Maven SCR 插件 - 不生成 OSGI-INF 文件夹

Question

我一直无法让我的 SCR 插件正常工作。我已经尽可能多地搜索，只找到与我需要使用的结构不相似的示例。下面是 POM 的片段。这些几乎是 CQ 项目原型(prototype)生成的默认值。所有依赖项都在那里，所以可能不是这样。这是构建的输出:

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
[INFO] Scanning for projects...
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building project Bundle 1.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ project-bundle ---
[INFO] Deleting C:\project-path\target
[INFO] 
[INFO] --- maven-resources-plugin:2.5:resources (default-resources) @ bundle ---
[debug] execute contextualize
[WARNING] Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory C:\project-path\src\main\resources
[INFO] 
[INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ project-bundle ---
[WARNING] File encoding has not been set, using platform encoding Cp1252, i.e. build is platform dependent!
[INFO] Compiling 4 source files to C:\project-path\target\classes
[INFO] 
[INFO] --- maven-scr-plugin:1.7.4:scr (generate-scr-descriptor) @ project-bundle ---
[INFO] 
[INFO] --- maven-resources-plugin:2.5:testResources (default-testResources) @ project-bundle ---
[debug] execute contextualize
[WARNING] Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory C:\project-path\src\test\resources
[INFO] 
[INFO] --- maven-compiler-plugin:2.3.2:testCompile (default-testCompile) @ project-bundle ---
[INFO] No sources to compile
[INFO] 
[INFO] --- maven-surefire-plugin:9c6abc2:test (default-test) @ project-bundle ---
[INFO] No tests to run.
[INFO] 
[INFO] --- maven-bundle-plugin:2.3.6:bundle (default-bundle) @ project-bundle ---
[INFO] 
[INFO] --- maven-install-plugin:2.4:install (default-install) @ project-bundle ---
[INFO] Installing C:\project-path\target\project-bundle-1.0-SNAPSHOT.jar to C:\user-path\.m2\repository\com\project\cq\project-bundle\1.0-SNAPSHOT\project-bundle-1.0-SNAPSHOT.jar
[INFO] Installing C:\project-path\pom.xml to C:\user-path\.m2\repository\com\project\cq\project-bundle\1.0-SNAPSHOT\project-bundle-1.0-SNAPSHOT.pom
[INFO] 
[INFO] --- maven-bundle-plugin:2.3.6:install (default-install) @ project-bundle ---
[INFO] Installing com/project/cq/project-bundle/1.0-SNAPSHOT/project-bundle-1.0-SNAPSHOT.jar
[INFO] Writing OBR metadata
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 4.189s
[INFO] Finished at: Wed Apr 17 10:29:17 CDT 2013
[INFO] Final Memory: 15M/221M
[INFO] ------------------------------------------------------------------------

输出的关键部分是 [INFO] --- maven-scr-plugin:1.7.4:scr (generate-scr-descriptor) @ project-bundle --- .即使类上存在注释，它似乎也没有生成任何东西。

父 POM 片段:

<build>
    <pluginManagement>
        <plugins>
            <plugin>
                <groupId>org.apache.felix</groupId>
                <artifactId>maven-scr-plugin</artifactId>
                <version>1.7.4</version>
            </plugin>
            <plugin>
                <groupId>org.apache.felix</groupId>
                <artifactId>maven-bundle-plugin</artifactId>
                <version>2.3.6</version>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <!-- use version 2.3.2 to have java 1.5 as the default -->
                <configuration>
                    <source>${java.version}</source>
                    <target>${java.version}</target>
                </configuration>
                <version>2.3.2</version>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-resources-plugin</artifactId>
                <version>2.5</version>
            </plugin>
            <plugin>
                <groupId>org.apache.sling</groupId>
                <artifactId>maven-sling-plugin</artifactId>
                <version>2.0.6</version>
            </plugin>
            <plugin>
                <groupId>com.day.jcr.vault</groupId>
                <artifactId>content-package-maven-plugin</artifactId>
                <version>0.0.13</version>
            </plugin>
            <!--This plugin's configuration is used to store Eclipse m2e settings only. It has no influence on the 
                Maven build itself. -->
            <plugin>
                <groupId>org.eclipse.m2e</groupId>
                <artifactId>lifecycle-mapping</artifactId>
                <version>1.0.0</version>
                <configuration>
                    <lifecycleMappingMetadata>
                        <pluginExecutions>
                            <pluginExecution>
                                <pluginExecutionFilter>
                                    <groupId>org.apache.felix</groupId>
                                    <artifactId>maven-scr-plugin</artifactId>
                                    <versionRange>[1.7.4,)</versionRange>
                                    <goals>
                                        <goal>scr</goal>
                                    </goals>
                                </pluginExecutionFilter>
                                <action>
                                    <ignore />
                                </action>
                            </pluginExecution>
                        </pluginExecutions>
                    </lifecycleMappingMetadata>
                </configuration>
            </plugin>
        </plugins>
    </pluginManagement>
</build>

