存储空值

Question

我正在研究angularjs和Spring框架。我试图将数据库中的数据导入我的form.t工作正常。现在我再次保存相同的数据而不做任何修改...它向数据库发送空值。我认为模型没有更新，但这与我用来将数据首先添加到我的表单中的模型相同。那么，有人可以帮帮我吗？

我的HTML：

<div class="span12">Contract Duration [?]</div>
<div class="span3" height="20px"></div>
<div class="span4"><input id="duration" type="text"   value={{data1.contractDuration}}
    placeholder="enter duration in years" ng-model="param.contractDuration"
    name="amount" /></div>
</div>
</div>


<div class="landingHeadeLabel row-fluid subdiv2"><label
    class=" subHead">&nbsp;&nbsp;&nbsp;&nbsp;Criteria
for Auto Status Change based on Amendment in CMS</label></div>
<div class="row-fluid supersubDiv2">
<div class="row-fluid marginDiv2">
<div class="span12">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sum of
Amendments [?]</div>
<div class="span3"><select class="select"
    ng-model="param.sumOfAmendmentsCurrency"
    ng-options="curItr for curItr in param.currencyList"><option value="">{{data1.sumOfAmendmentsCurrency}}</option>
</select></div>
<div class="span4"><input id="amendmentsum" type="text"  value={{data1.sumOfAmendments}}
    placeholder="enter value" ng-model="param.sumOfAmendments"
    name="amount" /></div>
<div class="span4" >
<h4 class="note">Note:</br>
Status of FCM Contract for which Contract Value bifurcation is not done
will be changed to Requires Resubmission triggered by Amendment in CMS
contract if below criteria are met on amendment.</h4>
</div>
<div class="span12">
<p>No. of Amendments [?]</p>
</div>

<div class="span4"><input id="amendments" type="text"  value={{data1.numberOfAmendments}}
    placeholder="enter duration" ng-model="param.numberOfAmendments"
    name="amount" /></div>
</div>

</div>
<div align="right" class="finalDiv">
<a href="" ng-click="cancelCntrctDtls()">Cancel</a> <input type="button"
    class="btn saveButton" 
    value="Save Configuration" ng-click="saveCntrctDtls()"></div>
</div>
</div>


@RequestMapping(value = "/savecntrctdtls", method=RequestMethod.POST,produces="application/json")
    public @ResponseBody ParamConfigDtlsDto saveDetails(@RequestBody ParamConfigDtlsDto objParamConfigDto)throws Exception{

        LOG.info("Para Config Controller | Save Details");
        System.out.println(objParamConfigDto);
        ParamConfigDtlsDto validErrorFlag;
        ParamConfigDtlsDto paramConfigDtls=new ParamConfigDtlsDto();
        LOG.debug("Para Config Controller | DTO "+objParamConfigDto);

        LOG.info("ParamConfigSavController| save action invoked ");

        validErrorFlag=paramConfigSaveService.validateParamDetails(objParamConfigDto);

        if(!validErrorFlag.getValidateError())
        {
            paramConfigDtls=paramConfigSaveService.savDetails(objParamConfigDto);

        if(null==objParamConfigDto.getErrorMessage())
            LOG.info("ParamConfigSavController| save action successfull ");
        else
            LOG.info("ParamConfigSavController| save action unsuccessfull | Procedure Error.");
        }

        else
        {
            LOG.info("Validation Error || Please check if all entries are filled and in Proper format");
        }
        return paramConfigDtls;
    }

MY DAO：

@Override
    public void savDetails(ParamConfigDtlsDto data) throws SQLException{

        JdbcTemplate jdbcTemplate;

        String iouName=data.getIouName();
        jdbcTemplate = new JdbcTemplate(dataSource);

        int iouNameList = jdbcTemplate.queryForInt(SQLQuery.fetchIouId,new Object[]{iouName});
        data.setIouID(iouNameList);


        this.jdbcCall =  new SimpleJdbcCall(dataSource).withProcedureName(DBConstants.FCM_PARA_CONF_INS_PRC);
        jdbcTemplate = new JdbcTemplate(dataSource);

        String userId = (String)SecurityContextHolder.getContext().getAuthentication().getPrincipal();

        Map<String,Object> args=new HashMap<String,Object>(); 
        args.put(DBConstants.PI_IOU_ID,data.getIouID());
        args.put(DBConstants.PI_CONTRACT_VALUE,data.getContractValue());
        args.put(DBConstants.PI_CONTRACT_DURATION,data.getContractDuration());
        args.put(DBConstants.PI_CURRENCY_ID,data.getContractCurrency());
        args.put(DBConstants.PI_DURATION_UNIT,"YEARS");                             /*As per requirement,default value of contract duration is in Years*/
        args.put(DBConstants.PI_AMENDMENT_SUM_AMT,data.getSumOfAmendments());
        args.put(DBConstants.PI_AMENDMENT_COUNT,data.getNumberOfAmendments());
        args.put(DBConstants.PI_AMENDMENT_CURRENCY_ID,data.getSumOfAmendmentsCurrency());
        args.put(DBConstants.PROC_PI_USER_ID,userId);

        Map<String,Object> out=jdbcCall.execute(args); 

        ParamConfigDtlsDto paramConfigDtlsDto=new ParamConfigDtlsDto(); 
        paramConfigDtlsDto.setErrorCode((String)out.get(DBConstants.PO_ERROR_CODE));
        paramConfigDtlsDto.setErrorMessage((String)out.get(DBConstants.PO_ERROR_MSG));


    }
}

用于保存数据的MY客户端脚本：

$http.post('rest/savecntrctdtls',$scope.param).success(function(data){
                $scope.errsuccess=true;

            }).error(function(data){
                alert("error while saving data | Flag returned is");
            });