CV篇-How to use 编程式事务

声明：我用的lombok

@RequiredArgsConstructor(onConstructor_ = {@Autowired})

因此不用自己加注解注入

步骤1:

import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.TransactionDefinition;
import org.springframework.transaction.TransactionStatus;
import org.springframework.transaction.support.DefaultTransactionDefinition;

注入：

private final PlatformTransactionManager transactionManager;

步骤2:

TransactionDefinition def = new DefaultTransactionDefinition();
TransactionStatus status = transactionManager.getTransaction(def);

默认RR 如果想用RC

DefaultTransactionDefinition def = new DefaultTransactionDefinition();
def.setIsolationLevel(TransactionDefinition.ISOLATION_READ_COMMITTED);
TransactionStatus status = transactionManager.getTransaction(def);

步骤3:

try {

        // 业务逻辑

 

      // 业务执行后 提交事务      

   transactionManager.commit(status);
} catch (Exception e) {

         // 回滚

        transactionManager.roollback(status);

        // 抛出异常 打error等

}