java AWT 给 Font 添加删除线和下划线(2D绘图)

最近在给客户做项目的时候客户提出要求要给图片加水印， 在添加文字水印时，让用户自定义自体，当用户在选择字体时，如果勾选了删除线和下划线选项，而java.awt.Font不支持下划线和删除线的style， 这怎么办呢？

还好，Java提供了 AttributedString 类， 通过

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

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

即可给文字添加删除线和下划线，再通过

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

就可以显示下划线和删除线的效果了。

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(); } }