子 POM 片段:

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.felix</groupId>
            <artifactId>maven-scr-plugin</artifactId>
            <extensions>true</extensions>
            <executions>
                <execution>
                    <id>generate-scr-descriptor</id>
                    <goals>
                        <goal>scr</goal>
                    </goals>
                </execution>
            </executions>
       </plugin>
       <plugin>
            <groupId>org.apache.felix</groupId>
            <artifactId>maven-bundle-plugin</artifactId>
            <extensions>true</extensions>
            <configuration>
                <instructions>
                    <Bundle-SymbolicName>project.project-bundle</Bundle-SymbolicName>
                </instructions>
            </configuration>
        </plugin>
        <plugin>
            <groupId>org.apache.sling</groupId>
            <artifactId>maven-sling-plugin</artifactId>
            <configuration>
                <slingUrl>http://${crx.host}:${crx.port}/apps/project/install</slingUrl>
                <usePut>true</usePut>
            </configuration>
        </plugin>
    </plugins>
</build>

正在构建的代码:

package com.project.cq.examples.dictionaryservice.impl;

import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Properties;
import org.apache.felix.scr.annotations.Property;
import org.apache.felix.scr.annotations.Service;
import org.osgi.service.component.ComponentContext;

import com.project.cq.examples.dictionaryservice.DictionaryService;

@Component(immediate = true, metatype = true, label = "Service Implementation", description = "The implementation for the Service")
@Service
public class DictionaryServiceServletImpl implements DictionaryService {

    @Property(label = "Words", description = "The list of words.")
    private static final String PROP_WORDS = "words";

    // The set of words
    private String[] words;
    private boolean active;
    private boolean modified;

    @Override
    public boolean checkWord(String word) {
        word = word.toLowerCase();

        // This is very inefficient
        for (int i = 0; i < words.length; i++) {
            if (words[i].equals(word)) {
                return false;
            }
        }
        return true;
    }

    protected void activate(ComponentContext context) {
        active = true;
        dictionary = (String[]) context.getProperties().get(
                PROP_WORDS);
    }

    protected void deactivate(ComponentContext context) {
        dictionary = null;
        active = false;
    }

    protected void modified(ComponentContext context) {
        modified = true;
        dictionary = (String[]) context.getProperties().get(
                PROP_WORDS);
    }
}

任何帮助是极大的赞赏。

Answer 1

我猜你正在使用 <packaging>bundle</packaging> ，如果是这样，我通过使用 org.apache.felix.scr.annotations @ 1.7.0 将 maven-scr-plugin 升级到 1.9.0 来完成这项工作

我在这里放了一个工作版本的压缩包:https://dl.dropboxusercontent.com/u/2465717/com.stackoverflow.osgi.scr.tgz

注意:您可以启用 Eclipse m2e 生命周期映射 - 它运行良好(Juno SR2)，在正常的问题控制台中生成 SCR 组件错误。更改action <ignore/>到:

<action>
        <execute>
                <runOnIncremental>true</runOnIncremental>
                <runOnConfiguration>true</runOnConfiguration>
        </execute>
</action>

此外，虽然规范表明 SCR 运行时将搜索重载的 de/activate 方法 - 作为个人偏好，我会在各自的方法上使用 @Activate、@Deactive 和 @Modified 以明确意图(在代码和生成的 XML 中)。但各有各的。