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MyBatis官方文档

• ORM框架

Mybatis管理事务的两种方式

• 使用JDBC的事务管理机制,就是利用java.sql.Connection对象完成对事务的提交
• 使用MANAGED的事务管理机制，这种机制mybatis自身不会去实现事务管理，而是让程序的WEB容器（JBOSS,WebLogic,Tomcat）来实现对事务的管理

源码

/** * {@link Transaction} that lets the container manage the full lifecycle of the transaction. * Delays connection retrieval until getConnection() is called. * Ignores all commit or rollback requests. * By default, it closes the connection but can be configured not to do it. * @author Clinton Begin * @see ManagedTransactionFactory */public class ManagedTransaction implements Transaction {
     private static final Log log = LogFactory.getLog(ManagedTransaction.class);  private DataSource dataSource;  private TransactionIsolationLevel level;  private Connection connection;  private boolean closeConnection;  public ManagedTransaction(Connection connection, boolean closeConnection) {
       this.connection = connection;    this.closeConnection = closeConnection;  }  public ManagedTransaction(DataSource ds, TransactionIsolationLevel level, boolean closeConnection) {
       this.dataSource = ds;    this.level = level;    this.closeConnection = closeConnection;  }  @Override  public Connection getConnection() throws SQLException {
       if (this.connection == null) {
         openConnection();    }    return this.connection;  }  @Override  public void commit() throws SQLException {
       // Does nothing  }  @Override  public void rollback() throws SQLException {
       // Does nothing  }  @Override  public void close() throws SQLException {
       if (this.closeConnection && this.connection != null) {
         if (log.isDebugEnabled()) {
           log.debug("Closing JDBC Connection [" + this.connection + "]");      }      this.connection.close();    }  }  protected void openConnection() throws SQLException {
       if (log.isDebugEnabled()) {
         log.debug("Opening JDBC Connection");    }    this.connection = this.dataSource.getConnection();    if (this.level != null) {
         this.connection.setTransactionIsolation(this.level.getLevel());    }  }  @Override  public Integer getTimeout() throws SQLException {
       return null;  }}

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