基于Java实现修改图片分辨率示例代码
作者：剑客阿良_ALiang
这篇文章主要介绍了一个可以修改图片分辨率的java工具类，文中的示例代码讲解详细，对学习JAVA有一定的帮助，感兴趣的小伙伴快来跟随小编一起学习吧
前言
本文提供可以修改图片分辨率的java工具类，实用主义的狂欢。
环境依赖
添加必要的一些maven依赖。
<dependency>
<groupId>cn.hutool</groupId>
<artifactId>hutool-all</artifactId>
<version>5.7.15</version>
</dependency>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>31.0.1-jre</version>
</dependency>
<dependency>
<groupId>org.bytedeco</groupId>
<artifactId>javacv-platform</artifactId>
<version>1.5.5</version>
</dependency>
代码
不废话，上代码。
import cn.hutool.core.util.IdUtil;
import com.google.common.base.Joiner;
import com.google.common.base.Splitter;
import org.bytedeco.javacpp.Loader;
import java.io.File;
import java.text.MessageFormat;
import java.util.Arrays;
import java.util.List;
/**
* @Program: csdn @ClassName: ModifyImageResolution @Author: 剑客阿良_ALiang @Date: 2021-12-12
* 13:37 @Description: 修改图片分辨率 @Version: V1.0
*/
public class ModifyImageResolution {
/**
* 修改图片分辨率
*
* @param imagePath 原图片地址
* @param outputDir 输出目录
* @param width 宽度
* @param height 高度
* @return 图片地址
* @throws Exception 异常
*/
public static String modifyResolution(
String imagePath, String outputDir, Integer width, Integer height) throws Exception {
List<String> paths = Splitter.on(".").splitToList(imagePath);
String ext = paths.get(paths.size() - 1);
if (!Arrays.asList("jpg", "png").contains(ext)) {
throw new Exception("format error");
}
String resultPath =
Joiner.on(File.separator).join(Arrays.asList(outputDir, IdUtil.simpleUUID() + "." + ext));
String ffmpeg = Loader.load(org.bytedeco.ffmpeg.ffmpeg.class);
ProcessBuilder builder =
new ProcessBuilder(
ffmpeg,
"-i",
imagePath,
"-vf",
MessageFormat.format("scale={0}:{1}", String.valueOf(width), String.valueOf(height)),
resultPath);
builder.inheritIO().start().waitFor();
return resultPath;
}
}
代码说明：
1、modifyResolution方法入参分别为：原图片路径、输出目录地址、调整宽度、调整高度。
2、图片格式校验只有jpg、png，可以自行添加。
3、输出文件名避免重复使用uuid作为文件名。
验证一下
准备的图片如下：
执行代码：
public static void main(String[] args) throws Exception {
System.out.println(
modifyResolution(
"C:\\Users\\yi\\Desktop\\2053767.jpg", "C:\\Users\\yi\\Desktop", 1280, 720));
}
执行结果：
E:\Java\jdk1.8.0_40\bin\java.exe "-javaagent:E:\Program Files\JetBrains\IntelliJ IDEA 2020.1.1\lib\idea_rt.jar=4212:E:\Program Files\JetBrains\IntelliJ IDEA 2020.1.1\bin" -Dfile.encoding=UTF-8 -classpath 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reenect\0.5.7-1.5.5\libfreenect-0.5.7-1.5.5-linux-ppc64le.jar;C:\Users\yi\.m2\repository\org\bytedeco\libfreenect\0.5.7-1.5.5\libfreenect-0.5.7-1.5.5-macosx-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\libfreenect\0.5.7-1.5.5\libfreenect-0.5.7-1.5.5-windows-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\libfreenect\0.5.7-1.5.5\libfreenect-0.5.7-1.5.5-windows-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\libfreenect2-platform\0.2.0-1.5.5\libfreenect2-platform-0.2.0-1.5.5.jar;C:\Users\yi\.m2\repository\org\bytedeco\libfreenect2\0.2.0-1.5.5\libfreenect2-0.2.0-1.5.5-linux-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\libfreenect2\0.2.0-1.5.5\libfreenect2-0.2.0-1.5.5-linux-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\libfreenect2\0.2.0-1.5.5\libfreenect2-0.2.0-1.5.5-macosx-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\libfreenect2\0.2.0-1.5.5\libfreenect2-0.2.0-1.5.5-windows-