springJDBC的几种查询数据库方法
1.RowCallbackHandler
@Override
public List<FilingFCSegmentCorrection> retrieveFCSegmentCorrections(Integer year,String ruleTariffCode,
String carrierCode) {
final Map<String,Object> sqlParamaterMap= new HashMap<String,Object>();
sqlParamaterMap.putAll(setTCToParaMap(ruleTariffCode,carrierCode));
sqlParamaterMap.put("year",year);
final List<FilingFCSegmentCorrection> fcList=new ArrayList<FilingFCSegmentCorrection>();
nameJdbcTemplate.query(sqlGetFCs,sqlParamaterMap,new RowCallbackHandler() {
@Override
public void processRow(ResultSet rs) throws SQLException {
final FilingFCSegmentCorrection fc=new FilingFCSegmentCorrection();
fc.setCarrierCode(rs.getString("CXR_CD"));
fc.setRuleTariffCode(rs.getString("RULE_TAR_CD"));
fc.setInEffYr(rs.getInt("IN_EFF_YR"));
fc.setRuleCode(rs.getString("RULE_CD"));
fc.setSeqNo((Integer) rs.getObject("SEQ_NO"));
fc.setZoneNO(rs.getInt("ZONE_NO"));
fcList.add(fc);
}
});
return fcList;
}
2.RowMapper
@Override
public List<FilingFCSegmentCorrection> retrieveFCSegmentCorrections(Integer year,String ruleTariffCode,
String carrierCode) {
final Map<String ,Object> sqlParamaterMap=setTCToParaMap(ruleTariffCode,carrierCode);
sqlParamaterMap.put("year",year);
final RowMapper<FilingFCSegmentCorrection> rowMapper=new RowMapper<FilingFCSegmentCorrection>() {
@Override
public FilingFCSegmentCorrection mapRow(ResultSet result, int arg1) throws SQLException {
final FilingFCSegmentCorrection fc=new FilingFCSegmentCorrection();
setCommonFieldsForFc(result,fc);
fc.setSeqNo((Integer) result.getObject("SEQ_NO"));
fc.setZoneNO(result.getInt("ZONE_NO"));
return fc;
}
};
return nameJdbcTemplate.query(sqlGetFCs,sqlParamaterMap,rowMapper);
}
sqlGetFCs：
SELECT IN_EFF_YR,CXR_CD,RULE_TAR_CD,RULE_CD,SEQ_NO ,ZONE_NO FROM FC_SEG_CRRN
WHERE IN_EFF_YR=:year and RULE_TAR_CD= :tariff and CXR_CD= :carry
3.ResultSetExtractor
@Override
public List<String> getRuleCodes(final List<Integer> batchSgList) {
final MapSqlParameterSource msps = new MapSqlParameterSource();
msps.addValue(FilingConstants.BATCHSGS, batchSgList);
final List<String> ruleCodeSet = new ArrayList<String>();
return namedJdbcTemplate.query(sqlGetRuleCodes, msps,
new ResultSetExtractor<List<String>>() {
@Override
public List<String> extractData(final ResultSet arg0)
throws SQLException, DataAccessException {
while (arg0.next()) {
ruleCodeSet.add(arg0.getString("RULE_CD"));
}
return ruleCodeSet;
}
});
}
附dao类：
public
abstract class DDSDAO {
@Autowired
protected transient NamedParameterJdbcTemplate nameJdbcTemplate;
protected JdbcTemplate getJdbcTemplate() {
return (JdbcTemplate) this.nameJdbcTemplate.getJdbcOperations();
}
}
4.getJdbcOperations queryForList
selectPrimaryKey:
SELECT distinct
A.WORK_UNIT_OWN_ORG_CD wuOwnOrgCode
,A.WORK_UNIT_CRTE_DT wuCreatDateTime
,A.WORK_UNIT_ID_NO wuIdNumber
,A.ERR_WARN_SCOP_TYPE_CD errWarnScopeTypeCode
,A.REL_NO releaseNumber
,A.ERR_TYPE_CD errTypeCode
FROM ${ddsSchema}WORK_UNIT_ERR_WARN A INNER
JOIN ${ddsSchema}WU_VLDTN_PRCS_TYPE B
ON A.WU_VLDTN_PRCS_TYPE_CD = B.WU_VLDTN_PRCS_TYPE_CD
WHERE A.WU_VLDTN_PRCS_TYPE_CD = ?
AND A.FILG_GRP_NO = ?
AND A.WORK_UNIT_OWN_ORG_CD = ?
AND A.WORK_UNIT_CRTE_DT = ?
