JAR 文件中的 Lucene 6 错误（无法实例化 SPI class）

Question

我正在尝试运行我的 Java Maven 项目到 JAR 文件中。它运行在 IntelliJ IDEA 2017 上运行，但是，当运行通过 JAR 文件连接它时它不会运行。显示以下错误：

Exception in thread "main" java.util.ServiceConfigurationError: Cannot instantiate SPI class: org.apache.lucene.codecs.lucene62.Lucene62Codec
    at org.apache.lucene.util.NamedSPILoader.reload(NamedSPILoader.java:82)
    at org.apache.lucene.util.NamedSPILoader.<init>(NamedSPILoader.java:51)
    at org.apache.lucene.util.NamedSPILoader.<init>(NamedSPILoader.java:38)
    at org.apache.lucene.codecs.Codec$Holder.<clinit>(Codec.java:47)
    at org.apache.lucene.codecs.Codec.getDefault(Codec.java:143)
    at org.apache.lucene.index.LiveIndexWriterConfig.<init>(LiveIndexWriterConfig.java:121)
    at org.apache.lucene.index.IndexWriterConfig.<init>(IndexWriterConfig.java:151)
    at com.hrforecast.skillextraction.LuceneIndexManager.buildLuceneIndex(LuceneIndexManager.java:54)
    at com.hrforecast.skillextraction.SkillExtractionModule.getJobsSearcher(SkillExtractionModule.java:129)
    at com.hrforecast.skillextraction.SkillExtractionModule.run(SkillExtractionModule.java:60)
    at com.hrforecast.skillextraction.Main.main(Main.java:28)
Caused by: java.lang.IllegalArgumentException: An SPI class of type org.apache.lucene.codecs.PostingsFormat with name 'Lucene50' does not exist.  You need to add the corresponding JAR file supporting this SPI to your classpath.
  The current classpath supports the following names: [IDVersion]
    at org.apache.lucene.util.NamedSPILoader.lookup(NamedSPILoader.java:116)
    at org.apache.lucene.codecs.PostingsFormat.forName(PostingsFormat.java:112)
    at org.apache.lucene.codecs.lucene62.Lucene62Codec.<init>(Lucene62Codec.java:167)
    at org.apache.lucene.codecs.lucene62.Lucene62Codec.<init>(Lucene62Codec.java:82)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at java.lang.Class.newInstance(Unknown Source)
    at org.apache.lucene.util.NamedSPILoader.reload(NamedSPILoader.java:72)
    ... 10 more

我在其他 Whosebug 问题中看到了类似的问题，例如 What causes err ' A SPI class of type lucene.codecs.Codec name 'Lucene42' 但这也没有解决我的问题。

我的 pom.xml 在下面。如您所见，我也尝试使用 Resource Transformers，但没有任何改变。

<?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">
<modelVersion>4.0.0</modelVersion>

...
<dependencies>

    <!-- Spring framework -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>
        <version>3.2.2.RELEASE</version>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>3.2.2.RELEASE</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.mongodb/mongo-java-driver -->
    <dependency>
        <groupId>org.mongodb</groupId>
        <artifactId>mongo-java-driver</artifactId>
        <version>3.5.0</version>
    </dependency>


    <!-- Spring data mongodb -->
    <dependency>
        <groupId>org.springframework.data</groupId>
        <artifactId>spring-data-mongodb</artifactId>
        <version>1.2.0.RELEASE</version>
    </dependency>

    <dependency>
        <groupId>cglib</groupId>
        <artifactId>cglib</artifactId>
        <version>2.2.2</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.apache.lucene/lucene-core -->
    <dependency>
        <groupId>org.apache.lucene</groupId>
        <artifactId>lucene-core</artifactId>
        <version>6.6.0</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.apache.lucene/lucene-analyzers-common -->
    <dependency>
        <groupId>org.apache.lucene</groupId>
        <artifactId>lucene-analyzers-common</artifactId>
        <version>6.6.0</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/junit/junit -->
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.12</version>
        <scope>test</scope>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.apache.lucene/lucene-queryparser -->
    <dependency>
        <groupId>org.apache.lucene</groupId>
        <artifactId>lucene-queryparser</artifactId>
        <version>6.6.0</version>
    </dependency>

    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>1.7.5</version>
    </dependency>

    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-log4j12</artifactId>
        <version>1.7.5</version>
    </dependency>

    <dependency>
        <groupId>de.flapdoodle.embed</groupId>
        <artifactId>de.flapdoodle.embed.mongo</artifactId>
        <version>1.26</version>
        <scope>test</scope>
    </dependency>

</dependencies>

<build>
    <plugins>
        <!--<plugin>-->
            <!--<artifactId>maven-compiler-plugin</artifactId>-->
            <!--<version>3.0</version>-->
            <!--<configuration>-->
                <!--<source>1.6</source>-->
                <!--<target>1.6</target>-->
            <!--</configuration>-->
        <!--</plugin>-->
        <!--<plugin>-->
            <!--<groupId>org.apache.maven.plugins</groupId>-->
            <!--<artifactId>maven-eclipse-plugin</artifactId>-->
            <!--<version>2.9</version>-->
            <!--<configuration>-->
                <!--<downloadSources>true</downloadSources>-->
                <!--<downloadJavadocs>true</downloadJavadocs>-->
            <!--</configuration>-->
        <!--</plugin>-->
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-shade-plugin</artifactId>
            <version>2.4.3</version>
            <executions>
                <execution>
                    <phase>package</phase>
                    <goals>
                        <goal>shade</goal>
                    </goals>
                    <configuration>
                        <transformers>
                            <transformer
                                    implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                                <mainClass>com..Main</mainClass>
                            </transformer>
                            <transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
                        </transformers>
                    </configuration>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>

如有任何帮助或指导，我们将不胜感激。

Answer 1

我的解决方案是使用 Maven Shade plugin，因为我使用的是 IntelliJ，问题在于我如何创建 JAR 文件。

我没有使用 'artifacts' Build in IntelliJ 创建它，而是使用终端中的 'mvn' 工具创建了 JAR 文件。确保您的 JAVA_HOME 设置正确。我不得不再次使用 apt-get 安装 openjdk8。最后，在目标目录中创建了正确的 JAR 文件。

有关如何使用 Maven Shade 创建 JAR 文件的更多详细信息，请参阅 here。

（此解决方案适用于 Lucene 6.6.0，Windows 10 bash）。

JAR 文件中的 Lucene 6 错误（无法实例化 SPI class）

Lucene 6 error (cannot instantiate SPI class) in JAR file

java

apache

maven

lucene

maven-shade-plugin