HHH000231:架构导出失败:java.sql.SQLException:没有为jdbc找到合适的驱动程序:postgresql

时间:2014-01-27 09:21:25

标签: java jboss7.x postgresql-9.2

我试过运行我的第一个Hibernate& Jboss开发工作室IDE中的Jboss AS-7。所以我从一个简单的例子开始,经过一周的努力,现在我可以说我对跟踪错误一无所知(我使用postgresql作为数据库)

堆栈跟踪是:

12:18:14,080 WARN  [org.hibernate.engine.jdbc.internal.JdbcServicesImpl] (http--0.0.0.0-8080-1) HHH000342: Could not obtain connection to query metadata : No suitable driver found for jdbc:postgresql://localhost:5432/postgres
12:18:14,081 INFO  [org.hibernate.dialect.Dialect] (http--0.0.0.0-8080-1) HHH000400: Using dialect: org.hibernate.dialect.PostgreSQLDialect
12:18:14,081 INFO  [org.hibernate.engine.jdbc.internal.LobCreatorBuilder] (http--0.0.0.0-8080-1) HHH000422: Disabling contextual LOB creation as connection was null
12:18:14,082 INFO  [org.hibernate.engine.transaction.internal.TransactionFactoryInitiator] (http--0.0.0.0-8080-1) HHH000399: Using default transaction strategy (direct JDBC transactions)
12:18:14,083 INFO  [org.hibernate.hql.internal.ast.ASTQueryTranslatorFactory] (http--0.0.0.0-8080-1) HHH000397: Using ASTQueryTranslatorFactory
12:18:14,088 INFO  [org.hibernate.tool.hbm2ddl.SchemaExport] (http--0.0.0.0-8080-1) HHH000227: Running hbm2ddl schema export
12:18:14,088 ERROR [org.hibernate.tool.hbm2ddl.SchemaExport] (http--0.0.0.0-8080-1) HHH000231: Schema export unsuccessful: java.sql.SQLException: No suitable driver found for jdbc:postgresql://localhost:5432/postgres

=============================================== =============================

我的hibernate.cfg.xml是:

<?xml version="1.0"?>
<!DOCTYPE hibernate-configuration SYSTEM "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
 <session-factory>
  <property name="hibernate.connection.driver_class">org.postgresql.Driver</property>
  <property name="hibernate.connection.password">amir</property>
  <property name="hibernate.connection.url">jdbc:postgresql://localhost:5432/postgres</property>
  <property name="hibernate.connection.username">postgres</property>
  <!-- JDBC connection pool (use the built-in) -->
  <property name="connection.pool_size">1</property>
  <!-- SQL dialect -->
  <property name="dialect">org.hibernate.dialect.H2Dialect</property>
  <!-- Disable the second-level cache  -->
  <property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property>
  <!-- Echo all executed SQL to stdout -->
  <property name="show_sql">true</property>
  <!-- Drop and re-create the database schema on startup -->
  <property name="hbm2ddl.auto">create</property>
  <property name="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</property>
  <property name="hibernate.listeners.envers.autoRegister">false</property> 

 </session-factory>

我的persistence.xml是:

<?xml version="1.0" encoding="UTF-8"?>
<!-- Persistence deployment descriptor for dev profile -->
<persistence xmlns="http://java.sun.com/xml/ns/persistence" 
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd" 
             version="2.0">

   <persistence-unit name="Hiber_test" transaction-type="JTA">
      <provider>org.hibernate.ejb.HibernatePersistence</provider>
      <jta-data-source>java:/Hiber_testDatasource</jta-data-source>
       <properties>
        <property name="hibernate.dialect" value="org.hibernate.dialect.PostgreSQLDialect"/>
        <property name="hibernate.connection.url" value="jdbc:postgresql://localhost:5432/postgres"/>
        <property name="hibernate.connection.username" value="postgres"/>
        <property name="hibernate.connection.password" value="amir"/>
        <property name="hibernate.connection.driver_class" value="org.postgresql.Driver"/>

