Question

尝试在空数据库和我的hibernate实体之间运行简单的diff时，我得到以下异常。异常似乎表明它无法获取catalognames。我正在使用myqsl DB，它目前是空的（没有表格）。我的目标是使用代码中的实体来创建更改日志。这些实体是spring-boot应用程序的一部分。

以下是liquibase属性

    referenceUrl=hibernate:spring:com.lowes.order.domain.pojos?dialect=org.hibernate.dialect.MySQL5Dialect&hibernate.physical_naming_strategy=org.springframework.boot.orm.jpa.hibernate.SpringPhysicalNamingStrategy&hibernate.implicit_naming_strategy=org.springframework.boot.orm.jpa.hibernate.SpringImplicitNamingStrategy
    referenceDriver=liquibase.ext.hibernate.database.connection.HibernateDriver
    url=jdbc:mysql://localhost:3306/test
    username=root
    password=password
    promptOnNonLocalDatabase=false
    verbose=true
    driver=com.mysql.jdbc.Driver
    outputChangeLogFile=src/main/resources/liquibase-outputChangeLog.xml
    changeLogFile=src/main/resources/liquibase-changeLog.xml
    diffChangeLogFile=src/main/resources/liquibase-diff-changeLog.xml
    defaultSchemaName=test
    referenceDefaultSchemaName=test
    defaultCatalogName=test
    referenceDefaultCatalogName=test

当我运行mvn liquibase：diff -X

时，这是个例外

java.lang.NullPointerException
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:213)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:154)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:146)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:51)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:309)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:194)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:107)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:955)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:290)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:194)
    at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:498)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:356)
Caused by: org.apache.maven.plugin.MojoExecutionException: Error setting up or running Liquibase: liquibase.command.CommandExecutionException: java.lang.NullPointerException
    at org.liquibase.maven.plugins.AbstractLiquibaseMojo.execute (AbstractLiquibaseMojo.java:398)
    at org.liquibase.maven.plugins.LiquibaseDatabaseDiff.execute (LiquibaseDatabaseDiff.java:146)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:134)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:208)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:154)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:146)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:51)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:309)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:194)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:107)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:955)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:290)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:194)
    at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:498)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:356)
Caused by: liquibase.exception.LiquibaseException: liquibase.command.CommandExecutionException: java.lang.NullPointerException
    at liquibase.integration.commandline.CommandLineUtils.doDiffToChangeLog (CommandLineUtils.java:233)
    at liquibase.integration.commandline.CommandLineUtils.doDiffToChangeLog (CommandLineUtils.java:210)
    at org.liquibase.maven.plugins.LiquibaseDatabaseDiff.performLiquibaseTask (LiquibaseDatabaseDiff.java:182)
    at org.liquibase.maven.plugins.AbstractLiquibaseMojo.execute (AbstractLiquibaseMojo.java:394)
    at org.liquibase.maven.plugins.LiquibaseDatabaseDiff.execute (LiquibaseDatabaseDiff.java:146)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:134)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:208)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:154)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:146)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:51)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:309)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:194)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:107)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:955)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:290)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:194)
    at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:498)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:356)
Caused by: liquibase.command.CommandExecutionException: java.lang.NullPointerException
    at liquibase.command.AbstractCommand.execute (AbstractCommand.java:13)
    at liquibase.integration.commandline.CommandLineUtils.doDiffToChangeLog (CommandLineUtils.java:231)
    at liquibase.integration.commandline.CommandLineUtils.doDiffToChangeLog (CommandLineUtils.java:210)
    at org.liquibase.maven.plugins.LiquibaseDatabaseDiff.performLiquibaseTask (LiquibaseDatabaseDiff.java:182)
    at org.liquibase.maven.plugins.AbstractLiquibaseMojo.execute (AbstractLiquibaseMojo.java:394)
    at org.liquibase.maven.plugins.LiquibaseDatabaseDiff.execute (LiquibaseDatabaseDiff.java:146)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:134)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:208)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:154)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:146)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:51)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:309)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:194)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:107)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:955)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:290)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:194)
    at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:498)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:356)
*Caused by: java.lang.NullPointerException
    at liquibase.snapshot.jvm.CatalogSnapshotGenerator.getDatabaseCatalogNames (CatalogSnapshotGenerator.java:82)*
    at liquibase.snapshot.jvm.CatalogSnapshotGenerator.snapshotObject (CatalogSnapshotGenerator.java:41)
    at liquibase.snapshot.jvm.JdbcSnapshotGenerator.snapshot (JdbcSnapshotGenerator.java:60)
    at liquibase.snapshot.SnapshotGeneratorChain.snapshot (SnapshotGeneratorChain.java:50)
    at liquibase.snapshot.DatabaseSnapshot.include (DatabaseSnapshot.java:246)
    at liquibase.snapshot.DatabaseSnapshot.init (DatabaseSnapshot.java:75)
    at liquibase.snapshot.DatabaseSnapshot.<init> (DatabaseSnapshot.java:53)
    at liquibase.snapshot.JdbcDatabaseSnapshot.<init> (JdbcDatabaseSnapshot.java:28)
    at liquibase.snapshot.SnapshotGeneratorFactory.createSnapshot (SnapshotGeneratorFactory.java:150)
    at liquibase.snapshot.SnapshotGeneratorFactory.createSnapshot (SnapshotGeneratorFactory.java:139)
    at liquibase.command.DiffCommand.createReferenceSnapshot (DiffCommand.java:219)
    at liquibase.command.DiffCommand.createDiffResult (DiffCommand.java:141)
    at liquibase.command.DiffToChangeLogCommand.run (DiffToChangeLogCommand.java:51)
    at liquibase.command.AbstractCommand.execute (AbstractCommand.java:8)
    at liquibase.integration.commandline.CommandLineUtils.doDiffToChangeLog (CommandLineUtils.java:231)
    at liquibase.integration.commandline.CommandLineUtils.doDiffToChangeLog (CommandLineUtils.java:210)
    at org.liquibase.maven.plugins.LiquibaseDatabaseDiff.performLiquibaseTask (LiquibaseDatabaseDiff.java:182)
    at org.liquibase.maven.plugins.AbstractLiquibaseMojo.execute (AbstractLiquibaseMojo.java:394)
    at org.liquibase.maven.plugins.LiquibaseDatabaseDiff.execute (LiquibaseDatabaseDiff.java:146)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:134)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:208)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:154)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:146)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:51)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:309)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:194)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:107)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:955)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:290)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:194)
    at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:498)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:356)

Answer 1

我和您有相同的需求，并且遇到相同的问题。 Liquibase-hibernate扩展名必须与liquibase-plugin的正确版本匹配。以下是我针对解决方案的Maven配置：

<plugin>
    <groupId>org.liquibase</groupId>
    <artifactId>liquibase-maven-plugin</artifactId>
    <version>3.5.5</version>
    <dependencies>
        <dependency>
            <groupId>org.liquibase.ext</groupId>
            <artifactId>liquibase-hibernate4</artifactId>
            <version>3.6</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>4.1.7.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-jpa</artifactId>
            <version>1.7.3.RELEASE</version>
        </dependency>
    </dependencies>
    <configuration>
        <propertyFile>${basedir}/target/classes/db/liquibase/liquibase.properties</propertyFile>
    </configuration>
</plugin>

Liquibase Hibernate diff异常

1 个答案: