效果图
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("黑体", 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();// 得到当前的font metricsFontMetrics metrics = g.getFontMetrics();int StrPixelWidth = metrics.stringWidth(str); // 字符串长度（像素） str要打印的字符串int lineSize = (int) Math.ceil(StrPixelWidth * 1.0 / width);// 算出行数System.out.println(StrPixelWidth + "---:");if (width < StrPixelWidth) {// 页面宽度（width）小于 字符串长度StringBuilder sb = new StringBuilder();// 存储每一行的字符串int j = 0;int tempStart = 0;String tempStrs[] = new String[lineSize];// 存储换行之后每一行的字符串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) {// 最后一行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:\\云上\\686.png");ImageIO.write(image, "png", outputfile);g.dispose();} catch (IOException e) {e.printStackTrace();}}public static void main(String[] arg) {String str = "最近经常看到大家动不动就在“随着身体的一阵颤抖”，画面感极强此人多半是在尬舞吧！那么到底“随着身体的一阵颤抖”是什么梗，“随着身体的一阵颤抖”的出处在哪，一起来看看吧：......";textToImage(str);}}
