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package com.ruoyi.quartz.util;
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import com.google.common.io.Resources;
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import com.ruoyi.common.utils.DateUtils;
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import javax.imageio.ImageIO;
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import java.awt.*;
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import java.awt.image.BufferedImage;
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import java.awt.AlphaComposite;
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import java.io.File;
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import java.io.IOException;
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import java.util.*;
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import java.util.List;
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public class MultiTextImageGenerator {
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private static final String savePath = "uploadPath/aquaticPublicOpinion/img/";
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private static final String backgroundPath = "moban.png";
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public static void main(String[] args) throws IOException {
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// 1. 示例数据
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List<AbstractMap.SimpleEntry<String, String>> dataList = Arrays.asList(
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new AbstractMap.SimpleEntry<>("水质监测", "用于监测水体中溶氧、温度、pH 等参数，保障水产养殖环境。"),
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new AbstractMap.SimpleEntry<>("智能告警", "当监测数据异常时，可通过APP或短信方式自动告警提醒。"),
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new AbstractMap.SimpleEntry<>("移动便携", "设备小巧轻便，支持户外测量，数据实时同步上传。")
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);
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// 2. 配置加载
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generateImage(dataList,new StyleConfig());
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}
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public static String generateImage(List<AbstractMap.SimpleEntry<String, String>> dataList, StyleConfig style) throws IOException {
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// 3. 背景图
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BufferedImage image = ImageIO.read(new File(backgroundPath));
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int width = image.getWidth();
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int height = image.getHeight();
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BufferedImage newImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
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Graphics2D g = newImage.createGraphics();
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g.drawImage(image, 0, 0, null);
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// 抗锯齿
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g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
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g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
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int maxTextWidth = width - 2 * style.startX;
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int currY = style.startY;
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// 4. 绘制每组内容块
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for (int i = 0; i < dataList.size(); i++) {
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String title = (i + 1) + ". " + dataList.get(i).getKey();
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String content = dataList.get(i).getValue();
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g.setFont(style.titleFont);
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FontMetrics titleMetrics = g.getFontMetrics();
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int titleHeight = titleMetrics.getHeight();
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g.setFont(style.contentFont);
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FontMetrics contentMetrics = g.getFontMetrics();
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List<String> lines = splitTextIntoLines(content, contentMetrics, maxTextWidth);
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int lineHeight = contentMetrics.getHeight() + style.lineSpacing;
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int contentHeight = lines.size() * lineHeight;
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int totalTextHeight = titleHeight + 10 + contentHeight;
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int blockHeight = totalTextHeight + 2 * style.padding;
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int blockWidth = maxTextWidth + 2 * style.padding;
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int blockX = style.startX - style.padding;
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int blockY = currY;
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if (style.showBackgroundBlock)
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{
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g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, style.backgroundAlpha));
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g.setColor(style.backgroundColor);
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g.fillRoundRect(blockX, blockY, blockWidth, blockHeight, style.cornerRadius, style.cornerRadius);
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}
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g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 1.0f));
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g.setColor(style.textColor);
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int textStartY = blockY + style.padding + (blockHeight - 2 * style.padding - totalTextHeight) / 2;
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g.setFont(style.titleFont);
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int titleY = textStartY + titleHeight;
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g.drawString(title, style.startX, titleY);
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g.setFont(style.contentFont);
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int contentStartY = titleY + 10 + lineHeight;
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for (int j = 0; j < lines.size(); j++) {
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int y = contentStartY + j * lineHeight;
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g.drawString(lines.get(j), style.startX, y);
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}
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currY = blockY + blockHeight + style.blockSpacing;
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}
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// 5. 添加文字水印
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drawTextWatermark(g, width, height, style);
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// 6. 添加图片水印
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// drawImageWatermark(g, width, height, style);
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g.dispose();
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// 7. 保存输出
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String saveFile = savePath + DateUtils.getDate()+ "_output.png";
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ImageIO.write(newImage, "png", new File(saveFile));
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return saveFile;
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}
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// 文字自动换行
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private static List<String> splitTextIntoLines(String text, FontMetrics metrics, int maxWidth) {
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List<String> lines = new ArrayList<>();
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StringBuilder line = new StringBuilder();
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for (char c : text.toCharArray()) {
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line.append(c);
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if (metrics.stringWidth(line.toString()) > maxWidth) {
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line.deleteCharAt(line.length() - 1);
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lines.add(line.toString());
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line = new StringBuilder().append(c);
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}
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}
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if (!line.toString().isEmpty()) {
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lines.add(line.toString());
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}
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return lines;
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}
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// 文字水印
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private static void drawTextWatermark(Graphics2D g, int width, int height, StyleConfig style) {
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g.setFont(style.watermarkFont);
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g.setColor(style.watermarkColor);
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FontMetrics metrics = g.getFontMetrics();
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int textWidth = metrics.stringWidth(style.watermarkText);
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int x = width - textWidth - style.watermarkTextMarginX;
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int y = height - style.watermarkTextMarginY;
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g.drawString(style.watermarkText, x, y);
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}
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// 图片水印
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private static void drawImageWatermark(Graphics2D g, int width, int height, StyleConfig style) {
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try {
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String watermarkImagePath = style.watermarkImagePath;
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File file = new File(watermarkImagePath);
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if (!file.exists()) {
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System.out.println("⚠️ 水印图片未找到：" + watermarkImagePath);
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return;
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}
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Image logo = ImageIO.read(file).getScaledInstance(
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style.watermarkImageWidth,
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style.watermarkImageHeight,
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Image.SCALE_SMOOTH
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);
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int x = width - style.watermarkImageWidth - style.watermarkImageMarginX;
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int y = height - style.watermarkImageHeight - style.watermarkImageMarginY;
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g.drawImage(logo, x, y, null);
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} catch (IOException e) {
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System.err.println("❌ 加载图片水印失败：" + e.getMessage());
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}
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}
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}
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...
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...
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