NoClassDefFoundError:使用Apache ServiceMix的OsgiDefaultCamelContext
NoClassDefFoundError:使用Apache ServiceMix的OsgiDefaultCamelContext
提问于 2019-04-01 01:15:59
我创建了一个简单的包：
public class Activator implements BundleActivator {
private CamelContext camelContext;
private CsvDataFormat csv = new CsvDataFormat();
public void start(BundleContext bundleContext) throws Exception {
csv.setDelimiter('|');
csv.setQuoteDisabled(true);
camelContext = new OsgiDefaultCamelContext(bundleContext);
camelContext.addRoutes(new RouteBuilder() {
@Override
public void configure() throws Exception {
from("file://./in/csv?charset=windows-1251")
.unmarshal(csv)
.process(exchange -> {
//do smth
});
}
});
camelContext.start();
}
public void stop(BundleContext bundleContext) throws Exception {
camelContext.stop();
}
}我使用Apache ServiceMix。我安装包：
karaf@root>feature:install camel-csv
karaf@root>bundle:install -s mvn:org.apache.camel/camel-core-osgi/2.16.5但是，当我开始我的捆绑包时，我有错误：
Caused by: java.lang.NoClassDefFoundError: org/apache/camel/core/osgi/OsgiDefaultCamelContext
at ru.camel.csv.Activator.start(Activator.java:19)但是为什么呢？在karaf控制台中，我看到：
222 | Active | 50 | 2.16.5 | camel-csv
223 | Active | 50 | 1.1.0 | Apache Commons CSV
224 | Resolved | 80 | 1.0.0.SNAPSHOT | csv
228 | Active | 80 | 2.16.5 | camel-core-osgi捆绑包camel-core-osgi包含类OsgiDefaultCamelContext。为什么会出现这个错误？
我的pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<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">
<parent>
<artifactId>ru.camel</artifactId>
<groupId>ru.camel.test</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>csv</artifactId>
<dependencies>
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-core-osgi</artifactId>
<version>2.16.5</version>
</dependency>
<dependency>
<groupId>org.osgi</groupId>
<artifactId>org.osgi.core</artifactId>
<version>6.0.0</version>
</dependency>
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-csv</artifactId>
<version>2.16.5</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<inherited>true</inherited>
<groupId>org.apache.felix</groupId>
<artifactId>maven-bundle-plugin</artifactId>
<executions>
<execution>
<id>osgi-bundle</id>
<goals>
<goal>bundle</goal>
</goals>
<phase>package</phase>
<configuration>
<instructions>
<Bundle-SymbolicName>${project.artifactId}</Bundle-SymbolicName>
<Bundle-Version>${project.version}</Bundle-Version>
<Import-Package>org.apache.camel.core.osgi.OsgiDefaultCamelContext</Import-Package>
<Bundle-Activator>ru.camel.csv.Activator</Bundle-Activator>
</instructions>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>8</source>
<target>8</target>
</configuration>
</plugin>
</plugins>
</build>
</project>回答 1
Stack Overflow用户
回答已采纳
发布于 2019-04-01 16:06:14
你应该检查你的包的导入情况。
每个包都必须声明它想要导入的包(类)。您的捆绑包可能没有声明导入OsgiDefaultCamelContext所在的包。
导入在捆绑包的META-INF/MANIFEST.MF中定义。根据构建工具的不同，此文件可能会在构建过程中自动创建。否则，您必须自己编写，尽管我强烈建议使用在构建过程中自动执行此操作的工具。
在pom.xml中，将maven-bundle-plugin的Import-Package语句的配置更改为：
<Import-Package>org.apache.camel.core.osgi.*;*</Import-Package>页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/55443420
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