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我使用的休眠版本是 3.2.5

这就是我的 cfg.xml 文件的样子，我正在使用 hibernate.connection.provider_class 来检索连接：

<property name="hibernate.connection.provider_class">com.jdbc.ConnProvider</property>
<property name="hibernate.jdbc.batch_size">30</property>
<property name="hibernate.dialect">org.hibernate.dialect.OracleDialect</property>
<property name="hibernate.cache.use_query_cache">false</property>
<property name="hibernate.cache.use_second_level_cache">false</property>
<property name="hibernate.connection.release_mode">after_transaction</property>
<property name="hibernate.connection.autocommit">true</property>
<property name="hibernate.connection.pool_size">0</property>
<property name="hibernate.current_session_context_class">thread</property>    
<property name="hibernate.show_sql">true</property>
<property name="hibernate.hbm2ddl.auto">update</property>

这是 ConnProvider 类：

    package com.jdbc;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.Properties;
import org.hibernate.HibernateException;
import org.hibernate.connection.ConnectionProvider;

/**
 *
 * @author gOMzY
 */
class ConnProvider implements ConnectionProvider {

    @Override
    public Connection getConnection() throws SQLException {
        Connection conn = null;
        try{

            Class.forName("oracle.jdbc.OracleDriver");
            conn=DriverManager.getConnection("<url>","<username>","<pwd>");
            System.out.println("Connected!!!");
        }catch(Exception e){
            throw new UnsupportedOperationException("Not supported yet.");
        }
        return conn;
    }

    @Override
    public void closeConnection(Connection cnctn) throws SQLException {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public boolean supportsAggressiveRelease() {
        return false;
    }

    @Override
    public void close() throws HibernateException {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public void configure(Properties prprts) throws HibernateException {
        throw new UnsupportedOperationException("Not supported yet.");
    }

}

我得到的例外：

严重：无法实例化连接提供程序 java.lang.IllegalAccessException：类 org.hibernate.connection.ConnectionProviderFactory 无法使用 sun.reflect.Reflection.ensureMemberAccess 处的修饰符“”访问 com.infy.jdbc.ConnProvider 类的成员（未知来源) 在 java.lang.Class.newInstance0(Unknown Source) 在 java.lang.Class.newInstance(Unknown Source) 在 org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:73) 在 org.hibernate.connection.ConnectionProviderFactory .newConnectionProvider(ConnectionProviderFactory.java:56) 在 org.hibernate.cfg.SettingsFactory.createConnectionProvider(SettingsFactory.java:414) 在 org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:62) 在 org.hibernate.cfg。Configuration.buildSettings(Configuration.java:2009) 在 org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1292) 在 com.infy.jdbc.HibernateStartup.main(HibernateStartup.java:19)

请建议如何解决这个问题。

问候，

4

1 回答 1

1

请注意，您的连接提供者具有默认可见性，也许它应该是公开的：

public ConnProvider implements ConnectionProvider { ... }
于 2012-05-19T20:20:19.187 回答