Maven + Spring + Hibernate：hibernate3-maven-plugin hbm2ddl由于原因失败“由......引发：java.lang.NullPointerException” [英] Maven + Spring + Hibernate: hibernate3-maven-plugin hbm2ddl fails for reason "Caused by: java.lang.NullPointerException"

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问题描述

由于目前在Spring中缺少对Hibernate 4的支持，所以我不得不将Hibernate从版本4降级到版本3（具体的3.3.2.GA），现在，当它试图生成模式时，该项目无法构建与hbm2ddl。这个错误太模糊了，而且谷歌并没有多少收获。



这是我的pom.xml：

 <？xml version =1.0encoding =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的.xsd> 
< modelVersion> 4.0.0< / modelVersion> 
 
< groupId> com.example< / groupId> 
< artifactId>示例< / artifactId> 
< version> 1.0-SNAPSHOT< / version> 
< name> Spring + Hibernate示例< / name> 
<包装> jar< / packaging> 
 
<属性> 
< project.build.sourceEncoding> UTF-8< /project.build.sourceEncoding> 
< spring.version> 3.1.2.RELEASE< /spring.version> 
< hibernate.version> 3.3.2.GA< /hibernate.version> 
< java.version> 1.6< /java.version> 
< / properties> 
 
< build> 
< extensions> 
< extension> 
< groupId> org.hsqldb< / groupId> 
< artifactId> hsqldb< / artifactId> 
< version> 2.0.0< / version> 
< / extension> 
< extension> 
< groupId> log4j< / groupId> 
< artifactId> log4j< / artifactId> 
< version> 1.2.17< / version> 
< / extension> 
< / extensions> 
< plugins> 
< plugin> 
< groupId> org.apache.maven.plugins< / groupId> 
< artifactId> maven-compiler-plugin< / artifactId> 
< version> 2.0.2< / version> 
<配置> 
< source> $ {java.version}< / source> 
< target> $ {java.version}< / target> 
< / configuration> 
< / plugin> 
< plugin> 
 <！ - 运行mvn hibernate3：hbm2ddl生成模式 - > 
< groupId> org.codehaus.mojo< / groupId> 
< artifactId> hibernate3-maven-plugin< / artifactId> 
< version> 3.0< / version> 
 
< executions> 
<执行> 
< id> generate-ddl< / id> 
<阶段>程序类< /阶段> 
<目标> 
< goal> hbm2ddl< / goal> 
< /目标> 
< /执行> 
< /执行次数> 
 
<配置> 
 < annotationConfiguration configurationfile =hibernate.cfg.xml/> 
 
< hbm2ddl export =falsecreate =trueupdate =true
 format =formatoutputfilename =schemaDiff.ddl/> 
 
< / hibernatetool> 
< / configuration> 
 
< / plugin> 
< / plugins> 
< / build> 
 
<依赖关系> 
<！ - 控制反转：Spring依赖关系 - > 
< dependency> 
< groupId> org.springframework< / groupId> 
< artifactId> spring-context< / artifactId> 
< version> $ {spring.version}< / version> 
<排除项> 
<！ - 排除有问题的commons-logging  - > 
<排除> 
< groupId> commons-logging< / groupId> 
< artifactId> commons-logging< / artifactId> 
< /排除> 
< /排除> 
< /依赖关系> 
< dependency> 
< groupId> org.springframework< / groupId> 
< artifactId> spring-core< / artifactId> 
< version> $ {spring.version}< / version> 
< /依赖关系> 
< dependency> 
< groupId> org.springframework< / groupId> 
< artifactId> spring-orm< / artifactId> 
< version> $ {spring.version}< / version> 
< /依赖关系> 
< dependency> 
< groupId> commons-dbcp< / groupId> 
< artifactId> commons-dbcp< / artifactId> 
< version> 1.4< / version> 
< /依赖关系> 
 