         <property name="hibernate.dialect" value="org.hibernate.dialect.PostgreSQLDialect"/>
         <property name="hibernate.hbm2ddl.auto" value="update"/>
         <property name="hibernate.show_sql" value="true"/>
         <property name="hibernate.format_sql" value="true"/>
         <property name="jboss.entity.manager.factory.jndi.name" value="java:/Hiber_testEntityManagerFactory"/>
      </properties>
   </persistence-unit>

</persistence>

=============================================== ============================= 我的java程序是:

try {
          Class.forName("org.postgresql.Driver");
          //on classpath
        } catch(ClassNotFoundException e) {
          // not on classpath
            System.out.println("KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK" + e);
        }


        Configuration cfg = new Configuration()
        .addResource("Event.hbm.xml").configure();

        SessionFactory sessions = cfg.buildSessionFactory();

        Session session = sessions.openSession();

=============================================== ==============================

我非常感谢任何能帮我解决这个问题的人.`

2 个答案:

答案 0 :(得分:0)

问题解决了。

我所做的如下:

1-因为我正在使用jdk 1.7实现我的应用程序所以我必须使用合适的postgresql驱动程序从这个链接:http://jdbc.postgresql.org/download.html(它应该是JDBC41 Postgresql驱动程序版本9.3-1100而不是JDBC4 Postgresql驱动程序版本9.3 -1100)

2- StephaneM向我指出了在jboss AS-7中手动配置jdbc驱动程序的正确方向,但不必在此处生成module.xml - &gt; $ JBOSS_HOME /模块/组织/ PostgreSQL的/主 而应该做以下事情:

3-将jdbc sql jar添加到: 〜\ jboss7 \模块\有机\冬眠\主

4-并修改那里的module.xml并将<resource-root>更改为<resource-root path="JDBC41 Postgresql Driver Version 9.3-1100"/>

5-不要忘记复制JDBC41 Postgresql驱动程序版本9.3-1100.jar。

就是这样。 :)

答案 1 :(得分:0)

您不应该编辑来自JBoss的模块。由于您使用JPA和persistence.xml,因此不需要hibernate.cfg.xml。由于您使用数据源(这是好的),因此您可以在standalone.xml中配置connection.url,connection.username和connection.password。您在persistence.xml中不需要这些属性。

您需要在standalone.xml中配置数据源:

        <subsystem xmlns="urn:jboss:domain:datasources:1.1">
        <datasources>
            <datasource jndi-name="java:jboss/datasources/ExampleDS" pool-name="ExampleDS" enabled="true" use-java-context="true">
                <connection-url>jdbc:h2:mem:test;DB_CLOSE_DELAY=-1;DB_CLOSE_ON_EXIT=FALSE</connection-url>
                <driver>h2</driver>
                <security>
                    <user-name>sa</user-name>
                    <password>sa</password>
                </security>
            </datasource>
            <datasource jndi-name="java:/Hiber_testDatasource" pool-name="bookingDatasource" enabled="true">
                <connection-url>jdbc:postgresql://localhost:5432/postgres</connection-url>
                <driver>postgresql</driver>
                <security>
                    <user-name>postgres</user-name>
                    <password>amir</password>
                </security>
            </datasource>
            <drivers>
                <driver name="h2" module="com.h2database.h2">
                    <xa-datasource-class>org.h2.jdbcx.JdbcDataSource</xa-datasource-class>
                </driver>
                <driver name="postgresql" module="org.postgresql.jdbc">
                    <xa-datasource-class>org.postgresql.Driver</xa-datasource-class>
                </driver>
            </drivers>
        </datasources>
    </subsystem>

然后使用modules.xml在$ JBOSS_HOME / modules / org / postgresql / jdbc / main中创建一个新模块:

<module xmlns="urn:jboss:module:1.1" name="org.postgresql.jdbc">

    <resources>
        <resource-root path="postgresql-9.1-901.jdbc4.jar"/>
    </resources>
    <dependencies>
        <module name="javax.api"/>
        <module name="javax.transaction.api"/>
        <module name="javax.servlet.api" optional="true"/>
    </dependencies>
</module>

您可以部署驱动程序,而不是创建模块,但我通常使用模块。