Spring Data Couchbase/Spring Boot：無法獲取對象的嵌套列表

Question

我是couchbase的新手，我遇到了從couchbase獲取文檔的問題。對象（設備列表）的嵌套列表始終爲空。我使用了Spring Boot和Spring Data Couchbase。

模型（User.java）

@Document 
public class User implements Serializable { 
    @Id 
    private String id; 

    @Field 
    @NotNull 
    private String username; 

    @Field 
    @NotNull 
    private String password; 

    @Field 
    private List<Devices> deviceList; 

    /** getter and setter here **/ 
} 

模型（Devices.java）

@Document 
public class Devices implements Serializable { 
    @Field 
    @NotNull 
    private String deviceId; 

    @Field 
    @NotNull 
    private String status; 

    @Field 
    @NotNull 
    private String createdDate; 

    @Reference 
    private User user; 

    /** getter and setter here **/ 
} 

庫

@Repository 
@Transactional 
@N1qlPrimaryIndexed 
public interface UserRepository extends CouchbaseRepository<User, String>{ 

    User findOneByUsername(String username); 

    User findOneByDeviceId(String deviceId); 
} 

文獻

{ 
    "username": "username", 
    "password": "password", 
    "devicesList": [ 
    { 
     "deviceId": "abc123", 
     "status": "deactived", 
     "createdDate": "2017-07-28 15:59:13" 
    }, 
    { 
     "deviceId": "abc456", 
     "status": "actived", 
     "createdDate": "2017-07-28 15:59:13" 
    }, 
    { 
     "deviceId": "abc789", 
     "status": "deactived", 
     "createdDate": "2017-07-28 15:59:13" 
    } 
    ] 
} 

結果

{ 
    "responseCode": 200, 
    "data": { 
     "id": "user-login-03", 
     "username": "username", 
     "password": "password", 
     "deviceList": null 
    } 
} 

我希望你能幫我解決這個問題。預先感謝您

Answer 1

在您的班級中，屬性名稱爲deviceList但在json中它是devicesList。 由於屬性名稱不同，持久化的json無法轉換爲POJO。