 <！ - 对象关系映射：Hibernate  - > 
< dependency> 
< groupId> org.hibernate< / groupId> 
< artifactId> hibernate-core< / artifactId> 
< version> $ {hibernate.version}< / version> 
< /依赖关系> 
< dependency> 
< groupId> org.hibernate< / groupId> 
< artifactId> hibernate-entitymanager< / artifactId> 
< version> $ {hibernate.version}< / version> 
< /依赖关系> 
< dependency> 
< groupId> javax.transaction< / groupId> 
< artifactId> jta< / artifactId> 
< version> 1.1< / version> 
< /依赖关系> 
< dependency> 
< groupId> org.hibernate.javax.persistence< / groupId> 
< artifactId> hibernate-jpa-2.0-api< / artifactId> 
< version> 1.0.1.Final< / version> 
< /依赖关系> 
 
 <！ -  Hibernate Annotations Dependencies  - > 
< dependency> 
< groupId> org.hibernate< / groupId> 
< artifactId> hibernate-annotations< / artifactId> 
< version> 3.5.6-最终< / version> 
< /依赖关系> 
< dependency> 
< groupId> org.hibernate< / groupId> 
< artifactId> hibernate-commons-annotations< / artifactId> 
< version> 3.3.0.ga< / version> 
< /依赖关系> 
 
 <！ - 数据库：HSQLDB  - > 
< dependency> 
< groupId> org.hsqldb< / groupId> 
< artifactId> hsqldb< / artifactId> 
< version> 2.0.0< / version> 
< /依赖关系> 
 
 <！ - 连接池：C3P0  - > 
< dependency> 
< groupId> c3p0< / groupId> 
< artifactId> c3p0< / artifactId> 
< version> 0.9.1.2< / version> 
< /依赖关系> 
 
 <！ - 二级缓存：Ehcache  - > 
< dependency> 
< groupId> ehcache< / groupId> 
< artifactId> ehcache< / artifactId> 
< version> 1.2.3< / version> 
< /依赖关系> 
 
 <！ - 记录：SLF4j& Log4J  - > 
< dependency> 
< groupId> org.slf4j< / groupId> 
< artifactId> jcl-over-slf4j< / artifactId> 
< version> 1.6.6< / version> 
< scope>运行时< / scope> 
< /依赖关系> 
< dependency> 
< groupId> org.slf4j< / groupId> 
< artifactId> slf4j-api< / artifactId> 
< version> 1.6.6< / version> 
< scope>运行时< / scope> 
< /依赖关系> 
< dependency> 
< groupId> org.slf4j< / groupId> 
< artifactId> slf4j-log4j12< / artifactId> 
< version> 1.6.6< / version> 
< scope>运行时< / scope> 
< /依赖关系> 
< dependency> 
< groupId> log4j< / groupId> 
< artifactId> log4j< / artifactId> 
< version> 1.2.17< / version> 
< scope>运行时< / scope> 
< /依赖关系> 
 
 <！ -  Testing：JUnit  - > 
< dependency> 
< groupId> junit< / groupId> 
< artifactId> junit< / artifactId> 
< version> 4.10< / version> 
< /依赖关系> 
 
 <！ -  Testing：Spring  - > 
< dependency> 
< groupId> org.springframework< / groupId> 
< artifactId> spring-test< / artifactId> 
< version> $ {spring.version}< / version> 
< /依赖关系> 
 
< /依赖关系> 
 
< / project>

跑步 

  mvn hibernate3：hbm2ddl

无法与$ / b> 

  [错误]无法执行目标org.codehaus.mojo：hibernate3-maven-plugin：3.0：hbm2ddl 
（default-cli）关于项目示例：创建AntRun任务时发生错误。 
 NullPointerException  - > [帮助1]

