如何在 spring jdbc 中使用 IN 子句

Question

How to use IN clause in spring jdbc template or how to filter out all values which are not matching to string when I query db I can get all values using stream API is it possible to skip add only financialTx.getActivationCode() matches to VPMA and OLAM

Map<String, Object> params = new HashMap<String, Object>();
        List<String> activationCode = new ArrayList<String>();
        activationCode.add("VPMA");
        activationCode.add("OLAM");
        Map activationCodes = Collections.singletonMap(activationCode, "activationCode");
        params.put("userEmail", userEmail);
        params.put("activationCode", activationCodes);
        LocalDateTime time = asOf.minusDays(psValidationDays);
        params.put("time", Timestamp.valueOf(time));
        String sql =
                "select "
                        + "fx.date_created,"
                        + "fx.balance,"
                        + "au.email,"
                        + "l.code "
                        + "from financial_tx fx "
                        + "inner join altpay_user au on "
                        + "au.id = fx.altpay_user_id "
                        + "inner join lookup l on "
                        + "l.id = fx.tx_type_id "
                        + "where au.email in (:userEmail) and "
                        + "l.code in (:activationCode) and "
                        + "(fx.date_created  >= :time) order by date_created desc";
        List<FinancialTx> financialTxList =
                namedParameterJdbcTemplate.query(sql, params, financialTxrowMapper);
        /*  final Iterator<FinancialTx> iterator = financialTxList.iterator();
           while (iterator.hasNext()) {
                    final FinancialTx financialTx = iterator.next();
                    if (financialTx.getActivationCode().equals("VPMA")) {
                        iterator.remove();
                    }
        */
        return financialTxList;
    }

Answer 1

In your params map you can make the values of type Collection so they get searched using IN . Looking at your SQL you want to do this for userEmail and activationCode . So you would set them up in params like this:

params.put("userEmail", Lists.newArrayList(userEmail));//create List using Google guava, feel free to use whatever
params.put("activationCode", activationCode);//i.e. no need to add to a Map

Bear in mind you haven't instantiated userEmail is not instantiated in your snippet of code so I assume it is accessed from somewhere else.