jackson反序列化，成员变量是list，无法解析泛型？

Question

问题描述

jackson反序列化，成员变量是List，无法解析泛型
使用ObjectMapper.readValue无法正确解析出对象中List变量的泛型；但在Spring Controller中是正确的，想要了解spring是如何做到的

相关代码

javabean如下：

@ApiModel
@Data
public class ApplyRefundItemIBay {


    @ApiModelProperty(value = "门诊流水号", required = true)
    @NotBlank(message = "门诊流水号不得为空")
    private String clinic_no;

    @ApiModelProperty(value = "患者ID", required = true)
    @NotBlank(message = "患者ID不得为空")
    private String patient_id;

    @ApiModelProperty(value = "患者姓名", required = false)
    private String patient_name;

    @ApiModelProperty(value = "申请退费人编号", required = true)
    @NotBlank(message = "申请退费人编号不得为空")
    private String apply_refund_per_id;

    @ApiModelProperty(value = "申请退费人姓名", required = true)
    @NotBlank(message = "申请退费人姓名不得为空")
    private String apply_refund_per_name;

    @ApiModelProperty(value = "申请退费科室编号", required = true)
    @NotBlank(message = "申请退费科室编号不得为空")
    private String apply_refund_dep_id;

    @ApiModelProperty(value = "申请退费科室名称", required = false)
    private String apply_refund_dep_name;

    @ApiModelProperty(value = "申请退费项目列表",required = true)
    @NotNull(message = "申请退费项目列表不允许为空")
    @Size(min = 1,max =1000 )
    @Valid
    public List<ApplyRefundItemListPan> applyRefundItemListPans ;

}

json参数如下：

{
  "applyRefundItemListPans": [
    {
      "advice_details_no": "",
      "advice_item_code": "",
      "advice_item_name": "",
      "advice_no": "",
      "audit_code": "",
      "bill_code": "",
      "drug_spec": "",
      "fee_item_no": "",
      "fee_no": "",
      "hosp_area_id": "",
      "hosp_id": "",
      "insurance_code": "",
      "insurance_name": "",
      "item_code": "",
      "item_name": "",
      "item_type": "",
      "price": 0,
      "quantity": 0,
      "repetition": 0,
      "return_amount": 0,
      "specs_code": "",
      "total_amount": 0,
      "unit": ""
    }
  ],
  "apply_refund_dep_id": "",
  "apply_refund_dep_name": "",
  "apply_refund_per_id": "",
  "apply_refund_per_name": "",
  "clinic_no": "",
  "patient_id": "",
  "patient_name": ""
}

其中applyRefundItemListPans变量为List类型，请问这种作为成员变量的泛型，无法使用JavaType或者TypeReference，如何解析？SpringMVC又是通过什么机制做到解析的？时间着急在SpringMVC源码中一时找不到答案

Answer 1

你这里没有泛型

Answer 2

代码方便列一下，我本地可以解析List里的内容

Answer 3

很遗憾，你一开始就把springmvc的实现方式淘汰了，他就是用的javaType，使用javaType或者是TypeReference，一般是类上有泛型，你这类上面没有泛型，直接readValue就能搞定