完整的堆栈跟踪为：

  [错误]无法执行目标org.codehaus.mojo：hibernate3-maven-plugin：3.0：hbm2ddl（default-cli）关于项目示例：创建AntRun任务。 NullPointerException  - > [Help 1] 
 org.apache.maven.lifecycle.LifecycleExecutionException：无法执行目标项目示例中的org.codehaus.mojo：hibernate3-maven-plugin：3.0：hbm2ddl（default-cli）：出现错误创建AntRun任务。 
 at org.apache.maven.lifecycle.internal.MojoExecutor.execute（MojoExecutor.java:217）
 at org.apache.maven.lifecycle.internal.MojoExecutor.execute（MojoExecutor.java:153） 
 at org.apache.maven.lifecycle.internal.MojoExecutor.execute（MojoExecutor.java:145）
 at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject（LifecycleModuleBuilder.java:84） 
 at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject（LifecycleModuleBuilder.java:59）
 at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild（LifecycleStarter.java:183） 
 at org.apache.maven.lifecycle.internal.LifecycleStarter.execute（LifecycleStarter.java:161）
 at org.apache.maven.DefaultMaven.doExecute（DefaultMaven.java:319）
在org.apache.maven.DefaultMaven.execute（DefaultMaven.java:156）
在org.apache.maven.cli.MavenCli.execute（MavenCli.java:537）
在org.apache.maven .cli.MavenCli.doMain（MavenCli.java： 
 at org.apache.maven.cli.MavenCli.main（MavenCli.java:141）
 at sun.reflect.NativeMethodAccessorImpl.invoke0（Native Method）
 at sun.reflect。 NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:39）
 at sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:25）
 at java.lang.reflect.Method.invoke（Method.java:597） 
在org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced（Launcher.java:290）
 at org.codehaus.plexus.classworlds.launcher.Launcher.launch（Launcher.java:230） 
 at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode（Launcher.java:409）
 at org.codehaus.plexus.classworlds.launcher.Launcher.main（Launcher.java:352） 
导致：org.apache.maven.plugin.MojoExecutionException：创建AntRun任务时发生错误。 
 at org.codehaus.mojo.hibernate3.AbstractHibernateMojo.execute（AbstractHibernateMojo.java:84）
 at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo（DefaultBuildPluginManager.java:101）
在org.apache.maven.lifecycle.internal.MojoExecutor.execute（MojoExecutor.java:209）
 ... 19 more 
引起：java.lang.NullPointerException $ b $ org.codehaus .plexus.configuration.DefaultPlexusConfiguration.add（DefaultPlexusConfiguration.java:174）
位于org.codehaus.plexus.configuration.DefaultPlexusConfiguration.addChild（DefaultPlexusConfiguration.java:150）
位于org.codehaus.mojo.hibernate3 .util.PlexusConfigurationUtils.setHibernateConfiguration（PlexusConfigurationUtils.java:289）
 at org.codehaus.mojo.hibernate3.util.PlexusConfigurationUtils.parseHibernateTool（PlexusConfigurationUtils.java:67）
 at org.codehaus.mojo.hibernate3 .AbstractHibernateToolMojo.getConfiguration（AbstractHibernateToolMojo.java:60）$ or $ $ b $ org.code haus.mojo.hibernate3.AbstractHibernateMojo.execute（AbstractHibernateMojo.java:76）
 ... 21 more

希望有人能对此有所阐述！

解决方案

我在尝试使maven引导时遇到同样的问题来自hibernate模型的数据库（问题描述在生成数据库模式（Hibernate ）

我的hbm2ddl在以下版本的组合中工作得很好：
Hibernate（runtime）：4.1.7 .Final
hibernate3-maven-plugin：3.6.10.Final，指定的插件版本2.2
hibernate3-maven-plugin的hibernate-validator依赖项：4.2.0.Final

在pom的相关部分之下：

版本： 

 <性状> 
 
< org.hibernate.version> 4.1.7.Final< /org.hibernate.version> 
< hibernate.maven.plugin.version> 3.6.10.Final< /hibernate.maven.plugin.version> 
 
