SpringMVC接收对象数组+MyBatis批量处理

Controller类代码如下：

@ResponseBody
    @RequestMapping(value="/ecg/addEcgs", method=RequestMethod.POST)
    public Map<String, Object> addEcgs(@RequestBody List<EcgBean> ecgBeans){
        Map<String, Object> modelMap = new HashMap<String, Object>();
        ResponseMsg responseMsg = new ResponseMsg();
        System.out.println(ecgBeans.toString());
        if (null == ecgBeans || ecgBeans.size() == 0) {
            responseMsg.set(2, "参数校验失败", null);
            modelMap.put("ResponseMsg", responseMsg);
            return modelMap;
        }
        if(ecgService.addEcgs(ecgBeans)){
            responseMsg.set(1, "批量添加成功", null);
            modelMap.put("ResponseMsg", responseMsg);
        } else {
            responseMsg.set(2, "批量添加失败", null);
            modelMap.put("ResponseMsg", responseMsg);
        }
        
        return modelMap;
    }

Ajax代码如下：

<script type="text/javascript">
        $(document).ready(function(){
            var arr = new Array();
            var data = {
                oldPeopleId:1,
                agencyId:1,
                ecg:1,
                inspectTime:111,
                inspectStaffId:1,
                entryTime:111,
                entryStaffId:1,
                scene:1,
                approvalStatus:1,
                createTime:111,
                updateTime:111,
                reserved:1
                    
            };
            arr.push(data);
            arr.push(data);
            alert(JSON.stringify(arr));
            $.ajax({  
                type: 'POST',  
                url: 'singndata/ecg/addEcgs',  
                contentType: 'application/json;charset=utf-8',
                dataType: 'json',  
                data: JSON.stringify(arr),  
                success: function(data){
                    console.debug(data);
                },  
                error: function(err){  
                    console.debug(data); 
                }  
            });  
            
        });

    </script>

MyBatis配置文件SQL定义如下：

   <insert id="addEcgs" parameterType="java.util.List">
        INSERT INTO lefuyun.tbl_ecg (
            oldPeopleId, 
            agencyId, 
            ecg, 
            inspectTime, 
            inspectStaffId, 
            entryTime, 
            entryStaffId, 
            scene, 
            approvalStatus, 
            createTime, 
            updateTime, 
            reserved
        ) VALUES 
        <foreach collection="list" item="item" index="index" separator=",">
            (
                #{item.oldPeopleId,jdbcType=NUMERIC},
                #{item.agencyId,jdbcType=NUMERIC}, 
                #{item.ecg,jdbcType=VARCHAR}, 
                #{item.inspectTime,jdbcType=NUMERIC}, 
                #{item.inspectStaffId,jdbcType=NUMERIC}, 
                #{item.entryTime,jdbcType=NUMERIC}, 
                #{item.entryStaffId,jdbcType=NUMERIC}, 
                #{item.scene,jdbcType=NUMERIC}, 
                #{item.approvalStatus,jdbcType=NUMERIC}, 
                #{item.createTime,jdbcType=NUMERIC}, 
                #{item.updateTime,jdbcType=NUMERIC},
                #{item.reserved,jdbcType=VARCHAR}
            )
        </foreach>
   </insert>