {
    public static void main(String[] args) {
        //加载示例文档
        Document doc = new Document();
        doc.loadFromFile("sample.docx");

        //添加艺术字并设置大小
        ShapeObject shape = new ShapeObject(doc, ShapeType.Text_Plain_Text);
        shape.setWidth(60);
        shape.setHeight(20);
        //设置艺术字文本内容、位置及样式(即文本水印字样）
        shape.setVerticalPosition(30);
        shape.setHorizontalPosition(20);
        shape.setRotation(315);
        shape.getWordArt().setText("内部使用");
        shape.setFillColor(Color.red);
        shape.setLineStyle(ShapeLineStyle.Single);
        shape.setStrokeColor(new Color(192, 192, 192, 255));
        shape.setStrokeWeight(1);

        Section section;
        HeaderFooter header;
        for (int n = 0; n < doc.getSections().getCount(); n++) {
            section = doc.getSections().get(n);
            //获取页眉
            header = section.getHeadersFooters().getHeader();
            Paragraph paragraph1;
            for (int i = 0; i < 4; i++) {
                //添加4个段落到页眉
                paragraph1 = header.addParagraph();
                for (int j = 0; j < 3; j++) {
                    //复制艺术字并设置多行多列位置
                    shape = (ShapeObject) shape.deepClone();
                    shape.setVerticalPosition(50 + 200 * i);
                    shape.setHorizontalPosition(20 + 160 * j);
                    paragraph1.getChildObjects().add(shape);
                }
            }
        }

        //保存文档
        doc.saveToFile("result.docx", FileFormat.Docx_2013);
        doc.dispose();
    }
}

2. 添加多行图片水印效果

import com.spire.doc.*;
import com.spire.doc.documents.Paragraph;
import com.spire.doc.documents.TextWrappingStyle;
import com.spire.doc.fields.DocPicture;

public class ImageWatermark {
    public static void main(String[] args) {
        //加载Word文档
        Document doc=new Document();
        doc.loadFromFile("input.docx");

        //加载图片
        DocPicture picture = new DocPicture(doc);
        picture.loadImage("logo.png");
        picture.setTextWrappingStyle(TextWrappingStyle.Behind);//设置图片环绕方式

        //遍历所有section
        for (int n = 0; n < doc.getSections().getCount(); n++) {
            Section section = doc.getSections().get(n);

            //获取section的页眉
            HeaderFooter header = section.getHeadersFooters().getHeader();

            Paragraph paragrapg1;
            //获取或添加段落
            if(header.getParagraphs().getCount()>0)
            {
                paragrapg1 = header.getParagraphs().get(0);
            }
            else
                {
                    paragrapg1 = header.addParagraph();
                }

            //复制图片，并添加图片到段落
            for (int p = 0; p < 4; p++) {
                for (int q = 0; q < 3; q++) {
                    picture = (DocPicture)picture.deepClone();
                    picture.setVerticalPosition(50 + 150 * p);
                    picture.setHorizontalPosition(10 + 140 * q);
                    paragrapg1.getChildObjects().add(picture);
                }
            }
        }

        //保存文档
        doc.saveToFile("output.docx", FileFormat.Docx_2013);
        doc.dispose();
    }
}