< / properties>

hibernate3-maven-plugin的定义： 

 <建立> 
< plugins> 
< plugin> 
< groupId> org.codehaus.mojo< / groupId> 
< artifactId> hibernate3-maven-plugin< / artifactId> 
< version> 2.2< / version> 
<配置> 
<组件> 
< component> 
<名称> hbm2ddl< / name> 
< implementation> jpa配置< / implementation> 
< / component> 
 
< /组件> 
 
< componentProperties> 
< outputfilename> schema.ddl< / outputfilename> 
< create> true< / create> 
<导出> false< /导出> 
< format> true< / format> 
< drop> false< / drop> 
< jdk5> true< / jdk5> 
< propertyfile> target / test-classes / application.properties< / propertyfile> 
< skip> $ {skipTests}< / skip> 
< / componentProperties> 
< / configuration> 
<执行次数> 
<执行> 
<阶段>程序类< /阶段> 
<目标> 
< goal> hbm2ddl< / goal> 
< /目标> 
< /执行> 
< /执行次数> 
<依赖关系> 
< dependency> 
< groupId> org.hibernate< / groupId> 
< artifactId> hibernate-entitymanager< / artifactId> 
< version> $ {hibernate.maven.plugin.version}< / version> 
<排除项> 
<排除> 
< groupId> cglib< / groupId> 
< artifactId> cglib< / artifactId> 
< /排除> 
<排除> 
< groupId> commons-logging< / groupId> 
< artifactId> commons-logging< / artifactId> 
< /排除> 
< /排除> 
< /依赖关系> 
< dependency> 
< groupId> org.hibernate< / groupId> 
< artifactId> hibernate-core< / artifactId> 
< version> $ {hibernate.maven.plugin.version}< / version> 
<排除项> 
<排除> 
< groupId> cglib< / groupId> 
< artifactId> cglib< / artifactId> 
< /排除> 
<排除> 
< groupId> commons-logging< / groupId> 
< artifactId> commons-logging< / artifactId> 
< /排除> 
< /排除> 
< /依赖关系> 
< dependency> 
< groupId> org.hibernate< / groupId> 
< artifactId> hibernate-validator< / artifactId> 
< version> 4.2.0.Final< / version> 
< /依赖关系> 
 
< /依赖关系> 
< / plugin> 
 
< / plugins> 
< / build>

运行时依赖关系： 

 <依赖性> 
 
< dependency> 
< groupId> org.hibernate< / groupId> 
< artifactId> hibernate-core< / artifactId> 
< version> $ {org.hibernate.version}< / version> 
< /依赖关系> 
 
< dependency> 
< groupId> org.hibernate< / groupId> 
< artifactId> hibernate-entitymanager< / artifactId> 
< version> $ {org.hibernate.version}< / version> 
< /依赖关系> 
< /依赖关系>

我希望这有助于您。


I had to downgrade Hibernate from version 4 to version 3 (3.3.2.GA to be specific), due to current lack of support for Hibernate 4 within Spring, and now the project fails to build when it attempts to generate schema with hbm2ddl. The error is too vague, and Google-ing it hasn't yielded much.

Here's my pom.xml:

<?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>

    <groupId>com.example</groupId>
    <artifactId>example</artifactId>
    <version>1.0-SNAPSHOT</version>
    <name>Spring + Hibernate Example</name>
    <packaging>jar</packaging>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <spring.version>3.1.2.RELEASE</spring.version>
        <hibernate.version>3.3.2.GA</hibernate.version>
        <java.version>1.6</java.version>
    </properties>

    <build>
        <extensions>
            <extension>
                <groupId>org.hsqldb</groupId>
                <artifactId>hsqldb</artifactId>
                <version>2.0.0</version>
            </extension>
            <extension>
                <groupId>log4j</groupId>
                <artifactId>log4j</artifactId>
                <version>1.2.17</version>
            </extension>
        </extensions>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>2.0.2</version>
                <configuration>
                    <source>${java.version}</source>
                    <target>${java.version}</target>
                </configuration>
            </plugin>
            <plugin>
                <!-- Run "mvn hibernate3:hbm2ddl" to generate schema -->
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>hibernate3-maven-plugin</artifactId>
                <version>3.0</version>