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\librealsense-platform\1.12.4-1.5.5\librealsense-platform-1.12.4-1.5.5.jar;C:\Users\yi\.m2\repository\org\bytedeco\librealsense\1.12.4-1.5.5\librealsense-1.12.4-1.5.5-linux-armhf.jar;C:\Users\yi\.m2\repository\org\bytedeco\librealsense\1.12.4-1.5.5\librealsense-1.12.4-1.5.5-linux-arm64.jar;C:\Users\yi\.m2\repository\org\bytedeco\librealsense\1.12.4-1.5.5\librealsense-1.12.4-1.5.5-linux-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\librealsense\1.12.4-1.5.5\librealsense-1.12.4-1.5.5-linux-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\librealsense\1.12.4-1.5.5\librealsense-1.12.4-1.5.5-macosx-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\librealsense\1.12.4-1.5.5\librealsense-1.12.4-1.5.5-windows-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\librealsense\1.12.4-1.5.5\librealsense-1.12.4-1.5.5-windows-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\librealsense2-platform\2.40.0-1.5.5\librealsense2-platform-2.40.0-1.5.5.jar;C:\Users\yi\.m2\repository\org\bytedeco\librealsense2\2.40.0-1.5.5\librealsense2-2.40.0-1.5.5-linux-armhf.jar;C:\Users\yi\.m2\repository\org\bytedeco\librealsense2\2.40.0-1.5.5\librealsense2-2.40.0-1.5.5-linux-arm64.jar;C:\Users\yi\.m2\repository\org\bytedeco\librealsense2\2.40.0-1.5.5\librealsense2-2.40.0-1.5.5-linux-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\librealsense2\2.40.0-1.5.5\librealsense2-2.40.0-1.5.5-linux-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\librealsense2\2.40.0-1.5.5\librealsense2-2.40.0-1.5.5-macosx-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\librealsense2\2.40.0-1.5.5\librealsense2-2.40.0-1.5.5-windows-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\librealsense2\2.40.0-1.5.5\librealsense2-2.40.0-1.5.5-windows-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\videoinput-platform\0.200-1.5.5\videoinput-platform-0.200-1.5.5.jar;C:\Users\yi\.m2\repository\org\bytedeco\videoinput\0.200-1.5.5\videoinput-0.200-1.5.5-windows-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\videoinput\0.200-1.5.5\videoinput-0.200-1.5.5-windows-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\artoolkitplus-platform\2.3.1-1.5.5\artoolkitplus-platform-2.3.1-1.5.5.jar;C:\Users\yi\.m2\repository\org\bytedeco\artoolkitplus\2.3.1-1.5.5\artoolkitplus-2.3.1-1.5.5-android-arm.jar;C:\Users\yi\.m2\repository\org\bytedeco\artoolkitplus\2.3.1-1.5.5\artoolkitplus-2.3.1-1.5.5-android-arm64.jar;C:\Users\yi\.m2\repository\org\bytedeco\artoolkitplus\2.3.1-1.5.5\artoolkitplus-2.3.1-1.5.5-android-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\artoolkitplus\2.3.1-1.5.5\artoolkitplus-2.3.1-1.5.5-android-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\artoolkitplus\2.3.1-1.5.5\artoolkitplus-2.3.1-1.5.5-linux-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\artoolkitplus\2.3.1-1.5.5\artoolkitplus-2.3.1-1.5.5-linux-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\artoolkitplus\2.3.1-1.5.5\artoolkitplus-2.3.1-1.5.5-linux-armhf.jar;C:\Users\yi\.m2\repository\org\bytedeco\artoolkitplus\2.3.1-1.5.5\artoolkitplus-2.3.1-1.5.5-linux-arm64.jar;C:\Users\yi\.m2\repository\org\bytedeco\artoolkitplus\2.3.1-1.5.5\artoolkitplus-2.3.1-1.5.5-linux-ppc64le.jar;C:\Users\yi\.m2\repository\org\bytedeco\artoolkitplus\2.3.1-1.5.5\artoolkitplus-2.3.1-1.5.5-macosx-