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水印是一种常用于各种文档的声明、防伪手段，一般可设置文字水印或者加载图片作为水印。以下内容将分享通过Java编程给Word文档添加水印效果的方法，即
 
文本水印
 
图片水印
 
使用工具：Free Spire.Doc for Java (免费版)
 
Jar导入
 
方法1：通过官网下载控件包。在程序下新建一个directory目录，并命名(本示例中命名为lib)；将控件包lib文件夹下的jar(如下图1)复制到程序中新建的目录下。
 
图1:
 

 
复制jar文件后，鼠标右键点击jar文件，选择”Add as Library”。完成导入(如下图2)。
 
图2:
 

 
引用完成后，可以查看包含在其中的类、方法、属性等。如图3：
 
图3：
 

 
方法2：通过maven导入。参考导入方法。
 
Java代码示例(供参考)
 
1.添加文本水印
 
import com.spire.doc.*;
 
import com.spire.doc.documents.WatermarkLayout;
 
import java.awt.*;
 
public class Main {
 
public static void main(String[] args) {
 
//加载测试文档
 
Document document = new Document();
 
document.loadFromFile("sample.docx");
 
//插入文本水印
 
InsertTextWatermark(document.getSections().get(0));
 
//保存文档
 
document.saveToFile("textwatermark.docx",FileFormat.Docx );
 
}
 
//自定义方法指定文本水印字样，并设置成水印
 
private static void InsertTextWatermark(Section section){
 
TextWatermark txtWatermark = new TextWatermark();
 
txtWatermark.setText("内部使用");
 
txtWatermark.setFontSize(40);
 
txtWatermark.setColor(Color.red);
 
txtWatermark.setLayout(WatermarkLayout.Diagonal);
 
section.getDocument().setWatermark(txtWatermark);
 
}
 
}
 
文本水印效果：
 

 
2. 添加图片水印
 
import com.spire.doc.*;
 
public class Main {
 
public static void main(String[] args) {
 
//加载测试文档
 
Document document = new Document();
 
document.loadFromFile("sample.docx");
 
//加载需要设置成水印的图片
 
PictureWatermark picture = new PictureWatermark();
 
picture.setPicture("wx.png");
 
picture.setScaling(5);
 
picture.isWashout(false);
 
//将图片设置成水印
 
document.setWatermark(picture);
 
//保存文档
 
document.saveToFile("imagewatermark.docx",FileFormat.Docx );
 
}
 
}
 
图片水印效果：
 

 
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一般可设置文字水印或者加载图片作为水印，一般可设置文字水印或者加载图片作为水印。以下内容将分享通过Java编程给Word文档添加水印效果的方法，即
 
文本水印
 
图片水印
 
使用工具：Free Spire.Doc for Java(免费版)
 
Jar导入：
 
方法1：通过官网下载jar(
 
https://www.e-iceblue.cn/Introduce/Free-Spire-Doc-JAVA.html)文件包。下载后，解压文件，并将lib文件夹下的Spire.Doc.jar文件导入java程序。参考如下导入效果：
 

 
Java代码示例(供参考)
 
1. 添加文本水印
 
import com.spire.doc.*;
 
import com.spire.doc.documents.WatermarkLayout;
 
import java.awt.*;
 
public class Main {
 
public static void main(String[] args) {
 
//加载测试文档
 
Document document = new Document();
 
document.loadFromFile("sample.docx");
 
//插入文本水印
 
InsertTextWatermark(document.getSections().get(0));
 
//保存文档
 
document.saveToFile("textwatermark.docx",FileFormat.Docx );
 
}
 
//自定义方法插入文本水印并格式水印效果
 
private static void InsertTextWatermark(Section section){
 
TextWatermark txtWatermark = new TextWatermark();
 
txtWatermark.setText("内部使用");
 
txtWatermark.setFontSize(40);
 
txtWatermark.setColor(Color.red);
 
txtWatermark.setLayout(WatermarkLayout.Diagonal);
 
section.getDocument().setWatermark(txtWatermark);
 
}
 
}
 
文本水印效果：
 

 
2. 添加图片水印
 
import com.spire.doc.*;
 
public class Main {
 
public static void main(String[] args) {
 
//加载测试文档
 
Document document = new Document();
 
document.loadFromFile("sample.docx");
 
//加载图片作为水印
 
PictureWatermark picture = new PictureWatermark();
 
picture.setPicture("wx.png");
 
picture.setScaling(5);
 
picture.isWashout(false);
 
document.setWatermark(picture);
 
//保存文档
 
document.saveToFile("imagewatermark.docx",FileFormat.Docx );
 
}
 
}
 
图片水印效果：
 

 
(本文完)