我尝试使用POST方法保存一个Entity数组,传递一个数组用于rest资源,但是我有一个错误:
org.springframework.http.converter.HttpMessageNotReadableException: Could not read document: Can not deserialize instance of br.com.servtech.almox.model.Item out of START_ARRAY token
at [Source: org.apache.catalina.connector.CoyoteInputStream@2af1e451; line: 1, column: 1]; nested exception is com.fasterxml.jackson.databind.JsonMappingException: Can not deserialize instance of br.com.servtech.almox.model.Item out of START_ARRAY token
at [Source: org.apache.catalina.connector.CoyoteInputStream@2af1e451; line: 1, column: 1]
at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.readJavaType(AbstractJackson2HttpMessageConverter.java:228) ~[spring-web-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.readInternal(AbstractJackson2HttpMessageConverter.java:205) ~[spring-web-4.3.3.RELEASE.jar:4.3.3.RELEASE]
当我向一个对象发送数据时,数据保存得非常好!
我的实体:
@Entity
public class Item implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
@Basic
private String name;
@Basic
private Integer quantity;
@Basic
private Double cash;
@ManyToOne
private Requirement requirement;
//getters and setters
}
我的存储库:
@RepositoryRestResource
@CrossOrigin
public interface ItemDAO extends CrudRepository<Item, Long> {
}
数据:
[{
"name": "A1",
"quantity": 3,
"cash": 5.80
}, {
"name": "B2",
"quantity": 3,
"cash": 5.80
}]
我尝试使用Content-Type应用程序/ json并使用text / uri-list。 怎么了?我做了一些设置吗?
答案 0 :(得分:2)
有问题的是,当您的请求正文实际上是多个s
时,它会尝试将您的请求正文读取为Item
。
我相信你有两个选择。在这种情况下我通常会做的是创建另一个资源,例如Items
,以包装多个ItemCollection
。然后,您可以使用标准REST功能来接收Items
,这实际上将处理多个ItemCollection
。
您的第二个选择是手动覆盖处理多个主题的方法:http://docs.spring.io/spring-data/rest/docs/current/reference/html/#customizing-sdr.overriding-sdr-response-handlers