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\artoolkitplus\2.3.1-1.5.5\artoolkitplus-2.3.1-1.5.5-windows-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\artoolkitplus\2.3.1-1.5.5\artoolkitplus-2.3.1-1.5.5-windows-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\flandmark-platform\1.07-1.5.5\flandmark-platform-1.07-1.5.5.jar;C:\Users\yi\.m2\repository\org\bytedeco\flandmark\1.07-1.5.5\flandmark-1.07-1.5.5-android-arm.jar;C:\Users\yi\.m2\repository\org\bytedeco\flandmark\1.07-1.5.5\flandmark-1.07-1.5.5-android-arm64.jar;C:\Users\yi\.m2\repository\org\bytedeco\flandmark\1.07-1.5.5\flandmark-1.07-1.5.5-android-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\flandmark\1.07-1.5.5\flandmark-1.07-1.5.5-android-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\flandmark\1.07-1.5.5\flandmark-1.07-1.5.5-linux-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\flandmark\1.07-1.5.5\flandmark-1.07-1.5.5-linux-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\flandmark\1.07-1.5.5\flandmark-1.07-1.5.5-linux-armhf.jar;C:\Users\yi\.m2\repository\org\bytedeco\flandmark\1.07-1.5.5\flandmark-1.07-1.5.5-linux-arm64.jar;C:\Users\yi\.m2\repository\org\bytedeco\flandmark\1.07-1.5.5\flandmark-1.07-1.5.5-linux-ppc64le.jar;C:\Users\yi\.m2\repository\org\bytedeco\flandmark\1.07-1.5.5\flandmark-1.07-1.5.5-macosx-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\flandmark\1.07-1.5.5\flandmark-1.07-1.5.5-windows-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\flandmark\1.07-1.5.5\flandmark-1.07-1.5.5-windows-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\leptonica-platform\1.80.0-1.5.5\leptonica-platform-1.80.0-1.5.5.jar;C:\Users\yi\.m2\repository\org\bytedeco\leptonica\1.80.0-1.5.5\leptonica-1.80.0-1.5.5-android-arm.jar;C:\Users\yi\.m2\repository\org\bytedeco\leptonica\1.80.0-1.5.5\leptonica-1.80.0-1.5.5-android-arm64.jar;C:\Users\yi\.m2\repository\org\bytedeco\leptonica\1.80.0-1.5.5\leptonica-1.80.0-1.5.5-android-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\leptonica\1.80.0-1.5.5\leptonica-1.80.0-1.5.5-android-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\leptonica\1.80.0-1.5.5\leptonica-1.80.0-1.5.5-linux-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\leptonica\1.80.0-1.5.5\leptonica-1.80.0-1.5.5-linux-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\leptonica\1.80.0-1.5.5\leptonica-1.80.0-1.5.5-linux-armhf.jar;C:\Users\yi\.m2\repository\org\bytedeco\leptonica\1.80.0-1.5.5\leptonica-1.80.0-1.5.5-linux-arm64.jar;C:\Users\yi\.m2\repository\org\bytedeco\leptonica\1.80.0-1.5.5\leptonica-1.80.0-1.5.5-linux-ppc64le.jar;C:\Users\yi\.m2\repository\org\bytedeco\leptonica\1.80.0-1.5.5\leptonica-1.80.0-1.5.5-macosx-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\leptonica\1.80.0-1.5.5\leptonica-1.80.0-1.5.5-windows-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\leptonica\1.80.0-1.5.5\leptonica-1.80.0-1.5.5-windows-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\tesseract-platform\4.1.1-1.5.5\tesseract-platform-4.1.1-1.5.5.jar;C:\Users\yi\.m2\repository\org\bytedeco\tesseract\4.1.1-1.5.5\tesseract-4.1.1-1.5.5-android-arm.jar;C:\Users\yi\.m2\repository\org\bytedeco\tesseract\4.1.1-1.5.5\tesseract-4.1.1-1.5.5-android-arm64.jar;C:\Users\yi\.m2\repository\org\bytedeco\tesseract\4.1.1-1.5.5\tesseract-4.1.1-1.5.5-android