What causes err ' A SPI class of type lucene.codecs.Codec name 'Lucene42'

问题

Can't figure out what is causing ' A SPI class of type org.apache.lucene.codecs.Codec with name 'Lucene42' does not exist. You need to add the corresponding JAR file supporting this SPI to your classpath'

Any help would be appreciated

java.lang.IllegalArgumentException: A SPI class of type org.apache.lucene.codecs.Codec with name 'Lucene42' does not exist. You need to add the corresponding JAR file supporting this SPI to your classpath.The current classpath supports the following names: []
org.apache.lucene.util.NamedSPILoader.lookup(NamedSPILoader.java:104)
org.apache.lucene.codecs.Codec.forName(Codec.java:95)
org.apache.lucene.codecs.Codec.<clinit>(Codec.java:122)
org.apache.lucene.index.LiveIndexWriterConfig.<init>(LiveIndexWriterConfig.java:118)
org.apache.lucene.index.IndexWriterConfig.<init>(IndexWriterConfig.java:145)
com.damn.fr.rr.rent.getResukt(Man.java:404)
com.damn.fr.rr.handler.pg.setResult(pg.java:103)
com.damn.fr.rr.cmd.del.execute(del.java:19)
com.damn.fr.rr.servlet.PublicController.doPost(controller.java:199)
javax.servlet.http.HttpServlet.service(HttpServlet.java:754)
javax.servlet.http.HttpServlet.service(HttpServlet.java:847)

Jboss deployment folder path 'C:\JBAS\modules\org\apache\lucene\main' and directory contents

jboss-deployment-structure.xml

    <sub-deployment name="damn.jar">
    <dependencies>
        <module name="org.apache.commons.fileupload" />
        <module name="org.apache.commons.io" />
        <module name="org.apache.commons.lang3" />
        <module name="org.apache.commons.validator" />
        <module name="org.apache.lucene" />
        <module name="net.sf.jasperreports" />
        <module name="com.google.gson" />

    </dependencies>
</sub-deployment>

module.xml

<module xmlns="urn:jboss:module:1.0" name="org.apache.lucene">
<resources>
<resource-root path="lucene-analyzers-common-4.2.0.jar"/>
<resource-root path="lucene-core-4.2.0.jar"/>
<resource-root path="lucene-queryparser-4.2.0.jar"/>
<resource-root path="lucene-codecs-4.2.0.jar"/>
</resources>

<dependencies>
</dependencies>

ant build file segment

<pathelement path="${thirdPartyDir}/lucene-analyzers-common-4.2.0.jar" />
<pathelement path="${thirdPartyDir}/lucene-codecs-4.2.0.jar" />
<pathelement path="${thirdPartyDir}/lucene-queryparser-  4.2.0.jar" />
<pathelement path="${thirdPartyDir}/lucene-core-4.2-SNAPSHOT.jar" />

回答1:

Please add following file in

Folder : META-INF/services/

File :org.apache.lucene.codecs.Codec

Text :org.apache.lucene.codecs.lucene54.Lucene54Codec

Please review the solution with detailed description at https://anwaarlabs.wordpress.com/2017/02/25/lucene-an-spi-class-of-type-org-apache-lucene-codecs-codec-with-name-does-not-exist/

This solution is defined for Lucene5.4 it also works for Lucene 4.2. Thanks

回答2:

I find something about this. Hope there would be helpful though I use lucene 4.10.2.

The codecs are configured in 'org.apache.lucene.codecs.Codec'. I looked into 'lucene-core-4.10.2.jar' and there is such a file 'META-INF\services\org.apache.lucene.codecs.Codec'. So you can put the class name into configuration file and lucene would find it. However, you don't need extract the jar file, add it and re-package the jar. Just create a new file with the same directory structure, that is, 'META-INF\services\org.apache.lucene.codecs.Codec' into java's classpath, e.g., 'target/classes' directory, and java would find all codec configuration file and load them.

回答3:

sometimes it happens when you create an index using a version of lucene, or your index is corrupted. try deleting your entire index and re-indexing.

来源：https://stackoverflow.com/questions/29818169/what-causes-err-a-spi-class-of-type-lucene-codecs-codec-name-lucene42

标签

java

lucene

jboss7.x