java.lang.NoClassDefFoundError:无法初始化类org.bytedeco.javacpp.avutil [英] java.lang.NoClassDefFoundError: Could not initialize class org.bytedeco.javacpp.avutil

问题描述

我正在使用Windows10，JDK1.8版本的eclipse-neon， 我收到以下异常.

I am using Windows10, eclipse-neon with JDK1.8 version, I am getting the following exception.

Exception in thread "main" java.lang.NoClassDefFoundError: Could not initialize class org.bytedeco.javacpp.avutil
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at org.bytedeco.javacpp.Loader.load(Loader.java:385)
at org.bytedeco.javacpp.Loader.load(Loader.java:353)
at org.bytedeco.javacpp.avformat$AVFormatContext.<clinit>(avformat.java:2719)
at org.bytedeco.javacv.FFmpegFrameGrabber.startUnsafe(FFmpegFrameGrabber.java:391)
at org.bytedeco.javacv.FFmpegFrameGrabber.start(FFmpegFrameGrabber.java:385)
at com.segment.processor.AudioMain.main(ApacheMathAudioMain.java:20)
Error getting static method ID of org/bytedeco/javacpp/Loader/putMemberOffset

这是我在pom.xml中使用的依赖项

here are the dependencies I am using in my pom.xml

    <dependency>
        <groupId>org.bytedeco</groupId>
        <artifactId>javacv</artifactId>
        <version>1.2</version>
    </dependency>
    <dependency>
        <groupId>org.bytedeco.javacpp-presets</groupId>
        <artifactId>ffmpeg</artifactId>
        <version>3.0.2-1.2</version>
    </dependency>

    <dependency>
        <groupId>org.bytedeco.javacpp-presets</groupId>
        <artifactId>opencv</artifactId>
        <version>3.1.0-1.2</version>
    </dependency>

    <dependency>
        <groupId>org.bytedeco</groupId>
        <artifactId>javacpp</artifactId>
        <version>0.10</version>
    </dependency>

推荐答案

第一个问题

您的版本不匹配.版本0.10中的org.bytedeco.javacpp来自 2014年12月，而其他所有版本均来自 2016年5月.您需要使用org.bytedeco.javacpp的1.2版本，或者更好，将所有依赖项更新为最新版本.

Your versions don't match. org.bytedeco.javacpp in version 0.10 is from Dec 2014, while all your other versions are from May 2016. You need to use version 1.2 of org.bytedeco.javacpp, or better yet, update all dependencies to the latest version.

您可以在此处查看版本:

You can see the versions here:

org.bytedeco.javacpp-presets»opencv

org.bytedeco.javacpp-presets»ffmpeg

org.bytedeco»javacv

org.bytedeco»javacpp

第二个问题

您仅包括Java代码的依赖关系，但不包括本机代码的依赖关系(opencv和ffmpeg均为本机库).您需要改为包含opencv-platform和ffmpeg-platform:

You include the dependencies for Java code only, but you don't include the dependencies for native code (both opencv and ffmpeg are native libraries). You need to include opencv-platform and ffmpeg-platform instead:

<dependency>
    <groupId>org.bytedeco</groupId>
    <artifactId>javacpp</artifactId>
    <version>1.4.1</version>
</dependency>
<dependency>
    <groupId>org.bytedeco</groupId>
    <artifactId>javacv</artifactId>
    <version>1.4.1</version>
</dependency>
<dependency>
    <groupId>org.bytedeco.javacpp-presets</groupId>
    <artifactId>opencv-platform</artifactId>
    <version>3.4.1-1.4.1</version>
</dependency>
<dependency>
    <groupId>org.bytedeco.javacpp-presets</groupId>
    <artifactId>ffmpeg-platform</artifactId>
    <version>3.4.2-1.4.1</version>
</dependency>

这将使Maven下载并包含适用于Android，Linux，MacOS和Windows(x86和x64)的opencv和ffmpeg库.

This will make Maven download and include opencv and ffmpeg libraries for Android, Linux, MacOS and Windows, both x86 and x64.

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