layui表单提交时间参数到springboot后端对象无法识别的解决办法_layui表单提交日期类型数据后台实体接收不到

作者：菜鸟追梦旅行 | 2024-03-17 10:46:58

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layui表单提交日期类型数据后台实体接收不到

前端为layui实现的表单，有一个时间选项，提交到后台时，发现对象的时间字段一直为Null，现在给出解决办法。我的前端页面是这样的：

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>添加上岗证信息</title>
    <link rel="stylesheet" href="/layui/css/layui.css"  media="all">
</head>
<body  style="padding: 20px">
<form id="form"  class="layui-form layui-form-pane">
    <table class="editTable" style="width:100%;">
        <tr>
            <td class="label">*用户名：</td>
            <td>
                <input type="text" name="username" id="username" required lay-verify="required|usernameLen" placeholder="请输入用户名" autocomplete="off" class="layui-input">
            </td>
            <td class="label">已取得上岗证专业：</td>
            <td>
                <input type="text" name="major" id="major" required lay-verify="required|majorLen" placeholder="请输入已取得上岗证专业" autocomplete="off" class="layui-input">
            </td>
        </tr>
        <tr>
            <td class="label">已取得上岗证时间：</td>
            <td>
                <input type="text" name="rTime" id="rTime" autocomplete="off" class="layui-input">
            </td>
            <td class="label">已取得上岗证等级：</td>
            <td>
                <div class="sel">
                    <select id="level" name="level">
                        <option value="">请选择上岗证等级</option>
                        <option value="初级">初级</option>
                        <option value="中级">中级</option>
                        <option value="高级">高级</option>
                    </select>
                </div>
            </td>
        </tr>
        <tr>
            <td class="label">已取得上岗证编号：</td>
            <td>
                <input type="text" name="cardNO" id="cardNO" required lay-verify="required|cardLen" placeholder="请输入已取得上岗证编号" autocomplete="off" class="layui-input">
            </td>
            <td class="label">备注：</td>
            <td>
                <input type="text" name="intro" id="intro" placeholder="请输入备注" lay-verify="usernameLen" autocomplete="off" class="layui-input">
            </td>
        </tr>
    </table>
    <div class="layui-form-item" style="margin-top: 10px;margin-left: 10px;text-align: center">
        <button class="layui-btn" lay-submit="" lay-filter="addCard">提交</button>
        <button type="reset" id="res" class="layui-btn layui-btn-primary" style="margin-left: 20px;background-color: #FF5722">重置</button>
    </div>
</form>

<script type="text/javascript" src="/layui/layui.js"></script>

<script type="text/javascript">
    layui.use(['form','layer','layedit','laydate','upload','table'],function(){
        let form = layui.form,
        layer = parent.layer === undefined ? layui.layer : top.layer,
        laypage = layui.laypage,
        upload = layui.upload,
        layedit = layui.layedit,
        laydate = layui.laydate,
        $ = layui.jquery,
        table = layui.table;


        //自定义校验
        form.verify({
            usernameLen:function(value){
                if(value.length>20)
                    return "长度不能超过20";
            },
            majorLen:function(value){
                if(value.length>50)
                    return "长度不能超过50";
            },
            cardLen:function(value){
                if(value.length>13)
                    return "长度不能超过13";
            },
            stationLen:function (value) {
                if(value.length>10)
                    return "长度不能超过10";
            }
        });

        checkPermission();//该方法用来将不具备该权限的html元素隐藏
        //日期选择器
        laydate.render({
            elem: '#rTime'
            //,type: 'month'
        });




        //提交表单
        form.on('submit(addCard)', function(data){
          //  let formdata = $('#form').serializeObject();
          //  console.log('formdata:',formdata);
            let formdata=data.field;
            console.log('formdata:',formdata);
            $.ajax({
                url: '/card/addCard',
                data: JSON.stringify(formdata),
                type: "post",
                dataType: "json",
                contentType:"application/json; charset=utf-8",
                success: function (res) {
                    if(res.code==="200"){
                        layer.alert('添加上岗证信息成功', {
                            icon: 1,
                            skin: 'layer-ext-moon' //该皮肤由layer.seaning.com友情扩展。关于皮肤的扩展规则，去这里查阅
                        });
                        $("#res").click();
                    }
                }
            });
            return false;
        });



});
</script>
</body>
</html>

如上图所示，rTime字段是选择时间的，后端控制层的代码为：

@RestController
@RequestMapping("/card")
public class CardController {

   @Resource
   private CardService cardService;

   private static final Logger log = LoggerFactory.getLogger("adminLogger");


   @PostMapping("/addCard")
   public ResponseData addCard(@RequestBody CardInfo cardInfo){

      System.out.println(cardInfo.toString());
      ResponseData rd=new ResponseData();
      try {
         cardService.addCard(cardInfo);
         rd.setCode("200");
      }catch (Exception ex){
         rd.setCode("404");
         ex.printStackTrace();
      }
      return  rd;
   }

}

CardInfo结构为：注意rTime字段上面的注解，必须加这个才能识别到前端传过来的时间格式参数

import com.fasterxml.jackson.annotation.JsonFormat;
import com.smp.security.model.BaseEntity;
import lombok.Getter;
import lombok.Setter;
import lombok.ToString;

import java.util.Date;

@Getter
@Setter
@ToString
public class CardInfo extends BaseEntity<Long> {


    private static final long serialVersionUID = 6619894919257921520L;
    private String username;//用户名
    private String major;//上岗证的专业

    @JsonFormat(pattern="yyyy-MM-dd")//这里很关键，不加的话，date类型遍历得到的值为null
    private Date rTime;//获取上岗证的时间
    private String level;//上岗证等级
    private String cardNO;//上岗证编号
    private String intro;//备注

}

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