最近在給客戶做項目的時候客戶提出要求要給圖片加水印， 在添加文字水印時，讓用戶自定義自體，當用戶在選擇字體時，如果勾選了刪除線和下劃線選項，而java.awt.Font不支持下劃線和刪除線的style， 這怎么辦呢？

還好，Java提供了 AttributedString 類， 通過

attributedString.addAttribute(TextAttribute.STRIKETHROUGH, TextAttribute.STRIKETHROUGH_ON);

attributedString.addAttribute(TextAttribute.UNDERLINE, TextAttribute.UNDERLINE_ON);

即可給文字添加刪除線和下劃線，再通過

graphics2D.drawString(as.getIterator(), x, y);

就可以顯示下劃線和刪除線的效果了。

import java.awt.Font; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.RenderingHints; import java.awt.font.TextAttribute; import java.text.AttributedString; import javax.swing.JFrame; import javax.swing.JPanel; public class IteratorUnderStrike extends JPanel{ public void paint(Graphics g) { Graphics2D g2 = (Graphics2D) g; String s = "/"www.java2s.com/" is great."; g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); Font plainFont = new Font("Times New Roman", Font.PLAIN, 24); AttributedString as = new AttributedString(s); as.addAttribute(TextAttribute.FONT, plainFont); as.addAttribute(TextAttribute.UNDERLINE, TextAttribute.UNDERLINE_ON, 1, 15); as.addAttribute(TextAttribute.STRIKETHROUGH, TextAttribute.STRIKETHROUGH_ON, 18, 25); g2.drawString(as.getIterator(), 24, 70); } public static void main(String[] args) { JFrame f = new JFrame(); f.getContentPane().add(new IteratorUnderStrike()); f.setSize(850, 250); f.show(); } }

java AWT 給 Font 添加刪除線和下劃線(2D繪圖)