![](/img/trans.png)
[英]How to deserialize Json with a nested array of objects in a simple Spring Boot application
[英]How to deserialize an array object in spring boot
我的問題很簡單,我有一個 spring boot 控制器,它可以接收這樣的對象數組:
@RequestMapping(value = "/contracts/{id}/milestones", method = RequestMethod.PUT, headers = "Accept=application/json")
@ResponseBody
@Transactional
public ResponseEntity<?> updateContractMilestones(@PathVariable("id") String contractId,
@DTO(MilestoneUpdateStateDto.class) List<Milestone> milestones,UriComponentsBuilder uriComponentsBuilder, final HttpServletRequest request) {
}
但是當我發送以下 Json 對象時:
[{"id":18,"state":"FINALIZED"},{"id":19,"state":"FINALIZED"}]
我收到以下錯誤:
無法讀取 HTTP 消息:org.springframework.http.converter.HttpMessageNotReadableException:JSON 解析錯誤:無法從 START_ARRAY 令牌中反序列化
com.espiritware.opusclick.dto.MilestoneUpdateStateDto
實例; 嵌套異常是 com.fasterxml.jackson.databind.exc.MismatchedInputException:無法從 START_ARRAY 令牌中反序列化com.espiritware.opusclick.dto.MilestoneUpdateStateDto
實例
我的問題是我應該從后端做什么才能無錯誤地接收這個對象?
非常感謝!
將您的方法簽名更新為
@RequestMapping(value = "/contracts/{id}/milestones", method = RequestMethod.PUT, headers = "Accept=application/json")
@ResponseBody
@Transactional
public ResponseEntity<?> updateContractMilestones(
@PathVariable("id") String contractId,
List<MilestoneUpdateStateDto> milestones,
...
)
並嘗試使用此 JSON
{
[
{"id":18, "state":"FINALIZED"},
{"id":19, "state":"FINALIZED"}
]
}
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.