Google Cloud端点未在输入对象中设置值

我有一个这样的Cloud Endpoints方法：

@ApiMethod(httpMethod = HttpMethod.POST, path = "kokoers")
public Kokoer createKokoer(Kokoer kokoer, User user) throws UnauthorizedException, BadRequestException {
    logger.info(new ObjectMessage("kokoer: " + kokoer));

我正在像这样卷曲测试：

curl --request POST --header "content-Typ: application/json" -H "Authorization: Bearer <JWT token>" --data '{"kokoerName":"Danny Dwob", "emailAddress":"me@there"}' http://localhost:8080/_ah/api/kokodokoapi/v1/kokoers/

我的方法记录的消息是：

09:32:08.940 [qtp2009787198-57] INFO  uk.co.scapps.kokodoko.api.KokodokoAPI - kokoer: Kokoer [kokoer_id=null, kokoerName=null, no. of kokos=0, periods=[], emailAddress=null, kokoSharingPolicy=null]

我期望kokoerName和emailAddress将具有非null值。

我的openapi.json文件中的路径定义如下所示：

"paths": {
  "/kokodokoapi/v1/kokoers": {
     "post": {
        "operationId": "KokodokoapiCreateKokoer",
        "parameters": [
           {
              "in": "body",
              "name": "body",
              "required": false,
              "schema": {
                 "$ref": "#/definitions/Kokoer"
              }
           }
        ],
        "responses": {
           "200": {
              "description": "A successful response",
              "schema": {
                 "$ref": "#/definitions/Kokoer"
              }
           }
        },
        "security": [
           {
              "firebase": []
           }
        ],
        "x-security": [
           {
              "firebase": {
                 "audiences": [
                    "<project id>"
                 ]
              }
           }
        ]
     }
  },

该文件中的Kokoer定义如下所示：

"Kokoer": {
         "properties": {
            "emailAddress": {
               "type": "string"
            },
            "kokoSharingPolicy": {
               "$ref": "#/definitions/KokoSharingPolicy_E"
            },
            "kokoerName": {
               "type": "string"
            },
            "kokoer_id": {
               "type": "integer",
               "format": "int64"
            },
            "kokos": {
               "type": "array",
               "items": {
                  "$ref": "#/definitions/Koko"
               }
            },
            "periods": {
               "type": "array",
               "items": {
                  "$ref": "#/definitions/KokoPeriod"
               }
            }
         }
      }

Kokoer类定义的相关部分（据我所知；很高兴得到纠正）如下所示：

package uk.co.scapps.kokodoko.datamodel;

import java.util.HashSet;
import java.util.Set;

import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.OneToMany;
import javax.persistence.Table;

import com.fasterxml.jackson.annotation.JsonManagedReference;

@Entity(name="Kokoer")
@Table(name="kokoer")
public class Kokoer {
    @Id
    @GeneratedValue(strategy = GenerationType.SEQUENCE)
    @Column(updatable = false, nullable = false)
    private Long kokoer_id;
    private String kokoerName;

    @OneToMany(mappedBy = "kokoer")
    @JsonManagedReference
    private Set<Koko> kokos = new HashSet<Koko>();
。。。

    public String getKokoerName() {
        return this.kokoerName;
    }

    public void setKokoerName(String kokoerName) {
        this.kokoerName = kokoerName;
    }

    public Kokoer() {
        super();
        // TODO Auto-generated constructor stub
    }

}

假设输入的Kokoer对象具有所有空字段值，而不是我从curl传入的值，则该方法将完全按预期运行。

到目前为止，我在项目中还有一种API方法可用于创建类似类型的对象。它的结构极其相似，并且按预期方式工作，包括出现在输入对象中的来自卷曲的输入值。我无法发现两者之间的结构差异来解释不同的行为。

有什么想法吗？

谢谢。