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我正在尝试创建一个可通过 OSGi 控制台配置的 Java 类。我听说你可以通过 SCR 注释来做到这一点，但不完全确定如何。我已经掌握了大部分内容，但不确定要获取和发布什么以及如何在 JSP 中引用它。这是我到目前为止所拥有的：

import org.apache.felix.scr.annotations.Properties;
import org.apache.felix.scr.annotations.Property;
import org.apache.felix.scr.annotations.sling.SlingServlet;
import org.apache.sling.api.SlingHttpServletRequest;
import org.apache.sling.api.SlingHttpServletResponse;
import org.apache.sling.api.servlets.SlingAllMethodsServlet;

import javax.servlet.ServletException;
import java.io.IOException;

@SlingServlet(
paths={"/somepath/"}
)
@Properties({
@Property(name="email.add", value="Email Info",propertyPrivate=false),
@Property(name="user.info",value="User Info", propertyPrivate=false)
})
public class WelcomeMessage extends SlingAllMethodsServlet
{
@Override
protected void doGet(SlingHttpServletRequest request, SlingHttpServletResponse                                 response) throws ServletException, IOException
{
    //Do something here
}

@Override
protected void doPost(SlingHttpServletRequest request, SlingHttpServletResponse response) throws ServletException, IOException
{
    //Do something here
}
}
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1 回答 1

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为了能够处理此类注释，您需要设置 Maven SCR 插件（来自 Apache Felix）。该插件将处理注释并在生成的 JAR 文件中创建元数据。

@SlingServlet 注释是特定于 Apache Sling 的，并且需要某些 Apache Sling 包才能注册 servlet。@SlingServlet 注释也由 Maven SCR 插件处理。

这是一个关于如何在 Maven 中配置 SCR 插件的示例。

<build>
  <plugins>
    <plugin>
      <groupId>org.apache.felix</groupId>
      <artifactId>maven-scr-plugin</artifactId>
      <version>1.9.0</version>
      <executions>
        <execution>
          <id>generate-scr-scrdescriptor</id>
          <goals>
            <goal>scr</goal>
          </goals>
        </execution>
      </executions>
    </plugin>
  </plugins>
</build>

Also, to be able to create an OSGi bundle (Jar with OSGi metadata), you will need to setup the Maven Bundle Plugin.

You can find a brief documentation on the Maven SCR Plugin here: http://felix.apache.org/documentation/subprojects/apache-felix-maven-scr-plugin.html.

Maven Bundle plugin documentation is here: http://felix.apache.org/site/apache-felix-maven-bundle-plugin-bnd.html.

But, the best way to understand this is by looking at examples in the Sling bundles here: https://github.com/apache/sling/tree/trunk/bundles.

于 2013-04-01T22:33:28.953 回答