package com.zdcf.tool;
import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.Rectangle;
import java.awt.color.ColorSpace;
import java.awt.geom.AffineTransform;
import java.awt.image.AffineTransformOp;
import java.awt.image.BufferedImage;
import java.awt.image.ColorConvertOp;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.Date;
import java.util.Iterator;
import javax.imageio.ImageIO;
import javax.imageio.ImageReadParam;
import javax.imageio.ImageReader;
import javax.imageio.stream.ImageInputStream;
import javax.imageio.stream.ImageOutputStream;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
*
* @description：图片通用处理工具类
* @author 懂得
* @version 创建时间：2016年8月19日 上午11:17:00
*/
public class ImageUtils {
private static Logger logger = LoggerFactory.getLogger(ImageUtils.class);
/**
* 使用ImageReader获取图片尺寸
*
* @param src 源图片路径
*/
public void getImageSizeByImageReader(String src) {
long beginTime = new Date().getTime();
File file = new File(src);
try {
Iterator<ImageReader> readers = ImageIO.getImageReadersByFormatName("jpg");
ImageReader reader = (ImageReader) readers.next();
ImageInputStream iis = ImageIO.createImageInputStream(file);
reader.setInput(iis, true);
System.out.println("width:" + reader.getWidth(0));
System.out.println("height:" + reader.getHeight(0));
} catch (IOException e) {
logger.error("ImageUtils.getImageSizeByImageReader", e);
}
long endTime = new Date().getTime();
System.out.println("使用[ImageReader]获取图片尺寸耗时：[" + (endTime - beginTime)+"]ms");
}
/**
* 使用BufferedImage获取图片尺寸
*
* @param src 源图片路径
*/
public void getImageSizeByBufferedImage(String src) {
long beginTime = new Date().getTime();
File file = new File(src);
FileInputStream is = null;
try {
is = new FileInputStream(file);
} catch (FileNotFoundException e) {
logger.error("ImageUtils.getImageSizeByImageReader", e);
}
BufferedImage sourceImg = null;
try {
sourceImg = javax.imageio.ImageIO.read(is);
System.out.println("width:" + sourceImg.getWidth());
System.out.println("height:" + sourceImg.getHeight());
} catch (IOException e1) {
logger.error("ImageUtils.getImageSizeByImageReader", e1);
}
long endTime = new Date().getTime();
System.out.println("使用[BufferedImage]获取图片尺寸耗时：[" + (endTime - beginTime)+"]ms");
}
/**
* 获取图片的宽
* @param srcImageFile 源图片路径
* @return
*/
public static int getImageWidth(String srcImageFile){
try {
File file = new File(srcImageFile);
Iterator<ImageReader> readers = ImageIO.getImageReadersByFormatName("jpg");
ImageReader reader = (ImageReader) readers.next();
ImageInputStream iis = ImageIO.createImageInputStream(file);
reader.setInput(iis, true);
return reader.getWidth(0);
} catch (IOException e) {
e.printStackTrace();
return 0;
}
}
/***
* 获取图片的高
* @param srcImageFile 源图片路径
* @return
* @date 2016-3-30下午9:02:19
*/
public static int getImageHeight(String srcImageFile){
File file = new File(srcImageFile);
try {
Iterator<ImageReader> readers = ImageIO.getImageReadersByFormatName("jpg");
ImageReader reader = (ImageReader) readers.next();
ImageInputStream iis = ImageIO.createImageInputStream(file);
reader.setInput(iis, true);
return reader.getHeight(0);
} catch (IOException e) {
e.printStackTrace();
return 0;
}
}
/**
* 图片旋转指定角度
* @param src 文件流:源图像地址
* @param angel 旋转度
* @return
*/
public static BufferedImage Rotate(Image src, int angel) {
int src_width = src.getWidth(null); // 源图宽度
int src_height = src.getHeight(null); // 源图高度
angel=angel>0?angel:(360+angel);
Rectangle rect_des = CalcRotatedSize(new Rectangle(new Dimension(
src_width, src_height)), angel);
