姓名倒转写入到图片

package com.tbc.app.tam.main;

import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGImageEncoder;

import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.BufferedOutputStream;
import java.io.FileOutputStream;

public class TextChangToImage {

    /**
     * 创建图片
     * @param image 图片对象
     * @param fileLocation  图片路径
     */
    void createImage(BufferedImage image ,String fileLocation) {
        try {
            FileOutputStream fos = new FileOutputStream(fileLocation);
            BufferedOutputStream bos = new BufferedOutputStream(fos);
            JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(bos);
            encoder.encode(image);
            bos.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * 将文本绘制到图片上
     * @param text      文本
     * @param imgurl   生成的图片路径
     */
    public void graphicsGeneration(String text, String imgurl) {

        int imageWidth = 600;// 图片的宽度
        int imageHeight = 250;// 图片的高度
        int textMaxWidth = 450;

        BufferedImage image = new BufferedImage(imageWidth, imageHeight,BufferedImage.TYPE_INT_RGB);
        Graphics graphics = image.getGraphics();
        graphics.setColor(Color.WHITE);
        graphics.fillRect(0, 0, imageWidth, imageHeight);
        graphics.setColor(Color.BLACK);
        graphics.setFont(new Font("微软雅黑", 0, 100));
        int stringWidth = graphics.getFontMetrics().stringWidth(text);
        if(800<stringWidth && stringWidth<=1000){         //限制了图片大小，根据文本字数限制更改文字大小
            graphics.setFont(new Font("微软雅黑", 0, 90));
        }else if(1000<stringWidth && stringWidth <=1800){
            graphics.setFont(new Font("微软雅黑", 0, 65));
        }else if(1800<stringWidth && stringWidth<=4000){
            graphics.setFont(new Font("微软雅黑", 0, 45));
        }else if(4000<stringWidth && stringWidth <=6000){
            graphics.setFont(new Font("微软雅黑", 0, 35));
        }
        int stringAscent = graphics.getFontMetrics().getAscent();
        int textHeight = 100;
        int j=0;
        if(stringWidth <= textMaxWidth){
            graphics.drawString(text, imageWidth/2-stringWidth/2, textHeight);
        }else{
            int textWidth = 0;
            StringBuffer strBuffer = new StringBuffer();
            int textCount = 1;
            for (int i = 0;i < text.length();i++) {
                String tempStr = String.valueOf(text.charAt(i));
                int tempWidth = graphics.getFontMetrics().stringWidth(tempStr);
                if((textWidth + tempWidth)>textMaxWidth){  //大于固定的文本宽度则换行
                    int textHeightTemp = graphics.getFontMetrics().stringWidth(strBuffer.toString());
                    graphics.drawString(strBuffer.toString(), imageWidth/2-textHeightTemp/2, textHeight);
                    textHeight+=stringAscent;
                    textWidth = tempWidth;
                    strBuffer.setLength(0);
                }else{
                    textWidth += tempWidth;
                }
                strBuffer.append(tempStr);
                if(i == text.length()-1){
                    String textTemp = strBuffer.toString();
                    int textHeightTemp = graphics.getFontMetrics().stringWidth(textTemp);
                    graphics.drawString(strBuffer.toString(), imageWidth/2-textHeightTemp/2, textHeight);
                }
            }
        }

        BufferedImage bimg = null;
        try {
            bimg = javax.imageio.ImageIO.read(new java.io.File(imgurl));
        } catch (Exception e) {
        }

        if (bimg != null)
            graphics.drawImage(bimg, 230, 0, null);
        graphics.dispose();
        image = rotateImage(image,180);    //对绘制的图片做旋转
        createImage(image,imgurl);

    }

    public static void main(String[] args) {
        TextChangToImage cg = new TextChangToImage();
        try {
            cg.graphicsGeneration("张三李四王五", "D://8.jpg");
           /* BufferedImage src = ImageIO.read(new File("d:/8.jpg"));
            BufferedImage des = rotateImage(src, 90);   //对已有的图片进行旋转
            Assert.assertNotNull(des);
            Assert.assertTrue(ImageIO.write(des, "jpg", new File("d:/dog2.jpg")));
            */
        } catch (Exception e) {
            e.printStackTrace();
        }


    }

    /**
     * 旋转图片（该方法对180、360以外的角度旋转会更改图片长宽）
     * @param bufferedimage  图片对象
     * @param degree    旋转角度
     * @return
     */
    public static BufferedImage rotateImage(final BufferedImage bufferedimage,
                                            final int degree) {
        int w = bufferedimage.getWidth();
        int h = bufferedimage.getHeight();
        int type = bufferedimage.getColorModel().getTransparency();
        BufferedImage img;
        Graphics2D graphics2d;
        (graphics2d = (img = new BufferedImage(w, h, type))
                .createGraphics()).setRenderingHint(
                RenderingHints.KEY_INTERPOLATION,
                RenderingHints.VALUE_INTERPOLATION_BILINEAR);
        graphics2d.rotate(Math.toRadians(degree), w / 2, h / 2);
        graphics2d.drawImage(bufferedimage, 0, 0, null);
        graphics2d.dispose();
        return img;
    }
}