【Java+Jackson工具】converValue日期类型字段（properties）转换失败，字段properties转换失败问题

问题背景

下面这段代码

ObjectMapper objectMapper = new ObjectMapper();

List<UserInfoVO> userInfoList = objectMapper.convertValue(dataList, new TypeReference<List<UserInfoVO>>() {

});

有两个exception

一个是字段properties转换exception

java.lang.IllegalArgumentException: Unrecognized field "CAlipay" (class com.abc.abcsvc.vo.UserInfoVO), not marked as ignorable

一个是日期类型字段转换exception

java.lang.IllegalArgumentException: Cannot construct instance of java.time.LocalDateTime (no Creators, like default construct, exist): no String-argument constructor/factory method to deserialize from String value ('2025-07-04')
 at [Source: UNKNOWN; line: -1, column: -1] (through reference chain: java.util.ArrayList[0]-

这个代码的逻辑是获取JSON之后转换成对象

对应报错的JSON字符串如下（省略非必要信息）

{
    "batchNo": 20000000000000,
    "totalNum": 1,
    "dataList": [
        {
            "CAlipay": "12344",
            "issueDate": "2000-01-01"
        }
    ]
}

原因

使用的是springboot进行开发，内置的jackson依赖默认字段映射是大小写敏感的、且不支持java时间类（没了解过最新版是否支持）

解决办法

显式声明大小写不敏感

将java时间接口注册上objectMapper

ObjectMapper objectMapper = new ObjectMapper();

objectMapper.configure(MapperFeature.ACCEPT_CASE_INSENSITIVE_PROPERTIES, true) // 显式声明大小写不敏感

            .registerModule(new JavaTimeModule());// 将java时间接口注册上objectMapper

List<UserInfoVO> userInfoList = objectMapper.convertValue(dataList, new TypeReference<List<UserInfoVO>>() {

});