//数据回滚
@Transactional(rollbackFor=Exception.class)
public boolean deleteUser(String userIds) {
 int failflag = 0;
 if(!Constant.isEmpty(userIds)) {
    String[] userId = userIds.split(",");
    if(userId.length!=0) {
        for(int i=0;i<userId.length;i++) {
            if(!userDao.deleteUser(Integer.valueOf(userId[i]))) {
                failflag = failflag +1;
            }
        }
    }
}
  
if(failflag==0) {
    return true;
    }else {
        //数据回滚
        TransactionAspectSupport.currentTransactionStatus().setRollbackOnly(); 
        return false;
    }
}

// 异常回滚
@Transactional(rollbackFor = Exception.class)
public byte[] batchSignature(HttpServletRequest request) {
    try{
        ........
        ........
    
    }catch(Exception e){
        e.printStackTrace();
        TransactionAspectSupport.currentTransactionStatus().setRollbackOnly();
        return ResponseUtils.responseJsonResult(false);
    }

}