/**
     * 10、自己做图片 ，根据文本宽度进行换行
     */
    @Test
    public void creatMyImage(){

        //整体图合成
        BufferedImage bufferedImage = new BufferedImage(500, 500, BufferedImage.TYPE_INT_RGB);
        //设置图片的背景色
        Graphics2D main = bufferedImage.createGraphics();
        main.fillRect(0, 0, 500, 500);

        String text = "111122223所以比传统纸巾更环保3334441比传统纸巾更环11111111111111122223所以比传统纸巾更环保3334441比传统纸巾更环11111111111111122223所以比传统纸巾更环保3334441比传统纸巾更环11111111111111122223所以比传统纸巾更环保3334441比传统纸巾更环11111111111";

        Graphics2D textG = bufferedImage.createGraphics() ;

        textG.setColor(new Color(37,37,37));
        Font hualaoContentFont = new Font("PingFang SC", Font.PLAIN, 20);
        textG.setFont(hualaoContentFont);
        textG.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_GASP);
        drawString(textG,text,30,100,4,10,50,true,false);

        //存储到本地
        String saveFilePath = "/Users/healerjean/Desktop/new.png";
        saveImageToLocalDir(bufferedImage, saveFilePath);

    }


    /**
     *
     * @param g
     * @param text 文本
     * @param lineHeight 行高（注意字体大小的控制哦）
     * @param maxWidth 行宽
     * @param maxLine 最大行数
     * @param left 左边距 //整段文字的左边距
     * @param top 上边距 //整顿文字的上边距
     * @param trim 是否修剪文本（1、去除首尾空格，2、将多个换行符替换为一个）
     * @param lineIndent 是否首行缩进
     */
    public static void drawString(Graphics2D g, String text, float lineHeight, float maxWidth, int maxLine, float left,
                                  float top, boolean trim, boolean lineIndent) {
        if (text == null || text.length() == 0) return;
        if(trim) {
            text = text.replaceAll("\\n+", "\n").trim();
        }
        if(lineIndent) {
            text = "　　" + text.replaceAll("\\n", "\n　　");
        }
        drawString(g, text, lineHeight, maxWidth, maxLine, left, top);
    }

    /**
     *
     * @param g
     * @param text 文本
     * @param lineHeight 行高
     * @param maxWidth 行宽
     * @param maxLine 最大行数
     * @param left 左边距
     * @param top 上边距
     */
    private static void drawString(Graphics2D g, String text, float lineHeight, float maxWidth, int maxLine, float left,
                                   float top) {
        if (text == null || text.length() == 0) return;

        FontMetrics fm = g.getFontMetrics();
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < text.length(); i++) {
            char c = text.charAt(i);
            sb.append(c);
            int stringWidth = fm.stringWidth(sb.toString());
            if (c == '\n' || stringWidth > maxWidth) {
                if(c == '\n') {
                    i += 1;
                }
                if (maxLine > 1) {
                    g.drawString(text.substring(0, i), left, top);
                    drawString(g, text.substring(i), lineHeight, maxWidth, maxLine - 1, left, top + lineHeight);
                } else {
                    g.drawString(text.substring(0, i - 1) + "…", left, top);
                }
                return;
            }
        }
        g.drawString(text, left, top);
    }