BufferedImage res = null;
res = new BufferedImage(rect_des.width, rect_des.height,
BufferedImage.TYPE_INT_RGB);
Graphics2D g2 = res.createGraphics();
g2.setPaint(Color.WHITE);
g2.fillRect(0, 0, rect_des.width, rect_des.height);
// transform
g2.translate((rect_des.width - src_width) / 2,
(rect_des.height - src_height) / 2);
g2.rotate(Math.toRadians(angel), src_width / 2, src_height / 2);
g2.drawImage(src, null, null);
return res;
}
public static Rectangle CalcRotatedSize(Rectangle src, int angel) {
// if angel is greater than 90 degree, we need to do some conversion
if (angel >= 90) {
if(angel / 90 % 2 == 1){
int temp = src.height;
src.height = src.width;
src.width = temp;
}
angel = angel % 90;
}
double r = Math.sqrt(src.height * src.height + src.width * src.width) / 2;
double len = 2 * Math.sin(Math.toRadians(angel) / 2) * r;
double angel_alpha = (Math.PI - Math.toRadians(angel)) / 2;
double angel_dalta_width = Math.atan((double) src.height / src.width);
double angel_dalta_height = Math.atan((double) src.width / src.height);
int len_dalta_width = (int) (len * Math.cos(Math.PI - angel_alpha
- angel_dalta_width));
int len_dalta_height = (int) (len * Math.cos(Math.PI - angel_alpha
- angel_dalta_height));
int des_width = src.width + len_dalta_width * 2;
int des_height = src.height + len_dalta_height * 2;
return new java.awt.Rectangle(new Dimension(des_width, des_height));
}
/***
* 剪裁图片
* @param srcImageFile
* @param dest
* @param x 起点横坐标
* @param y 纵坐标
* @param w 长
* @param h 高
* @throws IOException
* @date 2016-3-30下午12:19:10
*/
public static boolean cutImage(InputStream srcImageFile,File dest,int x,int y,int w,int h) {
try{
BufferedImage src = ImageIO.read(srcImageFile); // 读入文件
Iterator<ImageReader> iterator = ImageIO.getImageReadersByFormatName("jpg");
ImageReader reader = (ImageReader)iterator.next();
//获取图片流
ByteArrayOutputStream bs = new ByteArrayOutputStream();
ImageOutputStream ios = ImageIO.createImageOutputStream(bs);
ImageIO.write(src, "jpg", ios);
InputStream in=new ByteArrayInputStream(bs.toByteArray());
ImageInputStream iis = ImageIO.createImageInputStream(in);
reader.setInput(iis, true);
ImageReadParam param = reader.getDefaultReadParam();
x=(x>0?x:0);
y=(y>0?y:0);
Rectangle rect = new Rectangle(x, y, w,h);
param.setSourceRegion(rect);
BufferedImage bi = reader.read(0,param);
ImageIO.write(bi, "jpg", dest);
return true;
}catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* 剪裁图片(x,y,w,h,r)
* @param srcImageFile 文件流:源图像地址
* @param dest 新图像
* @param x 目标切片起点x坐标
* @param y 目标切片起点y坐标
* @param w 目标切片宽度
* @param h 目标切片高度
* @param r 目标切片旋转度
* @return
*/
public static boolean cutAndRotateImage(InputStream srcImageFile,File dest,int x,int y,int w,int h,int r){
try{
/*
* BufferedImage是Image的一个子类，BufferedImage生成的图片在内存里有一个图像缓冲区，
* 利用这个缓冲区我们可以很方便的操作这个图片，通常用来做图片修改操作如大小变换、图片变灰、设置图片透明或不透明等。
*/
BufferedImage src = ImageIO.read(srcImageFile); // 读入文件
//图片旋转指定角度
BufferedImage tag= Rotate(src, r);
//读取图片文件
Iterator<ImageReader> iterator = ImageIO.getImageReadersByFormatName("jpg");
ImageReader reader = (ImageReader)iterator.next();
//获取图片流
ByteArrayOutputStream bs = new ByteArrayOutputStream();
ImageOutputStream ios = ImageIO.createImageOutputStream(bs);
ImageIO.write(tag, "jpg", ios);
InputStream in=new ByteArrayInputStream(bs.toByteArray());
ImageInputStream iis=ImageIO.createImageInputStream(in);
reader.setInput(iis, true);
ImageReadParam param = reader.getDefaultReadParam();
x=(x>0?x:0);
y=(y>0?y:0);
//定义一个矩形
Rectangle rect = new Rectangle(x, y, w,h);
//提供一个 BufferedImage，将其用作解码像素数据的目标。
