Java Spring gradle构建jar找不到具有NoClassDefFoundError的主类

我使用gradle在spring框架测试代码中构建jar文件

我运行jar文件“java-jar-jarFile.jar” 但是，它不能运行一些错误代码

我检查了spring项目的build.gradle文件中的主要类属性 jar文件中的MANIFEST.FM文件

Manifest-Version: 1.0
Implementation-Title: recipe_2_2
Implementation-Version: 0.0.1-SNAPSHOT
Main-Class: com.apress.springrecipes.shop.Main

这是我的主要类java代码

package com.apress.springrecipes.sequence;

import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;

import com.apress.springrecipes.sequence.config.SequenceConfiguration;

public class Main {

    public static void main(String[] args) {

        ApplicationContext context =
                new AnnotationConfigApplicationContext(SequenceConfiguration.class);

        SequenceGenerator generator = context.getBean(SequenceGenerator.class);

        System.out.println(generator.getSequence());
        System.out.println(generator.getSequence());
    }
}

这是我的build.gradle文件

apply plugin: 'java'
apply plugin: 'eclipse'
apply plugin: 'application'

mainClassName = "com.apress.springrecipes.sequence.Main"

repositories {
    mavenCentral()
}

jar {
    baseName = "${rootProject.name}"
    version =  "0.0.1-SNAPSHOT"
    manifest {
        attributes "Implementation-Title": "${rootProject.name}",
                   "Implementation-Version": version,
                   "Main-Class": "${mainClassName}"
    }
}

sourceCompatibility = 1.8
targetCompatibility = 1.8

ext {
    springVersion = '4.2.0.RELEASE'
}

[compileJava, compileTestJava]*.options*.encoding = 'UTF-8'

dependencies {
    compile "org.springframework:spring-core:${springVersion}"
    compile "org.springframework:spring-context:${springVersion}"
    compile "org.slf4j:slf4j-simple:1.7.25"
}

这是jar文件中的MANIFEST.FM文件

Manifest-Version: 1.0
Implementation-Title: recipe_2_2
Implementation-Version: 0.0.1-SNAPSHOT
Main-Class: com.apress.springrecipes.shop.Main

当我运行jar文件时，会收到错误消息

Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main" java.lang.NoClassDefFoundError: org/springframework/context/ApplicationContext
    at java.lang.Class.getDeclaredMethods0(Native Method)
    at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
    at java.lang.Class.privateGetMethodRecursive(Class.java:3048)
    at java.lang.Class.getMethod0(Class.java:3018)
    at java.lang.Class.getMethod(Class.java:1784)
    at sun.launcher.LauncherHelper.validateMainClass(LauncherHelper.java:544)
    at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:526)
Caused by: java.lang.ClassNotFoundException: org.springframework.context.ApplicationContext
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:338)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 7 more

---

如何修复它？

gradle“应用程序”插件将在构建/分发版中输出zip文件，因此您可以将其解压缩到一个文件夹中，其中包含bin/，lib/

你可以像这样运行你的程序

bin/${rootProject.name}

---

请不要直接在库中运行jar文件

你能发布

Main

类代码吗？@JonathanJohx我发布它！看起来您是从其他主类构建的，所以请确保在主类中运行，以便创建新的jar