Spring事务配置属性参数

Spring事务描述信息都由TransactionDefinition接口定义，有如下几个方面：

 

1、事务移植性（propagation）：

 

int PROPAGATION_REQUIRED = 0;

 

/**
	 * Support a current transaction; create a new one if none exists.
	 * Analogous to the EJB transaction attribute of the same name.
	 * <p>This is typically the default setting of a transaction definition,
	 * and typically defines a transaction synchronization scope.
	 */
	int PROPAGATION_REQUIRED = 0;

 

 int PROPAGATION_SUPPORTS = 1;

 

/**
	 * Support a current transaction; execute non-transactionally if none exists.
	 * Analogous to the EJB transaction attribute of the same name.
	 * <p><b>NOTE:</b> For transaction managers with transaction synchronization,
	 * <code>PROPAGATION_SUPPORTS</code> is slightly different from no transaction
	 * at all, as it defines a transaction scope that synchronization might apply to.
	 * As a consequence, the same resources (a JDBC <code>Connection</code>, a
	 * Hibernate <code>Session</code>, etc) will be shared for the entire specified
	 * scope. Note that the exact behavior depends on the actual synchronization
	 * configuration of the transaction manager!
	 * <p>In general, use <code>PROPAGATION_SUPPORTS</code> with care! In particular, do
	 * not rely on <code>PROPAGATION_REQUIRED</code> or <code>PROPAGATION_REQUIRES_NEW</code>
	 * <i>within</i> a <code>PROPAGATION_SUPPORTS</code> scope (which may lead to
	 * synchronization conflicts at runtime). If such nesting is unavoidable, make sure
	 * to configure your transaction manager appropriately (typically switching to
	 * "synchronization on actual transaction").
	 * @see org.springframework.transaction.support.AbstractPlatformTransactionManager#setTransactionSynchronization
	 * @see org.springframework.transaction.support.AbstractPlatformTransactionManager#SYNCHRONIZATION_ON_ACTUAL_TRANSACTION
	 */
	int PROPAGATION_SUPPORTS = 1;

 

 int PROPAGATION_MANDATORY = 2;

 

/**
	 * Support a current transaction; throw an exception if no current transaction
	 * exists. Analogous to the EJB transaction attribute of the same name.
	 * <p>Note that transaction synchronization within a <code>PROPAGATION_MANDATORY</code>
	 * scope will always be driven by the surrounding transaction.
	 */
	int PROPAGATION_MANDATORY = 2;

 

 

int PROPAGATION_REQUIRES_NEW = 3;

 

 

/**
	 * Create a new transaction, suspending the current transaction if one exists.
	 * Analogous to the EJB transaction attribute of the same name.
	 * <p><b>NOTE:</b> Actual transaction suspension will not work out-of-the-box
	 * on all transaction managers. This in particular applies to
	 * {@link org.springframework.transaction.jta.JtaTransactionManager},
	 * which requires the <code>javax.transaction.TransactionManager</code>
	 * to be made available it to it (which is server-specific in standard J2EE).
	 * <p>A <code>PROPAGATION_REQUIRES_NEW</code> scope always defines its own
	 * transaction synchronizations. Existing synchronizations will be suspended
	 * and resumed appropriately.
	 * @see org.springframework.transaction.jta.JtaTransactionManager#setTransactionManager
	 */
	int PROPAGATION_REQUIRES_NEW = 3;

 

 int PROPAGATION_NOT_SUPPORTED = 4;

 

 int PROPAGATION_NEVER = 5;

 

 int PROPAGATION_NESTED = 6;

 

2、事务隔离度：

int ISOLATION_DEFAULT = -1;

 

/**
	 * Use the default isolation level of the underlying datastore.
	 * All other levels correspond to the JDBC isolation levels.
	 * @see java.sql.Connection
	 */
	int ISOLATION_DEFAULT = -1;

 

 

3、超时时间设置

 

int TIMEOUT_DEFAULT = -1;

 

 

/**
	 * Use the default timeout of the underlying transaction system,
	 * or none if timeouts are not supported. 
	 */
	int TIMEOUT_DEFAULT = -1;

 

 

4.+/- Exception配置

 

表示在方法内部抛出异常（可以是特定异常）时候，都提交或者回滚事务。