                <executions>
                    <execution>
                        <id>generate-ddl</id>
                        <phase>process-classes</phase>
                        <goals>
                            <goal>hbm2ddl</goal>
                        </goals>
                    </execution>
                </executions>

                <configuration>
                    <hibernatetool destdir="${project.build.directory}/generated">
                        <annotationConfiguration configurationfile="hibernate.cfg.xml"/>

                        <hbm2ddl export="false" create="true" update="true"
                                 format="format" outputfilename="schemaDiff.ddl"/>

                    </hibernatetool>
                </configuration>

            </plugin>
        </plugins>
    </build>

    <dependencies>
        <!-- Inversion of Control: Spring Dependencies -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
            <exclusions>
                <!-- Exclude the problematic commons-logging -->
                <exclusion>
                    <groupId>commons-logging</groupId>
                    <artifactId>commons-logging</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>commons-dbcp</groupId>
            <artifactId>commons-dbcp</artifactId>
            <version>1.4</version>
        </dependency>

        <!-- Object Relational Mapping: Hibernate -->
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>${hibernate.version}</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-entitymanager</artifactId>
            <version>${hibernate.version}</version>
        </dependency>
        <dependency>
            <groupId>javax.transaction</groupId>
            <artifactId>jta</artifactId>
            <version>1.1</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate.javax.persistence</groupId>
            <artifactId>hibernate-jpa-2.0-api</artifactId>
            <version>1.0.1.Final</version>
        </dependency>

        <!-- Hibernate Annotations Dependencies -->
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-annotations</artifactId>
            <version>3.5.6-Final</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-commons-annotations</artifactId>
            <version>3.3.0.ga</version>
        </dependency>

        <!-- Database: HSQLDB -->
        <dependency>
            <groupId>org.hsqldb</groupId>
            <artifactId>hsqldb</artifactId>
            <version>2.0.0</version>
        </dependency>

        <!-- Connection Pool: C3P0 -->
        <dependency>
            <groupId>c3p0</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.1.2</version>
        </dependency>

        <!-- Second-level caching: Ehcache -->
        <dependency>
            <groupId>ehcache</groupId>
            <artifactId>ehcache</artifactId>
            <version>1.2.3</version>
        </dependency>

        <!-- Logging: SLF4j & Log4J -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>jcl-over-slf4j</artifactId>
            <version>1.6.6</version>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.6.6</version>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>1.6.6</version>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
            <scope>runtime</scope>
        </dependency>

        <!-- Testing: JUnit -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.10</version>
        </dependency>

        <!-- Testing: Spring -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>${spring.version}</version>
        </dependency>

    </dependencies>

</project>

Running

mvn hibernate3:hbm2ddl

fails with

[ERROR] Failed to execute goal org.codehaus.mojo:hibernate3-maven-plugin:3.0:hbm2ddl
(default-cli) on project example: There was an error creating the AntRun task.
NullPointerException -> [Help 1]

The full stack trace is:

[ERROR] Failed to execute goal org.codehaus.mojo:hibernate3-maven-plugin:3.0:hbm2ddl (default-cli) on project example: There was an error creating the AntRun task. NullPointerException -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.codehaus.mojo:hibernate3-maven-plugin:3.0:hbm2ddl (default-cli) on project example: There was an error creating the AntRun task.
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:217)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:319)
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
Caused by: org.apache.maven.plugin.MojoExecutionException: There was an error creating the AntRun task.
    at org.codehaus.mojo.hibernate3.AbstractHibernateMojo.execute(AbstractHibernateMojo.java:84)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
    ... 19 more
Caused by: java.lang.NullPointerException
    at org.codehaus.plexus.configuration.DefaultPlexusConfiguration.add(DefaultPlexusConfiguration.java:174)
    at org.codehaus.plexus.configuration.DefaultPlexusConfiguration.addChild(DefaultPlexusConfiguration.java:150)
    at org.codehaus.mojo.hibernate3.util.PlexusConfigurationUtils.setHibernateConfiguration(PlexusConfigurationUtils.java:289)
    at org.codehaus.mojo.hibernate3.util.PlexusConfigurationUtils.parseHibernateTool(PlexusConfigurationUtils.java:67)
    at org.codehaus.mojo.hibernate3.AbstractHibernateToolMojo.getConfiguration(AbstractHibernateToolMojo.java:60)
    at org.codehaus.mojo.hibernate3.AbstractHibernateMojo.execute(AbstractHibernateMojo.java:76)
    ... 21 more