AND A.WORK_UNIT_ID_NO = ?
final Object[] parameters = new Object[] {processCode, filingGroupNum, wuKeyInfo.getWuOwnOrgCode(), wuKeyInfo.getWuCreateDt(), wuKeyInfo.getWuIdNo()};
final List<Map<String, Object>> priKeyMapList = namedJdbcTemplate.getJdbcOperations().queryForList(selectPrimaryKey, parameters);
=========================================
附另外查询方法：queryForList，queryForObject
final String createId = namedJdbcTemplate.query(sqlSelectCategoryLock,
lockRequest.getSqlParamaterMap(),
new ResultSetExtractor<String>() {
@Override
public String extractData(final ResultSet rs)
throws SQLException, DataAccessException {
if (rs.next()) {
return rs.getString(FilingConstants.CREATE_ID_COLUMN);
} else {
return null;
}
}
});
也可以写一个类继承ResultSetExtractor，覆写extractData（）方法，然后把这个类代替new ResultSetExtractor（）放进query（）方法里。
@Override
public List<String> retrieveBtchTypeList(final WorkUnitKeyInfo wuKeyInfo) {
final Map<String, Object> sqlParamaterMap = new HashMap<String, Object>();
sqlParamaterMap.put(DDSConstants.WORK_UNIT_OWN_ORG_CD,wuKeyInfo.getWuOwnOrgCode());
sqlParamaterMap.put(DDSConstants.WORK_UNIT_CRTE_DT, wuKeyInfo.getWuCreateDt());
sqlParamaterMap.put(DDSConstants.WORK_UNIT_ID_NO, wuKeyInfo.getWuIdNo());
return namedJdbcTemplate.queryForList(sqlBtchTypeList, sqlParamaterMap,String.class);
}
====(sqlBtchTypeList:SELECT DISTINCT WORK_UNIT_BTCH_TYPE_CD ${ddsSchema}WORK_UNIT_SUMRY WHERE WORK_UNIT_OWN_ORG_CD = :wuOwnOrgCode AND WORK_UNIT_CRTE_DT = :wuCreatDateTime )
public Integer comparesubsRec3TS(final Integer wuSg, final String appTypeCode){
final Map<String, Object> updateWuStatusMap = new HashMap<String, Object>();
updateWuStatusMap.put(DDSConstants.WUSG, wuSg);
updateWuStatusMap.put(DDSConstants.APPTYPECODE, appTypeCode);
return namedJdbcTemplate.queryForObject(sqlSubsRec3TSCompare,
updateWuStatusMap,Integer.class);
}
@Override
（totFareBatchCntSql：SELECT BATCH_SG, SUM(CNT) AS B_CNT FROM CTR GROUP BY BATCH_SG）
public Map<Integer,Integer> getCountByBatch(final FilingBatchInfo fbInfo) {
final Map<Integer,Integer> resMap = new HashMap<Integer, Integer>();
final MapSqlParameterSource msps = new MapSqlParameterSource();
if(fbInfo.isFareBatchesExists()) {
msps.addValue(FilingConstants.BATCHSGS, fbInfo.getFareBatchSgList());
namedJdbcTemplate.query(totFareBatchCntSql, msps,
new ResultSetExtractor<Map<Integer,Integer>>() {
@Override
public Map<Integer,Integer> extractData(final ResultSet arg0)
throws SQLException, DataAccessException {
while (arg0.next()) {
resMap.put((Integer)arg0.getObject(BATCH_SG), (Integer)arg0.getObject(B_CNT));
}
return resMap;
}
});
}
queryForMap
final String sqlLock = (String)applicationContext.getBean("sqlLock");
final Map<String,Object> actResult = namedJdbcTemplate.getJdbcOperations().queryForMap(sqlLock);
Assert.assertTrue(BOOLEAN_ASSERTION, FilingJUnitUtil.isObjectValueEqual(userId,actResult.get(FilingConstants.CREATE_ID_COLUMN).toString().trim()));
附：sqlLock：
select create_id from ${parSchema}ftnt_appl_lock_cat
where cxr_cd = 'ATC' and
ftnt_tar_cd = 'ATPPCOL' and
ftnt_cd = 'AB' and
cat_no = 1
queryForList
final List<?> actResult = namedJdbcTemplate.getJdbcOperations().queryForList(sqlUnlock);
Assert.assertTrue(BOOLEAN_ASSERTION, FilingJUnitUtil.isObjectValueEqual(0,actResult.size()));
附：sqlUnlock：
select create_id from ${parSchema}ftnt_appl_lock_cat
where cxr_cd = 'ATP' and
ftnt_tar_cd = 'ATPPCOL' and
ftnt_cd = 'AB' and
cat_no = 1
====
List<Map<String,Object>> lockList
= namedJdbcTemplate.getJdbcOperations()
.queryForList(sqlTCRCatLock, carrierCode, tariffCode);
附：sqlTCRCatLock：
SELECT cxr_cd, rule_tar_cd, rule_cd
FROM
PARGRP.rule_appl_lock_cat
WHERE cxr_cd = ? AND rule_tar_cd = ? (在有很多条数据的时候用到)
如果只有一条数据则用queryForMap
Map<String, Object> actlResult = namedJdbcTemplate.getJdbcOperations().queryForMap(selectFCGovtInsert);
selectFCGovtInsert:
SELECT * FROM ${gfsSchema}FC_GOVT_FILG_CRRN WHERE IN_EFF_YR=2014 AND CXR_CD='AA' AND RULE_TAR_CD ='AATCP' AND RULE_CD='A' AND FC_CD ='B' AND SEQ_NO =2 AND SEG_ORD_NO=-1
==================================================================
final List<String> actualStr = namedJdbcTemplate.getJdbcOperations().queryForList(sqlForJust, String.class);
sqlForJust= SELECT ERR_MSG_DESC_TEXT FROM ${ddsSchema}WORK_UNIT_ERR_WARN WHERE WORK_UNIT_OWN_ORG_CD = 'ATP' AND WORK_UNIT_ID_NO=9 AND REL_NO =1