Java实现多张图片合并一张,这个还是挺常用到的。
public class ImageUtil {
public static boolean merge(String[] imgs, String type, String mergePic) {
int dstHeight = 0;
int dstWidth = 0;
// 获取需要拼接的图片长度
int len = imgs.length;
// 判断长度是否大于0
if (len < 1) {
return false;
}
File[] file = new File[len];
BufferedImage[] images = new BufferedImage[len];
int[][] ImageArrays = new int[len][];
for (int i = 0; i < len; i++) {
try {
file[i] = new File(imgs[i]);
images[i] = ImageIO.read(file[i]);
} catch (Exception e) {
e.printStackTrace();
return false;
}
int width = images[i].getWidth();
int height = images[i].getHeight();
// 从图片中读取RGB 像素
ImageArrays[i] = new int[width * height];
ImageArrays[i] = images[i].getRGB(0, 0, width, height, ImageArrays[i], 0, width);
// 计算合并的宽度和高度
dstWidth = dstWidth > width ? dstWidth : width;
dstHeight += height;
}
// 合成图片像素
System.out.println("宽度:" + dstWidth);
System.out.println("高度:" + dstHeight);
if (dstHeight < 1) {
System.out.println("dstHeight < 1");
return false;
}
// 生成新图片
try {
BufferedImage imageNew = new BufferedImage(dstWidth, dstHeight, BufferedImage.TYPE_INT_RGB);
int width_i = 0;
int height_i = 0;
for (int i = 0; i < images.length; i++) {
int width = images[i].getWidth();
int height = images[i].getHeight();
imageNew.setRGB(0, height_i, width, height, ImageArrays[i], 0, width);
height_i += height;
}
File outFile = new File(mergePic);
// 写图片,输出到硬盘
ImageIO.write(imageNew, type, outFile);
} catch (Exception e) {
e.printStackTrace();
return false;
}
return true;
}
public static void main(String[] args) throws Exception {
String saveFile = "E:\\tmp\\avatar2.png";
String images[] = {"E:\\tmp\\avatar.png", "E:\\tmp\\avatar.png"};
ImageUtil.merge(images, "png", saveFile);
}
}
效果如下:
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原文链接 : https://yunfan.blog.csdn.net/article/details/120971676
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