异常：可调用语句未返回任何值

Question

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“可调用语句没有返回任何值”。当在 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。谁能帮我理解我在哪里犯了错误？以下是存储过程在数据库中的外观。

   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;           

Answer 1

您没有使用结果参数，即

{?= call <procedure-name>[(<arg1>,<arg2>, ...)]} 

但如果您要使用该表单，那么您的存储过程可能会return a cursor。