Java文字轉圖片超出內容自動換行

效果圖

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

/**
 * 作者qq1023732997
 */
public class PictureMerge {
    public static void textToImage(String str) {
        try {
            int width = 390;
            int height = 140;
            BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
            Font font = new Font("黑體", Font.PLAIN, 14);
            Graphics g = image.getGraphics();
            g.setColor(Color.white);
            g.fillRect(0, 0, width, height);
            g.setFont(font);
            Color c = new Color(106, 106, 106);
            g.setColor(c);
            int fontHeight = (int) font.getSize2D();

            // 得到當前的font metrics
            FontMetrics metrics = g.getFontMetrics();
            int StrPixelWidth = metrics.stringWidth(str); // 字符串長度（像素） str要打印的字符串
            int lineSize = (int) Math.ceil(StrPixelWidth * 1.0 / width);// 算出行數
            System.out.println(StrPixelWidth + "---:");
            if (width < StrPixelWidth) {// 頁面寬度（width）小於 字符串長度
                StringBuilder sb = new StringBuilder();// 存儲每一行的字符串
                int j = 0;
                int tempStart = 0;
                String tempStrs[] = new String[lineSize];// 存儲換行之後每一行的字符串
                for (int i1 = 0; i1 < str.length(); i1++) {
                    char ch = str.charAt(i1);
                    sb.append(ch);
                    Rectangle2D bounds2 = metrics.getStringBounds(sb.toString(), null);
                    int tempStrPi1exlWi1dth = (int) bounds2.getWidth();
                    if (tempStrPi1exlWi1dth > width) {
                        tempStrs[j++] = str.substring(tempStart, i1);
                        tempStart = i1;
                        sb.delete(0, sb.length());
                        sb.append(ch);
                    }
                    if (i1 == str.length() - 1) {// 最後一行
                        tempStrs[j] = str.substring(tempStart);
                    }
                }
                for (int i = 0; i < tempStrs.length; i++) {
                    g.drawString(tempStrs[i], 5, (fontHeight + 5) * (i + 1));
                }
            } else {
                g.drawString(str, 5, fontHeight);
            }

            File outputfile = new File("D:\\雲上\\686.png");
            ImageIO.write(image, "png", outputfile);
            g.dispose();

        } catch (IOException e) {
            e.printStackTrace();
        }
    }


    public static void main(String[] arg) {
        String str = "最近經常看到大家動不動就在“隨着身體的一陣顫抖”，畫面感極強此人多半是在尬舞吧！那麼到底“隨着身體的一陣顫抖”是什麼梗，“隨着身體的一陣顫抖”的出處在哪，一起來看看吧：......";
        textToImage(str);
    }

}