1.

html +="<td class='text-right'><input type='text' name='mcode' value='"+$mcode+"' class='material-input'></td>";
        html +="<td class='text-right'><input type='text' name='materialName' value='"+$materialName+"' class='material-input'></td>";
        html +="<td class='text-right'><input type='text' name='properInventory' value='"+$properInventory+"' class='material-input'></td>";

			var formdata = $("#materialRegistrationSaveForm").serializeArray();
			
			
			console.log("formdata : "+ formdata2);
			
			var len = $(formdata).length;
			var jsonData='{"list":[';
			$(formdata ).each(function(index, obj){	
				var comma="";
				if(obj.name=="mcode"){
					jsonData +="{"
				}
				
				if(obj.name=="properInventory"){
					comma="";
					jsonData +='"'+obj.name+'" : "'+obj.value+'"'+comma;
					jsonData +="}";
					
					if (index != len - 1) { //마지막 인덱스 값이 아니면
						jsonData +=",";
			         }
					
				}else{
					comma=",";
					jsonData +='"'+obj.name+'" : "'+obj.value+'"'+comma;
					
				}
			});
			
			jsonData +="]}";
			console.log(jsonData);

	@PostMapping(value="write3.do")
	public String write3(@RequestBody MaterialVO materialVO, Model model) throws Exception{		
			log.info(materialVO.toString());			
		return "success";
	}

2. 배열 형식 html

list["+count+"].mcode

	html +="<td class='text-right'><input type='text' name='list["+count+"].mcode' value='"+$mcode+"' class='material-input'></td>";
		html +="<td class='text-right'><input type='text' name='list["+count+"].materialName' value='"+$materialName+"' class='material-input'></td>";
		html +="<td class='text-right'><input type='text' name='list["+count+"].properInventory' value='"+$properInventory+"' class='material-input'></td>";																			

var formdata2 = $("#materialRegistrationSaveForm").serialize();

 			$.ajax({
				 url: $("#materialRegistrationSaveForm").attr("action"),
				 type: 'POST',
				 data:formdata2,
				 dataType: 'text',
				 success: function(msg) {
				        alert(msg);
				 }		
			});  

private List<MaterialVO> list;

@Data
public class MaterialVO {

	private String mcode; //자재코드
	private String materialName; //자재명
	private Integer properInventory; //적정재고량

	private List<MaterialVO> list;

	
}

    @PostMapping(value="write.do")
    @ResponseBody
    public String write(MaterialVO materialVO, Model model) throws Exception{                                
            try {
                if(!managementService.insertMaterial(materialVO.getList())) return "blank";            
                return "success";
            }catch(Exception e) {
                if(e.getMessage().contains("Duplicate"))
                    return "duplicate";
                else
                   return e.getMessage();
            }        
    }

	/**
	 * 자재  등록
	 */
	public boolean insertMaterial(List<MaterialVO> list) throws Exception {	
		for(MaterialVO vo : list) {
			if(vo.getMcode()==null ||  StringUtils.isEmpty(vo.getMcode())) {
				return false;
			}
			
			if(vo.getMaterialName()==null ||  StringUtils.isEmpty(vo.getMaterialName())) {
				return false;
			}
			
			if(vo.getProperInventory()==null ||  StringUtils.isEmpty(vo.getProperInventory())) {
				return false;
			}
		}
		managementDao.insertMaterial(list);
		return true;
	}
	
	

	<insert id="insertMaterial" parameterType="java.util.List">
	INSERT INTO tbl_material(
			   mcode
			  ,material_name
			  ,proper_inventory
			) 
			VALUES
		<foreach item="item" index="index" collection="list" separator=" , ">
			 (
			 #{item.mcode}
			 ,#{item.materialName}
			 ,#{item.properInventory}
			)
		</foreach>
	</insert>