init
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王鹏
194
src/main/java/com/ruoyi/common/utils/CoverGenerator.java
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194
src/main/java/com/ruoyi/common/utils/CoverGenerator.java
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package com.ruoyi.common.utils;
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import java.awt.*;
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import java.awt.image.BufferedImage;
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import java.io.File;
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import java.io.InputStream;
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import java.util.Random;
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import javax.imageio.ImageIO;
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public class CoverGenerator {
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private static final Color[][] COLOR_SCHEMES = {
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// 绿色系
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{new Color(0, 128, 0)}, // 绿色
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{new Color(46, 139, 87)}, // 海洋绿
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{new Color(60, 179, 113)}, // 中海洋绿
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{new Color(32, 178, 170)}, // 浅海洋绿
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{new Color(0, 106, 78)}, // 深森林绿
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{new Color(0, 139, 69)}, // 春绿
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{new Color(34, 139, 34)}, // 森林绿
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{new Color(50, 205, 50)}, // 酸橙绿
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{new Color(0, 128, 128)}, // 水鸭绿
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// 蓝色系
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{new Color(70, 130, 180)}, // 钢青色
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{new Color(95, 158, 160)}, // 暗青色
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{new Color(100, 149, 237)}, // 矢车菊蓝
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{new Color(25, 25, 112)}, // 午夜蓝
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{new Color(0, 0, 139)}, // 深蓝色
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{new Color(30, 144, 255)}, // 道奇蓝
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{new Color(65, 105, 225)}, // 皇家蓝
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{new Color(0, 191, 255)}, // 深天蓝
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// 紫色系
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{new Color(106, 90, 205)}, // 石板蓝
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{new Color(123, 104, 238)}, // 中紫色
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{new Color(72, 61, 139)}, // 暗紫色
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{new Color(138, 43, 226)}, // 紫罗兰
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{new Color(148, 0, 211)}, // 暗紫罗兰
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{new Color(153, 50, 204)}, // 深兰花紫
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// 青色系
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{new Color(0, 139, 139)}, // 深青色
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{new Color(0, 206, 209)}, // 深绿松石
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{new Color(72, 209, 204)}, // 中绿松石
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{new Color(64, 224, 208)}, // 绿松石
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// 灰色系
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{new Color(47, 79, 79)}, // 暗岩灰
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{new Color(105, 105, 105)}, // 暗灰
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{new Color(112, 128, 144)}, // 石板灰
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{new Color(119, 136, 153)}, // 浅石板灰
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// 褐色系
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{new Color(139, 69, 19)}, // 马鞍棕色
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{new Color(160, 82, 45)}, // 赭色
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{new Color(165, 42, 42)}, // 褐色
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{new Color(128, 0, 0)}, // 栗色
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// 其他优雅配色
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{new Color(85, 107, 47)}, // 暗橄榄绿
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{new Color(107, 142, 35)}, // 橄榄土褐色
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{new Color(143, 188, 143)}, // 暗海绿
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{new Color(176, 196, 222)}, // 浅钢蓝
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{new Color(176, 224, 230)} // 粉蓝色
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};
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private static Color getRandomColor() {
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Random random = new Random();
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return COLOR_SCHEMES[random.nextInt(COLOR_SCHEMES.length)][0];
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}
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private static void addSubtleShadow(Graphics2D g2d, String text, int x, int y, Font font, Color shadowColor) {
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int offset = 2;
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// 第一层阴影，较淡
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g2d.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.12f));
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g2d.setColor(shadowColor);
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g2d.drawString(text, x + offset, y + offset);
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// 第二层阴影，稍深
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g2d.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.2f));
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g2d.drawString(text, x + offset - 1, y + offset - 1);
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// 重置透明度
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g2d.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 1.0f));
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}
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// 添加字体加载逻辑
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private static Font loadFont(int size) {
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try {
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// 优先尝试加载项目内部的字体文件
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InputStream is = CoverGenerator.class.getResourceAsStream("/fonts/SimHei.ttf");
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if (is != null) {
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Font font = Font.createFont(Font.TRUETYPE_FONT, is);
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return font.deriveFont(Font.BOLD, size);
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}
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} catch (Exception e) {
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// 记录日志但继续执行
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System.out.println("Failed to load custom font: " + e.getMessage());
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}
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// fallback到系统字体
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return new Font("Dialog.plain", Font.BOLD, size);
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}
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public static BufferedImage createCover(String text1, String text2, String tagText, int titleSize) {
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int width = 1200;
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int height = 675;
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// 创建图片
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BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
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Graphics2D g2d = image.createGraphics();
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// 设置背景色
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Color bgColor = getRandomColor();
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g2d.setColor(bgColor);
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g2d.fillRect(0, 0, width, height);
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// 启用抗锯齿
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g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
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g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
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// 修改字体设置部分
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Font titleFont = loadFont(60);
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Font subtitleFont = loadFont(titleSize);
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Font tagFont = loadFont(35);
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// 计算文字位置
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FontMetrics titleMetrics = g2d.getFontMetrics(titleFont);
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int titleWidth = titleMetrics.stringWidth(text1);
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int titleX = (width - titleWidth) / 2;
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int titleY = height / 6 + titleMetrics.getAscent();
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FontMetrics subtitleMetrics = g2d.getFontMetrics(subtitleFont);
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int subtitleWidth = subtitleMetrics.stringWidth(text2);
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int subtitleX = (width - subtitleWidth) / 2;
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int subtitleY = height / 2 - 60 + subtitleMetrics.getAscent();
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// 绘制主标题
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g2d.setFont(titleFont);
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addSubtleShadow(g2d, text1, titleX, titleY, titleFont, Color.BLACK);
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g2d.setColor(Color.WHITE);
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g2d.drawString(text1, titleX, titleY);
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// 绘制副标题
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g2d.setFont(subtitleFont);
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addSubtleShadow(g2d, text2, subtitleX, subtitleY, subtitleFont, Color.BLACK);
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g2d.setColor(new Color(255, 223, 128));
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g2d.drawString(text2, subtitleX, subtitleY);
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// 绘制标签
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g2d.setFont(tagFont);
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FontMetrics tagMetrics = g2d.getFontMetrics(tagFont);
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int tagWidth = tagMetrics.stringWidth(tagText);
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int tagHeight = tagMetrics.getHeight();
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int tagX = (width - tagWidth) / 2;
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int tagY = height * 3 / 4 + tagMetrics.getAscent();
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// 绘制标签背景
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int paddingX = 30;
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int paddingY = 15;
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g2d.setColor(new Color(255, 223, 128));
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g2d.fillRoundRect(
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tagX - paddingX,
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tagY - tagMetrics.getAscent() - paddingY,
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tagWidth + paddingX * 2,
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tagHeight + paddingY * 2,
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20,
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20
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);
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// 绘制标签文字
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g2d.setColor(Color.BLACK);
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g2d.drawString(tagText, tagX, tagY);
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g2d.dispose();
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return image;
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}
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public static void main(String[] args) {
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try {
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String title = "SpringBoot + Vue2";
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String subtitle = "二手手机管理系统";
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String tagText = "源码 + 数据库 + 论文";
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int titleSize = 120;
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BufferedImage cover = createCover(title, subtitle, tagText, titleSize);
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ImageIO.write(cover, "PNG", new File("cover.png"));
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System.out.println("Cover image generated successfully!");
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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}
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