如何从OSGi组件中的第三方jar文件导入类 [英] How to import a class from third party jar file in an OSGi component

问题描述

我正在使用 https://eclipse.adobe.com/aem/dev-tools /创建一个项目.创建后，我在Eclipse中具有以下结构:

I am using https://eclipse.adobe.com/aem/dev-tools/ to create a project. Once created, I have the following structure in eclipse:

我希望能够在我的组件中使用GoogleMaps API.所以我在hometest.core/pom.xml

I want to be able to use the GoogleMaps API in my component. So I add the dependency for it in hometest.core/pom.xml

<dependency>
    <groupId>com.google.maps</groupId>
    <artifactId>google-maps-services</artifactId>
    <version>0.1.7</version>
    <scope>compile</scope>
</dependency>

我还已将所有内容添加到hometest.core/pom.xml

I've also added everything to the _exportcontents in hometest.core/pom.xml

        <plugin>
            <groupId>org.apache.felix</groupId>
            <artifactId>maven-bundle-plugin</artifactId>
            <extensions>true</extensions>
            <configuration>
                <instructions>
                    <Embed-Dependency>*;scope=compile|runtime</Embed-Dependency>
                    <Embed-Directory>OSGI-INF/lib</Embed-Directory>
                    <_exportcontents>
                                    *
                    </_exportcontents>
                </instructions>
            </configuration>
        </plugin>

然后我将com.google.maps.model.GeocodingResult导入到HelloServiceProxy.java中，如下所示:

I then import com.google.maps.model.GeocodingResult into HelloServiceProxy.java as shown below:

我使用mvn clean install -PautoInstallPackage

但是，当我尝试将组件添加到页面时，出现以下错误:

However, when I try to add the component to the page I get the following error:

java.lang.Error:未解决的编译问题:只能是一个类型 进口的. com.google.maps.model.GeocodingResult解析为包

java.lang.Error: Unresolved compilation problem: Only a type can be imported. com.google.maps.model.GeocodingResult resolves to a package

下面是错误的屏幕截图:

Below is screenshot of the error:

更新1

我从另一个全新的AEM项目开始，做了以下事情:

I started with another brand new AEM project and did the following things:

• 在core/pom.xml中为maven-bundle-plugin添加了这样的配置设置

• in core/pom.xml added configuration settings for maven-bundle-plugin like this

    <plugin>
        <groupId>org.apache.felix</groupId>
        <artifactId>maven-bundle-plugin</artifactId>
        <extensions>true</extensions>
        <configuration>
            <instructions>
        <Embed-Dependency>*;scope=compile|runtime</Embed-Dependency>
        <Embed-Directory>OSGI-INF/lib</Embed-Directory>
        <_exportcontents>
         *
        </_exportcontents>
        </instructions>
        </configuration>
    </plugin>

像这样添加了google maps依赖项:

Added google maps dependency like this:

<dependency>
<groupId>com.google.maps</groupId>
<artifactId>google-maps-services</artifactId>
<version>0.1.7</version>
<scope>compile</scope>
</dependency>

部署了此mvn clean install -PautoInstallPackage

当我尝试将组件添加到页面时，出现错误:

When I try to add component to the page I get errors:

java.lang.Error: Unresolved compilation problems: 
    Only a type can be imported. com.google.maps.model.GeocodingResult resolves to a package
    Only a type can be imported. org.demo.anothertest.core.HelloService resolves to a package
    HelloService cannot be resolved to a type
    HelloService cannot be resolved to a type

推荐答案

该错误表明google-maps-services捆绑包中的类不适用于hometest.core捆绑包.很有可能嵌入包此时无法正常工作.

The error indicates that the classes from google-maps-services bundle are not available to the hometest.core bundle. It might very well be that embedding bundles does not work at this point.

您可以尝试部署嵌入google-maps-services的单独捆绑软件，看看是否可行吗?

Can you try deploying a separate bundle which embeds google-maps-services and see if that works?

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