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hibernate3：hbm2ddl目标没有jdbc连接

分类: 技术问答 • 2022-05-13 17:04:53
问题描述：

我想为我的应用程序使用hibernate-3.4.0.GA创建ddl脚本。这是我的pom.xmlhibernate3：hbm2ddl目标没有jdbc连接

<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/maven-v4_0_0.xsd"> 
<modelVersion>4.0.0</modelVersion> 
<groupId>com.apprick.webservice</groupId> 
<artifactId>apprickwebapp</artifactId> 
<packaging>war</packaging> 
<version>1.0-SNAPSHOT</version> 
<name>webapp Maven Webapp</name> 
<url>http://maven.apache.org</url> 

<dependencies> 

    <!-- MySQL database driver --> 
    <dependency> 
     <groupId>mysql</groupId> 
     <artifactId>mysql-connector-java</artifactId> 
     <version>5.1.21</version> 
    </dependency> 

    <!-- Hibernate framework --> 
    <dependency> 
     <groupId>hibernate</groupId> 
     <artifactId>hibernate-entitymanager</artifactId> 
     <version>3.4.0.GA</version> 
    </dependency> 


    <!-- Hibernate library dependecy start --> 
    <dependency> 
     <groupId>org.slf4j</groupId> 
     <artifactId>slf4j-api</artifactId> 
     <version>1.6.6</version> 
    </dependency> 

    <dependency> 
     <groupId>dom4j</groupId> 
     <artifactId>dom4j</artifactId> 
     <version>1.6.1</version> 
    </dependency> 

    <dependency> 
     <groupId>commons-logging</groupId> 
     <artifactId>commons-logging</artifactId> 
     <version>1.1.1</version> 
    </dependency> 

    <dependency> 
     <groupId>commons-collections</groupId> 
     <artifactId>commons-collections</artifactId> 
     <version>3.2.1</version> 
    </dependency> 

    <dependency> 
     <groupId>cglib</groupId> 
     <artifactId>cglib</artifactId> 
     <version>2.2</version> 
    </dependency> 
    <!-- Hibernate library dependecy end --> 

    <dependency> 
     <groupId>javax.transaction</groupId> 
     <artifactId>jta</artifactId> 
     <version>1.1</version> 
    </dependency> 

    <dependency> 
     <groupId>javax.servlet</groupId> 
     <artifactId>servlet-api</artifactId> 
     <version>2.5</version> 
    </dependency> 

    <dependency> 
     <groupId>junit</groupId> 
     <artifactId>junit</artifactId> 
     <version>4.8.1</version> 
     <scope>test</scope> 
    </dependency> 
</dependencies> 

<build> 
    <plugins> 

     <plugin> 
      <artifactId>maven-compiler-plugin</artifactId> 
      <configuration> 
       <source>1.6</source> 
       <target>1.6</target> 
      </configuration> 
     </plugin> 

     <plugin> 
      <groupId>org.codehaus.mojo</groupId> 
      <artifactId>hibernate3-maven-plugin</artifactId> 
      <version>2.2</version> 
      <configuration> 
       <components> 
        <component> 
         <name>hbm2ddl</name> 
         <implementation>annotationconfiguration</implementation> 
        </component> 
       </components> 
       <componentProperties> 
        <drop>true</drop> 
        <configurationfile>src/main/resources/hibernate.cfg.xml</configurationfile> 
       </componentProperties> 
      </configuration> 
      <dependencies> 
       <dependency> 
        <groupId>mysql</groupId> 
        <artifactId>mysql-connector-java</artifactId> 
        <version>5.1.8</version> 
       </dependency> 
      </dependencies> 
     </plugin> 

    </plugins> 
    <finalName>webapp</finalName> 
</build> 
</project>

，因为我使用Hibernate 3.4.0-GA整个项目是基于这样的注释中有我的项目没有任何的persistence.xml。 hibernate.cfg.xml文件是这样

<?xml version="1.0" encoding="utf-8"?> 
<!DOCTYPE hibernate-configuration PUBLIC 
"-//Hibernate/Hibernate Configuration DTD 3.0//EN" 
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd"> 
<hibernate-configuration> 
    <session-factory> 
    <property name="hibernate.bytecode.use_reflection_optimizer">false</property> 
    <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property> 
    <property name="hibernate.connection.password">password</property> 
    <!-- <property name="hibernate.connection.url">jdbc:mysql://localhost/apprick_db</property> --> 
    <property name="hibernate.connection.username">rsingh</property> 
    <property name="hibernate.connection.password">welcome</property> 
    <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property> 
    <property name="show_sql">true</property> 
    <!-- <property name="hbm2ddl.auto">create</property> --> 
    <mapping class="com.apprick.common.User"></mapping> 
    <mapping class="com.apprick.common.Customer"></mapping> 
    <mapping class="com.apprick.common.ApprickAdmin"></mapping> 
    </session-factory> 
</hibernate-configuration>

现在，当我运行mvn Hibernate3的：就是hbm2ddl我得到下面的异常

java.lang.UnsupportedOperationException: The user must supply a JDBC connection 
at org.hibernate.connection.UserSuppliedConnectionProvider.getConnection(UserSuppliedConnectionProvider.java:54) 
at org.hibernate.tool.hbm2ddl.ManagedProviderConnectionHelper.prepare(ManagedProviderConnectionHelper.java:52) 
at org.hibernate.tool.hbm2ddl.SchemaExport.execute(SchemaExport.java:252) 
at org.hibernate.tool.hbm2ddl.SchemaExport.create(SchemaExport.java:211) 
at org.codehaus.mojo.hibernate3.exporter.Hbm2DDLExporterMojo.doExecute(Hbm2DDLExporterMojo.java:112) 
at org.codehaus.mojo.hibernate3.HibernateExporterMojo.execute(HibernateExporterMojo.java:152) 
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101) 
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209) 
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)

任何人都可以请建议我为它的解决方案。自从最近两天以来，我一直在努力完成这项工作，并且完全让我发疯。

感谢您阅读这篇文章，我感谢您的意见。

答

我希望你现在已经明白了。但如果你没有在这里是一个暗示：

，因为您指定的完整路径

<configurationfile>hibernate.cfg.xml</configurationfile>

是不够的部分

<componentProperties> 
    <drop>true</drop> 
    <configurationfile>src/main/resources/hibernate.cfg.xml</configurationfile> 
</componentProperties>

是错误的，所提供的hibernate.cfg.xml文件位于你的根类路径（即WEB-INF/classes）

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