我编写了一个java代码来调用一个返回一些数据的存储过程。以下是代码 -
CallableStatement callableStatement = null;
List<OutputDTO> outputDTOList = new LinkedList<>();
ResultSet rs = null;
String query = "{call Get_DailyCampaignReachReport (?,?,?,?,?,?,?,?,?)}";
try {
callableStatement = connMan.getReportingDbConnection().prepareCall(query);
Integer[] data = inDTO.getCampaignId().toArray(new Integer[inDTO.getCampaignId().size()]);
callableStatement.setDate(1, new Date(inDTO.getStartDate().toDate().getTime()));
callableStatement.setDate(2, new Date(inDTO.getEndDate().toDate().getTime()));
callableStatement.setArray(3, connMan.getReportingDbConnection().createArrayOf("integer", data));
callableStatement.setInt(4, inDTO.getNetworkId());
callableStatement.registerOutParameter(5, java.sql.Types.DATE);
callableStatement.registerOutParameter(6, java.sql.Types.INTEGER);
callableStatement.registerOutParameter(7, java.sql.Types.INTEGER);
callableStatement.registerOutParameter(8, java.sql.Types.BIGINT);
callableStatement.registerOutParameter(9, java.sql.Types.BIGINT);
boolean results = callableStatement.execute();
while (results) {
rs = callableStatement.getResultSet();
while(rs.next()){
OutputDTO outputDTO = new OutputDTO();
outputDTO.setDate(new DateTime(rs.getDate(1).getTime()));
outputDTO.setCampaignId(rs.getInt(2));
outputDTO.setNetworkId(rs.getInt(3));
outputDTO.setUniques(rs.getInt(4));
outputDTO.setTotal(rs.getInt(5));
outputDTOList.add(outputDTO);
}
results = callableStatement.getMoreResults();
}
collector.setOutputList(outputDTOList);
} catch (SQLException e) {
throw new InternalErrorException("runDayReport {" + query + "} - ", e);
} finally {
try {
if (null != rs) {
rs.close();
}
if (null != callableStatement) {
callableStatement.close();
}
} catch (SQLException ee) {
throw new InternalErrorException("Free Resources : runDayReport {"
+ query + "} - " + ee);
}
}
“Get_DailyCampaignReachReport”是存储过程的名称。现在，当我执行此代码时，我得到一个异常“Callable语句没有返回任何值。”在callablestatement上调用execute方法时会发生这种情况。但我无法理解为什么会这样。任何人都可以帮我理解我犯错误的地方吗？以下是存储过程在DB中的显示方式。
Schema | Name | Result data type | Argument data types | Type | Volatility | Owner | Language | Source code | Description
--------+------------------------------+------------------+---------------------------- ------------------------------------------------------------------------------------------------------------------------------------------------------------+--------+------------+----------+----------+------------------------------------------------------------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------- ------------------+-------------
public | get_dailycampaignreachreport | SETOF record | start_date date, end_date date, p_campaign_id integer[], p_network_id integer, OUT sqldate date, OUT campaign_id integer, OUT network_id integer, OUT uniques bigint, OUT total bigint | normal | volatile | postgres | plpgsql | +|
| | | | | | | | DECLARE +|
| | | | | | | | where_campaign_id text; +|
| | | | | | | | in_values varchar default ''; +|
| | | | | | | | BEGIN +|
| | | | | | | | IF p_campaign_id NOTNULL THEN +|
| | | | | | | | FOR i IN 1..array_upper(p_campaign_id, 1) LOOP +|
| | | | | | | | in_values := in_values || p_campaign_id[i] || ','; +|
| | | | | | | | END LOOP; +|
| | | | | | | | in_values := substring(in_values FROM 1 FOR character_length(in_values) - 1); +|
| | | | | | | | where_campaign_id := ' campaign_id IN (' || in_values || ')' ; +|
| | | | | | | | END IF; +|
| | | | | | | | RETURN QUERY EXECUTE 'SELECT sqldate,campaign_id,network_id,users,total FROM campaign_uniques_daily WHERE sqldate BETWEEN ' || quote_literal(start_date) || ' AND ' || quote_literal(end_date) || ' AND network_id = ' || p_network_id || ' AND ' || where_campaign_id || ' ';+|
| | | | | | | | END;
答案 0 :(得分：1)