param.setSourceRegion(rect);
BufferedImage bi = reader.read(0,param);
//保存新图片
ImageIO.write(bi, "jpg", dest);
return true;
}catch (Exception e) {
return false;
}
}
/***
* 按照比例缩放
* @param srcImageFile
* @param result
* @param scale 缩放比例
* @param flag 缩放选择:true 放大; false 缩小;
* @return
* @date 2016-3-30下午2:39:44
*/
public static boolean scale(String srcImageFile, String result,int scale, boolean flag) {
try {
File file = new File(srcImageFile);
BufferedImage src = ImageIO.read(file); // 读入文件
Iterator<ImageReader> readers = ImageIO.getImageReadersByFormatName("jpg");
ImageReader reader = (ImageReader) readers.next();
ImageInputStream iis = ImageIO.createImageInputStream(file);
reader.setInput(iis, true);
int width = reader.getWidth(0); // 得到源图宽
int height = reader.getHeight(0); // 得到源图长
if (flag) {// 放大
width = width * scale;
height = height * scale;
} else {// 缩小
width = width / scale;
height = height / scale;
}
Image image = src.getScaledInstance(width, height,
Image.SCALE_DEFAULT);
BufferedImage tag = new BufferedImage(width, height,
BufferedImage.TYPE_INT_RGB);
Graphics g = tag.getGraphics();
g.drawImage(image, 0, 0, null); // 绘制缩小后的图
g.dispose();
ImageIO.write(tag, "jpg", new File(result));// 输出到文件流
return true;
} catch (IOException e) {
e.printStackTrace();
return false;
}
}
/***
* 缩放图像，按照长宽缩放
* @param srcImageFile
* @param result
* @param height 变换后的高度
* @param width 变换后的长度
* @param bb 比例不对称时，是否补白，true 补白;false 不补白
* @return
* @date 2016-3-30下午2:44:37
*/
public static boolean scale2(String srcImageFile, String result, int height, int width, boolean bb) {
try {
double ratio = 0.0; // 缩放比例
File file = new File(srcImageFile);
BufferedImage bi = ImageIO.read(file); // 读入文件
Iterator<ImageReader> readers = ImageIO.getImageReadersByFormatName("jpg");
ImageReader reader = (ImageReader) readers.next();
ImageInputStream iis = ImageIO.createImageInputStream(file);
reader.setInput(iis, true);
int width1 = reader.getWidth(0); // 得到源图宽
int height1 = reader.getHeight(0); // 得到源图长
@SuppressWarnings("static-access")
Image itemp = bi.getScaledInstance(width, height, bi.SCALE_SMOOTH);
// 计算比例
if ((height1 > height) || (width1 > width)) {
if (height1 > width1) {
ratio = (new Integer(height)).doubleValue()
/ height1;
} else {
ratio = (new Integer(width)).doubleValue() / width1;
}
AffineTransformOp op = new AffineTransformOp(AffineTransform
.getScaleInstance(ratio, ratio), null);
itemp = op.filter(bi, null);
}
if (bb) {//补白
BufferedImage image = new BufferedImage(width, height,
BufferedImage.TYPE_INT_RGB);
Graphics2D g = image.createGraphics();
g.setColor(Color.white);
g.fillRect(0, 0, width, height);
if (width == itemp.getWidth(null))
g.drawImage(itemp, 0, (height - itemp.getHeight(null)) / 2,
itemp.getWidth(null), itemp.getHeight(null),
Color.white, null);
else
g.drawImage(itemp, (width - itemp.getWidth(null)) / 2, 0,
itemp.getWidth(null), itemp.getHeight(null),
Color.white, null);
g.dispose();
itemp = image;
}
ImageIO.write((BufferedImage) itemp, "JPEG", new File(result));
return true;
} catch (IOException e) {
e.printStackTrace();
return false;
}
}
/***
* 转换图像格式
* @param srcImageFile 原图像地址
* @param formatName 转换类型
* @param destImageFile 转换后的地址
* @return
* @author roychenyi
* @date 2016-3-30下午2:49:15
*/
public static boolean convert(String srcImageFile, String formatName, String destImageFile) {
try {
File f = new File(srcImageFile);
f.canRead();
f.canWrite();
BufferedImage src = ImageIO.read(f);
ImageIO.write(src, formatName, new File(destImageFile));
