java 在json中获取空响应

我有一个现有的项目中，我必须添加过滤器“dealername”。我已经实现了它，但其他值给响应为空。
控制器API i具有-

@PostMapping("/getJobcardDetails")
    @ResponseBody
    @LogExecution
    public ResponseEntity<?> getJobcardDetails(@RequestBody  DealerRequest request) {
        try {
            Object response = null;
            response = service.getJobcardDetails(request);
            if (response != null) {
                return new ResponseEntity<>(
                        new Response(Constants.SUCCESS_CODE, Constants.SUCCESS, Constants.DATA_FOUND, response),
                        HttpStatus.OK);
            } else {
                return new ResponseEntity<>(new Response(Constants.SUCCESS_CODE, Constants.SUCCESS,
                        Constants.NO_DATA_FOUND, Constants.SUCCESS), HttpStatus.OK);
            }
        } catch (Exception e) {
            logger.error("Exception in getDistinctValues(): ", e);
            return new ResponseEntity<>(new Response(Constants.ERROR_CODE, Constants.ERROR, Constants.INTERNAL_SERVER,
                    Constants.INTERNAL_SERVER), HttpStatus.INTERNAL_SERVER_ERROR);
        }

    }

服务实现，其中我添加了筛选器-

public Object getJobcardDetails(DealerRequest request) throws Exception {
        
        String clause = " where jc.dealer_code = dm.code ";
        String AND_CLAUSE = " and ";
        String WHERE_CLAUSE = " where ";
        try {
            if (!TextUtils.isEmpty(request.getCity())) {
                if (!clause.isEmpty()) {
                    clause += AND_CLAUSE;
                } else {
                    clause += WHERE_CLAUSE;
                }
                clause += " dm.city = '" + request.getCity() + "'";
            }
            if (!TextUtils.isEmpty(request.getRegion())) {
                if (!clause.isEmpty()) {
                    clause += AND_CLAUSE;
                } else {
                    clause += WHERE_CLAUSE;
                }
                clause += " dm.region = '" +request.getRegion()+ "'";
            }
            if (!TextUtils.isEmpty(request.getState())) {
                if (!clause.isEmpty()) {
                    clause += AND_CLAUSE;
                } else {
                    clause += WHERE_CLAUSE;
                }
                clause += "dm.state = '" +request.getState()+ "'";
            }
            if (!TextUtils.isEmpty(request.getType())) {
                if (!clause.isEmpty()) {
                    clause += AND_CLAUSE;
                } else {
                    clause += WHERE_CLAUSE;
                }
                clause += " dm.type = '" +request.getType()+ "'";
            }
            if (!TextUtils.isEmpty(request.getJcType())) {
                if (!clause.isEmpty()) {
                    clause += AND_CLAUSE;
                } else {
                    clause += WHERE_CLAUSE;
                }
                clause += " jc.js_type_desc = '" +request.getJcType()+ "'";
            }
            if (!TextUtils.isEmpty(request.getdealername())) {
                if (!clause.isEmpty()) {
                    clause += AND_CLAUSE;
                } else {
                    clause += WHERE_CLAUSE;
                }
                clause += " jc.dealername = '" +request.getdealername()+ "'";
            }
        } catch (Exception e) {
            logger.error("Exception in getDealer Details(): ", e);  
        }
        
        return dao.getJobcardDetails(clause);
    

    }

}

dao实施-

@Override
    @Cacheable(value="getJobcardDetails",key = "#clause")
    public Object getJobcardDetails(String clause) throws Exception {
        String sql = QueryConstant.JOBCARD_DETAILS;
        sql = sql.replaceAll("#clause", clause);
        RowMapper<DealerResponse> rowMapper = new BeanPropertyRowMapper<DealerResponse>(DealerResponse.class);
        List<DealerResponse> list= jdbcTemplate.query(sql, rowMapper);
        if (list != null && list.size() > 0) {
            
            return list;
        }
        return null;
    }

'query constant'类，我在其中编写了从表中获取数据的查询-

public static final String JOBCARD_DETAILS = "select jc.*, dm.lat,dm.lng,l.icon as icon , l.color as color \r\n"
            +   "from jobcarddata jc   left outer join \r\n"
            + "dealer_mst dm on jc.dealer_code = dm.code left outer join    lookup l \r\n"
            + "on  dm.type = l.subcategory  #clause";

我从请求类中调用的json

{
    "region" :  "",
    "city" : "",
    "state" : "",
    "type" : "",
    "jctype" : "",
    "dealername" : ""

}

React变得无效-

"code": 1,
    "status": "SUCCESS",
    "statusMessage": "data found",
    "response": [
        {
            "name": null,
            "code": null,
            "address": null,
            "pincode": null,
            "city": null,
            "state": null,
            "region": null,
            "type": null,
            "contact_number": null,
            "lat": "26.7113",
            "lng": "80.8403",
            "status": "Active",
            "creation_date": null,
            "opentime": null,
            "closetime": null,
            "uniqueKey": null,
            "icon": "data:image/png;base64,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",
            "color": "Blue",
            "jccount": null,
            "color_code": null,
            "oem": null,
            "jcNo": "4003143728",
            "jcopenDate": "20210714",
            "dealerName": "Narveda Motors",
            "dealerCode": "1S1212",
            "jcType": "ZUNR",
            "jsTypeDesc": "Running Repair",
            "jsStatus": "H065",
            "jsDesc": ""
        }

java 在json中获取空响应

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