Hopefully someone can shed some light on this!

解决方案

I faced the same problem while trying to make maven bootstrap a database from a hibernate model (issue described in Generate database schema (Hibernate) on maven test).

I got hbm2ddl working quite well with the following combination of versions: Hibernate (runtime): 4.1.7.Final hibernate3-maven-plugin: 3.6.10.Final, specified plugin version 2.2 hibernate3-maven-plugin's hibernate-validator dependency: 4.2.0.Final

Below the relevant parts of the pom:

Versions:

<properties>

    <org.hibernate.version>4.1.7.Final</org.hibernate.version>
    <hibernate.maven.plugin.version>3.6.10.Final</hibernate.maven.plugin.version>

</properties>

hibernate3-maven-plugin's definition:

<build>
    <plugins>
        <plugin>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>hibernate3-maven-plugin</artifactId>
            <version>2.2</version>
            <configuration>
                <components>
                    <component>
                        <name>hbm2ddl</name>
                        <implementation>jpaconfiguration</implementation>
                    </component>

                </components>

                <componentProperties>
                    <outputfilename>schema.ddl</outputfilename>
                    <create>true</create>
                    <export>false</export>
                    <format>true</format>
                    <drop>false</drop>
                    <jdk5>true</jdk5>
                    <propertyfile>target/test-classes/application.properties</propertyfile>
                    <skip>${skipTests}</skip>
                </componentProperties>
            </configuration>
            <executions>
                <execution>
                    <phase>process-classes</phase>
                    <goals>
                        <goal>hbm2ddl</goal>
                    </goals>
                </execution>
            </executions>
            <dependencies>
                <dependency>
                    <groupId>org.hibernate</groupId>
                    <artifactId>hibernate-entitymanager</artifactId>
                    <version>${hibernate.maven.plugin.version}</version>
                    <exclusions>
                        <exclusion>
                            <groupId>cglib</groupId>
                            <artifactId>cglib</artifactId>
                        </exclusion>
                        <exclusion>
                            <groupId>commons-logging</groupId>
                            <artifactId>commons-logging</artifactId>
                        </exclusion>
                    </exclusions>
                </dependency>
                <dependency>
                    <groupId>org.hibernate</groupId>
                    <artifactId>hibernate-core</artifactId>
                    <version>${hibernate.maven.plugin.version}</version>
                    <exclusions>
                        <exclusion>
                            <groupId>cglib</groupId>
                            <artifactId>cglib</artifactId>
                        </exclusion>
                        <exclusion>
                            <groupId>commons-logging</groupId>
                            <artifactId>commons-logging</artifactId>
                        </exclusion>
                    </exclusions>
                </dependency>
                <dependency>
                    <groupId>org.hibernate</groupId>
                    <artifactId>hibernate-validator</artifactId>
                    <version>4.2.0.Final</version>
                </dependency>

            </dependencies>
        </plugin>

    </plugins>
</build>

Runtime dependencies:

<dependencies>

    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-core</artifactId>
        <version>${org.hibernate.version}</version>
    </dependency>

    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-entitymanager</artifactId>
        <version>${org.hibernate.version}</version>
    </dependency>
</dependencies>

I hope this helps.

这篇关于Maven + Spring + Hibernate：hibernate3-maven-plugin hbm2ddl由于原因失败“由......引发：java.lang.NullPointerException”的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！

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