'commit'

src/main/java/UnitTest/WriteCharactorToPng.java

@@ -0,0 +1,29 @@
+package UnitTest;
+
+import javax.imageio.ImageIO;
+import java.awt.*;
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+public class WriteCharactorToPng {
+    public static void main(String[] args) throws IOException {
+        String pngPath = "D:\\dsWork\\QingLong\\src\\main\\java\\UnitTest\\Image\\Rectangle.png";
+        BufferedImage image = ImageIO.read(new File(pngPath));
+        Graphics2D g = image.createGraphics();
+        g.setColor(Color.BLACK);
+        g.setFont(new Font("黑体", Font.PLAIN, 28));
+
+        String text = "三角形";
+        FontMetrics fm = g.getFontMetrics();
+        int x = (image.getWidth() - fm.stringWidth(text)) / 2;
+        int y = (image.getHeight() - fm.getHeight()) / 2 + fm.getAscent();
+        g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
+        g.drawString(text, x, y);
+        g.dispose();
+
+        ImageIO.write(image, "PNG", new File("c:\\output.png"));
+    }
+}