@Transactional失效：捕获异常未抛出

失效场景：

    @Transactional(rollbackFor = Exception.class)
    public Map<String, Object> saveEngineer() {
    Map<String,Object> map = Maps.newHashMap();
        try {
                .........
            } catch (Exception e) {
                e.printStackTrace();
            }
        return map;  
    }

解决方法1：事务设置手动回滚

    @Transactional(rollbackFor = Exception.class)
    public Map<String, Object> saveEngineer() {
    Map<String,Object> map = Maps.newHashMap();
        try {
                .........
            } catch (Exception e) {
                e.printStackTrace();
                //事务设置手动回滚
                TransactionAspectSupport.currentTransactionStatus().setRollbackOnly();
            }
        return map;  
    }

解决方法2：捕获异常并将异常抛出

    @Transactional(rollbackFor = Exception.class)
    public Map<String, Object> saveEngineer() {
    Map<String,Object> map = Maps.newHashMap();
        try {
                .........
            } catch (Exception e) {
                log.error(e.getMessage(),e);
                //将异常抛出
                throw new ServerException(ExceptionCode.SERVER_INNER_ERROR.getExceptionCode(),e.getMessage());
            }
        return map;  
    }