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liquibase：changelogSync提供NullPointerException

[英]liquibase:changelogSync giving NullPointerException

 原文  2018-12-07 06:01:18  9   1    maven/ liquibase

问题描述

I am trying to upload the data to oracle db using changelogSync and I am getting nullpointer exception. 我正在尝试使用changelogSync将数据上传到oracle db，并且出现nullpointer异常。 My liquibase version is 3.6.2 and using maven to execute liquibase goals. 我的liquibase版本是3.6.2，使用maven执行liquibase目标。 This data I extracted from another db using generateChangeLog in xml format. 我使用xml格式的generateChangeLog从另一个数据库中提取了此数据。

Please let me know if I am doing something wrong. 如果我做错了事，请告诉我。

mvn -X clean liquibase:changelogSync -f backup_pom.xml mvn -X clean liquibase：changelogSync -f backup_pom.xml

Here is my pom: 这是我的pom： 

<project>
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.mytests.liquibase</groupId>
  <artifactId>my-liquibase</artifactId>
  <version>1</version>
  <dependencies>
          <dependency>
                  <groupId>com.oracle</groupId>
                  <artifactId>ojdbc7</artifactId>
                  <version>12.1.0.2.0</version>
          </dependency>
  </dependencies>
  <build>
    <plugins>
      <plugin>
        <groupId>org.liquibase</groupId>
        <artifactId>liquibase-maven-plugin</artifactId>
        <version>3.6.2</version>
        <configuration>
                <propertyFile>
                        C:/Users/ygupta/Tools/db/liquibase.properties
                </propertyFile>
                <promptOnNonLocalDatabase>false</promptOnNonLocalDatabase>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>

Here are the maven logs: 这是Maven日志： 

[INFO] Successfully released change log lock
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  6.784 s
[INFO] Finished at: 2018-12-07T16:35:56+11:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.liquibase:liquibase-maven-plugin:3.6.2:changelogSync (default-cli) on project my-liquibase: Execution default-cli of goal org.liquibase:liquibase-maven-plugin:3.6.2:changelogSync failed.: NullPointerException -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.liquibase:liquibase-maven-plugin:3.6.2:changelogSync (default-cli) on project my-liquibase: Execution default-cli of goal org.liquibase:liquibase-maven-plugin:3.6.2:changelogSync failed.
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:215)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)
    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:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:956)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
    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.PluginExecutionException: Execution default-cli of goal org.liquibase:liquibase-maven-plugin:3.6.2:changelogSync failed.
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:148)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:210)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)
    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:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:956)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
    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.changelog.StandardChangeLogHistoryService.init (StandardChangeLogHistoryService.java:127)
    at liquibase.Liquibase.checkLiquibaseTables (Liquibase.java:1219)
    at liquibase.Liquibase.changeLogSync (Liquibase.java:873)
    at org.liquibase.maven.plugins.LiquibaseChangeLogSyncMojo.performLiquibaseTask (LiquibaseChangeLogSyncMojo.java:19)
    at org.liquibase.maven.plugins.AbstractLiquibaseMojo.execute (AbstractLiquibaseMojo.java:366)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:210)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)
    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:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:956)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
    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)
[ERROR]
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginExecutionException

UPDATED: I was incorrectly using changelogSync, but even if I run update goal, I get same error. 更新：我不正确地使用changelogSync，但是即使我运行更新目标，也会遇到相同的错误。 I would like to emphasize that generateChangelog's output xml was not in correct xml format and had special characters. 我想强调一下，generateChangelog的输出xml格式不正确，并且具有特殊字符。 So I had to remove them manually before running any other liquibase plugin's goal. 因此，在运行任何其他liquibase插件的目标之前，我必须手动删除它们。 But after removing those special character , I get NullPointerException. 但是在删除了那些特殊字符之后，我得到了NullPointerException。 

    [INFO] Executing on Database: jdbc:oracle:thin:***/p**od@docker-ygupta.domain:1522/ORCL
INFO 10/12/18 10:13 AM:liquibase: Successfully acquired change log lock
SEVERE 10/12/18 10:13 AM:liquibase: cvc-elt.1: Cannot find the declaration of element 'databaseChangeLog'.
INFO 10/12/18 10:13 AM:liquibase: Successfully released change log lock
INFO 10/12/18 10:13 AM:liquibase: Successfully released change log lock

