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assembly:assembly

以前、こちらの記事で実行可能なjarファイルの作り方を書きましたが、今回Springを利用した場合にちょっとハマったので回避方法をメモしておきます。

上記の記事を参考に、実行可能ではないjarを作成して、以下のコマンドを実行しました。

java -cp hoge.jar hoge.Fuga

すると、以下のようなエラーログが出力されます。

Exception in thread "main" org.springframework.beans.factory.xml.XmlBeanDefinitionStoreException:
Line 12 in XML document from class path resource [applicationContext.xml] is invalid;
nested exception is org.xml.sax.SAXParseException:
 cvc-elt.1: Cannot find the declaration of element 'beans'.

簡単に言うとapplicationContext.xmlの読み込みに失敗した感じです。で、スタックトレースを参考にjarを展開してMETA-INFを見てみるとspring.schemasの中身がtxの分しか存在しません。beanとかcontextの分も本来はあるはずですが、ファイル名が同じなのでどうやら上書きされてしまったようです。
本家のフォーラムを見ると同じような現象で困っている人がちょいちょいいましたが、解決策としては「自分でassemblyの設定ファイルを書いて、unpackOptionのexcludeにspring.handlersとspring.scemasを指定して、自分でその2つ作って中身は好きなように集めてきてね(はぁと)」(超意訳)とのことなので、pom.xmlの修正とassembly設定ファイルを作成します。

まずpom.xmlですが、pluginのconfiguration要素にdescriptorRefsではなく、assembly設定ファイルを指定します。こんな感じ。

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-assembly-plugin</artifactId>
    <configuration>
        <descriptor>src/main/assembly/spring-jar-with-dependencies.xml</descriptor>
        <finalName>hoge</finalName>
        <appendAssemblyId>false</appendAssemblyId>
    </configuration>
    <executions>
        <execution>
            <id>make-assembly</id>
            <phase>package</phase>
            <goals>
                <goal>attached</goal>
            </goals>
        </execution>
    </executions>
</plugin>

次にassembly設定ファイル、ここではspring-jar-with-dependencies.xmlをsrc/main/assemblyに作成します。

<assembly
    xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.0 http://maven.apache.org/xsd/assembly-1.1.0.xsd">
    <!-- TODO: a jarjar format would be better -->
    <id>pack-jar-with-dependencies</id>
    <formats>
        <format>jar</format>
    </formats>
    <includeBaseDirectory>false</includeBaseDirectory>
    <fileSets>
        <fileSet>
            <directory>target/classes</directory>
            <outputDirectory>/</outputDirectory>
            <excludes>
                <exclude>**/*.jar</exclude>
            </excludes>
        </fileSet>
    </fileSets>
    <dependencySets>
        <dependencySet>
            <outputDirectory>/</outputDirectory>
            <useProjectArtifact>true</useProjectArtifact>
            <unpack>true</unpack>
            <unpackOptions>
                <excludes>
                    <exclude>META-INF/spring.handlers</exclude>
                    <exclude>META-INF/spring.schemas</exclude>
                </excludes>
            </unpackOptions>
            <scope>runtime</scope>
        </dependencySet>
    </dependencySets>
</assembly>

で、最後にsrc/main/resourcesにMETA-INFを作成して、spring.handlersとspring.schemasを作成します。まずはspring.handlersから。

http\://www.springframework.org/schema/tx=org.springframework.transaction.config.TxNamespaceHandler
http\://www.springframework.org/schema/aop=org.springframework.aop.config.AopNamespaceHandler
http\://www.springframework.org/schema/p=org.springframework.beans.factory.xml.SimplePropertyNamespaceHandler
http\://www.springframework.org/schema/util=org.springframework.beans.factory.xml.UtilNamespaceHandler
http\://www.springframework.org/schema/context=org.springframework.context.config.ContextNamespaceHandler
http\://www.springframework.org/schema/jee=org.springframework.ejb.config.JeeNamespaceHandler
http\://www.springframework.org/schema/lang=org.springframework.scripting.config.LangNamespaceHandler
http\://www.springframework.org/schema/task=org.springframework.scheduling.config.TaskNamespaceHandler
http\://www.springframework.org/schema/jdbc=org.springframework.jdbc.config.JdbcNamespaceHandler