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* 彩色转为黑白
* @param srcImageFile 源图像地址
* @param destImageFile 目标图像地址
*/
public final static void gray(String srcImageFile, String destImageFile) {
try {
BufferedImage src = ImageIO.read(new File(srcImageFile));
ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_GRAY);
ColorConvertOp op = new ColorConvertOp(cs, null);
src = op.filter(src, null);
ImageIO.write(src, "jpg", new File(destImageFile));
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* 给图片添加图片水印
* @param pressImg 水印图片
* @param srcImageFile 源图像地址
* @param destImageFile 目标图像地址
* @param x 修正值。 默认在中间
* @param y 修正值。 默认在中间
* @param alpha 透明度：alpha 必须是范围 [0.0, 1.0] 之内（包含边界值）的一个浮点数字
*/
public static boolean pressImage(String pressImg, String srcImageFile,String destImageFile,
int x, int y, float alpha) {
try {
File file = new File(srcImageFile);
BufferedImage src = ImageIO.read(file); // 读入文件
Iterator<ImageReader> readers = ImageIO.getImageReadersByFormatName("jpg");
ImageReader reader = (ImageReader) readers.next();
ImageInputStream iis = ImageIO.createImageInputStream(file);
reader.setInput(iis, true);
int width = reader.getWidth(0); // 得到源图宽
int height = reader.getHeight(0); // 得到源图长
BufferedImage image = new BufferedImage(width, height,
BufferedImage.TYPE_INT_RGB);
Graphics2D g = image.createGraphics();
g.drawImage(src, 0, 0, width, height, null);
// 水印文件
Image src_biao = ImageIO.read(new File(pressImg));
int wideth_biao = src_biao.getWidth(null);
int height_biao = src_biao.getHeight(null);
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP,
alpha));
g.drawImage(src_biao, (width-wideth_biao-x) ,
(height-height_biao-y) , wideth_biao, height_biao, null);
// 水印文件结束
g.dispose();
ImageIO.write((BufferedImage) image, "jpg", new File(destImageFile));
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* 给图片添加文字水印
* @param pressText 水印文字
* @param srcImageFile 源图像地址
* @param destImageFile 目标图像地址
* @param fontName 水印的字体名称
* @param fontStyle 水印的字体样式
* @param color 水印的字体颜色
* @param fontSize 水印的字体大小
* @param x 修正值
* @param y 修正值
* @param alpha 透明度：alpha 必须是范围 [0.0, 1.0] 之内（包含边界值）的一个浮点数字
*/
public static boolean pressText(String pressText,
String srcImageFile, String destImageFile, String fontName,
int fontStyle, Color color, int fontSize,int x,
int y, float alpha) {
try {
File file = new File(srcImageFile);
BufferedImage src = ImageIO.read(file); // 读入文件
Iterator<ImageReader> readers = ImageIO.getImageReadersByFormatName("jpg");
ImageReader reader = (ImageReader) readers.next();
ImageInputStream iis = ImageIO.createImageInputStream(file);
reader.setInput(iis, true);
int width = reader.getWidth(0); // 得到源图宽
int height = reader.getHeight(0); // 得到源图长
BufferedImage image = new BufferedImage(width, height,
BufferedImage.TYPE_INT_RGB);
Graphics2D g = image.createGraphics();
g.drawImage(src, 0, 0, width, height, null);
g.setColor(color);
g.setFont(new Font(fontName, fontStyle, fontSize));
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP,
alpha));
// 在指定坐标绘制水印文字
g.drawString(pressText, (width - (getLength(pressText) * fontSize))
/ 2 + x, (height - fontSize) / 2 + y);
g.dispose();
ImageIO.write(image, "jpg", new File(destImageFile));// 输出到文件流
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* 计算text的长度（一个中文算两个字符）
* @param text
* @return
*/
public static int getLength(String text) {
int length = 0;
for (int i = 0; i < text.length(); i++) {
if (new String(text.charAt(i) + "").getBytes().length > 1) {
length += 2;
} else {
length += 1;
}
}
return length / 2;
}
}