开始
package com.xjxcc.util;
import java.awt.AlphaComposite;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.RenderingHints;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.math.BigDecimal;
import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
public class ImageUtils {
/** 图片类型:png格式 */
public static final String IMG_TYPE_PNG = "png";
/** 图片类型:jpg格式 */
public static final String IMG_TYPE_JPG = "jpg";
/** 图片类型:gif格式 */
public static final String IMG_TYPE_GIF = "gif";
/** 拼接图片类型:横向X拼接 */
public static final int MERGE_IMG_TYPE_X = 1 ;
/** 拼接图片类型:横向Y拼接 */
public static final int MERGE_IMG_TYPE_Y = 2 ;
/**
* @Title: mergeImg
* @Description: { 拼接多张图片 }(这里用一句话描述这个方法的作用)
* @param imgsFiles 多张图片的file
* @param type 生成图片类型(png、jpg)
* @param dst_pic 目标图片路径
* @param type 拼接类型 1、横向X拼接 2、纵向Y拼接
* @throws
*/
public static boolean mergeImg(File[] imgsFiles, String imgType, int mergeType, String dstPic) {
int len = imgsFiles.length;
// 判断长度是否大于0
if (len < 1) {
return false;
}
BufferedImage[] images = new BufferedImage[len];
int[][] ImageArrays = new int[len][];
for (int i = 0; i < len; i++) {
try {
images[i] = ImageIO.read(imgsFiles[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);
}
int dst_height = 0, dst_width = 0, max_dst_width = 0;
if(mergeType == MERGE_IMG_TYPE_Y){
dst_width = images[0].getWidth();
}else if(mergeType == MERGE_IMG_TYPE_X){
dst_height = images[0].getHeight();
}
// 合成图片像素
for (int i = 0; i < images.length; i++) {
if(mergeType == MERGE_IMG_TYPE_Y){
dst_width = dst_width > images[i].getWidth() ? dst_width : images[i].getWidth();
dst_height += images[i].getHeight();
}else if(mergeType == MERGE_IMG_TYPE_X){
dst_height = dst_height > images[i].getHeight() ? dst_height : images[i].getHeight();
max_dst_width = max_dst_width > images[i].getWidth() ? max_dst_width : images[i].getWidth();
dst_width += images[i].getWidth();
}
}
// 合成后的图片
if (dst_height < 1 && dst_width < 1) {
return false;
}
// 生成新图片
try {
BufferedImage ImageNew = new BufferedImage(dst_width, dst_height, BufferedImage.TYPE_INT_RGB);
int height_i = 0, width_i = 0;
for (int i = 0; i < images.length; i++) {
if(mergeType == MERGE_IMG_TYPE_Y){
ImageNew.setRGB(0, height_i, dst_width, images[i].getHeight(), ImageArrays[i], 0, dst_width);
height_i += images[i].getHeight();
}else if(mergeType == MERGE_IMG_TYPE_X){
ImageNew.setRGB(width_i, 0, images[i].getWidth(), dst_height, ImageArrays[i], 0, max_dst_width);
width_i += images[i].getWidth();
}
}
File outFile = new File(dstPic);
ImageIO.write(ImageNew, imgType, outFile);// 写图片 ，输出到硬盘
} catch (Exception e) {
e.printStackTrace();
return false;
}
return true;
}
/**
*
* @Title: changeImgSize
* @Description: { 改变图片的大小 }(这里用一句话描述这个方法的作用)
* @param imgFile 图片
* @param newImgFile 新图片
* @param newImgWidth 新图片的宽度
* @param newImgHeight 新图片的高度
* @throws
*/
public static void changeImgSize (File imgFile , File newImgFile , Integer newImgWidth , Integer newImgHeight){
newImgWidth = (newImgWidth == null ? 400 : newImgWidth);
newImgHeight = (newImgHeight == null ? 400 : newImgHeight);
BufferedImage bimg;
try {
bimg = ImageIO.read(imgFile);
Image image = bimg.getScaledInstance(newImgWidth, newImgHeight, Image.SCALE_SMOOTH);
BufferedImage target = new BufferedImage(newImgWidth, newImgHeight,
BufferedImage.TYPE_INT_BGR);
Graphics g = target.getGraphics();
g.drawImage(image, BigDecimal.ZERO.intValue(), BigDecimal.ZERO.intValue(), null);
g.dispose();
ImageIO.write(target, "jpg", newImgFile);
} catch (IOException e) {
e.printStackTrace();
}
}
/**
*
* @Title: markImageByIcon
* @Description: { 给图片添加水印、可设置水印图片旋转角度 }(这里用一句话描述这个方法的作用)
* @param iconPath 水印图片路径
* @param srcImgPath 源图片路径
* @param targerPath 目标图片路径
* @param degree 水印图片旋转角度
* @throws
*/
public static void markImageByIcon(String iconPath, String srcImgPath,
String targerPath, Integer degree) {
OutputStream os = null;
try {
Image srcImg = ImageIO.read(new File(srcImgPath));
BufferedImage buffImg = new BufferedImage(srcImg.getWidth(null),srcImg.getHeight(null), BufferedImage.TYPE_INT_RGB);
// 得到画笔对象
Graphics2D g = buffImg.createGraphics();
// 设置对线段的锯齿状边缘处理
g.setRenderingHint(RenderingHints.KEY_INTERPOLATION,RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g.drawImage(srcImg.getScaledInstance(srcImg.getWidth(null), srcImg.getHeight(null), Image.SCALE_SMOOTH), 0, 0, null);
if (null != degree) {
// 设置水印旋转
g.rotate(Math.toRadians(degree),(double) buffImg.getWidth() / 2, (double) buffImg.getHeight() / 2);
}
// 水印图象的路径 水印一般为gif或者png的，这样可设置透明度
ImageIcon imgIcon = new ImageIcon(iconPath);
// 得到Image对象。
Image img = imgIcon.getImage();
float alpha = 0.7f; // 透明度
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP,alpha));
// 表示水印图片的位置
g.drawImage(img, (srcImg.getWidth(null) > img.getWidth(null)?srcImg.getWidth(null) - img.getWidth(null) : 0), (srcImg.getHeight(null) > img.getHeight(null)?srcImg.getHeight(null) - img.getHeight(null) : 0) , null);
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER));
g.dispose();
os = new FileOutputStream(targerPath);
// 生成图片
ImageIO.write(buffImg, "JPG", os);
System.out.println("图片完成添加Icon印章。。。。。。");
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (null != os)
os.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
结束
开始
package com.xjxcc.util;
import java.awt.AlphaC
阅读背景：
工具类：图片
来源：互联网
分享到：
