基于Java实现修改图片分辨率示例代码-编程学习网

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;
 

public class ModifyImageResolution {
  
  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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基于Java实现修改图片分辨率示例代码

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