Java将图片处理成背景透明的圆形图片

来源：互联网发布：关于大数据的新闻报道编辑：程序博客网时间：2024/05/28 15:49

/*
*
* @date 2017年9月4日
*/

import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.RenderingHints;
import java.awt.geom.Ellipse2D;
import java.awt.geom.RoundRectangle2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;

import javax.imageio.ImageIO;

import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class ImageUtils {
private static final Logger logger = LoggerFactory.getLogger(ImageUtils.class);

/** *  * @Title: 构造图片 * @Description: 生成水印并返回java.awt.image.BufferedImage * @param file *            源文件(图片) * @param waterFile *            水印文件(图片) * @param x *            距离右下角的X偏移量 * @param y *            距离右下角的Y偏移量 * @param alpha *            透明度, 选择值从0.0~1.0: 完全透明~完全不透明 * @return BufferedImage * @throws IOException */private static BufferedImage watermark(ImageParam param) throws IOException {    // 获取原图    BufferedImage buffImg = null;    if(isHttpFile(param.getSourceImagePath())){        InputStream sis = null;        try{            URL sourceUrl = new URL(param.getSourceImagePath());             sis = sourceUrl.openConnection().getInputStream();            buffImg = ImageIO.read(sis);          }catch(Exception e){            logger.error("读取源文件异常，{}",e);        }finally{            if(sis != null){                sis.close();            }        }    }else{        File file = null;        try{            file = new File(param.getSourceImagePath());            buffImg = ImageIO.read(file);        }catch(Exception e){            logger.error("读取源文件异常，{}",e);        }    }    // 获取二维码    BufferedImage waterImg = null;    if(isHttpFile(param.getQrCodeImagePath())){        InputStream sis = null;        try{            URL sourceUrl = new URL(param.getQrCodeImagePath());             sis = sourceUrl.openConnection().getInputStream();            waterImg = ImageIO.read(sis);          }catch(Exception e){            logger.error("读取二维码异常，{}",e);        }finally{            if(sis != null){                sis.close();            }        }    }else{        File file = null;        try{            file = new File(param.getQrCodeImagePath());            waterImg = ImageIO.read(file);        }catch(Exception e){            logger.error("读取二维码异常，{}",e);        }    }    //按照要求缩放二维码    if(param.getQrWidth() &gt; 0 &amp;&amp; param.getQrHeight() &gt; 0){        BufferedImage tag = new BufferedImage(param.getQrWidth(), param.getQrHeight(), BufferedImage.TYPE_INT_RGB);        tag.getGraphics().drawImage(waterImg, 0, 0,param.getQrWidth(), param.getQrHeight(), null);        waterImg = tag;    }    //合成图片    try{        int buffWidth = buffImg.getWidth();        int bufHeight = buffImg.getHeight();        // 创建Graphics2D对象，用在底图对象上绘图        Graphics2D g2d = buffImg.createGraphics();        int waterImgWidth = waterImg.getWidth();// 获取层图的宽度        int waterImgHeight = waterImg.getHeight();// 获取层图的高度        // 在图形和图像中实现混合和透明效果        g2d.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, param.getAlpha()));        // 绘制        int start = buffWidth- param.getX() - waterImgWidth;        int end = bufHeight- param.getY() - waterImgHeight;        if(start &lt; 0){            logger.error("X 设置过大");            start = 0;        }        if(end &lt; 0){            logger.error("Y 设置过大");        }        g2d.drawImage(waterImg, start, end , waterImgWidth, waterImgHeight, null);        g2d.dispose();// 释放图形上下文使用的系统资源    }catch(Exception e){        logger.error("合成图片字节流异常，{}",e);    }    return buffImg;}/** * 输出水印图片 *  * @param buffImg *            图像加水印之后的BufferedImage对象 * @param savePath *            图像加水印之后的保存路径 */private static boolean generateWaterFile(BufferedImage buffImg, String savePath) {    if(buffImg == null || StringUtils.isEmpty(savePath)){        return false;    }    boolean rs = false;    int temp = savePath.lastIndexOf(".") + 1;    try {        rs = ImageIO.write(buffImg, savePath.substring(temp), new File(savePath));    } catch (IOException e) {        logger.error("合成图片错误", e);        return false;    }    return rs;}/** * 参数校验 * @param param * @return */private static boolean checkParam(ImageParam param ){    if(param == null || StringUtils.isEmpty(param.getSourceImagePath()) || StringUtils.isEmpty(param.getQrCodeImagePath())            || StringUtils.isEmpty(param.getDestinyImagePath())){        return false;    }    return true;}/** * 判断path是否是web请求 * @param path * @return */private static boolean isHttpFile(String path){    if(!StringUtils.isEmpty(path) &amp;&amp; path.toLowerCase().startsWith("http")){        return true;    }    return false;}//合成图片public static boolean mergeImage(ImageParam param){    if(!checkParam(param)){        logger.error("参数不合法！{}",param.toString());        return false;    }    long start = System.currentTimeMillis();    try{        BufferedImage buffImg = watermark(param);        generateWaterFile(buffImg, param.getDestinyImagePath());  // 输出水印图片    }catch(IOException e){        logger.error("合成图片异常，{}",e);        return false;    }    long end = System.currentTimeMillis();    logger.info("合成图片耗时：{},合成地址：",(end - start),param.getDestinyImagePath());    return true;}/** * 画圆形图片，sourcePath是原图片路径，radius是圆形图片的半径 * @param sourcePath 原图片地址，不能为空 * @param destinyPath 目的图片地址，不能为空 * @param radius，不能为负数，为0或者null表示用图片的宽、高最小值做直径 * @return */public static boolean getCircleImage(CircleImageParam param){    if(StringUtils.isEmpty(param.getSourcePath()) || StringUtils.isEmpty(param.getDestinyPath())){        return false;    }    long start = System.currentTimeMillis();    // 获取原图片    BufferedImage waterImg = null;    try{        if(isHttpFile(param.getSourcePath())){            InputStream sis = null;            try{                URL sourceUrl = new URL(param.getSourcePath());                 sis = sourceUrl.openConnection().getInputStream();                waterImg = ImageIO.read(sis);              }catch(Exception e){                logger.error("读取原图片异常，{}",e);            }finally{                if(sis != null){                    sis.close();                }            }        }else{            File file = null;            try{                file = new File(param.getSourcePath());                waterImg = ImageIO.read(file);            }catch(Exception e){                logger.error("读取原图片异常，{}",e);            }        }    }catch(Exception e){        logger.error("图片转换成圆形失败", e);        return false;    }    //半径有设置时，以设置的半径为主    int width = waterImg.getWidth();    int height = waterImg.getHeight();    int getDiameter = (width &lt; height)?width:height;    if(param.getDiameter() != null &amp;&amp; param.getDiameter() &gt; 0){        getDiameter = param.getDiameter();    }    //按照要求缩放图片    BufferedImage tag = new BufferedImage(getDiameter, getDiameter, BufferedImage.TYPE_INT_RGB);    tag.getGraphics().drawImage(waterImg, 0, 0,getDiameter, getDiameter, null);    waterImg = tag;    //生成最终的图片    boolean rs = false;    Graphics2D g2 = null;    try {        tag = new BufferedImage(getDiameter, getDiameter, BufferedImage.TYPE_INT_ARGB);        g2 = tag.createGraphics();        g2.setComposite(AlphaComposite.Src);        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON);        g2.setColor(Color.WHITE);        g2.fill(new RoundRectangle2D.Float(0, 0, getDiameter, getDiameter, getDiameter,getDiameter));        g2.setComposite(AlphaComposite.SrcAtop);        g2.drawImage(waterImg, 0, 0, null);          int temp = param.getDestinyPath().lastIndexOf(".") + 1;        rs = ImageIO.write(tag,param.getDestinyPath().substring(temp), new File(param.getDestinyPath()));    } catch (IOException e) {        logger.error("合成图片错误", e);        return false;    }finally{        if(g2 != null){            g2.dispose();        }    }    long end = System.currentTimeMillis();    logger.info("生成圆角图片耗时：{},图片地址：",(end - start),param.getDestinyPath());    return rs;}/** *  * @param args * @throws IOException *             IO异常直接抛出了 * @author bls */public static void main(String[] args) throws IOException {

