保存对象列表返回无法反序列化错误

Question

我使用spring boot和thymeleaf我试图保存一个对象列表。

public class GECPD {
    public Integer id;
    public String name;
    public List<GEPD> geL;
    public Integer giId;     
    public Integer sGEId;
}

  Set<GECPD> gECL = new HashSet<>();
  ...
  model.addAttribute("gECL", new ArrayList<>(gECL));

<input name="id[0]" type="hidden" value="136">
<select name="sGEId[0]" class="form-control">
 <option value="246">01</option>
    <option value="391">00</option>
</select>

  @PutMapping(value = "/{id}/ge")
  public ResponseEntity updateGE(@PathVariable("id") Integer id, @RequestBody List<GECPD> dto) {
        ....
        return new ResponseEntity(dto,HttpStatus.OK);
  }

var form = transForm.serialize('#gEForm');
var url = "/rest/spi/"  + $("#spi").val() + "/ge";
form = JSON.stringify(form);
jQuery.ajax({
    type: "put",
    url: url,
    contentType: "application/json",
    data: form,
    success: function (data, status, jqXHR) {
    },
    error: function (jqXHR, status) {

        checkError(jqXHR);
    }
});

{"id":["136"],"sGEId":["246"]}

我得到这个结果

ERREUR：{“时间戳”：“2018-06-29T15:36:58.427+0000”,“状态”：400,“错误”：“错误请求”,“消息”：“JSON解析错误：不能反序列化java.util.arrayList的START_OBJECT令牌外的实例；嵌套异常是com.fasterxml.jackson.databind.exc.mismatchedinputException：不能反序列化java.util.arrayList的START_OBJECT令牌外的实例\n在[源：（

你知道吗？

Answer 1

你的前端没问题...您需要修改服务器端

@PutMapping(value = "/{id}/ge")
  public ResponseEntity updateGE(@PathVariable("id") Integer id, @RequestBody GECPDList dto) {
        ....
        return new ResponseEntity(dto,HttpStatus.OK);
  }

在GECPDS中

public GECPDList class{
    private List<GECPD> gecpds;
}