具有OpenJDK 11.0.2和BouncyCastleProvider的Maven

Question

1. Maven正确构建

   ＃mvn原型：生成-DgroupId = com.help.idea -DartifactId =客户端-DarchetypeArtifactId = maven-archetype-quickstart -DarchetypeVersion = 1.4 -DinteractiveMode = false

   ＃mvn install：安装文件-Dfile = rs2xml.jar -DgroupId = net.proteanit.sql -DartifactId = rs2xml -Dversion = 1.0 -Dpackaging = jar

   ＃mvn软件包

2. 但是运行罐子时出现以下错误

   java -jar target/client-1.0-SNAPSHOT.jar
   
   Exception in thread "main" java.lang.NoClassDefFoundError: org/bouncycastle/jce/provider/BouncyCastleProvider
       at com.help.idea.authen.ClientMain.main(ClientMain.java:76)
   Caused by: java.lang.ClassNotFoundException: org.bouncycastle.jce.provider.BouncyCastleProvider
       at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:582)
       at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
       at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
   

我有以下pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>com.help.idea</groupId>
  <artifactId>client</artifactId>
  <version>1.0-SNAPSHOT</version>

  <name>client</name>
  <!-- FIXME change it to the project's website -->
  <url>http://www.example.com</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>11</maven.compiler.source>
    <maven.compiler.target>11</maven.compiler.target>
  </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>

<!-- https://mvnrepository.com/artifact/com.jgoodies/jgoodies-common -->
<dependency>
    <groupId>com.jgoodies</groupId>
    <artifactId>jgoodies-common</artifactId>
    <version>1.8.1</version>
</dependency>

<!-- https://mvnrepository.com/artifact/com.jgoodies/forms -->
<dependency>
    <groupId>com.jgoodies</groupId>
    <artifactId>forms</artifactId>
    <version>1.2.1</version>
</dependency>



<!-- https://mvnrepository.com/artifact/org.bouncycastle/bcprov-jdk15on -->
<dependency>
    <groupId>org.bouncycastle</groupId>
    <artifactId>bcprov-jdk15on</artifactId>
    <version>1.65</version>
</dependency>
<!-- https://mvnrepository.com/artifact/commons-dbutils/commons-dbutils -->
<dependency>
    <groupId>commons-dbutils</groupId>
    <artifactId>commons-dbutils</artifactId>
    <version>1.7</version>
</dependency>
<!-- https://mvnrepository.com/artifact/xml-apis/xml-apis -->
<dependency>
  <build>
    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
      <plugins>
        <!-- clean lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#clean_Lifecycle -->

        <plugin>
          <artifactId>maven-clean-plugin</artifactId>
          <version>3.1.0</version>
        </plugin>
        <!-- default lifecycle, jar packaging: see https://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_jar_packaging -->

        <plugin>
          <artifactId>maven-resources-plugin</artifactId>
          <version>3.0.2</version>
        </plugin>

        <plugin>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>3.8.0</version>
          <configuration>
                <release>11</release>
          </configuration>
        </plugin>

        <plugin>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>2.22.1</version>
        </plugin>

        <plugin>
          <artifactId>maven-jar-plugin</artifactId>
          <version>3.0.2</version>
            <configuration>
        <archive>
          <manifest>
            <addClasspath>true</addClasspath>
            <classpathPrefix>lib/</classpathPrefix>
            <mainClass>com.help.idea.authen.ClientMain</mainClass>
          </manifest>
        </archive>
      </configuration>
        </plugin>

        <plugin>
          <artifactId>maven-install-plugin</artifactId>
          <version>2.5.2</version>
        </plugin>

        <plugin>
          <artifactId>maven-deploy-plugin</artifactId>
          <version>2.8.2</version>
        </plugin>
        <!-- site lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#site_Lifecycle -->

        <plugin>
          <artifactId>maven-site-plugin</artifactId>
          <version>3.7.1</version>
        </plugin>
        <plugin>
          <artifactId>maven-project-info-reports-plugin</artifactId>
          <version>3.0.0</version>
        </plugin>

        </plugins>
    </pluginManagement>
  </build>
</project>

尝试了Google的许多建议，但都做对了。预先感谢。

Answer 1

欢迎使用StackOverflow。 👋错误消息告诉您您的班级ClientMain无法访问班级BouncyCastleProvider。原因可能是您启动的Java虚拟机（JVM）看不到包含该类的JAR。此类JAR必须用the --class-path option提及。

查看启动命令，您可以看到没有指定类路径。解决此问题的一种方法是使用--class-path选项枚举所有直接和可传递的依赖项（尽管这需要很多工作）。

另一方面，该项目可能创建了一个包含所有依赖项的所谓的--class-path。那，您可以用这么短的命令启动。看一下fat JAR文件夹，看看是否还有另一个可以用来启动的JAR。可能名称中带有target的东西（不要启动名称中带有-jar-with-dependencies或sources的东西，这毫无意义）。

如果这不能解决您的问题，请按照javadoc并向我们显示完整的pom，以便我们可以看到整个上下文。