// String sourceFilePath = “https://z0.muscache.com/im/pictures/ec501732-e7bf-47d3-bdbb-cb2e9e5ddd6f.jpg“;
String waterFilePath = “https://gss0.bdstatic.com/94o3dSag_xI4khGkpoWK1HF6hhy/baike/c0%3Dbaike80%2C5%2C5%2C80%2C26/sign=fa9140accd95d143ce7bec711299e967/2934349b033b5bb571dc8c5133d3d539b600bc12.jpg“;

    String sourceFilePath = "C://image1.jpg";

// String waterFilePath = “C://image2.jpg”;
String saveFilePath = “C://new.png”;

// ImageParam param = new ImageParam();
// param.setSourceImagePath(sourceFilePath);//底层原图片地址必传
// param.setQrCodeImagePath(waterFilePath);//二维码图片必传
// param.setDestinyImagePath(saveFilePath);//目标保存图片路径必传
// param.setX(10); // 相对底层图片右下角的横轴像素点默认为0
// param.setY(100);// 相对底层图片右下角的纵轴像素点默认为0
//// param.setAlpha(0.5f);//二维码图片的透明度，默认为1
// param.setQrWidth(100);//二维码宽度
// param.setQrHeight(50);//二维码高度
//
// boolean rs = ImageUtils.mergeImage(param);
// System.out.println(“rs:” + rs);

    CircleImageParam circleParam = new CircleImageParam();    circleParam.setSourcePath(sourceFilePath);//可以是网络图片，可是是本地图片    circleParam.setDestinyPath(saveFilePath);//必须是本地图片，且图片格式必须是png    circleParam.setDiameter(300);//图片直径，不指定，则是原图片宽高的最小值    boolean r = ImageUtils.getCircleImage(circleParam);    System.out.println("r:" + r);}

}

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