    [INFO] Successfully released change log lock
    [INFO] ------------------------------------------------------------------------
    [INFO] BUILD FAILURE
    [INFO] ------------------------------------------------------------------------
    [INFO] Total time:  7.635 s
    [INFO] Finished at: 2018-12-10T09:21:29+11:00
    [INFO] ------------------------------------------------------------------------
    [ERROR] Failed to execute goal org.liquibase:liquibase-maven-plugin:3.6.2:update (default-cli) on project my-liquibase: Execution default-cli of goal org.liquibase:liquibase-maven-plugin:3.6.2:update failed.: NullPointerException -> [Help 1]
    org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.liquibase:liquibase-maven-plugin:3.6.2:update (default-cli) onproject my-liquibase: Execution default-cli of goal org.liquibase:liquibase-maven-plugin:3.6.2:update failed.
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:215)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)
        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:56)
        at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
        at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
        at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
        at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
        at org.apache.maven.cli.MavenCli.execute (MavenCli.java:956)
        at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288)
        at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
        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.PluginExecutionException: Execution default-cli of goal org.liquibase:liquibase-maven-plugin:3.6.2:update failed.
        at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:148)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:210)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)
        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:56)
        at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
        at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
        at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
        at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
        at org.apache.maven.cli.MavenCli.execute (MavenCli.java:956)
        at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288)
        at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
        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.changelog.StandardChangeLogHistoryService.init (StandardChangeLogHistoryService.java:127)
        at liquibase.Liquibase.checkLiquibaseTables (Liquibase.java:1219)
        at liquibase.Liquibase.update (Liquibase.java:193)
        at liquibase.Liquibase.update (Liquibase.java:179)
        at liquibase.Liquibase.update (Liquibase.java:334)
        at org.liquibase.maven.plugins.LiquibaseUpdate.doUpdate (LiquibaseUpdate.java:33)
        at org.liquibase.maven.plugins.AbstractLiquibaseUpdateMojo.performLiquibaseTask (AbstractLiquibaseUpdateMojo.java:30)
        at org.liquibase.maven.plugins.AbstractLiquibaseMojo.execute (AbstractLiquibaseMojo.java:366)
        at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:210)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)
        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:56)
        at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
        at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
        at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
        at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
        at org.apache.maven.cli.MavenCli.execute (MavenCli.java:956)
        at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288)
        at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
        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)
    [ERROR]
    [ERROR]
    [ERROR] For more information about the errors and possible solutions, please read the following articles:
    [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginExecutionException

1 个解决方案

解决方案1
 0  2018-12-07 15:20:37

The first mistake is that the changelogSync command will not upload data to the database. 第一个错误是changelogSync命令不会将数据上传到数据库。 That command is intended to be used when you have made changes to a database some other way (using Oracle SQL developer or SQL Server Management studio or something like that) and you have corresponding changes in your changelog.xml, and you want to make sure that the DATABASECHANGELOG table reflects that the two are in sync. 当您以其他方式对数据库进行了更改（使用Oracle SQL Developer或SQL Server Management Studio或类似的方式）并且您在changelog.xml中进行了相应的更改时，该命令应用于该命令，并且您要确保DATABASECHANGELOG表反映出两者是同步的。

If you have something in a changelog.xml that you want deployed to a database, you would use the liquibase update command. 如果changelog.xml中有要部署到数据库的内容，则可以使用liquibase update命令。

That said, I am not sure why you are getting that Null Pointer Exception. 也就是说，我不确定为什么会收到Null Pointer Exception。 The line of code in question has several places it could generate that. 有问题的代码行可能会在多个位置生成该代码。 It could be that the DATABASECHANGELOG table doesn't exist at all, or that it exists but doesn't have the correct columns. 可能是DATABASECHANGELOG表根本不存在，或者存在但没有正确的列。

https://github.com/liquibase/liquibase/blob/8ee4607c7a0c99c5de9538c0ca850473b300576e/liquibase-core/src/main/java/liquibase/changelog/StandardChangeLogHistoryService.java#L127 https://github.com/liquibase/liquibase/blob/8ee4607c7a0c99c5de9538c0ca850473b300576e/liquibase-core/src/main/java/liquibase/changelog/StandardChangeLogHistoryService.java#L127 

    if (!(this.getDatabase() instanceof SQLiteDatabase)) {
        DataType type = changeLogTable.getColumn("LIQUIBASE").getType();
        if (type.getTypeName().toLowerCase().startsWith("varchar")) {
            Integer columnSize = type.getColumnSize();
            liquibaseColumnNotRightSize = (columnSize != null) && (columnSize < 20);
        } else {
            liquibaseColumnNotRightSize = false;
        }
    }

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