java - 如何修复 org.osgi.framework.BundleException : Unable to cache bundle?

Question

我正在使用OSGi BundleActivator代码。当我尝试使用 Apache Karaf 安装它时，我总是得到 Unable to install bundle mvn:com.baeldung/osgi-intro-sample-activator/1.0-SNAPSHOT: org.osgi.framework.BundleException: Unable to cache bundle: mvn:com.baeldung/osgi-intro-sample-activator/1.0-SNAPSHOT错误。

我尝试遵循的教程在这里:https://www.baeldung.com/osgi

我使用的命令是bundle:install mvn:com.baeldung/osgi-intro-sample-activator/1.0-SNAPSHOT 。尝试添加 -s 标志或使用 install而不是bundle:install ，没有帮助。尝试从 Karaf 根目录和捆绑目录运行它，但没有帮助。

在 Karaf 文件夹中，我尝试设置 org.ops4j.pax.url.mvn.localRepository=/Users/bogdansalyp/.m2/repository ，没有帮助。

清空.m2/repository ，没有帮助。将其复制到 bundle 和 Karaf 文件夹中，但没有帮助。

尝试过mvn install和mvn clean install来自不同的目录，没有帮助。

Karaf 是 v4.2.6，maven 是 3.1.1

这是我的 pom.xml:

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0"
    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>
    <artifactId>osgi-intro-sample-activator</artifactId>
    <name>osgi-intro-sample-activator</name>
    <!-- Please, note this is not the usual 'jar'. -->
    <packaging>bundle</packaging>

    <!-- com.baeldung/osgi-intro-sample-activator/1.0-SNAPSHOT -->
    <parent>
        <artifactId>osgi</artifactId>
        <groupId>com.baeldung</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>

    <dependencies>
        <dependency>
            <groupId>org.osgi</groupId>
            <artifactId>org.osgi.core</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.felix</groupId>
                <artifactId>maven-bundle-plugin</artifactId>
                <extensions>true</extensions>
                <configuration>
                    <instructions>
                        <Bundle-SymbolicName>${project.groupId}.${project.artifactId}</Bundle-SymbolicName>
                        <Bundle-Name>${project.artifactId}</Bundle-Name>
                        <Bundle-Version>${project.version}</Bundle-Version>

                        <!-- Qualified name of the class that exposes the activator iface. -->
                        <Bundle-Activator>com.baeldung.osgi.sample.activator.HelloWorld</Bundle-Activator>

                        <!-- One important thing to note: since you are not exporting the package "com.baeldung.osgi.sample.activator", you should at least add it to the Private-Package
                            instruction. Otherwise, the classes inside the package will not be copied to your bundle, as the default value of this instruction is empty. -->

                        <Private-Package>com.baeldung.osgi.sample.activator</Private-Package>

                    </instructions>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

这是我使用的 Java 代码:

package com.baeldung.osgi.sample.activator;

import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;

public class HelloWorld implements BundleActivator {

    public void start(BundleContext ctx) {
        System.out.println("Hello World.");
    }

    public void stop(BundleContext bundleContext) {
        System.out.println("Goodbye World.");
    }

}

代码结构可以在这里找到:https://github.com/eugenp/tutorials/tree/master/osgi/osgi-intro-sample-activator

预先感谢您的帮助!

Answer 1

您应该将 bundle:install mvn:com.baeldung/osgi-intro-sample-activator/1.0-SNAPSHOT 替换为 bundle:install mvn:com.baeldung/osgi/1.0-SNAPSHOT 因为您的 artifactId 是 osgi。继续关注此链接