一、基础类

import java.awt.*;

public class ImageText {

    //文字内容或图片路径
    private String text;

    //------------------文字属性-------------------
    //字体颜色和透明度
    private Color color;
    //字体和大小
    private Font font;

    //------------------图片属性-------------------
    //图片宽
    private int width;
    //图片高
    private int height;

    //------------------坐标属性-------------------
    //所在图片的x坐标
    private int x;
    //所在图片的y坐标
    private int y;

    //set和get部分省略

    public ImageText() {
    }

    //用于添加图片
    public ImageText(String text, Color color, Font font, int x, int y) {
        this.text = text;
        this.color = color;
        this.font = font;
        this.x = x;
        this.y = y;
    }
    //用于添加文本
    public ImageText(String text, int width, int height, int x, int y) {
        this.text = text;
        this.width = width;
        this.height = height;
        this.x = x;
        this.y = y;
    }
}

二、工具

    /**
     *
     * @param srcImgPath 源图片路径
     * @param targetImgPath 保存图片路径
     * @param strList 文字集合
     * @param imgList 图片集合
     */
    public static void writeImage1(String srcImgPath, String targetImgPath, List<ImageText> strList, List<ImageText> imgList){
        try (FileOutputStream outImgStream = new FileOutputStream(targetImgPath)){
            //读取原底片信息
            File srcImgFile = new File(srcImgPath);//得到文件
            BufferedImage srcImg = ImageIO.read(srcImgFile);//文件转化为图片
            int srcImgWidth = srcImg.getWidth();//获取图片的宽
            int srcImgHeight = srcImg.getHeight();//获取图片的高

            //添加文字
            BufferedImage bufImg = new BufferedImage(srcImgWidth, srcImgHeight, BufferedImage.TYPE_INT_RGB);
            Graphics2D g2d = bufImg.createGraphics();
            g2d.drawImage(srcImg, 0, 0, srcImgWidth, srcImgHeight, null);
            for (ImageText strDTO : strList) {
                g2d.setColor(strDTO.getColor());                                  //根据图片的背景设置水印颜色
                g2d.setFont(strDTO.getFont());                                    //设置字体
                g2d.drawString(strDTO.getText(), strDTO.getX(), strDTO.getY());   //画出水印
            }
            //添加图片
            for (ImageText imgDTO : imgList) {
                BufferedImage img = ImageIO.read(new File(imgDTO.getText()));
                BufferedImage imgNew = new BufferedImage(imgDTO.getWidth(), imgDTO.getHeight(), BufferedImage.TYPE_INT_RGB);
                g2d.drawImage(img, imgDTO.getX(), imgDTO.getY(), imgNew.getWidth(), imgNew.getHeight(), null);
            }
            g2d.dispose();

            // 输出图片
            ImageIO.write(bufImg, "jpg", outImgStream);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

三、测试

public static void main(String[] args) {
        //=========================================自行发挥================================
        //自己真实的地址:(若是文件流，连同工具部分一同修改就好);
        String srcImgPath="C:\\Users\\levoe\\Desktop\\证件\\图片1.png";    //源图片地址
        String tarImgPath="C:\\Users\\levoe\\Desktop\\证件\\TEMP\\测试1.png";   //目标图片的地址
        //==============================================================================

        //获取数据集合
        List<ImageText> list = new ArrayList<>();
        list.add(new ImageText("测试文本内容",Color.BLACK,new Font("仿宋_GB2312", Font.PLAIN, 12), 6, 63));

        List<ImageText> imgList = new ArrayList<>();
        imgList.add(new ImageText("C:\\Users\\ZhiPengyu\\Desktop\\证件\\img1.jpg",35,44, 6, 16));

        //操作图片:
        writeImage1(srcImgPath, tarImgPath, list,imgList);
    }