次にspring.schemas。

http\://www.springframework.org/schema/tx/spring-tx-2.0.xsd=org/springframework/transaction/config/spring-tx-2.0.xsd
ttp\://www.springframework.org/schema/tx/spring-tx-2.5.xsd=org/springframework/transaction/config/spring-tx-2.5.xsd
http\://www.springframework.org/schema/tx/spring-tx-3.0.xsd=org/springframework/transaction/config/spring-tx-3.0.xsd
http\://www.springframework.org/schema/tx/spring-tx.xsd=org/springframework/transaction/config/spring-tx-3.0.xsd
http\://www.springframework.org/schema/aop/spring-aop-2.0.xsd=org/springframework/aop/config/spring-aop-2.0.xsd
http\://www.springframework.org/schema/aop/spring-aop-2.5.xsd=org/springframework/aop/config/spring-aop-2.5.xsd
http\://www.springframework.org/schema/aop/spring-aop-3.0.xsd=org/springframework/aop/config/spring-aop-3.0.xsd
http\://www.springframework.org/schema/aop/spring-aop.xsd=org/springframework/aop/config/spring-aop-3.0.xsd
http\://www.springframework.org/schema/beans/spring-beans-2.0.xsd=org/springframework/beans/factory/xml/spring-beans-2.0.xsd
http\://www.springframework.org/schema/beans/spring-beans-2.5.xsd=org/springframework/beans/factory/xml/spring-beans-2.5.xsd
http\://www.springframework.org/schema/beans/spring-beans-3.0.xsd=org/springframework/beans/factory/xml/spring-beans-3.0.xsd
http\://www.springframework.org/schema/beans/spring-beans.xsd=org/springframework/beans/factory/xml/spring-beans-3.0.xsd
http\://www.springframework.org/schema/tool/spring-tool-2.0.xsd=org/springframework/beans/factory/xml/spring-tool-2.0.xsd
http\://www.springframework.org/schema/tool/spring-tool-2.5.xsd=org/springframework/beans/factory/xml/spring-tool-2.5.xsd
http\://www.springframework.org/schema/tool/spring-tool-3.0.xsd=org/springframework/beans/factory/xml/spring-tool-3.0.xsd
http\://www.springframework.org/schema/tool/spring-tool.xsd=org/springframework/beans/factory/xml/spring-tool-3.0.xsd
http\://www.springframework.org/schema/util/spring-util-2.0.xsd=org/springframework/beans/factory/xml/spring-util-2.0.xsd
http\://www.springframework.org/schema/util/spring-util-2.5.xsd=org/springframework/beans/factory/xml/spring-util-2.5.xsd
http\://www.springframework.org/schema/util/spring-util-3.0.xsd=org/springframework/beans/factory/xml/spring-util-3.0.xsd
http\://www.springframework.org/schema/util/spring-util.xsd=org/springframework/beans/factory/xml/spring-util-3.0.xsd
http\://www.springframework.org/schema/context/spring-context-2.5.xsd=org/springframework/context/config/spring-context-2.5.xsd
http\://www.springframework.org/schema/context/spring-context-3.0.xsd=org/springframework/context/config/spring-context-3.0.xsd
http\://www.springframework.org/schema/context/spring-context.xsd=org/springframework/context/config/spring-context-3.0.xsd
http\://www.springframework.org/schema/jee/spring-jee-2.0.xsd=org/springframework/ejb/config/spring-jee-2.0.xsd
http\://www.springframework.org/schema/jee/spring-jee-2.5.xsd=org/springframework/ejb/config/spring-jee-2.5.xsd
http\://www.springframework.org/schema/jee/spring-jee-3.0.xsd=org/springframework/ejb/config/spring-jee-3.0.xsd
http\://www.springframework.org/schema/jee/spring-jee.xsd=org/springframework/ejb/config/spring-jee-3.0.xsd
http\://www.springframework.org/schema/lang/spring-lang-2.0.xsd=org/springframework/scripting/config/spring-lang-2.0.xsd
http\://www.springframework.org/schema/lang/spring-lang-2.5.xsd=org/springframework/scripting/config/spring-lang-2.5.xsd
http\://www.springframework.org/schema/lang/spring-lang-3.0.xsd=org/springframework/scripting/config/spring-lang-3.0.xsd
http\://www.springframework.org/schema/lang/spring-lang.xsd=org/springframework/scripting/config/spring-lang-3.0.xsd
http\://www.springframework.org/schema/task/spring-task-3.0.xsd=org/springframework/scheduling/config/spring-task-3.0.xsd
http\://www.springframework.org/schema/task/spring-task.xsd=org/springframework/scheduling/config/spring-task-3.0.xsd
http\://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd=org/springframework/jdbc/config/spring-jdbc-3.0.xsd
http\://www.springframework.org/schema/jdbc/spring-jdbc.xsd=org/springframework/jdbc/config/spring-jdbc-3.0.xsd

各jarのspring.handlersとspring.schemasを掻き集めてきただけです。

この状態でもう一度jarを作成して実行すると、今度は正常に動作しました。