本事甚是喜欢JPA简单方便明了，所以在LDAP项目要加上MYSQL数据库，但LDAP没有与jpa连用的事物处理 是一个很头疼的事，网站空间，找到源码 发现里面只有2种对组合事物的支持：
ContextSourceAndDataSourceTransactionManager LDAP与JDBC的组合支持
ContextSourceAndHibernateTransactionManager LDAP与Hibernate的组合支持
如果使用这个 就是要说自己还要去封装jdbc 非常不爽，所以找到了个老外给的解决方法，自己写一个方法，美国空间，来完成LDAP与JPA的组事物，下面就是 那段代码
import org.springframework.ldap.core.ContextSource;import org.springframework.ldap.transaction.compensating.TempEntryRenamingStrategy;import org.springframework.ldap.transaction.compensating.manager.ContextSourceTransactionManagerDelegate;import org.springframework.orm.jpa.JpaTransactionManager;import org.springframework.transaction.TransactionDefinition;import org.springframework.transaction.TransactionException;import org.springframework.transaction.TransactionSuspensionNotSupportedException;import org.springframework.transaction.support.DefaultTransactionStatus;public class ContextSourceAndJpaTransactionManager extends JpaTransactionManager {private static final long serialVersionUID = 1L;private ContextSourceTransactionManagerDelegate ldapManagerDelegate =new ContextSourceTransactionManagerDelegate();/** * @see org.springframework.orm.jpa.JpaTransactionManager#isExistingTransaction(Object) */protected boolean isExistingTransaction(Object transaction){ContextSourceAndJpaTransactionObject actualTransactionObject =(ContextSourceAndJpaTransactionObject) transaction;return super.isExistingTransaction(actualTransactionObject.getJpaTransactionObject());}/** * @see org.springframework.orm.jpa.JpaTransactionManager#doGetTransaction() */protected Object doGetTransaction() throws TransactionException{Object dataSourceTransactionObject = super.doGetTransaction();Object contextSourceTransactionObject =ldapManagerDelegate.doGetTransaction();return new ContextSourceAndJpaTransactionObject(contextSourceTransactionObject, dataSourceTransactionObject);}/** * @see org.springframework.orm.jpa.JpaTransactionManager#doBegin(java.lang.Object, *org.springframework.transaction.TransactionDefinition) */protected void doBegin(Object transaction, TransactionDefinition definition)throws TransactionException{ContextSourceAndJpaTransactionObject actualTransactionObject =(ContextSourceAndJpaTransactionObject) transaction;super.doBegin(actualTransactionObject.getJpaTransactionObject(),definition);ldapManagerDelegate.doBegin(actualTransactionObject.getLdapTransactionObject(),definition);}/** * @see org.springframework.orm.jpa.JpaTransactionManager#doCleanupAfterCompletion(java.lang.Object) */protected void doCleanupAfterCompletion(Object transaction){ContextSourceAndJpaTransactionObject actualTransactionObject =(ContextSourceAndJpaTransactionObject) transaction;super.doCleanupAfterCompletion(actualTransactionObject.getJpaTransactionObject());ldapManagerDelegate.doCleanupAfterCompletion(actualTransactionObject.getLdapTransactionObject());}/** * @see org.springframework.orm.jpa.JpaTransactionManager#doCommit(org.springframework.transaction.support.DefaultTransactionStatus) */protected void doCommit(DefaultTransactionStatus status)throws TransactionException{ContextSourceAndJpaTransactionObject actualTransactionObject =(ContextSourceAndJpaTransactionObject) status.getTransaction();try{super.doCommit(new DefaultTransactionStatus(actualTransactionObject.getJpaTransactionObject(),status.isNewTransaction(),status.isNewSynchronization(),status.isReadOnly(),status.isDebug(),status.getSuspendedResources()));}catch (TransactionException ex){if (isRollbackOnCommitFailure()){logger.debug(“Failed to commit db resource, rethrowing”, ex);// If we are to rollback on commit failure, just rethrow the// exception – this will cause a rollback to be performed on// both resources.throw ex;}else{logger.warn(“Failed to commit and resource is rollbackOnCommit not set -“+ ” proceeding to commit ldap resource.”);}}ldapManagerDelegate.doCommit(new DefaultTransactionStatus(actualTransactionObject.getLdapTransactionObject(),status.isNewTransaction(),status.isNewSynchronization(),status.isReadOnly(),status.isDebug(),status.getSuspendedResources()));}/** * @see org.springframework.orm.jpa.JpaTransactionManager#doRollback(org.springframework.transaction.support.DefaultTransactionStatus) */protected void doRollback(DefaultTransactionStatus status) throws TransactionException{ContextSourceAndJpaTransactionObject actualTransactionObject =(ContextSourceAndJpaTransactionObject) status.getTransaction();super.doRollback(new DefaultTransactionStatus(actualTransactionObject.getJpaTransactionObject(),status.isNewTransaction(),status.isNewSynchronization(),status.isReadOnly(),status.isDebug(),status.getSuspendedResources()));ldapManagerDelegate.doRollback(new DefaultTransactionStatus(actualTransactionObject.getLdapTransactionObject(),status.isNewTransaction(),status.isNewSynchronization(),status.isReadOnly(),status.isDebug(),status.getSuspendedResources()));}public ContextSource getContextSource(){return ldapManagerDelegate.getContextSource();}public void setContextSource(ContextSource contextSource){ldapManagerDelegate.setContextSource(contextSource);}protected void setRenamingStrategy(TempEntryRenamingStrategy renamingStrategy){ldapManagerDelegate.setRenamingStrategy(renamingStrategy);}private final static class ContextSourceAndJpaTransactionObject{private Object ldapTransactionObject;private Object jpaTransactionObject;public ContextSourceAndJpaTransactionObject(Object ldapTransactionObject, Object jpaTransactionObject){this.ldapTransactionObject = ldapTransactionObject;this.jpaTransactionObject = jpaTransactionObject;}public Object getJpaTransactionObject(){return jpaTransactionObject;}public Object getLdapTransactionObject(){return ldapTransactionObject;}}/** * @see org.springframework.orm.jpa.JpaTransactionManager#doSuspend(java.lang.Object) */protected Object doSuspend(Object transaction) throws TransactionException{throw new TransactionSuspensionNotSupportedException(“Transaction manager [” + getClass().getName()+ “] does not support transaction suspension”);}/** * @see org.springframework.orm.jpa.JpaTransactionManager#doResume(java.lang.Object, java.lang.Object) */protected void doResume(Object transaction, Object suspendedResources)throws TransactionException{throw new TransactionSuspensionNotSupportedException(“Transaction manager [” + getClass().getName()+ “] does not support transaction suspension”);}/** * @see org.springframework.orm.jpa.JpaTransactionManager#doSetRollbackOnly(org.springframework.transaction.support.DefaultTransactionStatus) */@Overrideprotected void doSetRollbackOnly(DefaultTransactionStatus status){super.doSetRollbackOnly(new DefaultTransactionStatus(((ContextSourceAndJpaTransactionObject)status.getTransaction()).getJpaTransactionObject(),status.isNewTransaction(),status.isNewSynchronization(),status.isReadOnly(),status.isDebug(),status.getSuspendedResources()));}}
自然而然不想去因为别人的努力而努力，