-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\tesseract\4.1.1-1.5.5\tesseract-4.1.1-1.5.5-android-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\tesseract\4.1.1-1.5.5\tesseract-4.1.1-1.5.5-linux-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\tesseract\4.1.1-1.5.5\tesseract-4.1.1-1.5.5-linux-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\tesseract\4.1.1-1.5.5\tesseract-4.1.1-1.5.5-linux-armhf.jar;C:\Users\yi\.m2\repository\org\bytedeco\tesseract\4.1.1-1.5.5\tesseract-4.1.1-1.5.5-linux-arm64.jar;C:\Users\yi\.m2\repository\org\bytedeco\tesseract\4.1.1-1.5.5\tesseract-4.1.1-1.5.5-linux-ppc64le.jar;C:\Users\yi\.m2\repository\org\bytedeco\tesseract\4.1.1-1.5.5\tesseract-4.1.1-1.5.5-macosx-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\tesseract\4.1.1-1.5.5\tesseract-4.1.1-1.5.5-windows-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\tesseract\4.1.1-1.5.5\tesseract-4.1.1-1.5.5-windows-x86_64.jar;C:\Users\yi\.m2\repository\xyz\downgoon\snowflake\1.0.0\snowflake-1.0.0.jar com.huyi.csdn.tools.ModifyImageResolution
C:\Users\yi\.javacpp\cache\ffmpeg-4.3.2-1.5.5-windows-x86_64.jar\org\bytedeco\ffmpeg\windows-x86_64\ffmpeg.exe
ffmpeg version 4.3.2 Copyright (c) 2000-2021 the FFmpeg developers
built with gcc 10.2.0 (Rev5, Built by MSYS2 project)
configuration: --prefix=.. --disable-iconv --disable-opencl --disable-sdl2 --disable-bzlib --disable-lzma --disable-linux-perf --enable-shared --enable-version3 --enable-runtime-cpudetect --enable-zlib --enable-libmp3lame --enable-libspeex --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvo-amrwbenc --enable-openssl --enable-libopenh264 --enable-libvpx --enable-libfreetype --enable-libopus --enable-cuda --enable-cuvid --enable-nvenc --enable-libmfx --enable-w32threads --enable-indev=dshow --target-os=mingw32 --cc='gcc -m64' --extra-cflags=-I../include/ --extra-ldflags=-L../lib/ --extra-libs='-static-libgcc -static-libstdc++ -Wl,-Bstatic -lstdc++ -lgcc_eh -lWs2_32 -lcrypt32 -lpthread -lz -lm -Wl,-Bdynamic -lole32 -luuid'
libavutil 56. 51.100 / 56. 51.100
libavcodec 58. 91.100 / 58. 91.100
libavformat 58. 45.100 / 58. 45.100
libavdevice 58. 10.100 / 58. 10.100
libavfilter 7. 85.100 / 7. 85.100
libswscale 5. 7.100 / 5. 7.100
libswresample 3. 7.100 / 3. 7.100
Input #0, image2, from 'C:\Users\yi\Desktop\2053767.jpg':
Duration: 00:00:00.04, start: 0.000000, bitrate: 177398 kb/s
Stream #0:0: Video: mjpeg (Progressive), yuvj444p(pc, bt470bg/unknown/unknown), 1920x1080, 25 tbr, 25 tbn, 25 tbc
Stream mapping:
Stream #0:0 -> #0:0 (mjpeg (native) -> mjpeg (native))
Press [q] to stop, [?] for help
[swscaler @ 0000015bc83f50c0] deprecated pixel format used, make sure you did set range correctly
Output #0, image2, to 'C:\Users\yi\Desktop\8a7e61cc06c64d17916b2dae6da92322.jpg':
Metadata:
encoder : Lavf58.45.100
Stream #0:0: Video: mjpeg, yuvj444p(pc), 1280x720, q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc
Metadata:
encoder : Lavc58.91.100 mjpeg
Side data:
cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: N/A
frame= 1 fps=0.0 q=6.0 Lsize=N/A time=00:00:00.04 bitrate=N/A speed=0.161x
video:106kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
C:\Users\yi\Desktop\8a7e61cc06c64d17916b2dae6da92322.jpg
Process finished with exit code 0
执行效果：
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