java，根据图片去生成图片，图片合成，签名图写入图片

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.URISyntaxException;
import java.net.URL;
import java.text.SimpleDateFormat;
import java.util.Date;

public class PasqsUtil {
    private static String 个人姓名 = "张三";
    private static String 身份证号码 = "123123123123";
    private static String 联系地址 = "123123123123";
    private static String 联系电话 = "123123123123";
    private static String 用户ID = "123123123123";
    private static String 签署日期 = "2024-04-05";

    public static void main(String[] args) throws URISyntaxException, IOException {
        String 文件输出地址="D:\\";

        URL 模板 = new URL("http://gips2.baidu.com/it/u=195724436,3554684702&fm=3028&app=3028&f=JPEG&fmt=auto?w=1280&h=960");
        URL 出险人签名 = new URL("https://www.baidu.com/img/PCtm_d9c8750bed0b3c7d089fa7d55720d6cf.png");
        generalImg(模板.openStream(), 文件输出地址, 个人姓名,  身份证号码,  联系地址, 联系电话, 小程序用户ID, 签署日期, 出险人签名);
    }

    public static String generalImg(InputStream 模板, String 文件输出地址,
                           String 个人姓名, String 身份证号码, String 联系地址, String 联系电话, String 用户ID, String 签署日期,
                           URL 出险人签名
    ) throws IOException {
        try {
            // 读取原始图片
            BufferedImage originalImage = ImageIO.read(模板);
            // 创建Graphics对象，用于在原始图片上绘制水印
            Graphics2D graphics = originalImage.createGraphics();
            graphics.setColor(Color.black); // 设置水印颜色
            graphics.setFont(new Font("宋体", Font.PLAIN, 24)); // 设置水印字体和大小

            graphics.drawString(个人姓名, 450, 425);
            graphics.drawString(身份证号码, 450, 445);
            graphics.drawString(联系地址, 450, 465);
            graphics.drawString(联系电话, 450, 485);
            graphics.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);

            BufferedImage 出险人签名Img = ImageIO.read(出险人签名);
            ColorUtil.transparentColor(出险人签名Img);
            graphics.drawImage(出险人签名Img, 450, 200, 320, 180,null);

            // 保存修改后的图片
            SimpleDateFormat sf = new SimpleDateFormat("yyyyMMdd_HH时mm分ss");
            String da = sf.format(new Date());
            String outFileName = da + ".png";
            File out = new File(文件输出地址 + outFileName);
            ImageIO.write(originalImage, "png", out);
            return outFileName;
        } catch (Exception e) {
            e.printStackTrace();
            throw e;
        }
    }
}

附：里面用到的一个类

import java.awt.*;
import java.awt.image.BufferedImage;
public class ColorUtil {
    public static boolean isTransparent(BufferedImage bufImg) {
        int height = bufImg.getHeight();
        int width = bufImg.getWidth();
        boolean isTransparent = false;
        for (int i = 0; i < width; i++) {
            for (int j = 0; j < height; j++) {
                int pixel = bufImg.getRGB(i, j);
                if (pixel >> 24 == 0) {
                    isTransparent = true;
                    break;
                }
            }
        }
        return isTransparent;
    }

    public static void transparentColor(BufferedImage bufferedImage) {
        //图片本身透明，则不在做背景透明处理
        if(bufferedImage==null||isTransparent(bufferedImage)){
            return;
        }

        Color transparentColor = new Color(bufferedImage.getRGB(0, 0));
        // 遍历图片的每个像素
        for (int x = 0; x < bufferedImage.getWidth(); x++) {
            for (int y = 0; y < bufferedImage.getHeight(); y++) {
                // 获取当前像素的颜色
                Color currentColor = new Color(bufferedImage.getRGB(x, y));
                // 如果当前像素的颜色与要设为透明的颜色足够接近
                if (currentColor.equals(transparentColor)) {
                    // 设置该像素为透明
                    bufferedImage.setRGB(x, y, new Color(0, 0, 0, 0).getRGB());
                }
            }
        }
    }
}

 

 服务器可能出现乱码：

那是因为服务器支持的字体，答题如下：

Dialog,DialogInput,Lucida Bright,Lucida Sans,Lucida Sans Typewriter,Monospaced,SansSerif,Serif,

不包含 宋体

得下载个支持宋体的字体ttf文件丢上去识别

 

Font font = null;
        try {
            font = Font.createFont(Font.TRUETYPE_FONT, new File("/opt/ziti_songti.ttf")).deriveFont(24f);
        } catch (FontFormatException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
        ge.registerFont(font);
        //...

        graphics.setFont(font); // 设置水印字体和大小,docker里不支持【宋体】这个编码

 

https://blog.csdn.net/weixin_66994393/article/details/135933388