Question

我有一个问题，假设我最初说过100条记录，并且我在UI上将它们显示为用户列表。现在，我已经通过单击＆＃34;停用＆＃34;来禁用号码用户。对每一条记录放置的按钮，然后我捕获所有＆＃34;停用的＆＃34;列表中的用户并将其发送到DAO层。[停用用户的逻辑只是设置＆＃39; isDeleted＆＃39;标志为true，iesoft删除所以它就像我正在更新我已放入列表中的Ids的多个记录一样好，有一个简单的解决方案，写一个for循环 - ＆gt;遍历列表 - ＆gt;并且为每个记录触发一个查询，将isDeleted标志更新为true，但如果我说一次要删除5000条记录，那么它是不可行的解决方案。我一次听到并实现了＆＃34;插入＆＃34; 多个记录的batchUpdate概念，但我不明白如何使用批量更新仅在一次数据库调用时更新多个记录，请help，插入的批量更新代码如下，

 private static final String INSERT_USER_PERMISSION =
            "INSERT INTO permission_transaction(permissionId,userId,isDeleted) "
          + "VALUES(?,?,?)";

 @Transactional
    public void addPermission(final UserVO userVo, final List<PermissionVO> permissionVoList)
            throws Exception {
        logger.info("Adding user permission, for userId: "+userVo.getUserId());

        try {
            jdbc.batchUpdate(INSERT_USER_PERMISSION, new BatchPreparedStatementSetter() {
                @Override
                public void setValues(PreparedStatement ps, int i) throws SQLException {

                    PermissionVO permissionVo = permissionVoList.get(i);
                    ps.setInt(1, permissionVo.getPermissionId());
                    ps.setInt(2, userVo.getUserId());
                    ps.setBoolean(3, false);
                }
                @Override
                public int getBatchSize() {
                    return permissionVoList.size();
                }
            });
            logger.info("Exiting addPermission, for userId: "+userVo.getUserId());
        }catch (Exception e) {
            logger.error("Error in adding user permission: " + e.getMessage(), e);
            throw e;
        }

    }

Answer 1

嘿，我找到了解决方案，这就是我所做的，

  private static final String UPDATE_CLIENT_OWNER = 
            "UPDATE clientowner SET "
          + "clientOwnerName=?,"
          + "clientOwnerPhone=?,"
          + "clientOwnerEmail=?,"
          + "lastUpdatedOn=NOW() "
          + "WHERE clientOwnerId=?";
 @Transactional
    public void updateClientOwner(int clientId, List<ClientOwnerVO> clientOwnerVoList) throws Exception {
        logger.info("Updating client Owner(s)");
        try{
           int[] count = jdbc.batchUpdate(UPDATE_CLIENT_OWNER, new BatchPreparedStatementSetter() {
                @Override
                public void setValues(PreparedStatement ps, int i) throws SQLException {

                    ClientOwnerVO clientOwnerVO = clientOwnerVoList.get(i);
                    ps.setString(1, clientOwnerVO.getClientOwnerName());
                    ps.setString(2, VariableEncryption.encrypt(clientOwnerVO.getClientOwnerPhone(), clientOwnerVO.getCreatedOn()));
                    ps.setString(3, VariableEncryption.encrypt(clientOwnerVO.getClientOwnerEmail(), clientOwnerVO.getCreatedOn()));
                    ps.setInt(4, clientOwnerVO.getClientOwnerID());

                }
                @Override
                public int getBatchSize() {
                    return clientOwnerVoList.size();
                }
            });
           logger.info("Exiting After successfully updating "+count.toString()+" client owners");


        }catch (Exception e) {
            logger.error("Error in updating client owners: " + e.getMessage(), e);
            throw e;
        }

批量更新，用于使用mysql更新spring mvc中的多个记录

1 个答案: