java - 如何使用 Spring JDBCTemplate 将 Blob 数据读入 String 对象

Question

我正在尝试使用 Spring JDBCTemplate 从表中读取 blob 数据。

List<Map<String, Object>> rows = jdbcTemplate.queryForList(sql);

for(Map<String, Object> row:rows){
    row.get("OPERATION_NAME");
    row.get("REQUEST_MESSAGE"); // this is blob
}

如何将 blob 读入 Java String 对象？

Answer 1

这似乎工作正常-

LobHandler lobHandler = new DefaultLobHandler();
List<FrontendData> frontEndDataList = jdbcTemplate.query(getResponseQuery(sessionId), new RowMapper() {
            @Override
            public Object mapRow(ResultSet rs, int rowNum) throws SQLException {
                // TODO Auto-generated method stub

                FrontendData frontEndData = new FrontendData();
                String operationName = rs.getString("OPERATION_NAME");
                frontEndData.setApiName(operationName);
                byte[] requestData = lobHandler.getBlobAsBytes(rs,"RESPONSE_MESSAGE");
                frontEndData.setResponse(new String(requestData));


                return frontEndData;
            }});