java图片增加马赛克
- 粘贴即用 具体需要根据项目情况进行调整
粘贴即用 具体需要根据项目情况进行调整
借鉴了许多代码粘贴的 不是原创 只是代码的拼凑师
package com.ruoyi.hfiveinterface.util;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.io.*;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.List;
import javax.imageio.ImageIO;
import org.springframework.stereotype.Service;
/**
* 图片增加马赛克工具类
*/
@Service
public class PhototMosaicUtil {
/**
* 给图片指定位置打马赛克
* @param filePath 图片位置
* @param targetPath 打码后的图片保存位置，若为空则保存路径默认为原图片路径
* @param x 图片要打码区域左上角的横坐标
* @param y 图片要打码区域左上角的纵坐标
* @param width 图片要打码区域的宽度
* @param height 图片要打码区域的高度
* @param mosaicSize 马赛克尺寸，即每个矩形的长宽
* @return
* @throws IOException
*/
@SuppressWarnings("static-access")
public static boolean mosaic(String filePath, String targetPath,
int x, int y, int width, int height, int mosaicSize) throws IOException {
//1. 初始化图像处理各变量
if (!filePath.endsWith(".png") && !filePath.endsWith(".jpg") &&
!filePath.endsWith(".gif")) {
System.err.println("ImageUtil>>>文件名非法，不是正确的图片文件名");
return false;
}
int index = filePath.lastIndexOf(".");
String suffix = filePath.substring(index + 1);
if (targetPath != null && !targetPath.endsWith(suffix)) {
System.err.println("ImageUtil>>>目标文件后缀应与源文件后缀一致");
return false;
}
File file = new File(filePath);
if (!file.isFile()) {
System.err.println("ImageUtil>>>" + filePath + "不是一个文件！");
return false;
}
BufferedImage bi = ImageIO.read(file); // 读取该图片
BufferedImage spinImage = new BufferedImage(bi.getWidth(),
bi.getHeight(), bi.TYPE_INT_RGB);
if (bi.getWidth() < mosaicSize || bi.getHeight() < mosaicSize || mosaicSize <= 0) { // 马赛克格尺寸太大或太小
System.err.println("马赛克尺寸设置不正确");
return false;
}
//2. 设置各方向绘制的马赛克块个数
int xcount = 0; // 方向绘制个数
int ycount = 0; // y方向绘制个数
if (width % mosaicSize == 0) {
xcount = width / mosaicSize;
} else {
xcount = width / mosaicSize + 1;
}
if (height % mosaicSize == 0) {
ycount = height / mosaicSize;
} else {
ycount = height / mosaicSize + 1;
}
//3. 绘制马赛克(绘制矩形并填充颜色)
Graphics gs = spinImage.getGraphics();
gs.drawImage(bi, 0, 0, null);
int xTmp = x;
int yTmp = y;
for (int i = 0; i < xcount; i++) {
for (int j = 0; j < ycount; j++) {
//马赛克矩形格大小
int mwidth = mosaicSize;
int mheight = mosaicSize;
if(i == xcount - 1){ //横向最后一个比较特殊，可能不够一个size
mwidth = width - xTmp;
}
if(j == ycount - 1){ //同理
mheight = height - yTmp;
}
//矩形颜色取中心像素点RGB值
int centerX = xTmp;
int centerY = yTmp;
if (mwidth % 2 == 0) {
centerX += mwidth / 2;
} else {
centerX += (mwidth - 1) / 2;
}
if (mheight % 2 == 0) {
centerY += mheight / 2;
} else {
centerY += (mheight - 1) / 2;
}
Color color = new Color(bi.getRGB(centerX, centerY));
gs.setColor(color);
gs.fillRect(xTmp, yTmp, mwidth, mheight);
yTmp = yTmp + mosaicSize;// 计算下一个矩形的y坐标
}
yTmp = y;// 还原y坐标
xTmp = xTmp + mosaicSize;// 计算x坐标
}
gs.dispose();
if (targetPath == null )
targetPath = filePath;
File sf = new File(targetPath);
ImageIO.write(spinImage, suffix, sf); // 保存图片
return true;
}
public static boolean mosaic(String filePath, String targetPath,
ImageArea area, int mosaicSize) throws IOException {
return mosaic(filePath, targetPath, area.getX(), area.getY(),
area.getWidth(), area.getHeight(), mosaicSize);
}
//链接url下载图片
/**
* 功能描述:
* @param: urlList 图片url地址
* @param: path 下载到本地的路径
*/
private static void downloadPicture(String urlList,String path) {
