org/bouncycastle/jce/provider/BouncyCastleProvider :NoClassDefFoundError

Question

我升级了插件id 'org.springframework.boot' version '2.6.5'，这导致了以下更改

plugins {
    id 'java'
    id 'org.springframework.boot' version '2.6.5'
    id 'io.spring.dependency-management' version '1.0.11.RELEASE'
    id 'jacoco'
    id 'org.barfuin.gradle.jacocolog' version '1.0.1'
}

bootRun {
    args = [
            '--spring.config.location=./src/configs.properties',
    ]
}

springBoot {
    mainClass = 'com.company.service.ServiceClass'
}

jar {
    // This would avoid creating an additional "-plain" jar
    enabled = true
    archiveClassifier = ''
    // Before the plugin upgrade I wasnt getting manifest attribute related error. Because of one of such errors, I added it the attribute explicitly.
    manifest {
        attributes 'Main-Class': 'com.company.service.ServiceClass'
    }
}

bootJar {
    layered {
        enabled = true
    }
}

dependencies {
    testImplementation group: 'junit', name: 'junit', version: '4.12'
    implementation 'org.bouncycastle:bcprov-jdk16:1.46'
    implementation 'org.immutables:value:2.9.0'
    implementation('org.apache.lucene:lucene-core:8.10.0')
    implementation('com.fasterxml.jackson.core:jackson-core:2.13.2')
    implementation('com.fasterxml.jackson.core:jackson-annotations:2.13.2')
    implementation('com.fasterxml.jackson.core:jackson-databind:2.13.2')
    implementation('org.apache.poi:poi-ooxml:5.2.2')
    implementation('io.netty:netty-codec:4.1.75.Final')
    implementation 'com.fasterxml.jackson.dataformat:jackson-dataformat-cbor:2.13.2'
    compileOnly 'org.projectlombok:lombok:1.18.22'
    annotationProcessor 'org.projectlombok:lombok:1.18.22'
    annotationProcessor 'org.immutables:value:2.9.0'

    implementation('org.springframework.boot:spring-boot-starter-web:2.6.5') {
        testImplementation('org.springframework.boot:spring-boot-starter-test') {
            exclude group: 'org.springframework.boot', module: 'spring-boot-starter-logging'
            exclude group: 'org.slf4j', module: 'slf4j-simple'
            exclude group: 'org.slf4j', module: 'slf4j-log4j12'
            exclude group: 'org.slf4j', module: 'jcl-over-slf4j'
            exclude group: 'ch.qos.logback', module: 'logback-classic'
        }
        exclude group: 'org.springframework.boot', module: 'spring-boot-starter-logging'
        exclude group: 'org.slf4j', module: 'slf4j-simple'
        exclude group: 'org.slf4j', module: 'slf4j-log4j12'
        exclude group: 'org.slf4j', module: 'jcl-over-slf4j'
        exclude group: 'ch.qos.logback', module: 'logback-classic'
        implementation('org.apache.tomcat.embed:tomcat-embed-core:9.0.54')
    }
    implementation('org.springframework.boot:spring-boot-starter-security:2.6.5') {
        exclude group: 'org.springframework.boot', module: 'spring-boot-starter-logging'
        exclude group: 'org.slf4j', module: 'slf4j-simple'
        exclude group: 'org.slf4j', module: 'slf4j-log4j12'
        exclude group: 'org.slf4j', module: 'jcl-over-slf4j'
        exclude group: 'ch.qos.logback', module: 'logback-classic'
    }

    implementation('org.keycloak:keycloak-spring-boot-starter:17.0.1') {
        exclude group: 'org.springframework.boot', module: 'spring-boot-starter-logging'
        exclude group: 'org.slf4j', module: 'slf4j-simple'
        exclude group: 'org.slf4j', module: 'slf4j-log4j12'
        exclude group: 'org.slf4j', module: 'jcl-over-slf4j'
        exclude group: 'ch.qos.logback', module: 'logback-classic'
    }
    implementation('org.keycloak.bom:keycloak-adapter-bom:17.0.1')
    implementation('io.springfox:springfox-boot-starter:3.0.0')
    implementation('io.springfox:springfox-swagger-ui:3.0.0')
}
// some jacoco and checkstyle configs here.

运行jar时，会得到以下错误

>> java -jar build/libs/service-1.0-SNAPSHOT.jar
Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main" java.lang.NoClassDefFoundError: org/bouncycastle/jce/provider/BouncyCastleProvider
    at java.lang.Class.getDeclaredMethods0(Native Method)

从我在SO上找到的解决方案中，我添加了依赖项。

implementation group: 'org.bouncycastle', name: 'bcprov-jdk16', version: '1.46'

但这不管用。另外，我仍然在使用jdk8，而且jdk8也没有org.bouncycastle。有什么建议可以解决这个问题吗？

编辑:使用intelliJ运行应用程序不会引发这个问题。但在从命令行运行时会发生。

编辑：

>> % java -version
openjdk version "1.8.0_292"
OpenJDK Runtime Environment (AdoptOpenJDK)(build 1.8.0_292-b10)
OpenJDK 64-Bit Server VM (AdoptOpenJDK)(build 25.292-b10, mixed mode)

全堆栈跟踪

% java -jar build/libs/my-service-class.jar 
Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main" java.lang.NoClassDefFoundError: org/bouncycastle/jce/provider/BouncyCastleProvider
    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:650)
    at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:632)
Caused by: java.lang.ClassNotFoundException: org.bouncycastle.jce.provider.BouncyCastleProvider
    at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:352)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
    ... 7 more

Answer 1

使用

运行应用程序的intelliJ不会引发这个问题。但在从命令行运行时会发生。

java -jar build/libs/my-service-class.jar

为了直接从命令行执行jar，它应该包含清单信息。假设前面提到的jar包含的内容与您所面临的其他问题相同(类def未找到)，那么您的jar my-service-class.jar看起来是瘦jar，并且不包含您在项目中添加的其他依赖项。解决这个问题的两种方法。您可以使用可用插件来创建uber、i.Ejar，然后执行命令，或者只需将所有所需的依赖项添加到某个文件夹中，并在运行上面的命令时给出路径。