try {
URL url = new URL(urlList);
DataInputStream dataInputStream = new DataInputStream(url.openStream());
FileOutputStream fileOutputStream = new FileOutputStream(new File(path));
ByteArrayOutputStream output = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int length;
while ((length = dataInputStream.read(buffer)) > 0) {
output.write(buffer, 0, length);
}
fileOutputStream.write(output.toByteArray());
dataInputStream.close();
fileOutputStream.close();
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
public static void deleteFile(File file){
//判断文件不为null或文件目录存在
if (file == null || !file.exists()){
System.out.println("文件删除失败,请检查文件路径是否正确");
return;
}
//取得这个目录下的所有子文件对象
File[] files = file.listFiles();
//遍历该目录下的文件对象
for (File f: files){
//打印文件名
String name = file.getName();
System.out.println(name + "文件夹已清空");
//判断子目录是否存在子目录,如果是文件则删除
if (f.isDirectory()){
deleteFile(f);
}else {
f.delete();
}
}
//删除空文件夹 for循环已经把上一层节点的目录清空。
//file.delete();
}
/**
* 测试 图片打马赛克
* @param args
* @throws IOException
*/
public static void main(String[] args) throws IOException {
long time = System.currentTimeMillis();
System.out.println(time);
//先清空下载本地文件夹
File file = new File("D:\\subImgKouBei0917dowlond");//输入要删除文件目录的绝对路径
deleteFile(file);
//https路径存入 本地文件夹
String url =
"https://k2.autoimg.cn/koubeidfs/g4/M12/E7/36/480x360_1_q87_autohomecar__ChsFVmDcMmuAFEIAAAWSEQyzIJs599.jpg";
String path="D:\\subImgKouBei0917dowlond\\"+time+".jpg";
downloadPicture(url,path);
//再清空本地的 图片增加马赛克文件夹
File file2 = new File("D:\\subImgKouBei0917");//输入要删除文件目录的绝对路径
deleteFile(file2);
//获取下载的图片的 宽度和高度 用于计算增加马赛克的位置
File image=new File("D:\\subImgKouBei0917dowlond\\"+time+".jpg");
BufferedImage localImg = ImageIO.read(new FileInputStream(image));
int width=localImg.getWidth();
int height=localImg.getHeight();
//图片右下角增加马赛克
boolean successOrFail = mosaic("D:\\subImgKouBei0917dowlond\\"+time+".jpg",
"D:\\subImgKouBei0917\\"+time+".jpg", new ImageArea(width-60, height-20, 70, 40), 20);
if (successOrFail){
System.out.println("图片增加马赛克成功");
}else {
System.out.println("图片增加马赛克失败");
}
}
}package com.ruoyi.hfiveinterface.util;
import org.springframework.stereotype.Service;
/**
* 图片区域类
* @author hty
*
*/
@Service
public class ImageArea {
int x; //指定区域左上角横坐标
int y; //指定区域左上角纵坐标
int width; //指定区域宽度
int height; //指定区域高度
public ImageArea(int x, int y, int width, int height) {
super();
this.x = x;
this.y = y;
this.width = width;
this.height = height;
}
public int getX() {
return x;
}
public void setX(int x) {
this.x = x;
}
public int getY() {
return y;
}
public void setY(int y) {
this.y = y;
}
public int getWidth() {
return width;
}
public void setWidth(int width) {
this.width = width;
}
public int getHeight() {
return height;
}
public void setHeight(int height) {
this.height = height;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + height;
result = prime * result + width;
result = prime * result + x;
result = prime * result + y;
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
ImageArea other = (ImageArea) obj;
if (height != other.height)
return false;
if (width != other.width)
return false;
if (x != other.x)
return false;
if (y != other.y)
return false;
return true;
}
}
本文章为转载内容，我们尊重原作者对文章享有的著作权。如有内容错误或侵权问题，欢迎原作者联系我们进行内容更正或删除文章。
